MXPA01001448A - Organometallic monoacylarylphosphines - Google Patents

Abstract

R1 and R2 independently of one another are C1-C20alkyl, OR11, CF3 or halogen;R3, R4 and R5 independently of one another are hydrogen, C-C20alkyl, OR11 or halogen;R6, R7, R8, R9 and R10 independently of one another are hydrogen, C1-C20alkyl;C2-C20alkyl which is interrupted once or more than once by nonconsecutive O atoms and which is unsubstituted or substituted by OH and/or SH;or R6, R7, R8, R9 and R10 are OR11, SR11, N(R12)(R13), phenyl or halogen;R11 is C1-C20alkyl, C3-C8cycloalkyl, phenyl, benzyl or C2-C20alkyl which is interrupted once or more than once by O or S and which is unsubstituted or substituted by OH and/or SH;R12 and R13independently of one another are hydrogen, C1-C20alkyl, C3-C8cycloalkyl, phenyl, benzyl or C2-C20alkyl which is interrupted once or more than once by nonconsecutive O atoms and which is unsubstituted or substituted by OH and/or SH;or R12 and R13 together are C3-C5alkylene which can be interrupted by O, S or NR14;R14 is hydrogen, phenyl, C1-C12alkyl or C2-C12alkyl which is interrupted once or more than once by O or S and which is unsubstituted or substituted by OH and/or SH;and M is hydrogen, Li, Na or K;are valuable intermediates for the preparation of unsymmetrical bisacylphosphine oxides and monoacylphosphine oxides.

Description

ORGANOMETALLIC MONOACILARILPHOSPHINES FIELD OF THE INVENTION The present invention relates to organometallic monoacrylyl phosphines, with the preparation thereof, and with the use thereof as starting materials for the preparation of acylphosphines, acylphosphine oxides or acylphosphine sulfides.

BACKGROUND OF THE INVENTION Several metallized phosphines have become known as intermediates in the preparation of acylphosphine oxides. Thus, for example, in EP 40721, acylphosphines are obtained by the reaction of acyl halides with metallized diorganophosphines or silylated phosphines or diorganophosphines. By the oxidation of the acildiorganophosphines, the corresponding acylphosphine oxide photoinitiators can be prepared therefrom. Swiss Patent Application No. 2376/98 describes a process in a vessel for the preparation of bisacylphosphine oxides in which the dichloroorganophosphines are metallized, then reacted with acyl halides to give the corresponding acylphosphines and then, by oxidation or sulfuration, bisacylphosphine oxides or bisacylphosphine sulfides are obtained. The arylacylphosphines and the corresponding metallized compounds are known in the art. US 5399770 describes a bisacylphosphine oxide having two different acyl groups, and US 5218009 specifically describes a monoacylphosphine oxide having two different non-acyl substituents on the phosphorus atom. For the technology, the easily accessible initial materials for the preparation of acylphosphine oxides and acylphosphine sulfides are of great importance. Of particular interest are the starting materials that allow the preparation of bisacylphosphine oxides and "non-symmetrical" bisacylphosphine sulfides, ie, those with two different acyl groups, in a simple form. A process has been found for the preparation of metallized arylacylphosphines which are suitable as starting materials for the preparation of photoinitiators of acylphosphine oxide or acylphosphine sulfide. The phosphines, phosphine oxides and phosphine sulfides obtained are novel.

BRIEF DESCRIPTION OF THE INVENTION The invention provides compounds of formula I Ar cyclopentyl, cyclohexyl, naphthyl, biphenylyl, anthracyl, or a 5- or 6-membered heterocyclic ring containing 0, S, or N, where the cyclopentyl, cyclohexyl, naphthyl, biphenylyl, anthracyl, or 5- or 6-membered heterocyclic ring containing 0, S or N which are or are not substituted by halogen, C 1 -C 4 alkyl and / or C 1 -C alkoxy; Ri and R2 independently from each other are C?-C2o alkyl, ORn, CF3 or halogen; R3, R and R5 independently of one another are hydrogen, C 1 -C 20 alkyl, OR n or halogen; or in each case two of the radicals Ri, R2 / R3, R4 and / or R5 together form alkylene of C? -C2o, which may be interrupted by 0, S or NR14; Rs, R7, Rs, R_ and Rio independently of one another are hydrogen, C? -C20 alkyl; C2-C2Q alkyl which is interrupted once or more than once by non-consecutive 0 atoms and which are or are not substituted by OH and / or SH; or Rs, R7, Re, R_ and Rio ORu, phenyl or halogen; Rii is hydrogen, CI-C2Q alkyl, C2-C2O alkenyl, C3-Cs cycloalkyl, phenyl, benzyl or C2-C20 alkyl which is interrupted once or more than once by 0 or S and which are or not-substituted by OH and / or SH; Ri 4 is hydrogen, phenyl, C 1 -C 2 alkyl or C 2 -C 2 alkyl which is interrupted once or more than once by O or S and which are or are not substituted by OH and / or SH; YM is hydrogen, Li, Na or K. The C? ~ C 24 alkyl is straight or branched and is, for example, C 2 -C 24 alkyl, C 1 -C 20 alkyl, Ci-Cis alkyl, C alkyl? ~ C? 2, C? -C8 alkyl, C? -C6 alkyl or C? -C4 alkyl. Examples are methyl, ethyl, propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, pentyl, hexyl, heptyl, 2,4-trimethylpentyl, 2-ethylhexyl, octyl, nonyl, decyl, undecyl , dodecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl, osyl or tetracyosyl. For example, Ri, R2, R3, Ri ', R2' and R3 'are Ci-Cs alkyl, in particular C?-C6 alkyl, preferably C?-C4 alkyl, particularly preferably methyl.

C 1 -C 20 alkyl, C 1 -C 8 alkyl, C 1 -C alkyl , the Ci-Cg alkyl and the C?-C4 alkyl are likewise linear or branched and have, for example, the meanings given above in addition to the corresponding number of carbon atoms. Rd, Rβ, R7, R8, R9, RlO, Rll, Rl2, Rl3, Rl9 / ^ 20, zi R22 and R23 are, for example, C?-C8 alkyl, in particular C alquilo-C6 alkyl, preferably C? -C4 alkyl, for example methyl or butyl. The C2-C24 alkyl which is interrupted once or more than once by O, S or NRi4 is, for example, interrupted 1-9 times, for example 1-7 times or once, or twice, by O , S or NRi4. If the radicals are interrupted by two or more O, S or NR14, then the O atoms, the S atoms or the NRi4 groups are in each case separated from each other by at least one methylene group. The O atoms, S atoms or NR? 4 groups are thus not directly consecutive. The alkyl radical can be linear or branched. For example, structural units such as -CH-O-CH3, -CH2CH2-0-CH2CH3, - [CH2CH20] Z-CH3 arise, where z = 1 to 9, - (CH2CH20) 7CH2CH3, -CH2-CH (CH3) -0-CH2-CH2CH3, -CH2-CH (CH3) -0-CH2-CH3, -CH2SCH3 or -CH2-N (CH3) 2. The C2-C20 alkyl, the C2-C18 alkyl, the alkyl C2-C? 2 are interrupted by O and optionally by S are likewise linear or branched and can, for example, having the meanings given above in addition to the given number of carbon atoms. Here too, atoms of 0 are not consecutive. The haloalkyl of Ci-Cis is C alquilo-C? Alkyl as described above which is mono- or polysubstituted by halogen. That is, for example, perfluorinated Ci-Ciß alkyl. Examples are chloromethyl, trichloromethyl, trifluoromethyl or 2-bromopropyl, in particular trifluoromethyl or trichloromethyl. The C3-C24 cycloalkyl, for example C5-C2 cycloalkyl, C3-C12 cycloalkyl, C3-C8 cycloalkyl, embraces both the individual alkyl ring systems and also alkyl ring systems which bridge. In addition, the radicals may also contain linear or branched alkyl groups (as described above in addition to the corresponding number of carbon atoms). Examples are cyclopropyl, cyclopentyl, cyclohexyl, cyclooctyl, cyclododecyl, cyclo-silicon, adamantyl, in particular cyclopentyl and cyclohexyl, preferably cyclohexyl. Additional examples are The C3-C8 cycloalkyl, for example C3-C6 cycloalkyl, may have the meanings given above in addition to the corresponding number of carbon atoms. The C3-C ciclocycloalkyl substituted by C?-C2o alkyl, ORn, CF3 or halogen is preferably tri- or disubstituted at the 2,4,6- or 2,6- positions respectively of the cycloalkyl ring . Preference is given to 2,4,6-trimethylcyclohexyl and 2,6-dimethoxycyclohexyl. The C2-C24 alkenyl radicals are mono- or polyunsaturated, and are linear or branched and are, for example, C2-C8 alkenyl, C2-C8 alkenyl, C2-Cd alkenyl or C2-C4 alkenyl. Examples are vinyl, allyl, methallyl, 1,1-dimethylallyl, 1-butenyl, 2-butenyl, 1,3-pentadienyl, 1-hexenyl, octenyl, decenyl or dodecenyl, in particular allyl. The C2-C a alkenyl has the same meanings as above, in addition to the corresponding number of carbon atoms. If the C2-C24 alkenyl radicals are interrupted, for example by O, then the following structures are included, for example: - (CH2) and -0- (CH2)? - CH = CH2, - (CH2) and- 0- (CH2) XC (CH3) = CH2 or - (CH2) y-0-CH = CH2, where x and y independently are a number from 1 to 21. The C3-C24 cycloalkenyl, for example Cs-cycloalkenyl C 2, C 3 -C 2 cycloalkenyl, C3-C3 cycloalkenyl, covers both systems of individual alkyl rings and alkyl ring systems that bridge and may be mono or polyunsaturated, for example mono- or di-unsaturated. In addition, the radicals may also contain linear or branched alkyl groups (as described above in addition to the corresponding number of carbon atoms). Examples are cyclopropenyl, cyclopentenyl, cyclohexenyl, cyclooctenyl, cyclododecenyl, cycloosenyl, in particular cyclopentenyl and cyclohexenyl, preferably cyclohexenyl. The aryl of Cs-C? 4 is, for example, aryl of Ce-Cio. Examples are phenyl, naphthyl, biphenylyl, anthracyl or phenanthryl, preferably phenyl or naphthyl, in particular phenyl. The C -C24 arylalkyl is, for example, C7-C6 arylalkyl, C-Cn arylalkyl. The alkyl radical in this group can be linear or branched. Examples are benzyl, phenylethyl, α-methylbenzyl, phenyl-pentyl, phenylhexyl, α, α-dimethylbenzyl, naphthylmethyl, naphthylethyl, naphthyleth-1-yl or naphthyl-1-methyl-et-1-yl, in particular benzyl. The substituted C7-C24 arylalkyl is substituted one to four times, for example once, twice or three times, in particular once or twice, on the aryl ring.

The arylcycloalkyl of Ca-C24 is, for example, C9-C16 arylcycloalkyl, C9-C13 arylcycloalkyl and is cycloalkyl which is fused with one or more rings of ar Alkylthio of C 1 -C 2 refers to linear or branched radicals and is, for example, C 1 -C 8 alkylthio, C 1 -C 6 alkylthio or C 1 -C 4 alkylthio. Examples are methylthio, ethylthio, propylthio, isopropylthio, n-butylthio, sec-butylthio, isobutylthio, tert-butylthio, pentthylthio, hexylthio, heptylthio, 2,4-trimethylpentylthio, 2-ethylhexylthio, octylthio, nonylthio, decylthio or dodecylthio. , in particular methylthio, ethylthio, propylthio, isopropylthio, n-butylthio, sec-butylthio, isobutylthio, tert-butylthio, preferably methylthio. The C 1 -C 8 alkylthio is likewise linear or branched and has, for example, the meanings given above in addition to the corresponding number of carbon atoms. The C? -C24 alkylene is linear or branched and is, for example, C? -C2 alkylene, C? -C? 2 alkylene, C? -C8 alkylene / C2-C8 alkylene, C alkylene? -C, for example methylene, ethylene, propylene, isopropylene, n-butylene, sec-butylene, isobutylene, tert-butylene, pentylene, hexylene, heptylene, octylene, nonylene, decylene, dodecylene, tetradecylene, heptadecylene, octadecylene, icosylene or by alkylene axis of DC? , for example ethylene, decylene, -CH- -CH-CH, - -CH- (CH i 2 I 2'2 C11H23 CH, CH.

- The alkylene of C2-Ci8 is also linear or branched, for example C2-C8 alkylene or C2-C alkylene and has the meanings, given above in addition to the corresponding number of carbon atoms. If the alkylene of C2-C? 8 is interrupted once or more than once by O, S, or NRi4, then it is, for example, interrupted 1-9 times, for example 1-7 times or once or twice by O, S or NR? , and, for example, structural units such as -CH2-0-CH2-, -CH2CH2-0-CH2CH2-, - [CH2CH20] z- arise, where z = 1 to 9, - (CH2CH20) 7CH2CH2-, -CH2 -CH (CH3) -0-CH2-CH (CH3) -, -CH2-S-CH2-, -CH2CH2-S-CH2CH2-, -CH2CH2CH2-S-CH2CH2CH2-, - (CH2) 3-S- (CH2 ) 3-S- (CH2) 3-, -CH2- (NRi4) -CH2- or -CH2CH2- (NR14) -CH2CH2-. The alkylene radicals can be linear or branched and, if the alkylene radicals are interrupted by two or more groups 0, S or NRi4, then 0, S and NR? 4 are not consecutive, but in each case are separated from each other by at least one methylene group. The C2-C24 alkenylene is mono- or polyunsaturated and is linear or branched and is for example C2-C2 alkenylene or C2-C8 alkenylene. Examples are ethylene, propenylene, butenylene, pentenylene, hexenylene, octenylene, for example 1-propenylene, 1-butenylene, 3-butenylene, 2-butenylene, 1,3-pentadienylene, 5-hexenylene or 7-octenylene. The C2-C24 alkenylene is interrupted once or more than once by 0, S, or NRi4 mono or polyunsaturated and is linear or branched, and is, for example, interrupted 1-9 times, for example 1-7 times or once or twice by O, S or R14, where in the case of two or more 0, S or NRi4, these are in each case separated from each other by at least one methylene group. Here, the meanings for the alkenylene of C2-C24 are as defined above. The C 4 -C 8 cycloalkylene is linear or branched and can be a single ring or alkyl rings bridging. This is for example C4-C2-cycloalkylene or C4-C8 cycloalkylene, for example cyclopentylene, cyclohexylene, cyclooctylene, cyclododecylene, in particular cyclopentylene and cyclohexylene, preferably cyclohexylene. However, the C -C 8 cycloalkylene of likewise covers structural units such like - (CrH2r) (C_H2S) - in which they are independently of each other 0-12 and the sum of r + s is < 12, or (CsH2s) -, in which r and s independently each other 0-13 and the sum of r + s is < 13. The C 4 -C 8 cycloalkylene interrupted once or more than once by O, S or NRi 4 refers to the cycloalkylene units described above which may be interrupted in the ring unit or in the side chain unit, for example 1-9 times, 1-7 times or once or twice times O, S or NRi4. The C3-C24 cycloalkenylene is linear or branched and can be a single ring or rings bridging and is mono- or polyunsaturated. It is for example C3-C12 cycloalkenylene or C3-Ca cycloalkenylene, for example cyclopentenylene, cyclohexenylene, cyclooctenylene, cyclododecenylene, in particular cyclopentenylene and cyclohexenylene, preferably cyclohexenylene. The C3-C24 cycloalkenylene also, however, refers to Structural units such as (CrH2r) - (CSH2S) -.

- (C?) (CH,) -, in which r and s are independently each other 0-12 and the sum of r + s is < 12, or they are independently of each other 0 - 13 and the sum of r + s is < 13. The C5-C18 cycloalkenylene has the meanings given above for the C3-C2 cycloalkenylene in addition to the corresponding number of carbon atoms. The C-C2 cycloalkenylene interrupted once or more than once by O, S or NRi4 refers to the cycloalkenylene units described above which may be interrupted either in the ring unit or in the side chain unit for example 1-9 times, 1-7 times or once or twice by O, S or NR? . The examples are - (c, rH2r) The halogen is fluorine, chlorine, bromine or iodine, in particular fluorine, chlorine and bromine, preferably chlorine. Ri. Ri '/ R2. R2 '. R3 and R3 'as halogen are, in particular, chlorine. If in each case two of the radicals Ri, R2, R3, R4 or R5 or in each case two of the radicals Ri ', R2', R3 ', R4' or R5 'form an alkylene of C? -C? 2 / then, for example, his As a 5- or 6-membered heterocyclic ring containing i, S or N, Ar is, for example, furyl, thienyl, pyrrolyl, oxynyl, dioxinyl or pyridyl. Heterocyclic radicals may be mono- or polysubstituted, for example monosubstituted or disubstituted, by halogen, straight or branched C?-C 4 alkyl, such as methyl, ethyl, propyl, butyl, and / or C?-C alco alkoxy. Examples thereof are dimethylpyridyl, dimethylpyrrolyl or methylfuryl. Ar is, for example, 2-methylnaphth-2-yl, 2-methoxynaphth-2-yl, 1,3-dimethylnaphth-2-yl, 2,8-dimethylnaphth-1-yl, 1,3-dimethoxynaph-2-yl. ilo, 1,3-dichloronaphth-2-yl, 2,8-dimethoxynaphth-1-yl, 2,4,6-trimethylpyrid-3-yl, 2-dimethoxyphan-3-yl or 2,4,4,5-trimethylthien-3-yl. Preference is given to the compounds of formula I in which Ar is a radical is a group -NCO or -NCS. The cycloalkyl substituted by -N = C = A and C 1 -C 4 alkyl is for example isoforoisocyanate. In relation to the present application, the term "and / or" means not only one of the alternatives (substituents) defined, but likewise two or more alternatives (substituents) defined different from each other, that is, mixtures may be present of two different alternatives (substituents). The term "at least" is intended to define one or more than one, for example one or two or three, preferably one or two. Of particular interest are the compounds of formula I, in which R 1 and R independently from each other are C 1 -C alkyl, C 1 -C 4 alkoxy or Cl 3, in particular methyl or methoxy. Ri and R2 are preferably identical. R 1 and R 2 are preferably C 1 -C 4 alkyl or C 1 -C 4 alkoxy. R3. and in the compounds of the formula I are, in particular, independently of one another hydrogen, alkyl of C? ~ C, Cl or C? ~ C alkoxy, in particular hydrogen, methyl or methoxy. R 3 is preferably C 1 -C 4 alkyl, or C 1 -C 4 alkoxy, in particular methyl, methoxy or hydrogen, and R 4 and R 5 are hydrogen. R6, R, R8, R9 and Rio in the compounds of formula I are, in particular, independently of each other hydrogen, C? -C? 2 alkyl; ORn, phenyl or halogen, preferably C1-C4 alkyl, CL-C4 alkoxy, phenyl or halogen. R6, R7, R8, R9 and R10 in the compounds of the formula I are preferably hydrogen, C1-C4 alkyl, C1-C4 alkoxy, in particular hydrogen. R 11 in the compounds of the formula I is, for example, hydrogen, C 1 -C 2 alkyl, cyclopentyl, cyclohexyl, phenyl, benzyl or C 2 -C 2 alkyl which is interrupted once or more than once by O or S, preferably C 1 -C 4 alkyl, cyclopentyl, cyclohexyl, phenyl or benzyl. The compounds in which R 12 and R 3 are for example hydrogen, C 1 -C 4 alkyl, phenyl or benzyl or C 2 -C 6 alkyl? which is interrupted once or more than once by non-consecutive O atoms and which are or are not substituted by OH and / or SH; or R12 and R13 together are piperidino, morpholino, or piperazin are likewise of interest. R12 and Ri3 are preferably C? -C4 alkyl, or R? 2 and R13 are morpholino together. R 4 in the compounds of the formula I is, in particular, hydrogen, phenyl, C 1 -C 4 alkyl or C 2 -C 4 alkyl which is interrupted once or more than once by 0 or S and which are or are not substituted by OH and / or SH, preferably hydrogen and C? -C4 alkyl. M in the compounds of the formula I is preferably hydrogen or Li, in particular Li. Of particular interest are the compounds of the formula I in which Ri and R 2 independently of one another are C 1 -C 2 alkyl, OR 3, CF 3 or halogen; R, R4 and R5 independently of each other are hydrogen, C? -C12 alkyl, R? or halogen; R6, R7, R8, Rg and R? O independently of each other are hydrogen, C? -C? 2 alkyl, ORn, phenyl or halogen; Rix is hydrogen, C 1 -C 2 alkyl, cyclohexyl, cyclopentyl, phenyl or benzyl; R14 is hydrogen or C1-C12 alkyl; and M is hydrogen or Li. Examples of the compounds of the formula I are lithium 2,6-dimethylbenzoylphenylphosphine; Lithium 2,6-diethylbenzoylphenylphosphine; Lithium 2,4,6-trimethylbenzoylphenylphosphine; 2,3,4,5,6- pentamethylbenzoylphenylphosphine r of lithium; 2,3,5,6-tetramethylbenzoylphenolphosphine; 2, 6-triisopropyl-benzoylphenylphosphine lithium; Lithium 2,4,5,6-tetramethylbenzoylphenylphosphine; 2, 6,6-tri-tert-butylbenzoylphenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoylphenylphosphine lithium; 2, 6-diphenoxymethylbenzoylphenylphosphine lithium; 2, 3, 6-trimethyl-benzoylphenylphosphine lithium; 2,3,4,6-tetramethylbenzoylphenylphosphine lithium; Lithium 2-phenyl-6-ethylbenzoylphenylphosphine; 2, 4,6-trimethoxybenzoylphenylphosphine lithium; Lithium 2,4-dimethoxybenzoylphenylphosphine; Lithium 2,3,6-tri-ethoxybenzoylphenylphosphine; Lithium 2,6-diethoxybenzoylphenylphosphine; 2, 6-dimethoxy-3, 5-dimethylbenzoylphenylphosphine lithium; 2, 6-dimethoxy-4-methylbenzoylphenylphosphine lithium; 2, 6-dimethoxy-3-bromobenzoylphenylphosphine lithium; 2, 6-dimethoxy-3-chlorobenzoylphenylphosphine lithium; 2, 6-dimethoxy-3-chloro-5-bromobenzoylphenylphosphine lithium; 2, 6-dimethoxy-3, 5-dichlorobenzoylphenylphosphine lithium; 2, 3, 6-trimethoxy-5-bromo-benzoylphenylphosphine lithium; 2, 6-dichlorobenzoylphenylphosphine lithium; 2, 4,6-trichlorobenzo-ylphenylphosphine lithium; Lithium 2,3,6-trichlorobenzoylphenylphosphine; 2, 3, 5, 6-tetrachloro-benzoylphenylphosphine lithium; 2, 3,, 5, 6-pentachlorobenzoyl-phenylphosphine lithium; 2, 6-dichloro-3-methylbenzoylphenylphosphine of lithium; Lithium 2-chloro-6-methylbenzoylphenylphosphine; Lithium 2-methoxy-3,6-dichlorobenzoylphenylphosphine; Lithium 2-methoxy-6-chlorobenzoylphenylphosphine; 2, 6-bis (trifluoromethyl) -benzoylphenylphosphine lithium; Lithium 2-chloro-6-methylthiobenzoylphenylphosphine; Lithium 2,6-dibromo-benzoylphenylphosphine; 2, 6-trimethylbenzoyl-4-methylphenylphosphine from -lithium; 2, 4, 6-trimethylbenzoyl-2-methyl-phenylphosphine lithium; 2, 4,6-trimethylbenzoyl-2, 4-dimethyl-phenylphosphine lithium; 2, 4,6-trimethylbenzoyl-2,6-dimethylphenylphosphine lithium; 2, 4,6-trimethylbenzoyl-2, 5-dimethylphenylphosphine lithium; 2, 4,6-trimethylbenzoyl-2, 6-trimethylphenylphosphine lithium; 2, 4,6-trimethylbenzoyl-2,6-dimethyl-4-tert-butylphenylphosphine lithium; 2, 6-trimethylbenz-oil-2, 5-diisopropylphenylphosphine lithium; Lithium 2,4,6-tri-methylbenzoyl-4-phenylphenylphosphine; Lithium 2,4,6-trimethylbenzoyl-2-phenylphenylphosphine; Lithium 2,4,6-trimethylbenzoyl-4-methoxyphenylphosphine; Lithium 2,4,6-tri-methylbenzoyl-4-ethoxyphenylphosphine; Lithium 2,4,6-trimethylbenzoyl-4-propoxyphenylphosphine; Lithium 2,4,6-trimethylbenzoyl-4-butoxyphenylphosphine; Lithium 2,4,6-trimethylbenzoyl-4-pentoxyphenylphosphine; Lithium 2,4,6-trimethylbenzoyl-4-hexoxyphenylphosphine; Lithium 2,4,6-trimethylbenzoyl-4-isopropoxyphenylphosphine; Lithium 2,4,6-trimethylbenzoyl-4-isobutoxyphenylphosphine; Lithium 2,4,6-tri-methylbenzoyl-4-tert-butoxyphenylphosphine; 2,4,6- lithium trimethylbenzoyl-4- (2-ethylhexoxy) phenylphosphine; Lithium 2,4,6-trimethylbenzoyl-4- (1-methylpropoxy) phenylphosphine; 2, 6,6-trimethylbenzoyl-4-amyloxyphenylphosphine lithium; Lithium 2,4,6-trimethylbenzoyl-4-isopentoxyphenylphosphine; 2, 4, 6-trimethylbenzoyl-4-benzyloxyphenylphosphine lithium; Lithium 2,4,6-trimethylbenzoyl-4-phenyloxyphenylphosphine; Lithium 2,4,6-trimethylbenzoyl-4-methoxyethoxyphenylphosphine; Lithium 2,4,6-trimethylbenzoyl-4-ethoxyethoxyphenylphosphine; 2, 4,6-trimethylbenzoyl-2,4-dimethoxyphenylphosphine lithium; 2,4,6-trimethylbenzoyl-2,4-diethoxyphenylphosphine lithium; 2, 4,6-trimethylbenzoyl-2,4-dipropoxyphenylphosphine lithium; 2, 4,6-trimethylbenzoyl-2, 4-dibutoxyphenylphosphine lithium; 2, 4,6-trimethylbenzoyl-2,4-dipentoxyphenylphosphine lithium; 2, 4,6-trimethylbenzoyl-2,4-dihexoxyphenylphosphine lithium; 2, 4,6-trimethylbenzoyl-2,4-diisopropoxyphenylphosphine lithium; 2,, lithium 6-trimethylbenzoyl-2, -diisobutoxyphenylphosphine; 2, 6-trimethylbenzoyl-2, -di-tert-butoxyphenylphosphine lithium; 2,4,6-trimethylbenzoyl-2,4-di (2-ethylhexoxy) phenylphosphine lithium; 2,4,6-trimethylbenzoyl-2,4-di (1-methyl-propoxy) phenylphosphine lithium; 2, 4,6-trimethylbenzoyl-2,4-diamyloxyphenylphosphine lithium; 2, 4,6-trimethylbenzoyl-2,4-diisopentoxyphenylphosphine lithium; 2, 4,6-trimethylbenzoyl-2, -dibenzyloxyphenylphosphine lithium; 2, 4, 6-trimethylbenzoyl-2, -difenoxyphenylphosphine lithium; 2, lithium ß-trimethylbenzoyl-2, -dimethoxyethoxyphenylphosphine; v 2,4,6-tri- lithium methylbenzoyl-2, 4-diethoxyethoxyphenylphosphine; 2,4,6-trimethylbenzoyl-2, 6-trimethoxyphenylphosphine lithium; 2,4,6-trimethylbenzoyl-2,4,6-triethoxyphenylphosphine lithium; 2,4,6-trimethylbenzoyl-2,4,6-tripropoxyphenylphosphine lithium; Lithium 2,4,6-trimethylbenzoyl-2, 6-taxhoxyphenylphosphine; 2,4,6-Trimethylbenzoyl-2,4,6-tripentoxyphenylphosphine lithium; 2, 4,6-trimethylbenzoyl-2,4,6-trihexoxyphenylphosphine lithium; 2, 4,6-trimethylbenzoyl-2,4,6-triisopropoxyphenylphosphine lithium; 2, 4,6-trimethylbenzoyl-2,4,6-triisobutoxyphenylphosphine lithium; 2, 4,6-trimethylbenzoyl-2,4,6-tri-tert-butoxyphenyl-phosphine lithium; 2,4,6-trimethylbenzoyl-2,4,6-tri (2-ethylhex-oxy) phenylphosphine lithium; 2, 4,6-trimethylbenzoyl-2,4,6-tri- (1-methylpropoxy) phenylphosphine lithium; 2, 4,6-trimethylbenzoyl-2,4,6-triamloxyphenylphosphine lithium; 2, 4,6-trimethylbenzoyl-2,4,6-triisopentoxyphenylphosphine lithium; 2, 4,6-trimethylbenzoyl-2,4,6-tribenzyloxyphenylphosphine lithium; 2, 6,6-trimethylbenzoyl-2,4,6-trifenoxyphenylphosphine lithium; 2, 6-trimethylbenzoyl-2, 6-trimethoxyethoxyphenylphosphine lithium; 2, 4,6-trimethylbenzoyl-2,4,6-triethoxyethoxyphenyl-phosphine lithium; 2, 6-trimethylbenzoyl-2-methyl-4-methoxy-phenylphosphine lithium; 2, 4,6-trimethylbenzoyl-2-methyl-4-ethoxyphenylphosphine lithium; 2, 6,6-trimethylbenzoyl-2-methyl-4-propoxyphenylphosphine lithium; 2, 4,6-trimethylbenzoyl-2-methyl-4-butoxyphenylphosphine lithium; 2, 4,6-trimethylbenzoyl-2-methyl-4-pentoxyphenylphosphine lithium; 2, 4, 6-trimethylbenzoyl- Lithium 2-methyl-4-hexoxyphenylphosphine; 2,, 6-trimethylbenzoyl-2-methyl-4-isopropoxyphenylphosphine lithium; Lithium 2,4,6-trimethylbenzoyl-2-methyl-4-isobutoxyphenylphosphine; 2, 4,6-trimethylbenzoyl-2-methyl-4-tert-butoxyphenylphosphine lithium; 2, 4, 6-trimethylbenzoyl-2-methyl-4- (2-ethylhexoxy) phenylphosphine lithium; Lithium 2, 6-trimethylbenzoyl-2-methyl-4- (1-methylpropoxy) phenylphosphine; 2, 4,6-trimethylbenzoyl-2-methyl-4-amyloxyphenylphosphine lithium; 2, 4,6-trimethylbenzoyl-2-methyl-4-isopentoxyphenylphosphine lithium; 2, 4,6-trimethylbenzoyl-2-methyl-4-benzyloxyphenylphosphine lithium; 2, 4, 6-trimethylbenzoyl-2-methyl-4-phenoxyphenylphosphine lithium; 2, 6-trimethylbenzoyl-2-methyl-4-methoxyethoxyphenylphosphine lithium; 2, 4,6-trimethylbenzoyl-2-methyl-4-ethoxyethoxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-4-methylphenylphosphine lithium; 2, 6-dimethylbenzoyl-2-methylphenylphosphine lithium; 2, 6-dimethylbenzoyl-2, -dimethyl-phenylphosphine lithium; 2, 6-dimethylbenzoyl-2,6-dimethyl-phenylphosphine lithium; 2, 6-dimethylbenzoyl-2, 5-dimethylphenylphosphine lithium; 2, 6-dimethylbenzoyl-2,4,6-trimethylphenylphosphine lithium; 2, 6-dimethylbenzoyl-2,6-dimethyl-4-tert-butylphenylphosphine lithium; 2, 6-dimethylbenzoyl-2, 5-diisopropylphenylphosphine lithium; 2, 6-dimethylbenzoyl-4-phenylphenylphosphine lithium; 2, 6-dimethylbenzoyl-2-phenylphenylphosphine lithium; 2, 6-dimethylbenzoyl-4-methoxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-4-ethoxyphenylphosphine lithium; 2,6- lithium dimethylbenzoyl-4-propoxyphenylphosphine; 2, 6-dimethylbenzoyl-4-butoxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-4-pentoxyphenylphosphine lithium; 2, 6-di-methylbenzoyl-4-hexoxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-4-isopropoxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-4-isobutoxyphenylphosphine lithium; Lithium 2,6-dimethylbenzoyl-4-tert-butoxyphenylphosphine; Lithium 2,6-dimethyl-benzyl-4- (2-ethylhexoxy) phenylphosphine; Lithium 2,6-dimethylbenzoyl-4- (1-methylpropoxy) phenylphosphine; Lithium 2,6-dimethylbenzoyl-4-amyloxyphenylphosphine; Lithium 2,6-dimethylbenzoyl-4-isopentoxyphenylphosphine; Lithium 2,6-dimethylbenzoyl-4-benzyloxyphenylphosphine; Lithium 2,6-dimethyl-benzoyl-4-phenoxyphenylphosphine; 2, 6-dimethylbenzoyl-4-methoxyethoxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-4-ethoxy-ethoxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-2,4-dimethoxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-2, 4-diethoxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-2,4-diprop-oxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-2, 4-dibutoxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-2,4-dipentoxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-2,4-dihexoxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-2,4-diisopropoxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-2,4-diisobutoxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-2,4-di-tert-butoxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-2,4-di (2-ethylhexoxy) phenylphosphine lithium; 2,6-dimethylbenzoyl- 2,2,4-di (1-methyl-ropoxy) phenylphosphine lithium; 2, 6-dimethyl-benzoyl-2, -diamyloxyphenylphosphine, lithium; Lithium 2,6-dimethylbenzoyl-2, -diisophentoxyphenylphosphine; Lithium 2,6-dimethylbenzoyl-2, 4-dibenzyloxyphenylphosphine; Lithium 2,6-di-methylbenzoyl-2,4-diphenoxyphenylphosphine; Lithium 2,6-dimethylbenzoyl-2, 4-dimethoxyethoxyphenylphosphine; Lithium 2,6-dimethylbenzoyl-2, 4-diethoxyethoxyphenylphosphine; Lithium 2,6-dimethylbenzoyl-2, 6-trimethoxyphenylphosphine; Lithium 2,6-dimethylbenzoyl-2,4,6-triethoxyphenylphosphine; Lithium 2,6-di-methylbenzoyl-2,4,6-tripropoxyphenylphosphine; Lithium 2,6-dimethylbenzoyl-2,4,6-taxhoxyphenylphosphine; Lithium 2,6-di-methylbenzoyl-2,4,6-tripentoxyphenylphosphine; Lithium 2,6-di-methylbenzoyl-2,4,6-trihexoxyphenylphosphine; Lithium 2,6-dimethylbenzoyl-2,4,6-triisopropoxyphenylphosphine; Lithium 2,6-dimethylbenzoyl-2, 6-triisobutoxyphenylphosphine; Lithium 2,6-dimethylbenzoyl-2, 6-tri-tert-butoxyphenylphosphine; 2, 6-dimethylbenzoyl-2,4,6-tri (2-ethylhexoxy) phenylphosphine lithium; 2, 6-dimethylbenzoyl-2, 6,6-tri (1-methylpropoxy) -phenylphosphine, lithium; 2, 6-dimethylbenzoyl-2, 6,6-triamloxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-2, 6-triisopentoxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-2, 6,6-tribenzyloxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-2,4,6-trifenoxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-2, 6-trimethoxyethoxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-2, 6,6-triethoxyethoxyphenylphosphine lithium; 2,6-dimethylbenzoyl-2- lithium methyl-4-methoxyphenylphosphine; 2, 6-dimethylbenzoyl-2-methyl-4-ethoxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-2-methyl-4-propoxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-2-methyl-4-butoxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-2-methyl-4-pentoxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-2-methyl-4-hexoxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-2-methyl-4-isopropoxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-2-methyl-4-isobutoxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-2-methyl-4-tert-butoxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-2-methyl-4- (2-ethylhexoxy) phenylphosphine lithium; 2, 6-dimethylbenzoyl-2-methyl-4- (1-methylpropoxy) phenylphosphine lithium; 2, 6-dimethylbenzoyl-2-methyl-4-amyloxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-2-methyl-4-isopentoxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-2-methyl-4-benzyloxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-2-methyl-4-phenoxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-2-methyl-4-methoxyethoxyphenylphosphine lithium; 2, 6-dimethylbenzoyl-2-methyl-4-ethoxyethoxyphenylphosphine lithium; 2, 6-dimethoxybenzoyl-4-methylphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2-methylphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2,4-dimethyl-phenylphosphine lithium; 2, 6-dimethoxybenzoyl-2,6-dimethyl-phenylphosphine lithium; 2, 6-dimethoxybenzoyl-2, 5-dimethylphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2,4,6-trimethylphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2,6-dimethyl-4-tert-butylphenylphosphine lithium; 2,6-dimethoxybenzoyl-2, 5- lithium diisopropylphenylphosphine; 2, 6-dimethoxybenzoyl-4-phenylphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2-phenylphenylphosphine lithium; 2, 6-dimethoxybenzoyl-4-methoxy-phenylphosphine lithium; 2, 6-dimethoxybenzoyl-4-ethoxy-phenylphosphine lithium; 2, 6-dimethoxybenzoyl-4-propoxy-phenylphosphine lithium; 2, 6-dimethoxybenzoyl-4-butoxy-phenylphosphine lithium .; 2, 6-dimethoxybenzoyl-4-pentoxy-phenylphosphine lithium; 2, 6-dimethoxybenzoyl-4-hexoxy-phenylphosphine lithium; 2, 6-dimethoxybenzoyl-4-isopropoxy-phenylphosphine lithium; 2, 6-dimethoxybenzoyl-4-isobutoxy-phenylphosphine lithium; 2, 6-dimethoxybenzoyl-4-tert-butoxy-phenylphosphine lithium; Lithium 2,6-dimethoxybenzoyl-4- (2-ethylhexoxy) phenylphosphine; Lithium 2,6-dimethoxybenzoyl-4- (1-methylpropoxy) phenylphosphine; Lithium 2,6-dimethoxybenzoyl-4-amyloxyphenylphosphine; Lithium 2,6-dimethoxybenzoyl-4-isopentoxyphenylphosphine; 2, 6-dimethoxybenzoyl-4-benzyloxyphenylphosphine lithium; Lithium 2,6-dimethoxybenzoyl-4-phenoxyphenylphosphine; Lithium 2,6-dimethoxybenzoyl-4-methoxyethoxyphenylphosphine; 2, 6-dimethoxybenzoyl-4-ethoxyethoxyphenylphosphine lithium; 2,6-dimethoxybenzoyl-2,4-dimethoxyphenylphosphine lithium; Lithium 2,6-dimethoxybenzoyl-2, -dietoxyphenylphosphine; 2,6-dimethoxybenzoyl-2,4-dipropoxyphenylphosphine lithium; Lithium 2,6-di-methoxybenzoyl-2, -dibutoxyphenylphosphine; Lithium 2,6-dimethoxybenzoyl-2,4-dipentoxyphenyl phosphine; Lithium 2,6-dimethoxybenzoyl-2,4-dihexoxyphenylphosphine; 2, 6-dimethoxybenzoyl-2,4-diisopropoxyphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2,4-diisobutoxyphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2,4-di-tert-butoxyphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2, -di (2-ethylhexoxy) -phenylphosphine, lithium; 2, 6-dimethoxybenzoyl-2, -di (1-methylpropoxy) -phenylphosphine, lithium; 2, 6-dimethoxybenzoyl-2, 4-diamyloxyphenylphosphine lithium; • 2, 6-dimethoxybenzoyl-2,4-diisopentoxy-phenylphosphine lithium; 2, 6-dimethoxybenzoyl-2,4-di-benzyloxyphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2, -di-phenoxyphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2,4-di-methoxyethoxyphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2,4-diethoxyethoxyphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2,4,6-tri-ethoxyphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2,4,6-triethoxyphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2, 6,6-tri-propoxyphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2,4,6-tri-butoxyphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2,4,6-tri-pentoxyphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2,4,6-trihexoxyphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2, 6-triisopropoxyphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2,4,6-triisobutoxyphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2,4,6-tri-tert-butoxyphenylphosphine lithium; Lithium 2,6-di-methoxybenzoyl-2, 6-tri (2-ethylhexoxy) -phenylphosphine; 2, 6-dimethoxybenzoyl-2, 6, 6-tri (1-methylpropoxy) -phenylphosphine, lithium; 2, 6-dimethoxybenzoyl-2,4,6-triamloxyphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2,, 6-triisopentoxyphenylphosphine from lithium; 2, 6-dimethoxybenzoyl-2,4,6-tribenzyloxyphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2,4,6-trifenoxyphenylphos, lithium; 2, 6-dimethoxybenzoyl-2, 6-trimethoxyethoxyphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2,4,6-triethoxyethoxyphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2-methyl-4-methoxyphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2-methyl-4-ethoxyphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2-methyl-4-propoxyphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2-methyl-4-butoxyphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2-methyl-4-pentoxyphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2-methyl-4-hexoxyphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2-methyl-4-isopropoxyphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2-methyl-4-isobutoxyphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2-methyl-4-tert-butoxy-phenylphosphine lithium; 2, 6-dimethoxybenzoyl-2-methyl-4- (2-ethylhexoxy) -phenylphosphine lithium; 2, 6-dimethoxybenzoyl-2-methyl-4- (1-methylpropoxy) -phenylphosphine lithium; Lithium 2,6-dimethoxybenzoyl-2-methyl-4-amyloxyphenylphosphine; Lithium 2,6-dimethoxybenzoyl-2-methyl-4-isopentoxyphenylphosphine; 2, 6-dimethoxybenzoyl-2-methyl-4-benzyloxyphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2-methyl-4-phenoxyphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2-methyl-4-methoxyethoxyphenylphosphine lithium; 2, 6-dimethoxybenzoyl-2-methyl-4-ethoxyethoxyphenylphosphine lithium; 2, 6-bis (trifluoromethyl) benzoyl-4-methylphenylphosphine lithium; 2, 6-bis (trifluoromethyl) benzoyl-2-methylphenylphosphine lithium; 2,6-bis (trifluoromethyl) benzoyl-2,4-dimethyl- lithium phenylphosphine; 2, 6-bis (trifluoromethyl) enzoyl-2,6-dimethylphenylphosphine lithium; 2, 6-bis (trifluoromethyl) benzoyl-2, 5-dimethylphenylphosphine lithium; 2, 6-bis (trifluoromethyl) benzoyl-2,4,6-trimethylphenylphosphine lithium; 2, 6-bis- (trifluoromethyl) benzoyl-2,6-dimethyl-4-tert-butylphenylphosphine lithium; 2, 6-bis (trifluoromethyl) benzoyl-2, 5-diisopropyl-phenylphosphine from Lithium; 2, 6-bi s (trifluoromethyl) benzoyl-4-phenylphenylphosphine lithium; 2, 6-bis (trifluoromethyl) benzoyl-2-phenylphenylphosphine lithium; 2, 6-bis (trifluoromethyl) benzoyl-4-methoxyphenylphosphine lithium; 2, 6-bis (trifluoromethyl) benzoyl-4-ethoxyphenylphosphine lithium; Lithium 2,6-bis (trifluoromethyl) benzoyl-4-propoxyphenylphosphine; 2, 6-bis (trifluoromethyl) benzoyl-4-butoxyphenylphosphine lithium; 2, 6-bis (trifluoromethyl) benzoyl-4-pentoxyphenylphosphine lithium; 2, 6-bis (trifluoromethyl) benzoyl-4-hexoxyphenylphosphine lithium; 2, 6-bis (trifluoromethyl) benzoyl-4-isopropoxy-phenylphosphine lithium; 2, 6-bis (trifluoromethyl) benzoyl-4-isobutoxyphenylphosphine lithium; Lithium 2,6-bis (trifluoromethyl) benzoyl-4-tert-butoxyphenylphosphine; 2, 6-bis (trifluoromethyl) benzoyl-4- (2-ethylhexoxy) -phenylphosphine lithium; 2, 6-bis (trifluoromethyl) benzoyl-4- (1-methylpropoxy) -phenylphosphine lithium; 2, 6-bis (trifluoromethyl) benzoyl-4-a-yloxyphenylphosphine lithium; 2, 6-bis (trifluoromethyl) benzoyl-4-isopentoxyphenylphosphine lithium; 2,6-bis (tri-fluoromethyl) benzoyl-4-benzyloxyphenylphosphine lithium; 2,6- lithium bis (trifluoromethyl) benzoyl-4-phenoxyphenylphosphine; 2,6-bis (trifluoromethyl) benzoyl-4-methoxyethoxyphenylphosphine; 2, 6- bis (trifluoromethyl) benzoyl-4-ethoxyethoxyphenylphosphine lithium; 2, lithium bis-bis (trifluoromethyl) benzoyl-2,4-dimethoxyphenylphosphine; 2, 6-bis (trifluoromethyl) benzo-yl-2, -dietoxyphenylphosphine, lithium; 2,6-bis (trifluoromethyl) benzoyl-2,4-dipropoxyphenylphosphine lithium; 2,6-bis (trifluoromethyl) benzoyl-2, -dibutoxyphenylphosphine lithium; 2,6-bis (trifluoromethyl) benzoyl-2,4-dipentoxyphenylphosphine lithium; 2, 6-bis (trifluoromethyl) benzoyl-2,4-dihexoxy-phenylphosphine lithium; 2, 6-bis (trifluoromethyl) benzoyl-2,4-di-isopropoxyphenylphosphine lithium; 2, 6-bis (trifluoromethyl) benzoyl-2,4-diisobutoxyphenylphosphine lithium; 2,6-bis (trifluoromethyl) benzoyl-2,4-di-tert-butoxyphenylphosphine lithium; 2, 6-bis (trifluoromethyl) benzoyl-2,4-di (2-ethylhexoxy) -phenylphosphine lithium; 2, 6-bis (trifluoromethyl) benzoyl-2,4-di (1-methylpropoxy) -phenylphosphine lithium; 2, 6-bis (trifluoromethyl) benzoyl-2, 4-diamyloxyphenylphosphine lithium; 2,6-bis (trifluoromethyl) benzoyl-2,4-diisopentoxyphenylphosphine lithium; 2, 6-bis (trifluoromethyl) benzoyl-2, -dibenzyloxyphenylphosphine, lithium; 2, 6-bis (trifluoromethyl) benzoyl-2,4-diphenoxyphenylphosphine lithium; 2, 6-bis (trifluoromethyl) benzoyl-2,4-dimethoxyethoxyphenylphosphine lithium; 2,6-bis (trifluoromethyl) benzoyl-2,4-diethoxyethoxyphenylphosphine lithium; 2,6-bis (trifluoromethyl) enzoyl-2,4,6- lithium trimethoxyphenylphosphine; Lithium 2,6-bis (trifluoromethyl) enzoi-2-, 6-triethoxyphenylphosphine; 2,6-bis (trifluoromethyl) benzoyl-2-, 4,6-tripropoxyphenylphosphine lithium; 2, 6-bis (trifluoromethyl) -benzoyl-2,4,6-taxhoxyphenylphosphine lithium; 2,6-bis (trifluoromethyl) enzoyl-2,4,6-tripentoxyphenylphosphine lithium; 2, 6-bis (trifluoromethyl) benzoyl-2,4,6-trihexoxyphenyl-phosphine lithium; 2, 6-bis (trifluoromethyl) benzoyl-2, 6-triisopropoxyphenylphosphine lithium; 2,6-bis (trifluoromethyl) benzoyl-2,4,6-triisobutoxyphenylphosphine lithium; 2,6-bis (trifluoromethyl) enzoyl-2, 6,6-tri-tert-butoxyphenylphosphine lithium; 2,6-bis (trifluoromethyl) benzoyl-2,4,6-tri (2-ethyl-hexoxy) -phenylphosphine lithium; 2, 6-bis (trifluoromethyl) benzo-yl-2, 6,6-tri (1-methylpropoxy) -phenylphosphine, lithium; 2,6-bis (trifluoromethyl) benzoyl-2,4,6-triamloxyphenylphosphine lithium; 2, 6-bis (trifluoromethyl) benzoyl-1-2,6,6-triisopentoxy-phenylphosphine lithium; 2,6-bis (trifluoromethyl) benzoyl-2,4,6-tribenzyloxyphenylphosphine lithium; 2, 6-bis (trifluoromethyl) -benzoyl-2,4,6-trifenoxyphenylphosphine lithium; 2,6-bis- (trifluoromethyl) benzoyl-2,4,6-trimethoxyethoxyphenylphosphine lithium; 2, 6-bis (trifluoromethyl) benzoyl-2,4,6-triethoxyethoxy-phenylphosphine lithium; 2, 6-bis (trifluoromethyl) benzoyl-2-methyl-4-methoxyphenylphosphine lithium; 2, 6-bis (trifluoromethyl) benzoyl-2-methyl-4-ethoxyphenylphosphine lithium; 2,6-bis (trifluoromethyl) benzoyl-2-methyl-4-propoxyphenyl- lithium phosphine; 2, 6-bis (trifluoromethyl) benzoyl-2-methyl-4-butoxyphenylphosphine lithium; 2, 6-bis (trifluoromethyl) benzoyl-2-methyl-4-pentoxyphenylphosphine lithium; 2, 6-bis (trifluoromethyl) benzsil-2-methyl-4-hexoxyphenylphosphine lithium; Lithium 2,6-bis (trifluoromethyl) benzoyl-2-methyl-4-isopropoxyphenylphosphine; 2, 6-bis (trifluoromethyl) benzoyl-2-methyl-4-iso-butoxyphenylphosphine of. lithium; 2, 6-bis (trifluoromethyl) benzoyl-2-methyl-4-tert-butoxyphenylphosphine lithium; 2, 6-bis (trifluoromethyl) benzoyl-2-methyl-4- (2-ethylhexoxy) -phenylphosphine, lithium; 2, 6-bis (trifluoromethyl) benzoyl-2-methyl-4- (1-methylpropoxy) -phenylphosphine, lithium; 2, 6-bis (trifluoromethyl) benzoyl-2-methyl-4-amyloxyphenylphosphine lithium; 2,6-bis- (trifluoromethyl) benzoyl-2-methyl-4-isopentoxyphenylphosphine lithium; 2, 6-bis (trifluoromethyl) benzoyl-2-methyl-4-benzyloxyphenylphosphine lithium; 2, 6-bis (trifluoromethyl) -benzoyl-2-methyl-4-phenoxyphenylphosphine lithium; Lithium 2,6-bis (trifluoromethyl) benzoyl-2-methyl-4-methoxyethoxyphenylphosphine; 2, 6-bis (trifluoromethyl) benzoyl-2-methyl-4-ethoxy-ethoxyphenylphosphine lithium; 2, 6-dichlorobenzoyl-4-methylphenylphosphine lithium; 2, 6-dichlorobenzoyl-2-methylphenylphosphine lithium; 2, 6-dichlorobenzoyl-2,4-dimethylphenylphosphine lithium; 2, 6-dichlorobenzoyl-2,6-dimethylphenylphosphine lithium; 2, 6-dichlorobenzoyl-2, 5-dimethylphenylphosphine lithium; 2, 6-dichlorobenzoyl-2, 6-trimethylphenylphosphine lithium; 2,6-dichlorobenzoyl-2,6-dimethyl-4-tert-butylphenylphosphine from lithium; 2, 6-dichlorobenzoyl-2, 5-diisopropylphenylphosphine lithium; 2, 6-dichlorobenzoyl-4-phenylphenylphosphine lithium; Lithium 2,6-dichlorobenzoyl-2-phenylphenylphosphine; 2, 6-dichlorobenzoyl-4-methoxyphenylphosphine lithium; Lithium 2,6-dichlorobenzoyl-4-ethoxyphenylphosphine; Lithium 2,6-dichloro-benzoyl-4-propoxyphenylphosphine; 2, 6-dichlorobenzoyl-4-butoxyphenylphosphine lithium; 2, 6-dichlorobenzoyl-4-pentoxyphenylphosphine lithium; 2, 6-dichlorobenzoyl-4-hexoxy-phenylphosphine lithium; 2, 6-dichlorobenzoyl-4-isopropoxyphenylphosphine lithium; 2, 6-dichlorobenzoyl-4-iso-butoxyphenylphosphine lithium; 2, 6-dichlorobenzoyl-4-tert-butoxy-phenylphosphine lithium; 2, 6-dichlorobenzo-7-74- (2-ethylhexoxy) phenylphosphine lithium; 2, 6-dichlorobenzoyl-4- (1-methylpropoxy) phenylphosphine lithium; 2, 6-dichlorobenzoyl-4-amyloxyphenylphosphine lithium; 2, 6-dichlorobenzoyl-4-isopentoxyphenylphosphine lithium; 2, 6-dichlorobenzoyl-4-benzyloxyphenylphosphine lithium; 2, 6-dichlorobenzoyl-4-phenoxy-phenylphosphine lithium; 2, 6-dichlorobenzoyl-4-methoxyethoxyphenylphosphine lithium; 2,6-dichlorobenzoyl-4-ethoxyethoxy-phenylphosphine; Lithium 2, 6-dichlorobenzoyl-2, -dimethoxyphenylphosphine, lithium; 2, 6-dichlorobenzoyl-2,4-diethoxyphenylphosphine lithium; 2, 6-dichlorobenzoyl-2,4-dipropoxyphenylphosphine lithium; 2, 6-dichlorobenzoyl-2, 4-dibutoxyphenylphosphine lithium; 2, 6-dichlorobenzoyl-2,4-dipentoxyphenylphosphine lithium; 2,6-dichlorobenzoyl-2,4-dihexoxyphenylphosphine lithium; 2,6- lithium dichlorobenzoyl-2, 4-diisopropoxyphenylphosphine; Lithium 2,6-di-chlorobenzoyl-2-diisobutoxyphenylphosphine; 2,6-dichlorobenzoyl-2,4-di-tert-butoxyphenylphosphine lithium; 2, 6-dichlorobenzoyl-2,4-di (2-ethylhexoxy) phenylphosphine, lithium; 2, 6-dichlorobenzoyl-2,4-di (1-methylpropoxy) phenylphosphine lithium; 2, 6-dichlorobenzoyl-2,4-diamyloxyphenylphosphine lithium; 2, 6-dichlorobenzoyl-2, 4- ^ diisopentoxyphenylphosphine lithium; Lithium 2,6-dichlorobenzoyl-2,4-dibenzyloxyphenylphosphine; Lithium 2,6-dichlorobenzoyl-2, 4-diphenoxyphenylphosphine; 2,6-dichlorobenzoyl-2,4-dimethoxyethoxyphenylphosphine lithium; 2, 6-dichlorobenzoyl-2,4-diethoxyethoxyphenylphosphine lithium; 2, 6-dichlorobenzoyl-2,4,6-trimethoxyphenylphosphine lithium; Lithium 2,6-dichlorobenzoyl-2, 6-triethoxyphenylphosphine; 2,6-dichlorobenzoyl-2,4,6-tripropoxyphenylphosphine lithium; 2, 6-di-chlorobenzoyl-2,4,6-taxhoxyphenylphosphine lithium; Lithium 2,6-dichlorobenzoyl-2,4,6-tripentoxyphenylphosphine; Lithium 2,6-dichlorobenzoyl-2,4,6-trihexoxyphenylphosphine; Lithium 2,6-di-chlorobenzoyl-2, 6-triisopropoxyphenylphosphine; Lithium 2,6-dichlorobenzoyl-2, 6-triisobutoxyphenylphosphine; Lithium 2,6-dichlorobenzoyl-2, 6-tri-tert-butoxyphenylphosphine; 2, 6-dichlorobenzoyl-2,4,6-tri (2-ethylhexoxy) phenylphosphine lithium; 2, 6-dichlorobenzoyl-2, 6,6-tri (1-methylpropoxy) phenylphosphine lithium; 2, 6-dichlorobenzoyl-2,4,6-triamloxyphenylphosphine lithium; 2, 6-dichlorobenzoyl-2,4,6-triisopentoxyphenylphosphine lithium; 2, 6-dichlorobenzoyl-2,, 6- lithium tribenzyloxyphenylphosphine; 2, 6-dichlorobenzoyl-2, 6-trifenoxyphenylphosphine lithium; 2, 6-dichlorobenzoyl-2,4,6-trimethoxyethoxyphenylphosphine lithium; 2, 6-dichlorobenzoyl-2,4,6-triethoxyethoxyphenylphosphine lithium; 2, 6-dichlorobenzoyl-2-methyl-4-methoxyphenylphosphine lithium; 2, 6-dichlorobenzoyl-2-methyl-4-ethoxyphenylphosphine lithium; 2, 6-dichlorobenzoyl-2-methyl-4-propoxyphenylphosphine lithium; 2, 6-dichlorobenzoyl-2-methyl-4-butoxyphenylphosphine lithium; 2, 6-dichlorobenzoyl-2-methyl-4-pentoxyphenylphosphine lithium; 2, 6-dichlorobenzoyl-2-methyl-4-hexoxyphenylphosphine lithium; 2, 6-dichlorobenzoyl-2-methyl-4-isopropoxyphenylphosphine lithium; 2, 6-dichlorobenzoyl-2-methyl-4-isobutoxy phenylphosphine lithium; 2, 6-dichlorobenzoyl-2-methyl-4-tert-butoxyphenylphosphine lithium; Lithium 2,6-dichlorobepzoyl-2-methyl-4- (2-ethylhexoxy) phenylphosphine; 2, 6-dichlorobenzoyl-2-methyl-4- (1-methylpropoxy) phenylphosphine lithium; 2, 6-dichlorobenzoyl-2-methyl-4-amyloxyphenylphosphine lithium; 2, 6-dichlorobenzoyl-2-methyl-4-isopentoxyphenylphosphine lithium; 2, 6-dichlorobenzoyl-2-methyl-4-benzyloxyphenylphosphine lithium; 2, 6-dichlorobenzoyl-2-methyl-4-phenoxyphenylphosphine lithium; 2, 6-dichlorobenzoyl-2-methyl-4-methoxyethoxyphenylphosphine lithium; 2, 6-dichlorobenzoyl-2-methyl-4-ethoxyethoxyphenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-4-methylphenophosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-2-methylphenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-2,4-dimethylphen-ylphosphine lithium; 2, 3, 4, 6-tetramethylbenzoyl-2,6-dimethylphenylphosphine from lithium; 2, 3, 4,6-tetramethylbenzoyl-2, 5-dimethylphenylphosphine lithium; 2,3,4,6-tetramethylbenzoyl-2,4,6-trimethylphenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl -2,6-dimethyl-4-tert-butyl-phenylphosphine lithium; 2, 3, 6,6-tetramethylbenzoyl-2, 5-diisopropylphenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-4-phenylphenylphosphine lithium; 2, 3, 6,6-tetramethylbenzoyl-2-phenylphenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-4-methoxyphenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-4-ethoxyphenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-4-propoxyphenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-4-butoxyphenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-4-pentoxyphenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-4-hexoxyphenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-4-isopropoxyphenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-4-isobutoxyphenylphosphine lithium; 2, 3, 6,6-tetramethylbenzoyl-4-tert-butoxyphenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-4- (2-ethylhexoxy) phenylphosphine lithium; 2, 3, 4,6-tetramethyl-benzoyl-4- (1-methylpropoxy) phenylphosphine lithium; 2,3,4,6-tetramethylbenzoyl-4-amyloxyphenylphosphine lithium; 2,3,4,6-tetramethylbenzoyl-4-isopentoxyphenylphosphine lithium; 2,3,4,6-tetramethylbenzoyl-4-benzyloxyphenylphosphine lithium; 2,3,4,6-tetramethylbenzoyl-4-phenoxyphenylphosphine lithium; 2,3,4,6-tetramethylbenzoyl-4-methoxyethoxyphenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-4-ethoxyethoxyphenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-2,4-dimethoxyphenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-2,4-diethoxyphenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-2,4-dipropoxyphenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-2, 4-dibutoxyphenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-2, -di-pentoxyphenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-2,4-dihexoxyphenylphosphine lithium; 2,3,4,6-tetramethylbenzoyl-2,4-diisopropoxyphenylphosphine lithium; 2,3,4,6-tetramethylbenzoyl-2,4-diisobutoxyphenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-2, -di-tert-butoxyphenylphosphine lithium; 2,2,4,4,6-tetramethylbenzoyl-2,4-di (2-ethylhexoxy) phenylphosphine lithium; 2,3,4,6-tetramethylbenzoyl-2,4-di (1-methylpropoxy) phenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-2, -diamyloxyphenylphosphine lithium; 2,3,4,6-tetramethylbenzoyl-2, -diisopentoxyphenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-2, -dibenzyloxy-phenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-2,4-diphenoxyphenylphosphine lithium; 2, 3, 4, 6-tetramethylbenzoyl-2,4-dimethoxyethoxyphenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-2, -dietoxyethoxyphenylphosphine, lithium; 2,3,4,6-tetramethylbenzoyl-2, 6-trimethoxyphenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-2, 6,6-triethoxyphenylphosphine lithium; 2, 3, 6-tetramethylbenzoyl-2, 6-tripropoxyphenylphosphine lithium; 2, 3, 6-tetramethylbenzoyl-2,4,6-tributhoxy-phenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-2,4,6-tripentoxyphenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-2, 6-trihexoxyphenylphosphine lithium; 2, 3, 4, 6-tetra lithium methylbenzoyl-2,4,6-triisopropoxyphenylphosphine; 2,3,4,6-tetramethylbenzoyl-2,4,6-triisobutoxyphenylphosphine lithium; 2,3,4,6-tetramethylbenzoyl-2,4,6-tri-tert-butoxy-phenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-2, 6, 6-tri (2-ethylhexoxy) phenylphosphine, lithium; 2,3,4,6-tetramethylbenzoyl-2,4,6-tri (1-methylpropoxy) phenylphosphine lithium; 2,3,4,6-tetramethylbenzoyl-2,4,6-triamloxyphenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-2,4,6-triisopentoxyphenylphosphine lithium; 2, 3, 4,6-tetramethylbenzo-yl-2,4,6-tribenzyloxyphenylphosphine lithium; 2,3,4,6-tetramethylbenzoyl-2,4,6-trifenoxyphenylphosphine lithium; 2,3,4,6-tetramethylbenzoyl-2, 6-trimethoxyethoxyphenylphosphine lithium; 2,3,4,6-tetramethylbenzoyl-2,4,6-triethoxyethoxyphenylphosphine lithium; 2,3,4,6-tetramethylbenzoyl-2-methyl-4-methoxyphenylphosphine lithium; 2,3,4,6-tetramethylbenzoyl-2-methyl-4-ethoxyphenylphosphine lithium; 2,3,4,6-tetramethylbenzoyl-2-methyl-4-propoxyphenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-2-methyl-4-butoxyphenylphosphine lithium; 2,3,4,6-tetramethylbenzoyl-2-methyl-4-pentoxyphenylphosphine lithium; 2,3,4,6-tetramethylbenzoyl-2-methyl-4-hexoxyphenylphosphine lithium; 2,3,4,6-tetramethylbenzoyl-2-methyl-4-isopropoxyphenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-2-methyl-4-isobutoxyphenylphosphine lithium; 2,3,4,6-tetramethylbenzoyl-2-methyl-4-tert-butoxyphenylphosphine lithium; 2,3,4,6-tetramethylbenzoyl-2-methyl-4- (2-ethylhexoxy) phenylphosphine lithium; Lithium 2, 3, 4,6-tetramethylbenzoyl-2-methyl-4- (1-methylpropoxy) phenylphosphine; 2,3,4,6-tetramethylbenzoyl-2-methyl-4-amyloxyphenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-2-methyl-4-isopentoxyphenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-2-methyl-4-benzyloxyphenylphosphine lithium; 2, 3, 4,6-tetramethylbenzoyl-2-methyl-4-phenoxyphenylphosphine lithium; 2,3,4,6-tetramethylbenzoyl-2-methyl-4-methoxyethoxyphenylphosphine lithium; 2,3,4,6-tetramethylbenzoyl-2-methyl-4-ethoxyethoxyphenylphosphine lithium; 2, 4,6-trimethoxybenzoyl-4-methylphenylphosphine lithium; 2, 4,6-trimethoxybenzoyl-2-methylphenylphosphine lithium; 2,4,6-trimethoxybenzoyl-2,4-dimethylphenylphosphine lithium; Lithium 2,4,6-tri-methoxybenzoyl-2,6-dimethylphenylphosphine; 2,4,6-trimethoxybenzoyl-2, 5-dimethylphenylphosphine lithium; 2,4,6-trimethoxybenzoyl-2,4,6-trimethylphenylphosphine lithium; 2,4,6-trimethoxybenzoyl-2,6-dimethyl-4-tert-butylphenylphosphine lithium; 2, 4,6-trimethoxybenzoyl-2, 5-diisopropylphenylphosphine lithium; 2, 4,6-trimethoxybenzoyl-4-phenylphenylphosphine lithium; Lithium 2,4,6-trimethoxybenzoyl-2-phenylphenylphosphine; Lithium 2,4,6-trimethoxybenzoyl-4-methoxyphenylphosphine; Lithium 2,4,6-tri-methoxybenzoyl-4-ethoxyphenylphosphine; Lithium 2,4,6-trimethoxybenzoyl-4-propoxyphenylphosphine; Lithium 2,4,6-tri-methoxybenzoyl-4-butoxyphenylphosphine; Lithium 2,4,6-trimethoxybenzoyl-4-pentoxyphenylphosphine; 2,4,6- lithium trimethoxybenzoyl-4-hexoxyphenylphosphine; 2,4,6-trimethoxybenzoyl-4-isopropoxyphenylphosphine lithium; Lithium 2,4,6-trimethoxybenzoyl-4-isobutoxyphenylphosphine; Lithium 2,4,6-trimethoxybenzoyl-4-tert-butoxyphenylphosphine; Lithium 2,4,6-trimethoxybenzoyl-4- (2-ethylhexoxy) phenylphosphine; Lithium 2, 6-trimethoxybenzoyl-4- (1-methylpropoxy) phenylphosphine; 2, 4,6-trimethoxybenzoyl-4-amyloxyphenylphosphine lithium; 2, 4,6-trimethoxybenzoyl-4-isopentoxyphenylphosphine lithium; 2, 4,6-trimethoxybenzoyl-4-benzyloxyphenylphosphine lithium; 2, 4, 6-trimethoxybenzoyl-4-phenoxyphenylphosphine lithium; Lithium 2,4,6-trimethoxybenzoyl-4-methoxyethoxyphenylphosphine; Lithium 2,4,6-trimethoxybenzoyl-4-ethoxyethoxyphenylphosphine; 2,4,6-trimethoxybenzoyl-2,4-dimethoxyphenylphosphine lithium; Lithium 2,4,6-trimethoxybenzoyl-2, -dietoxyphenylphosphine; 2,4,6-trimethoxybenzoyl-2,4-dipropoxyphenylphosphine lithium; 2,4,6-trimethoxybenzoyl-2, 4-dibutoxyphenylphosphine lithium; 2,4,6-trimethoxybenzoyl-2, 4-dipentaxyphenylphosphine lithium; Lithium 2,4,6-trimethoxybenzoyl-2, -dihexoxyphenylphosphine; 2,4,6-trimethoxybenzoyl-2,4-diisopropoxyphenylphosphine lithium; 2, 4,6-trimethoxybenzoyl-2,4-diisobutoxyphenylphosphine lithium; 2, 4,6-trimethoxybenzoyl-2,4-di-tert-butoxyphenylphosphine lithium; 2, 6-trimethoxybenzoyl-2,4-di (2-ethyl-hexoxy) phenylphosphine lithium; 2,4,6-trimethoxybenzoyl-2,4-di (1-methylpropoxy) phenylphosphine lithium; 2, 6-trimethoxy-benzoyl-2, 4-diamyloxyphenylphosphine lithium; 2,4,6-tri- lithium methoxybenzoyl-2, 4-diisopentoxyphenylphosphine; 2,4,6-trimethoxybenzoyl-2,4-dibenzyloxyphenylphosphine lithium; 2,4,6-trimethoxybenzoyl-2,4-diphenoxyphenylphosphine lithium; 2,4,6-trimethoxybenzoyl-2,4-dimethoxyethoxyphenylphosphine lithium; 2,, 6-trimethoxybenzoyl-2, -dietoxyethoxyphenylphosphine, lithium; 2, 6-trimethoxybenzoyl-2,4,6-trimethoxyphenylphosphine lithium; 2, 4,6-trimethoxybenzoyl-2,4,6-triethoxyphenylphosphine lithium; 2,4,6-trimethoxybenzoyl-2,4,6-tripropoxyphenylphosphine lithium; 2, 4,6-trimethoxybenzoyl-2,4,6-taxhoxyphenylphosphine lithium; 2, 4,6-trimethoxybenzoyl-2,4,6-tripentoxyphenylphosphine lithium; 2, 4,6-trimethoxybenzoyl-2,4,6-trihexoxyphenylphosphine lithium; 2, 6-trimethoxybenzoyl-2,4,6-triisopropoxyphenylphosphine, lithium; 2, 6-trimethoxybenzoyl-2,4,6-triisobutoxyphenylphosphine lithium; 2, 6-trimethoxybenzoyl-2, 6,6-tri-tert-butoxyphenylphosphine lithium; 2, 6-trimethoxybenzoyl-2,4,6-tri (2-ethylhexoxy) phenylphosphine lithium; 2,4,6-Trimethoxybenzoyl-2, 6, 6-tri (1-methylpropoxy) phenylphosphine, lithium; 2, 4,6-trimethoxybenzoyl-2,4,6-triamloxyphenylphosphine lithium; 2, 6-trimethoxybenzoyl-2,4,6-triisopentoxyphenylphosphine lithium; 2, 6-trimethoxybenzoyl-2, 6,6-tribenzyl-oxyphenylphosphine lithium; 2, 4,6-trimethoxybenzoyl-2,4,6-trifenoxyphenylphosphine lithium; 2, 4,6-trimethoxybenzoyl-2,4,6-trimethoxyethoxyphenylphosphine lithium; 2, 4,6-trimethoxybenzoyl-2, 6,6-triethoxyethoxyphenylphosphine lithium; Lithium 2,4,6-trimethoxybenzoyl-2-methyl-4-methoxyphenylphosphine; 2, 6-trimethoxybenzoyl-2-methyl-4-ethoxyphenylphosphine lithium; 2, 4,6-trimethoxybenzoyl-2-methyl-4-propoxyphenylphosphine lithium; 2, 4,6-trimethoxybenzoyl-2-methyl-4-butoxyphenylphosphine lithium; 2, 4,6-trimethoxybenzoyl-2-methyl-4-pentoxyphenylphosphine lithium; 2, 4,6-trimethoxybenzoyl-2-methyl-4-hexoxyphenylphosphine lithium; 2, 4,6-trimethoxybenzoyl-2-methyl-4-isopropoxyphenylphosphine lithium; Lithium-2, 6-trimethoxybenzoyl-2-methyl-4-isobutoxyphenylphosphine, lithium 2,4,6-trimethoxybenzoyl-2-methyl-4-tert-butoxyphenylphosphine, 2,4,6-trimethoxy-benzoyl-2- lithium methyl-4- (2-ethylhexoxy) phenylphosphine; lithium 2,4,6-trimethoxybenzoyl-2-methyl-4- (1-methylpropoxy) phenylphosphine; 2,4,6-trimethoxybenzoyl-2-methyl-4- lithium amyloxyphenylphosphine, 2,4,6-trimethoxybenzoyl-2-methyl-4-isopentoxyphenylphosphine lithium, 2,4,6-trimethoxybenzoyl-2-methyl-4-benzyloxy-phenylphosphine lithium, 2,4,6-trimethoxybenzoyl- Lithium 2-methyl-4-phenoxyphenylphosphine, lithium 2,4,6-trimethoxybenzoyl-2-methyl-4-methoxyethoxyphenylphosphine, lithium 2,4,6-trimethoxybenzoyl-2-methyl-4-ethoxyethoxyphenylphosphine; lithium dimethyl-4-tert-butylbenzoyl-4-methylphenylphosphine; lithium-6,6-dimethyl-4-tert-butylbenzoyl-2-methylphenylphosphine; 2,6-dimethyl-4-tert-butylbenzoyl-2, -dimethylphenylphosphine, lithium 2, 6-dimethyl-4-tert-butylbenzoyl-2,6-dimethylphenylphosphine lithium; 2,6-dimethyl-4-tert-butylbenzoyl-2,5-dimethylphenylphosphine; of lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-2,4,6-trimethylphenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-2,6-dimethyl-4-ter- lithium butylphenylphosphine; 2, 6-dimethyl-4-tert-butylbenzoyl-2, 5-diisopropylphenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-4-phenylphenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-2-phenylphenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-4-methoxyphenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-4-ethoxyphenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-4-propoxyphenylphosphine lithium; 2,6-dimethyl-4-tert-butylbenzoyl-4-butoxyphenylphosphine; 2, 6-dimethyl-4-tert-butylbenzoyl-4-pentoxyphenylphosphine lithium; Lithium 2,6-dimethyl-4-tert-butylbenzoyl-4-hexoxyphenylphosphine; 2, 6-dimethyl-4-tert-butylbenzoyl-4-isopropoxyphenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-4-isobutoxyphenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-4-tert-butoxyphenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-4- (2-ethylhexoxy) phenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-4- (1-methylpropoxy) phenylphosphine lithium, 2,6-di-methyl-4-tert-butylbenzoyl-4-amyloxyphenylphosphine lithium; Lithium 2,6-dimethyl-4-tert-butylbenzoyl-4-isopentoxyphenylphosphine; 2, 6-dimethyl-4-tert-butylbenzoyl-4-benzyloxyphenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-4-phenoxyphenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-4-methoxyethoxyphenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-4-ethoxyethoxyphenylphosphine lithium; Lithium 2,6-dimethyl-4-tert-butylbenzoyl-2,4-dimethoxyphenylphosphine; Lithium 2,6-dimethyl-4-tert-butylbenzoyl-2, 4-diethoxyphenylphosphine; 2, 6-dimethyl-4-tert-butylbenzoyl-2, -dipropoxyphenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-2, 4-dibutoxyphenylphosphine lithium; 2, 6-dimethyl-4-tert-butyl-benzoyl-2,4-dipentoxyphenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-2,4-dihexoxyphenylphosphine lithium; Lithium 2,6-dimethyl-4-tert-butylbenzoyl-2-diisopropoxyphenylphosphine; - lithium 2, 6-dimethyl-4-tert-butylbenzoyl-2,4-diisobutoxyphenylphosphine; 2, 6-dimethyl-4-tert-butylbenzoyl-2,4-di-tert-butoxyphenylphosphine lithium; 2,6-di-methyl-4-tert-butylbenzoyl-2,4-di (2-ethylhexoxy) phenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-2,4-di (1-ethylpropoxy) phenylphosphine lithium; 2, 6-dimethyl-4-tert-butyl-benzoyl-2,4-diamyloxyphenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-2,4-diisopentoxyphenylphosphine lithium; Lithium 2,6-dimethyl-4-tert-butylbenzoyl-2-dibenzyloxyphenylphosphine; 2, 6-dimethyl-4-tert-butylbenzoyl-2,4-diphenoxyphenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-2,4-dimethoxyethoxyphenylphosphine lithium; Lithium 2,6-dimethyl-4-tert-butylbenzoyl-2, 4-diethoxyethoxyphenylphosphine; ~ 2, 6-dimethyl-4-tert-butylbenzoyl-2,4,6-trimethoxyphenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-2,4,6-triethoxyphenylphosphine lithium; 2,6-dimethyl-4-tert-butylbenzoyl-2,4,6-tripropoxyphenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-2, 6-taxhoxyphenylphosphine lithium; 2, 6-dimethyl-4-ter lithium butylbenzoyl-2,4,6-tripentoxyphenylphosphine; Lithium 2,6-dimethyl-4-tert-butylbenzoyl-2,4,6-trihexoxyphenylphosphine; 2, 6-dimethyl-4-tert-butylbenzoyl-2,4,6-triisopropoxyphenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-2,4,6-triisobutoxyphenylphosphine lithium; Lithium 2,6-dimethyl-4-tert-butylbenzoyl-2, 6-tri-tert-butoxyphenylphosphine; 2, 6-dimethyl-4-tert-butylbenzoyl-2, 6, 6-tri (2-ethylhexoxy) phenylphosphine, lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-2,4,6-tri (1-methylpropoxy) phenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-2,4,6-triamloxyphenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-2,4,6-triisopentoxyphenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-2, 6,6-tribenzyloxyphenylphosphine lithium; Lithium 2,6-dimethyl-4-tert-butylbenzoyl-2, 6-triphenoxyphenylphosphine; 2, 6-dimethyl-4-tert-butylbenzoyl-2,4,6-trimethoxyethoxy-phenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-2,4,6-triethoxyethoxyphenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-2-methyl-4-methoxyphenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-2-methyl-4-ethoxyphenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-2-methyl-4-propoxyphenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-2-methyl-4-butoxyphenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-2-methyl-4-pentoxyphenylphosphine lithium; Lithium 2,6-dimethyl-4-tert-butylbenzoyl-2-methyl-4-hexoxyphenylphosphine; 2, 6-dimethyl-4-tert-butylbenzoyl-2-methyl-4-isopropoxy- lithium phenylphosphine; 2, 6-dimethyl-4-tert-butylbenzoyl-2-methyl-4-isobutoxyphenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-2-methyl-4-tert-butoxyphenylphosphine lithium; Lithium 2,6-dimethyl-4-tert-butylbenzoyl-1-2-methyl-4- (2-ethylhexoxy) phenylphosphine; 2, 6-dimethyl-4-tert-butylbenzoyl-2-methyl-4- (1-methylpropoxy) phenylphosphine lithium; 2, 6-dimethyl-4-tert-buty-benzoyl-2-methyl-1-amyloxyphenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-2-methyl-4-isopentoxyphenylphosphine lithium; 2, 6-dimethyl-4-tert-butyl-benzoyl-2-methyl-4-benzyloxyphenylphosphine lithium; Lithium 2,6-di ethyl-4-tert-butylbenzoyl-1-methyl-4-phenoxyphenylphosphine; 2, 6-dimethyl-4-tert-butylbenzoyl-2-methyl-4-methoxyethoxyphenylphosphine lithium; 2, 6-dimethyl-4-tert-butylbenzoyl-2-methyl-4-ethoxyethoxyphenylphosphine lithium; Lithium 2-chloro-6-methylbenzoyl-4-methylphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2-methylphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2, 4-dimethylphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2,6-dimethylphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2, 5-dimethylphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2,4,6-trimethylphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2,6-dimethyl-4-tert-butylphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2, 5-diisopropylphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-4-phenylphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2-phenylphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-4-p-ethoxyphenylphosphine; 2-chloro-6- Lithium methylbenzoyl-4-ethoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-4-propoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-4-butoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-4-pentoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-4-hexoxyphenylphosphine; Lithium 2-chloro-6-methyl-benzoyl-4-isopropoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-4-isobutoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-4-tert-butoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-4- (2-ethylhexoxy) phenylphosphine; Lithium 2-chloro-6-methylbenzoyl-4- (1-methylpropoxy) phenylphosphine; Lithium 2-chloro-6-methylbenzoyl-4-amyloxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-4-isopentoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-4-benzyloxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-4-phenoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-4-methoxyethoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-4-ethoxyethoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2, 4-dimethoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2, 4-diethoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2, 4-dipropoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2, 4-dibutoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2, 4-dipentoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2, -dihexoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2, -diisopropoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2, 4-diisobutoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2, 4-di-tert-butoxyphenylphosphine; 2- lithium chloro-6-methylbenzoyl-2,4-ai (2-ethylhexoxy) phenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2, -di (1-methylpropoxy) phenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2, 4-diamyloxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2, 4-diisopentoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2, 4-dibenzyloxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2, 4-diphenoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2, -dimethoxyethoxyphenylphosphine; Lithium 2-chloro-6-methylbenz-oil-2, 4-diethoxyethoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2,4,6-trimethoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2,4,6-triethoxyphenylphosphine; 2-Chloro-6-methyl-benzoyl-2,4,6-tripropoxyphenylphosphine from lithium; Lithium 2-chloro-6-methylbenzoyl-2, 4,6-taxhoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2, 6-tripentoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2, 6-trihexoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2, 6-triisopropoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2,4,6-triisobutoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2, 6-tri-tert-butoxyphenyl phosphine; Lithium 2-chloro-6-methylbenzoyl-2,4,6-tri (2-ethylhexoxy) phenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2,4,6-tri (1-methylpropoxy) phenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2, 4,6-triamloxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2, 6-triisopentoxyphenylphosphine; 2-Chloro-6-methylbenzoyl-2,4,6-tribenzyloxyphenylphosphine lithium; Lithium 2-chloro-6-methylbenzoyl-2, 6-triphenoxyphenylphosphine; 2-Chloro-6-methylbenzoyl-2,4,6-trimethoxyethoxyphenylphosphine lithium; Lithium 2-chloro-6-methylbenzoyl-2, 6-triethoxyethoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2-methyl-4-methoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2-methyl-4-ethoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2-methyl-4-propoxyphenylphosphine; 2-Chloro-6-methyl-benzoyl-2-methyl-4-butoxyphenylphosphine, lithium; Lithium 2-chloro-6-methylbenzoyl-2-methyl-4-pentoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2-methyl-4-hexoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2-methyl-4-isopropoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2-methyl-4-isobutoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2-methyl-1-butoxy-phenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2-methyl-4- (2-ethylhexoxy) phenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2-methyl-4- (1-methylpropoxy) phenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2-methyl-4-amyloxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2-methyl-4-isopentoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2-methyl-4-benzyloxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2-methyl-4-phenoxyphenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2-methyl-4-methoxyethoxy-phenylphosphine; Lithium 2-chloro-6-methylbenzoyl-2-methyl-4-ethoxyethoxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-4-methylphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-2-methylphenylphosphine; 2-chloro-6-methoxybenzoyl-2,4-dimethylphenylphosphine lithium; 2-chloro-6-methoxybenzoyl-2, 6- lithium dimethylphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-2, 5-dimethylphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-2,4,6-trimethylphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-2,6-dimethyl-4-tert-butylphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-2, 5-diisopropylphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-4-phenylphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-2-phenylphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-4-methoxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-4-ethoxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-4-propoxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-4-butoxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-4-pentoxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-4-hexoxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-4-isopropoxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-4-isobutoxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-4-tert-butoxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-4- (2-ethylhexoxy) phenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-4- (1-methylpropoxy) phenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-4-amyloxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-4-isopentoxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-4-benzyloxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-4-phenoxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-4-methoxyethoxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-4-ethoxyethoxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-2, 4-dimethoxyphenylphosphine; 2-chloro-6- Lithium methoxybenzoyl-2, 4-diethoxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-2, -dipropoxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-2, -dibutoxyphenylphosphine; 2-Chloro-6-methoxybenzoyl-2,4-dipentoxyphenylphosphine lithium; Lithium 2-chloro-6-methoxybenzoyl-2,4-dihexoxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-2, -diisopropoxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-2,4-diisobutoxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-2, -di-tert-butoxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-2,4-di (2-ethylhexoxy) phenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-2, -di (1-methylpropoxy) -phenylphosphine; 2-chloro-6-methoxybenzoyl-2, 4-diamyloxyphenylphosphine lithium; 2-chloro-6-methoxybenzoyl-2,4-diisopentoxyphenylphosphine lithium; 2-chloro-6-methoxybenzoyl-2,4-dibenzyloxyphenylphosphine lithium; Lithium 2-chloro-6-methoxybenzoyl-2, 4-diphenoxyphenylphosphine; 2-Chloro-6-methoxybenzoyl-2,4-dimethoxyethoxyphenylphosphine lithium; Lithium 2-chloro-6-methoxybenzoyl-2, 4-diethoxyethoxyphenylphosphine; 2-Chloro-6-methoxybenzoyl-2,4,6-trimethoxyphenylphosphine lithium; Lithium 2-chloro-6-methoxybenzoyl-2, 6-triethoxyphenylphosphine; 2-Chloro-6-methoxybenzoyl-2,4,6-tripropoxyphenylphosphine lithium; 2-Chloro-6-methoxybenzoyl-2,4,6-taxhoxyphenylphosphine lithium; 2-Chloro-6-methoxybenzoyl-2,4,6-tripentoxyphenylphosphine lithium; Lithium 2-chloro-6-methoxybenzoyl-2,4,6-trihexoxyphenylphosphine; 2-Chloro-6-methoxybenzoyl-2,4,6-triisopropoxyphenylphosphine lithium; 2- lithium chloro-6-methoxybenzoyl-2, 6-triisobutoxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-2,4,6-tri-tert-butoxy-phenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-2, 6-tri (2-ethylhexoxy) phenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-2, 6-tri (1-methylpropoxy) phenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-2,4,6-trilyloxyphenylphosphine; 2-Chloro-6-methoxybenzoyl-2,4,6-triisopentoxyphenylphosphine lithium; Lithium 2-chloro-6-methoxybenzoyl-2,4,6-tribenzyloxyphenylphosphine; 2-Chloro-β-methoxybenzoyl-2,4,6-trifenoxyphenylphosphine lithium; 2-Chloro-6-methoxybenzoyl-2,4,6-trimethoxyethoxyphenylphosphine lithium; 2-Chloro-6-methoxybenzoyl-2,4,6-triethoxyethoxyphenylphosphine lithium; Lithium 2-chloro-6-methoxy-benzoyl-2-methyl-4-methoxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-2-methyl-4-ethoxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-2-methyl-4-propoxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-2-methyl-4-butoxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-2-methyl-4-pentoxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-2-methy1-4-hexoxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-2-methyl-4-isopropoxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-2-methyl-4-isobutoxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-2-methyl-4-tert-butoxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-2-methyl-4- (2-ethylhexoxy) phenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-2-methyl-4- (1-methylpropoxy) -phenylphosphine; 2-chloro-6-methoxybenzoyl-2-methyl-4- lithium amyloxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-2-methyl-4-isopentoxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-2-methyl-4-benzyloxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-2-methyl-4-phenoxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-2-methyl-4-methoxyethoxyphenylphosphine; Lithium 2-chloro-6-methoxybenzoyl-2-methyl-4-ethoxyethoxyphenylphosphine, lithium 1,3-dimethylnaphthoylphenylphosphine, lithium 2, 8-dimethylnaphthoylphenylphosphine, lithium 1,3-dimethoxynaphtoylphenylphosphine, 1,3-dichloronaphthoyl-phenylphosphine Lithium, 2, 8-dimethoxynaphtoylphenylphosphine lithium, 2,4,6-trimethylpyridoylphenylphosphine lithium, 2,4-dimethoxypuranoylphenylphosphine lithium, 1, 3-dimethylnaphthoylphenylphosphine lithium, 2,4,5-trimethylthienoylphenylphosphine. The compounds of the formula I are obtained selectively, for example, by the reaction of (IV) halides with dimethalylated arylphosphines (V): (IV) (V) (I ') Ar, Re, R7, R8, 9 and Rio have the meanings described above. X is Cl or Br and Mi is Na, Li or K.

The initial materials are advantageously reacted in the 1: 1 molar ratio. A slight excess of one or other of the components, for example of over 20%, however, is not critical. In this case, the desired product is also formed, since the proportion of undesirable by-product can be influenced. The reaction is carried out advantageously in a solvent. In particular, as solvents, it is possible to use ethers which are liquids at atmospheric pressure and ambient temperature. Examples are dimethyl ether, diethyl ether, methyl propyl ether, 1,2-dimethoxyethane, bis (2-methoxyethyl) ether, dioxane or tetrahydrofuran. Preference is given to the use of tetrahydrofuran. The reaction temperatures are advantageously from -60 ° C to + 120 ° C, for example from -40 ° C to 100 ° C, for example from -20 ° C to + 80 ° C. It is advisable to stir the reaction mixture. It is advantageous to initially introduce the compound of formula V and add dropwise the compound of formula IV at the temperatures given above. Here, the compound of formula IV can be added without a diluent or also diluted with the reaction solvent. If desired, the course of the reaction can be verified using the methods customary in the art, for example NMR, for example 31P-NMR, chromatography (thin layer, CLAP, CG) etc. In the reactions described above it is essential to work in an inert gas atmosphere, for example with a protective gas such as argon or nitrogen, to exclude atmospheric oxygen. To prepare the compounds of formula I, in which M is hydrogen, the reaction given above followed by a hydrolysis step: gave) Processes such as hydrolysis are known to those skilled in the art and are carried out under generally customary conditions. The hydrolysis of metallized primary or secondary phosphines is described, for example, in Houben-Weyl, XII / 1, pages 56-57. Similarly conceivable is the preparation of compounds (I) by the reaction between a compound of formula (IV) and an alkylphosphine compound in the presence of an acid-binding agent, such as barium carbonate, calcium carbonate or potassium carbonate, as described, for example, in Houben-Weyl, XII / 1, pages 73-74 or in K. Issleib and R. Kümmel, Z. Naturf. B (1967), 22, 784. The compounds of formula I according to the invention are identified by 31 P-NMR spectroscopy and are stable in solution under inert gas at room temperature for a number of weeks. The invention also provides a process for the selective preparation of compounds of formula I by (1) the reaction of an acyl halide of formula IV O II Ar-C-X (IV) in which Ar is as defined in claim 1, and X is Cl or Br; with a dimetallized arilphosphine of formula V R6, R7, R8, R_ and Rio are as defined in claim 1; and i is Na, Li or K; in the molar ratio of 1: 1; Y (2) where appropriate, the subsequent hydrolysis if the compounds of formula I in which M is hydrogen are obtained. Acyl halides (IV) used as starting material are known substances, some of which are commercially available or can be prepared by analogy with known compounds. The preparation of the metallized arylphosphines (V) can, for example, be carried out by reacting suitable phosphorus halides (the preparation of which is known and described, for example, by W. Davies in J. Chem. Soc. (1935) , 462 and J. Chem. Soc. (1944), 276 with the corresponding alkali metal: e ~ Rio have the '' meanings given above. Suitable as metal (Mi) are lithium, sodium or potassium. It is also possible to use mixtures of these metals. Advantageously, from 4 to 8 molar equivalents of alkali metal are used. The reaction is carried out advantageously in a solvent. In particular, as solvents, it is possible to use ethers which are liquids at atmospheric pressure and at room temperature. Examples are dimethyl ether, diethyl ether, methyl propyl ether, 1,2-dimethoxyethane, bis (2-methoxyethyl) ether, dioxane or tetrahydrofuran. Preference is given to the use of tetrahydrofuran. Reaction temperatures are advantageously from -60 ° C to + 120 ° C. The reaction, where appropriate, is carried out with the addition of a catalyst. Suitable catalysts are aromatic hydrocarbons with or without heteroatoms, for example naphthalene, anthracene, phenanthrene, biphenyl, terphenyl, quaternyl, triphenylene, trans-1,2-diphenylenetene, pyrene, perylene, acenaphthalene, decacylene, quinoline, N-ethylcarbazole, dibenzothiophene or dibenzofuran. For the preparation of the compounds of formula I according to the invention in the process according to the invention, the compounds thus obtained of the formula (V) can be used additionally without isolation. Another conceivable method for the preparation of metallized arylphosphines is, for example, the reaction of suitable arylphosphines with the corresponding alkali metal hydride or an alkyllithium compound with the exclusion of air in an inert solvent at temperatures of for example -80 ° C to + 120 ° C. Advantageously, 2 to 4 molar equivalents of the alkali metal hydrides or alkyllithium compound are used. The suitable solvents are by Examples are ethers as described above, or inextensive solvents, such as alkanes, cycloalkanes or aromatic solvents such as toluene, xylene, mesylylene. Suitable arylphosphines can be prepared by reducing aryldichlorophosphines [Ar-P-Cl 2], arylphosphonic esters [Ar-P-0 (OR ') 2] and arylphosphonous esters [Ar-P (OR') 2] using LiAlH 4; SiHCl3; Ph2SiH2 (Ph = phenyl); a) LiH, b) H20; a) Li / tetrahydrofuran, b) H20 or a) Na / toluene, b) H20. These methods are described, for example US 6020528 (Col. 5-6). Hydrogenations using LiAlH4 are given, for example, in Helv. Chim. Acta 1966, No. 96, 842. The compounds of formula I are particularly suitable for the preparation of unsymmetrical mono- and bisacylphosphines, mono- and bisacylphosphine oxides, and mono- and bisacylphosphine sulfides. "Non-symmetrical" means in this context that bisacylphosphines, bisacylphosphine oxides and bisacylphosphine sulfides, two different acyl groups are present, and in monoacylphosphines, monoacylphosphine oxides and monoacylphosphine sulfites, in addition to the acyl group, two different radicals are attached to the phosphorus atom. Such "unsymmetrical" mono- and bisacylphosphines, mono- and bisacylphosphine oxides, and mono- and bisacylphosphine sulfides are, with a few exceptions, novel.

Accordingly, the invention also provides compounds of formula II A is 0 or S; X is 0 or 1; Ar is an Ar group is cyclopentyl, cyclohexyl, naphthyl, biphenylyl, anthracyl, or a 5- or 6-membered heterocyclic ring containing 0-, S-, or N-, wherein the cyclopentyl, cyclohexyl, naphthyl, biphenylyl, anthracyl, or a 5- or 6-membered heterocyclic ring containing 0-, S- or N- are not substituted or substituted by halogen, C? -C4 alkyl and / or C? ~ C alkoxy; R 1 and R 2 independently of one another are C 1 -C 20 alkyl, OR n, CF 3 or halogen; R3. R and R5 independently of one another are hydrogen, C?-C2o alkyl, 0R? or halogen; or in each case two of the radicals Rx, R2, R3, R4 and / or R5 together form alkylene of C? -C20 which may be interrupted by O, S or NR? 4; Re, R7, Re, Rg and Rio independently of each other are hydrogen, C? -C2o alkyl; C2-C2o alkyl, which is interrupted once or more than once by non-consecutive 0 atoms and which may be substituted by OH and / or SH; or R6, R7, Rs, R9 and Rio are ORn, phenyl or halogen; R 11 is hydrogen, C 1 -C 2 alkyl, C 2 -C 20 alkenyl, C 3 -C 8 cycloalkyl, phenyl, benzyl or C 2 -C 2 alkyl which is interrupted once or more than once by non-consecutive O atoms and which is not substituted or substituted by OH and / or SH; Yi is C? -C? 8 alkyl which is unsubstituted or one or more phenyl; Halogenoalkyl of C? -C? 8; C 2 -C 8 alkyl which is interrupted once or more than once by O or S and which may be substituted by OH and / or SH; unsubstituted C3-C18 cycloalkyl or C3-C18 cycloalkyl substituted by C? -C2o alkyl, ORn, CF3 or halogen; C2-C8 alkenyl; naphthyl, biphenylyl, anthracyl, or a 5-6 membered heterocyclic ring containing O, S, or N, where the naphthyl, biphenylyl, anthracyl, or 5- or 6-membered heterocyclic ring containing -O-, S-, or N- they are not substituted or substituted by halogen, C 1 -C 4 alkyl and / or C 1 -C 4 alkoxy; Y2 is a direct bond, Ci-Ciß alkylene optionally substituted by phenyl; unsubstituted C 4 -C 8 cycloalkylene or C 4 -C 18 cycloalkylene substituted by C 1 -C 12 alkyl, OR 2, halogen and / or phenyl; unsubstituted C5-C? 8 cycloalkenylene or Cs-Ci cycloalkenylene, substituted by C? -C? 2 alkyl, OR?, halogen and / or phenyl; unsubstituted phenylene or phenylene substituted one to four times by C? -C12 alkyl, OR?, halogen, ~ (CO) OR? 4, - (CO) N (R12) (R13) and / or phenyl; or Y2 is a radical wherein said radicals are unsubstituted or substituted one to four times on one or both aromatic rings by C? -C12 alkyl, OR?, halogen and / or phenyl; Y3 is O, S, SO, S02, CH2, C (CH3) 2, CHCH3, C (CF3) 2, (CO) or a direct bond; R12 and R13 independently of each other are hydrogen, C? -C20 alkyl, C3-C8 cycloalkyl, phenyl, benzyl or C2-C2 alkyl which is interrupted once or more than once by 0 or S and which is not substituted or substituted by OH and / or SH; or R12 and R13- together are C3-C5 alkylene which may be interrupted by 0, S or NR? 4; Ri 4 is hydrogen, phenyl, C 1 -C 2 alkyl or C 2 -C 2 alkyl which is interrupted once or more than once by 0 or S and which may be substituted by OH and / or SH; Ri 'and R2' independently of each other have the same meanings as were given for Rx and R2; and R3 ', R "' and Rs' independently of each other have the same meaning as were given for R3, R4 and R5; with the condition of if Yx is a radical, naphthyl, biphenylyl, antracilo or a 5 or 6 membered heterocyclic ring containing O-, S- or N, this is not identical to the other benzyl group on the phosphorus atom. In the compounds of formula II, the preferred meanings for the radicals Rx, R2, R3, R4, R5, Re, R7, R8, Rg and R.sub.o are analogous to those given for the compounds of formula I. The preferred Rx ', R2', R3 ', R4' and s' also correspond to those given for the radicals Rx, R2, R3, R4, R5, R6. , R7, R8, Rg and R? O • In the compounds of formula II, x is preferably 1. In particular, A is oxygen. Of particular importance are the compounds of formula II in which Y is C? -C12 alkyl, in particular branched C? -C? 2 alkyl; unsubstituted C 3 -C 8 cycloalkyl or C 3 -C 8 cycloalkyl substituted by C 1 -C 20 alkyl, OR, CF3 or halogen; or is Yi as C? -C? 2 alkyl? it is preferably branched at position a in relation to the bond to the group CO. The carbon atom at position a in relation to the group CO is preferably a tertiary carbon atom. The preferred meanings for R ± ', R2', R3 ', R' and R5 'are analogous to those preferred meanings of R ±, R2, R3, R4 and R5 given above for formula I. Also of interest are the compounds of formula II, in which Ri, R2 and R3 are C1-C4 alkyl, in particular methyl; Ri 'and R2' are C 1 -C 4 alkoxy, in particular methoxy, or chloro; and R4 / R5, R3 ', R4' and R5 'are hydrogen.

In the preferred compounds of formula II, A is oxygen and x is 1; Ri and R2 are C? -C4 alkyl, C? -C4 alkoxy, Cl or CF3; R 3 is hydrogen, C 1 -C 4 alkyl or C 1 -C 4 alkoxy; R4 and R5 are hydrogen; Re, R7, R_, R9 and R? O independently of one another are hydrogen, C? -C? 2 alkyl; ORn, phenyl or halogen; R 11 is hydrogen, C 1 -C 2 alkyl, cyclohexyl, cyclopentyl, phenyl or benzyl; Yx is C? -C12 alkyl which is unsubstituted or substituted by one or more of the phenyl; or Yx is R 2 and Ri 3 independently of one another are C 1 -C 2 alkyl, cyclopentyl, cyclohexyl, phenyl, benzyl or C 2 -C 2 alkyl which is interrupted once or once by non-consecutive O atoms and which is substituted or not by OH and / or SH; or R12 and Ri. together are piperidino, morpholino or piperazino; R 4 is hydrogen or C 1 -C 2 alkyl; Ri 'and R2' have the same meanings as were given for Rx and R2; Y R3 ', R' and Rs' independently of each other have the same meanings as were given for R3, R4 and R5. Examples of preferred compounds of formula II are 2, 4, 6-trimethylbenzoyl-2,6-dimethylbenzoylphenylphosphine oxide; 2,4,6-trimethylobenzoyl-2,6-diethylbenzoylphenylphosphine oxide; 2, 4, 6-trimethylbenzoyl-2, 3,4,5,6-pentamethyl-benzoylphenylphosphine oxide; 2, 4, 6-trimethylbenzoyl-2,3,5,6-tetramethylbenzoylphenylphosphine oxide; 2,4,6-trimethylbenzoyl-2,4,6-triisopropylbenzoylphenylphosphine oxide; 2.4, 6-trimethylbenzoyl-2,, 5,6-tetramethylbenzoylphenyl phosphine oxide; 2, 4, 6-trimethylbenzoyl-2,4,6-tri-tert-butylbenzoylphenylphosphine oxide; 2, 4, 6-trimethylbenzoyl-2,6-dimethyl-4-tert-butylbenzoylphenylphosphine oxide; 2,4,6-trimethylbenzoyl-2,6-diphenoxymethylbenzoylphenylphosphine oxide; 2,4,6-trimethylbenzoyl-2-, 3,6-trimethylbenzoylphenylphosphine oxide; 2, 4, 6-trimethylbenzoyl-2, 3, 4, 6-tetramethylbenzoyl-phenylphosphine oxide; 2, 4, 6-trimethylbenzoyl-2-phenyl-6-methylbenzoylphenylphosphine oxide; 2,, 6-trimethylbenzoyl-2,4,6-trimethoxybenzoylphenylphosphine oxide; 2,4,6-trimethylbenzoyl-2,4-dimethoxybenzoylphenylphosphine oxide; 2,4,6-trimethylbenzoyl-2-, 3,6-trimethoxybenzoylphenylphosphine oxide; 2, 4, 6-trimethylbenzoyl-2,6-diethoxybenzoyl-phenylphosphine oxide; 2, 4, ß-trimethylbenzoyl-2,6-dimethoxy- oxide 3, 5-dimethylbenzoylphenylphosphine; 2,4,6-tri-methylbenzoyl-2,6-dimethoxy-4-methylbenzoylphenylphosphine oxide; 2.4, 6-trimethylbenzoyl-2-, 6-dimethoxy-3-bromobenzoyl-phenylphosphine oxide; 2, 4, 6-trimethylbenzoyl-2,6-dimethoxy-3-chlorobenzoylphenylphosphine oxide; 2, 4, 6-trimethylbenzoyl-2,6-dimethoxy-3-chloro-5-bromobenzoylphenylphosphine oxide; 2,4,6-trimethylbenzoyl-2,6-dimethoxy-3,5-dichlorobenzoylphenylphosphine oxide; 2, 4, 6-trimethylbenzoyl-2, 3, 6-trimethoxy-5-bromo-benzoylphenylphosphine oxide; 2, 4, 6-trimethylbenzoyl-2,6-dichlorobenzoylphenylphosphine oxide; 2, 4, 6-trimethylbenzoyl-2,4,6-trichlorobenzoylphenylphosphine oxide; 2,, 6-trimethyl-benzoyl-2,3,6-trichlorobenzoylphenylphosphine oxide; 2,4,6-trimethylbenzoyl-2,3,5,6-tetrachlorobenzoylphenylphosphine oxide; 2,4,6-trimethylbenzoyl-2, 3,4,5,6-pentachlorobenzoyl-phenylphosphine oxide; 2,, 6-trimethylbenzoyl-2,6-dichloro-3-methylbenzoylphenylphosphine oxide; 2, 4, 6-trimethylbenzoyl-2-chloro-6-methylbenzoylphenylphosphine oxide; 2,4,6-tri-methylbenzoyl-2-methoxy-3,6-dichlorobenzoylphenylphosphine oxide; 2, 4, 6-trimethylbenzoyl-2-methoxy-6-chlorobenzoylphenylphosphine oxide; 2, 4, 6-trimethylbenzoyl-2,6-bis (trifluoromethyl) benzoylphenylphosphine oxide; 2, 4, 6-trimethylbenzoyl-2-chloro-6-methylthiobenzoylphenylphosphine oxide; 2,4,6-trimethylbenzoyl-2,6-dibromobenzoylphenylphosphine oxide; 2,6-dimethoxybenzoyl-2,6-dimethylbenzoylphenylphosphine oxide; 2,6-dimethoxybenzoyl-2,6-diethylbenzoylphenylphosphine oxide; 2,6- oxide dimethoxybenzoyl-2,4,6-trimethylbenzoylphenylphosphine; 2, 6-dimethoxybenzoyl-2, 3,4,5,6-pentamethylbenzoylphenylphosphine oxide; 2, 6-dimethoxybenzoyl-2, 3, 5, 6-tetramethyl-benzoylphenylphosphine oxide; 2-6-dimethoxybenzoyl-2,4,6-triisopropylbenzoylphenylphosphine oxide; 2, 6-dimethoxy-benzoyl-2,4,5,6-tetramethylbenzoylphenylphosphine oxide; 2,6-dimethoxybenzoyl-2,4,6-tri-tert-butylbenzoylphenylphosphine oxide; 2, 6-dimethoxybenzoyl-2,6-dimethyl-4-tert-butyl-benzoylphenylphosphine oxide; 2, 6-dimethoxybenzoyl-2,6-diphenoxymethyl-benzoylphenylphosphine oxide; 2, 6-dimethoxybenzoyl-2,3,6-trimethylbenzoylphenylphosphine oxide; 2, 6-dimethoxybenzoyl-2, 3, 4, 6-tetramethylbenzoylphenylphosphine oxide; 2, 6-dimethoxybenzoyl-2-phenyl-6-methylbenzoylphenylphosphine oxide; 2, 6-dimethoxybenzoyl-2,4,6-tri-methoxybenzoylphenylphosphine oxide; 2, 6-dimethoxybenzoyl-2,4-dimethoxybenzoylphenylphosphine oxide; 2, 6-dimethoxybenzoyl-2, 3, 6-trimethoxybenzoylphenylphosphine oxide; oxide of 2,6-dimethoxybenzoyl-2,6-diethoxybenzoylphenylphosphine; 2, 6-dimethoxybenzoyl-2,6-dimethoxy-3,5-dimethylbenzoylphenylphos-fine oxide; 2, 6-dimethoxybenzoyl-2,6-dimethoxy-4-methylbenzoylphenylphosphine oxide; 2, 6-dimethoxybenzoyl-2,6-dimethoxy-3-bromobenzoylphenylphosphine oxide; 2,6-dimethoxybenzoyl-2,6-dimethoxy-3-chlorobenzoylphenylphosphine oxide; 2, 6-dimethoxybenzoyl-2,6-dimethoxy-3-chloro-5-bromo-benzoylphenylphosphine oxide; 2, 6-dimethoxybenzoyl-2, 6- oxide dimethoxy-3,5-dichlorobenzoylphenylphosphine; 2,6-di-methoxybenzoyl-2,3,6-trimethoxy-5-bromobenzoylphenylphosphine oxide; 2, 6-dimethoxybenzoyl-2,6-dichlorobenzoylphenylphosphine oxide; 2, 6-dimethoxybenzoyl-2,4,6-trichloro-benzoylphenylphosphine oxide; 2, 6-dimethoxybenzoyl-2,3,6-trichlorobenzoylphenylphosphine oxide; 2, 6-dimethoxybenzoyl-2,3,5,5,6-tetrachlorobenzoylphenylphosphine oxide; 2,6-dimethoxybenzoyl-2, 3,4,5,6-pentachlorobenzoylphenylphosphine oxide; 2-6-dimethoxybenzoyl-2,6-dichloro-3-methylbenzoyl-phenylphosphine oxide; 2, 6-dimethoxybenzoyl-2-chloro-6-methylbenzoylphenylphosphine oxide; 2, 6-dimethoxybenzoyl-2-methoxy-3,6-dichlorobenzoylphenylphosphine oxide; 2,6-dimethoxybenzoyl-2-methoxy-6-chlorobenzoylphenylphosphine oxide; 2-6-dimethoxybenzoyl-2,6-bis (trifluoromethyl) benzoylphenyl-phosphine oxide; 2, 6-dimethoxybenzoyl-2-chloro-6-methylthio-benzoylphenylphosphine oxide; 2, 6-dimethoxybenzoyl-2,6-dibromobenzoylphenylphosphine oxide; 2, 6-dichlorobenzoyl-2,6-dimethylbenzoylphenylphosphine oxide; 2, 6-dichlorobenzoyl-2,6-diethylbenzoylphenylphosphine oxide; 2, 6-dichlorobenzoyl-2,4,6-trimethylbenzoylphenylphosphine oxide; 2, 6-dichlorobenzoyl-2, 3,, 5, 6-pentamethylbenzoylphenylphosphine oxide; 2,6-dichlorobenzoyl-2,3,5,6-tetramethylbenzoylphenylphosphine oxide; 2, 6-dichlorobenzoyl-2,4,6-triisopropylbenzoylphenylphosphine oxide; 2, 6-dichlorobenzoyl-2,4,5,6-tetramethylbenzoylphenylphosphine oxide; 2, 6-dichlorobenzoyl-2, 4, 6 oxide tri-tert-butylbenzoylphenylphosphine; 2,6-dichlorobenzoyl-2,6-dimethyl-4-tert-butylbenzoylphenylphosphine oxide; 2, 6-dichlorobenzoyl-2,6-diphenoxymethylbenzoyl-phenylphosphine oxide; 2, 6-dichlorobenzoyl-2,3,6-trimethylbenzoylphenylphosphine oxide; 2, 6-dichlorobenzoyl-2, 3, 4, 6-tetramethylbenzoylphenylphosphine oxide; 2,6-dichlorobenzoyl-2-phenyl-6-methylbenzoylphenylphosphine oxide; 2, 6-dichlorobenzoyl-2,4,6-trimethoxybenzoylphenylphosphine oxide; 2, 6-dichlorobenzoyl-2,4-dimethoxybenzoylphenylphosphine oxide; 2, 6-dichlorobenzoyl-2,3,6-trimethoxybenzoylphenylphosphine oxide; 2, 6-dichlorobenzoyl-2,6-diethoxybenzoylphenylphosphine oxide; 2, 6-dichlorobenzoyl-2,6-dimethoxy-3,5-dimethylbenzoylphenylphosphine oxide; 2, 6-dichlorobenzoyl-2,6-dimethoxy-4-methylbenzoylphenylphosphine oxide; 2,6-dichlorobenzoyl-2,6-dimethoxy-3-bromobenzoylphenylphosphine oxide; 2, 6-dichlorobenzoyl-2,6-dimethoxy-3-chlorobenzoyl-phenylphosphine oxide; 2, 6-dichlorobenzoyl-2,6-dimethoxy-3-chloro-5-bromobenzoylphenylphosphine oxide; 2,6-dichlorobenzoyl-2,6-dimethoxy-3,5-dichlorobenzoylphenylphosphine oxide; 2, 6-dichlorobenzoyl-2,3,6-trimethoxy-5-bromobenzoyl-phenylphosphine oxide; 2, 6-dichlorobenzoyl-2, 6-trichloro-benzoylphenylphosphine oxide; 2, 6-dichlorobenzoyl-2,3,6-trichlorobenzoylphenylphosphine oxide; 2, 6-dichlorobenzoyl-2,3,5,5,6-tetrachlorobenzoylphenylphosphine oxide; 2, 6-dichloro-benzoyl-2, 3, 4, 5, 6-pentachlorobenzoylphenylphosphine oxide; oxide of 2,6-dichlorobenzoyl-2,6-dichloro-3-methylbenzoylphenylphosphine; 2, 6-dichlorobenzoyl-2-chloro-6-methyl-benzoylphenylphosphine oxide; 2, 6-dichlorobenzoyl-2-methoxy-3,6-dichlorobenzoylphenylphosphine oxide; 2, 6-dichlorobenzoyl-2-methoxy-6-chlorobenzoylphenylphosphine oxide; 2,6-dichlorobenzoyl-2,6-bis (trifluoromethyl) benzoylphenylphosphine oxide; 2, 6-dichloro-benzoyl-2-chloro-6-methylthiobenzoylphenylphosphine oxide; 2, 6-dichlorobenzoyl-2,6-dibromo-benzoylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoyl-2,6-dimethylbenzoylphenylphosphine oxide; 2, 6-bis (trifluoromethyl) -benzoyl-2,6-diethylbenzoylphenylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoyl-2-, 4,6-trimethylbenzoylphenylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoyl-2-, 3,4,5,6-pentamethyl-benzoylphenylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoyl-2,3,5,6-tetramethylbenzoylphenylphosphine oxide; 2,6-bis (trifluoromethyl) benzoyl-2,4,6-triisopropylbenzoylphenylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoyl-2,4,5,6-tetramethylbenzoylphenylphosphine oxide; 2,6-bis (trifluoromethyl) benzoyl-2-, 4,6-tri-tert-butylbenzoylphenyl phosphine oxide; 2, 6-bis (trifluoromethyl) benzoyl-2,6-dimethyl-4-tert-butylbenzoylphenylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoyl-2-, 6-diphenoxymethylbenzoylphenylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoyl-2,3,6-trimethylbenzoylphenylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoyl-2,3,4,6-tetxamethylbenzoylphenylphosphine oxide; 2,6- oxide bis (trifluoromethyl) benzoyl-2-phenyl-6-methylbenzoylphenylphosphine; 2, 6-bis (trifluoromethyl) benzoyl-2,4,6-trimethoxybenzoylphenylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoyl-2,4-dimethoxybenzoylphenylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoyl-2,3,6-trimethoxybenzoylphenylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoyl-2,6-diethoxybenzoylphenylphosphine oxide; 2,6-bis (trifluoromethyl) benzoyl-2,6-dimethoxy-3,5-dimethylbenzoyl-phenylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoyl-2,6-dimethoxy-4-methylbenzoylphenylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoyl-2,6-dimethoxy-3-bromobenzoylphenylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoyl-2,6-dimethoxy-3-chlorobenzoylphenylphosphine oxide; 2, 6-bis (trifluoromethyl) -benzoyl-2,6-dimethoxy-3-chloro-5-bromobenzoylphenylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoyl-2,6-dimethoxy-3,5-dichlorobenzoyl-phenylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoyl-2,3,6-trimethoxy-5-bromobenzoylphenylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoyl-2,6-dichloro-benzoylphenylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoyl-2,4,6-trichlorobenzoylphenylphosphine oxide; 2,6-bis (trifluoromethyl) enzoyl-2,3,6-trichlorobenzoylphenylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoyl-2,3,5,6-tetrachloro-benzoylphenylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoyl-2,3,4,5,6-pentachlorobenzoylphenylphosphine oxide; 2,6-bis- (trifluoromethyl) benzoyl-2,6-dichloro-3-methylbenzoylphenylphos- fine; 2, 6-bis (trifluoromethyl) benzoyl-2-chloro-6-methylbenzoylphenylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoyl-2-methoxy-3,6-dichlorobenzoylphenylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoyl-2-methoxy-6-chloro-benzoylphenylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoyl-2-chloro-6-methylthiobenzoylphenylphosphine oxide; 2,6-bis (trifluoromethyl) benzoyl-2,6-dibromobenzoylphenylphosphine oxide; 2, 6-dimethylbenzoyl-2,6-diethylbenzoylphenylphosphine oxide; 2, 6-dimethylbenzoyl-2,4,6-trimethylbenzoylphenylphosphine oxide; 2, 6-dimethylbenzoyl-2, 3, 4, 5, 6-pentamethylbenzoylphenylphosphine oxide; 2,6-dimethylbenzoyl-2,3,5,6-tetramethylbenzoylphenylphosphine oxide; 2, 6-dimethylbenzoyl-2,4,6-triisopropylbenzoylphenylphosphine oxide; 2, 6-dimethylbenzoyl-2,4,5,6-tetramethylbenzoylphenyl phosphine oxide; 2, 6-dimethylbenzoyl-2,, 6-tri-tert-butylbenzoylphenylphosphine oxide; 2, 6-dimethylbenzoyl-2,6-dimethyl-4-tert-butylbenzoylphenylphosphine oxide; 2,6-dimethyl-benzoyl-2,6-diphenoxymethylbenzoylphenylphosphine oxide; 2, 6-dimethylbenzoyl-2,3,6-trimethylbenzoylphenylphosphine oxide; 2, 6-dimethylbenzoyl-2, 3,, 6-tetramethylbenzoylphenylphosphine oxide; 2, 6-dimethylbenzoyl-2-phenyl-6-methylbenzoylphenylphosphine oxide; 2, 6-dimethylbenzoyl-2,4,6-trimethoxybenzoylphenylphosphine oxide; 2, 6-dimethylbenzoyl-2,4-dimethoxybenzoylphenylphosphine oxide; 2, 6-dimethylbenzoyl-2,3,6-trimethoxybenzoylphenylphosphine oxide; 2,6- oxide dimethylbenzoyl-2,6-diethoxybenzoylphenylphosphine; 2,6-dimethylbenzoyl-2,6-dimethoxy-3,5-dimethylbenzoylphenylphosphine oxide; 2, 6-dimethylbenzoyl-2,6-dimethoxy-4-methylbenzoylphenylphosphine oxide; 2, 6-dimethylbenzoyl-2,6-dimethoxy-3-bromobenzoylphenylphosphine oxide; 2,6-dimethyl-benzoyl-2,6-dimethoxy-3-chlorobenzoylphenylphosphine oxide; 2, 6-dimethylbenzoyl-2,6-dimethoxy-3-chloro-5-bromobenzoylphenylphosphine oxide; 2, 6-dimethylbenzoyl-2,6-dimethoxy-3,5-dichlorobenzoylphenylphosphine oxide; 2, 6-dimethylbenzoyl-2,3,6-trimethoxy-5-bromobenzoylphenylphosphine oxide; 2,6-dimethylbenzoyl-2,6-dichlorobenzoylphenylphosphine oxide; 2,6-dimethylbenzoyl-2,4,6-trichlorobenzoylphenylphosphine oxide; 2, 6-dimethylbenzoyl-2,3,6-trichlorobenzoylphenylphosphine oxide; 2, 6-dimethylbenzoyl-2, 3, 5, 6-tetrachlorobenzoylphenylphosphine oxide; 2, 6-dimethylbenzoyl-2, 3, 4, 5, 6-penta-chlorobenzoylphenylphosphine oxide; 2, 6-dimethylbenzoyl-2,6-dichloro-3-methylbenzoylphenylphosphine oxide; 2,6-dimethylbenzoyl-2-chloro-6-methylbenzoylphenylphosphine oxide; 2, 6-dimethylbenzoyl-2-methoxy-3,6-dichlorobenzoylphenylphosphine oxide; 2, 6-dimethylbenzoyl-2-methoxy-6-chlorobenzoylphenylphosphine oxide; 2, 6-dimethylbenzoyl-2,6-bis- (trifluoromethyl) benzoylphenylphosphine oxide; 2,6-dimethylbenzoyl-2-chloro-6-methylthiobenzoylphenylphosphine oxide; 2, 6-dimethylbenzoyl-2,6-dibromobenzoylphenylphosphine oxide; 2,3,4,6-tetramethylbenzoyl-2,6-dimethylbenzoylphenylphosphine oxide; 2, 3, 4,6-tetramethylbenzoyl-2,6-diethylbenzoylphenylphosphine oxide; 2,3,4,6-tetramethylbenzoyl-2,4,6-trimethylbenzoylphenylphosphine oxide; 2,3,4,6-tetramethylbenzoyl-2, 3, 4, 5, 6-pentamethylbenzoylphenyl phosphine oxide; 2, 3, 4, 6-tetramethylbenzoyl-2, 3, 3, 5, 6-tetraethylbenzoylphenylphosphine oxide; 2,3,4,6-tetramethylbenzoyl-2,4,4,6-triisopropylbenzoylphenylphosphine oxide; 2, 3, 4, 6-tetramethylbenzoyl-2,4,5,6-tetramethyl-benzoylphenylphosphine oxide; 2, 3, 4, 6-tetramethylbenzoyl-2,4,6-tri-tert-butylbenzoylphenylphosphine oxide; 2,3,4,6-tetramethylbenzoyl-2,6-dimethyl-4-tert-butylbenzoylphenylphosphine oxide; 2, 3, 4, 6-tetramethylbenzoyl-2,6-diphenoxymethylbenzoylphenylphosphine oxide; 2, 3, 4, 6-tetra-methylbenzoyl-2,3,6-trimethylbenzoylphenylphosphine oxide; 2, 3, 6-tetramethylbenzoyl-2,3,4,6-tetramethylbenzoylphenylphosphine oxide; 2, 3, 4, 6-tetramethylbenzoyl-2-phenyl-6-methylbenzoylphenylphosphine oxide; 2,3,4,6-tetramethylbenzoyl-2,4,6-trimethoxybenzoylphenylphosphine oxide; 2,3,4,6-tetramethylbenzoyl-2,4-dimethoxybenzoylphenylphosphine oxide; 2, 3, 6-tetramethylbenzoyl-2,3,6-trimethoxybenzoylphenylphosphine oxide; 2, 3, 4,6-tetra-methylbenzoyl-2,6-diethoxybenzoylphenylphosphine oxide; 2,3,4,6-tetramethylbenzoyl-2,6-dimethoxy-3,5-dimethylbenzoyl-phenylphosphine oxide; 2, 3, 4, 6-tetramethylbenzoyl-2,6-dimethoxy-4-methylbenzoylphenylphosphine oxide; 2,3,4,6- oxide tetramethylbenzoyl-2,6-dimethoxy-3-bromobenzoylphenylphosphine; 2, 3, 4, 6-tetramethylbenzoyl-2,6-dimethoxy-3-chlorobenzoylphenylphosphine oxide; 2, 3, 4, 6-tetramethylbenzoyl-2,6-dimethoxy-3-chloro-5-bromobenzoylphenylphosphine oxide; 2,3,4,6-tetramethylbenzoyl-2,6-dimethoxy-3,5-dichlorobenzoyl-phenylphosphine oxide; 2, 3, 4, 6-tetramethylbenzoyl-2,3,6-trimethoxy-5-bromobenzoylphenylphosphine oxide; 2,3,4,6-tetramethylbenzoyl-2,6-dichlorobenzoylphenylphosphine oxide; 2,3,4,6-tetramethylbenzoyl-2, 6-trichlorobenzoylphenylphosphine oxide; 2, 3, 4, 6-tetramethylbenzoyl-2,3,6-trichlorobenzoylphenylphosphine oxide; 2, 3, 6-tetra-methylbenzoyl-2,3,5,6-tetrachlorobenzoylphenylphosphine oxide; 2,3,4,6-tetramethylbenzoyl-2, 3,4,5,6-pentachlorobenzoyl-phenylphosphine oxide; 2, 3, 6-tetramethylbenzoyl-2,6-dichloro-3-methylbenzoylphenylphosphine oxide; 2,3,4,6-tetramethylbenzoyl-2-chloro-6-methylbenzoylphenylphosphine oxide; 2,3,4,6-tetramethylbenzoyl-2-methoxy-3,6-dichlorobenzoyl-phenylphosphine oxide; 2, 3, 4, 6-tetramethylbenzoyl-2-methoxy-6-chlorobenzoylphenylphosphine oxide; 2, 3, 4, 6-tetramethylbenzoyl-2,6-bis (trifluoromethyl) benzoylphenylphosphine oxide; 2,3,4,6-tetramethylbenzoyl-2-chloro-6-methylthiobenzoylphenylphosphine oxide; 2, 3, 4, 6-tetramethylbenzoyl-2,6-dibromobenzoylphenylphosphine oxide; 2, 4, 6-trimethoxybenzoyl-2,6-dimethylbenzoylphenylphosphine oxide; 2,4,6-trimethoxybenzoyl-2,6-diethylbenzoylphenylphosphine oxide; oxide of 2,4,6-trimethoxybenzoyl-2,4,6-trimethylbenzoylphenylphosphine; 2, 4, 6-trimethoxybenzoyl-2, 3, 4, 5, 6-pentamethylbenzoylphenylphosphine oxide; 2,4,6-trimethoxybenzoyl-2,3,5,6-tetramethylbenzoylphenylphosphine oxide; 2,, 6-trimethoxybenzoyl-2,, 6-triisopropylbenzoylphenylphosphine oxide; 2,, 6-trimethoxybenzoyl-2,4,5,6-tetramethylbenzoylphenylphosphine oxide; 2,4,6-trimethoxybenzoyl-2,4,6-tri-tert-butylbenzoylphenylphosphine oxide; 2, 6-trimethoxybenzoyl-2,6-dimethyl-4-tert-butyl-benzoylphenylphosphine oxide; 2, 4, 6-trimethoxybenzoyl-2,6-diphenoxymethylbenzoylphenylphosphine oxide; 2,4,6-trimethoxybenzoyl-2,3,6-trimethylbenzoylphenylphosphine oxide; 2, 4, 6-trimethoxybenzoyl-2,3,4,6-tetramethylbenzoylphenylphosphine oxide; 2,, 6-trimethoxybenzoyl-2-phenyl-6-methylbenzoylphenylphosphine oxide; 2, 4, 6-trimethoxybenzoyl-2,4-dimethoxybenzoylphenylphosphine oxide; 2,4,6-trimethoxybenzoyl-2,3,6-trimethoxybenzoylphenylphosphine oxide; 2, 4, 6-trimethoxybenzoyl-2,6-diethoxybenzoylphenylphosphine oxide; 2,4,6-trimethoxybenzoyl-2,6-dimethoxy-3,5-dimethylbenzoyl-phenylphosphine oxide; 2, 4, 6-trimethoxybenzoyl-2,6-dimethoxy-4-methylbenzoylphenylphosphine oxide; 2,, 6-trimethoxybenzoyl-2,6-dimethoxy-3-bromobenzoylphenylphosphine oxide; 2, 4, 6-trimethoxybenzoyl-2,6-dimethoxy-3-chlorobenzoylphenyl phosphine oxide; 2, 4, 6-trimethoxybenzoyl-2,6-dimethoxy-3-chloro-5-bromobenzoylphenylphosphine oxide; 2,4,6-tri- oxide methoxybenzoyl-2,6-dimethoxy-3,5-dichlorobenzoylphenylphosphine; 2, 4, 6-trimethoxybenzoyl-2,3,6-trimethoxy-5-bromobenzoylphenylphosphine oxide; 2, 4, 6-trimethoxybenzoyl-2,6-dichlorobenzoylphenylphosphine oxide; 2,4,6-trimethoxybenzoyl-2,4,6-trichlorobenzoylphenylphosphine oxide; 2, 4, 6-trimethoxybenzoyl-2,3,6-trichlorobenzoylphenylphosphine oxide; 2, 4, 6-trimethoxybenzoyl-2, 3,5,5,6-tetrachlorobenzoyl-phenylphosphine oxide; 2, 4, 6-trimethoxybenzoyl-2, 3, 4, 5, 6-pentachlorobenzoylphenylphosphine oxide; 2,, 6-trimethoxy-benzoyl-2,6-dichloro-3-methylbenzoylphenylphosphine oxide; 2, 4, 6-trimethoxybenzoyl-2-chloro-6-methylbenzoylphenylphosphine oxide; 2, 4, 6-trimethoxybenzoyl-2-methoxy-3,6-dichloro-benzoylphenylphosphine oxide; 2, 4, 6-trimethoxybenzoyl-2-methoxy-6-chlorobenzoylphenylphosphine oxide; rust 2,4,6-trimethoxybenzoyl-2,6-bis (trifluoromethyl) benzoylphenylphosphine; 2r, 6-trimethoxybenzoyl-2-chloro-6-methylthio-benzoylphenylphosphine oxide; 2, 4, 6-trimethoxybenzoyl-2,6-dibromobenzoylphenylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoyl-2,6-dimethylbenzoylphenylphosphine oxide; 2,6-dimethyl-4-tert-butylbenzoyl-2,6-diethylbenzoylphenylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoyl-2,, 6-trimethylbenzoylphenylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoyl-2, 3,4,5,6-pentamethylbenzoylphenylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoyl-2,3,5,6-tetramethylbenzoylphenylphosphine oxide; 2, 6-dimethyl-4-ter- 7í butylbenzoyl-2,, 6-triisopropylbenzoylphenylphosphine; 2, 6-dimethyl-4-tert-butylbenzoyl-2,4,5,6-tetramethyl-benzoylphenylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoyl-2,4,6-tri-tert-butylbenzoylphenylphosphine oxide; 2,6-dimethyl-4-tert-butylbenzoyl-2,6-dimethyl-4-tert-butylbenzoyl-phenylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoyl-2,6-diphenoxymethylbenzoylphenylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoyl-2,3,6-trimethylbenzoylphenylphosphine oxide; 2,6-dimethyl-4-tert-butylbenzoyl-2, 3,, 6-tetramethylbenzoylphenyl phosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoyl-2-phenyl-6-methylbenzoylphenylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoyl-2,4,6-trimethoxybenzoylphenylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoyl-2,4-dimethoxybenzoyl-phenylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoyl-2,3,6-trimethoxybenzoylphenylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoyl-2,6-diethoxybenzoylphenylphosphine oxide; 2,6-dimethyl-4-tert-butylbenzoyl-2,6-dimethoxy-3,5-dimethylbenzoyl-phenylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoyl-2,6-dimethoxy-4-methylbenzoylphenylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoyl-2,6-dimethoxy-3-bromobenzoylphenylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoyl-2,6-dimethoxy-3-chlorobenzoylphenylphosphine oxide; 2, 6-dimethyl-4-tert-butyl-benzoyl-2,6-dimethoxy-3-chloro-5-bromobenzoylphenylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoyl-2,6-dimethoxy-3,5-dichlorobenzoylphenylphosphine oxide; 2, 6-dimethyl-4-ter- butylbenzoyl-2,3,6-trimethoxy-5-bromobenzoylphenylphosphine; 2, 6-dimethyl-4-tert-butylbenzoyl-2,6-dichlorobenzoylphenylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoyl-2, 6-trichlorobenzoylphenylphosphine oxide; 2,6-dimethyl-4-tert-butylbenzoyl-2,3,6-trichlorobenzoylphenylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoyl-2,3,5,6-tetrachloro-benzoylphenylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoyl-2, 3, 4, 5, 6-pentachlorobenzoylphenylphosphine oxide; 2,6-dimethyl-4-tert-butylbenzoyl-2,6-dichloro-3-methylbenzoylphenyl phosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoyl-2-chloro-6-methylbenzoylphenylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoyl-2-methoxy-3,6-dichlorobenzoylphenylphosphine oxide; ^ 2,6-dimethyl-4-tert-butylbenzoyl-2-methoxy-6-chlorobenzoyl-phenylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoyl-2,6-bis (trifluoromethyl) benzoylphenylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoyl-2-chloro-6-methylthiobenzoylphenylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoyl-2,6-dibromobenzoylphenylphosphine oxide; 2-chloro-6-methylbenzoyl-2,6-dimethylbenzoylphenylphosphine oxide; 2-chloro-6-methylbenzoyl-2,6-diethylbenzoylphenylphosphine oxide; 2-chloro-6-methylbenzoyl-2,4,6-trimethylbenzoylphenylphosphine oxide; 2-chloro-6-methylbenzoyl-2, 3,4,5,6-pentamethylbenzoyl-phenylphosphine oxide; 2-chloro-6-methylbenzoyl-2,3,5,6-tetramethylbenzoylphenylphosphine oxide; 2-chloro-6-methylbenzoyl-2,4,6-triisopropylbenzoylphenylphosphine oxide; oxide of 2-chloro-6-methylbenzoyl-2,, 5,6-tetramethylbenzoylphenylphosphine; 2-chloro-6-methylbenzoyl-2,4,6-tri-tert-butylbenzoyl-phenylphosphine oxide; 2-chloro-6-methylbenzoyl-2,6-dimethyl-4-tert-butylbenzoylphenylphosphine oxide; 2-chloro-6-methylbenzoyl-2,6-diphenoxymethylbenzoylphenylphosphine oxide; 2-chloro-6-methylbenzoyl-2,3,6-trimethylbenzoylphenylphosphine oxide; 2-chloro-6-methylbenzoyl-2, 3, 4, 6-tetramethyl-benzoylphenylphosphine oxide; 2-chloro-6-methylbenzoyl-2-phenyl-6-methylbenzoylphenylphosphine oxide; 2-chloro-6-methylbenzoyl-2,4,6-trimethoxybenzoylphenylphosphine oxide; 2-chloro-6-methylbenzoyl-2,4-dimethoxybenzoylphenylphosphine oxide; 2-chloro-6-methylbenzoyl-2,3,6-trimethoxybenzoylphenylphosphine oxide; 2-chloro-6-methylbenzoyl-2,6-diethoxybenzoyl-phenylphosphine oxide; 2-chloro-6-methylbenzoyl-2,6-dimethoxy-3,5-dimethylbenzoylphenylphosphine oxide; 2-chloro-6-methylbenzoyl-2,6-dimethoxy-4-methylbenzoylphenylphosphine oxide; 2-chloro-6-methylbenzoyl-2,6-dimethoxy-3-bromobenzoylphenylphosphine oxide; 2-chloro-6-methylbenzoyl-2,6-dimethoxy-3-chlorobenzoylphenylphosphine oxide; 2-chloro-6-methylbenzoyl-2,6-dimethoxy-3-chloro-5-bromobenzoylphenylphosphine oxide; 2-chloro-6-methylbenzoyl-2,6-dimethoxy-3,5-dichlorobenzoyl-phenylphosphine oxide; 2-chloro-6-methylbenzoyl-2,3,6-trimethoxy-5-bromobenzoylphenylphosphine oxide; 2-chloro-6-methylbenzoyl-2,6-dichlorobenzoylphenylphosphine oxide; 2-chloro-6-methylbenzoyl-2,4,6-trichlorobenzoylphenylphosphine oxide; 2 oxide chloro-6-methylbenzoyl-2,3,6-trichlorobenzoylphenylphosphine; 2-chloro-6-methylbenzoyl-2,3,5,6-tetrachlorobenzoylphenylphosphine oxide; 2-chloro-6-methylbenzoyl-2, 3, 4, 5, 6-pentachloro-obenzoylphenylphosphine oxide; 2-chloro-6-methylbenzoyl-2,6-dichloro-3-methylbenzoylphenylphosphine oxide; 2-chloro-6-methylbenzoyl-2-methoxy-3,6-dichlorobenzoylphenylphosphine oxide; oxide of. 2-chloro-6-methylbenzoyl-2-methoxy-6-chlorobenzoylphenylphosphine; 2-chloro-6-methylbenzoyl-2,6-bis (trifluoromethyl) benzoylphenylphosphine oxide; 2-chloro-6-methylbenzoyl-2-chloro-6-methylthiobenzoylphenylphosphine oxide; 2-chloro-6-methylbenzoyl-2,6-dibromobenzoylphenylphosphine oxide; 2-chloro-6-methoxybenzoyl-2,6-dimethylbenzoylphenylphosphine oxide; 2-chloro-6-methoxybenzoyl-2,6-diethylbenzoyl-phenylphosphine oxide; 2-chloro-6-methoxybenzoyl-2,4,6-trimethylbenzoylphenylphosphine oxide; 2-chloro-6-methoxybenzoyl-2, 3,, 5, 6-pentamethylbenzoylphenylphosphine oxide; 2-chloro-6-methoxybenzoyl-2,3,5,6-tetramethylbenzoylphenylphosphine oxide; 2-chloro-6-methoxybenzoyl-2,4,6- triisopropylbenzoylphenylphosphine oxide; 2-chloro-6-methoxybenzoyl-2,4,5,6-tetramethyl-benzoylphenylphosphine oxide; 2-chloro-6-methoxybenzoyl-2,4,6-tri-tert-butylbenzoylphenylphosphine oxide; 2-chloro-6-methoxybenzoyl-2,6-dimethyl-4-tert-butylbenzoylphenylphosphine oxide; 2-chloro-6-methoxybenzoyl-2,6-diphenoxymethylbenzoyl-phenylphosphine oxide; 2-chloro-6-methoxybenzoyl-2,3,6-trimethylbenzoylphenylphosphine oxide; 2-chloro-6- oxide methoxybenzoyl-2, 3, 4, 6-tetramethylbenzoylphenylphosphine; 2-chloro-6-methoxybenzoyl-2-phenyl-6-methylbenzoylphenylphosphine oxide; 2-Chloro-6-methoxybenzoyl-2,4,6-trimethoxybenzoylphenylphosphine oxide; 2-chloro-6-methoxybenzoyl-2,4-dimethoxybenzoylphenylphosphine oxide; 2-chloro-6-methoxybenzoyl-2,3,6-trimethoxybenzoylphenylphosphine oxide; 2-chloro-6-methoxybenzoyl-2,6-diethoxybenzoylphenylphosphine oxide; 2-chloro-6-methoxybenzoyl-2,6-dimethoxy-3,5-dimethylbenzoylphenylphosphine oxide; 2-chloro-6-methoxybenzoyl-2,6-dimethoxy-4-methylbenzoylphenylphosphine oxide; 2-chloro-6-methoxybenzoyl-2,6-dimethoxy-3-bromobenzoylphenylphosphine oxide; 2-chloro-6-methoxybenzoyl-2,6-dimet oxide, oxy-3-chlorobenzoylphenylphosphine oxide; 2-chloro-6-methoxybenzoyl-2,6-dimethoxy-3-chloro-5-bromobenzoylphenylphosphine oxide; 2-chloro-6-methoxybenzoyl-2,6-dimethoxy-3,5-dichlorobenzoylphenylphosphine oxide; 2-chloro-6-methoxybenzoyl-2,3,6-trimethoxy-5-bromobenzoylphenylphosphine oxide; 2-chloro-6-methoxybenzoyl-2,6-dichlorobenzoylphenylphosphine oxide; 2-chloro-6-methoxybenzoyl-2,4,6-trichlorobenzoylphenylphosphine oxide; 2-chloro-6-methoxybenzoyl-2,3,6-trichlorobenzoylphenylphosphine oxide; 2-chloro-6-methoxybenzoyl-2,3,5,6-tetrachlorobenzoyl-phenylphosphine oxide; 2-chloro-6-methoxybenzoyl-2, 3, 4, 5, 6-pentachlorobenzoylphenylphosphine oxide; 2-chloro-6-methoxybenzoyl-2,6-dichloro-3-methylbenzoylphenylphosphine oxide; 2-chloro-6-methoxybenzoyl-2-chloro-6-methylbenzoyl- oxide phenylphosphine; 2-chloro-6-methoxybenzoyl-2-methoxy-3,6-dichlorobenzoylphenylphosphine oxide; 2-chloro-6-methoxybenzoyl-2,6-bis (trifluoromethyl) benzoylphenylphosphine oxide; 2-chloro-6-methoxybenzoyl-2-chloro-6-methylthiobenzoylphenylphosphine oxide; 2-chloro-6-methoxybenzoyl-2,6-dibromobenzoylphenylphosphine oxide. The compounds of formula II where x = 0 (formula II ') are obtained by reacting an arylacrylphosphine of the formula I with an acid halide of formula (IV): (I) (IV) (II ') The meanings of the radicals Ar, Re-Rio, M, X, A, x and Ii are as described above. The starting materials are advantageously reacted in a molar ratio of 1: 1. A slight excess of one or other of the components, for example of up to 20%, however, is not critical. In this case the desired product is also formed, although the undesirable byproduct portion can be influenced. The reaction conditions for this reaction correspond to those given above in relation to the preparation of the compounds of formula I.

The compounds of formula II wherein x = 1 and A is oxygen are prepared by oxidation of the compounds of formula (II '), and the compounds of formula II wherein A is sulfur and are prepared by the sulfurization of the compounds of formula II ': (II ') (II) Prior to oxidation or sulfidation, phosphine II' can be isolated by customary separation methods familiar to those skilled in the art, although the reaction can also be carried out immediately after the reaction step previous without isolation of phosphine. During the preparation of the oxide, the oxidation of the phosphine is carried out using the oxidizing agents customary in the art. Suitable oxidizing agents are mainly hydrogen peroxide and compounds hydroxiorganic, for example peracetic acid or t-butyl hydroperoxide, air or pure oxygen. Oxidation is advantageously carried out in solution. Suitable solvents are aromatic hydrocarbons, for example benzene, toluene, m-xylene, p-xylene, ethylbenzene or mesitylene, or aliphatic hydrocarbons, for example alkanes and alkane mixtures, such as petroleum ether, hexane or cyclohexane. Further suitable examples are dimethyl ether, diethyl ether, methyl propyl ether, 1,2-dimethoxyethane, bis (2-methoxyethyl) ether, dioxane or tetrahydrofuran. Preference is given to the use of toluene. The reaction temperature during oxidation is advantageously maintained between 0 ° and 120 ° C, preferably between 20 ° and 80 ° C. The reaction products of formula (II) can be isolated and purified by customary processing measures familiar to those skilled in the art. The preparation of the respective sulfide is carried out by the reaction with sulfur. The bisacylphosphines (II ') are reacted here with a 2-fold equimolar amount of elemental sulfur, for example, without a diluent or optionally in a suitable molar solvent. Examples of suitable solvents are those described for the oxidation reaction. However, it is also possible to use, for example, aliphatic or aromatic ethers, for example dibutyl ether, dioxane, diethylene glycol dimethyl ether or diphenyl ether at temperatures of 20 ° to 250 ° C, preferably 60 ° to 120 ° C. The resulting bisacylphosphine sulfide or its solution is advantageously released from any elemental sulfur that may still be present by filtration. After removal of the solvent, the bisacylphosphine sulfide can be isolated in pure form by distillation, recrystallization or chromatographic separation methods. It is very advantageous to carry out all the reactions described above with the exclusion of air in an inert gas atmosphere, for example, under nitrogen gas or argon. In addition, stirring the respective reaction mixture is advantageously appropriate. The invention likewise provides a process for the preparation of compounds of formula II, of the compounds of formula I as starting materials, by (1) the reaction of an acyl halide of formula IV II (IV) in which Ar- -c-x Ar is as defined above, and X is Cl or Br; with a dimetallised arylphosphine of formula V R6, R7, R8, R9 and Rio are as defined above; and Mi is Na, Li or K; in the molar ratio of approximately 1: 1; (2) the subsequent reaction of a product with an acyl halide of formula IVa or Y1-C-X IVa), in which Yx is as defined above; and X is as defined above; with the proviso that the acyl halide of formula IV is not identical with an acyl halide salt of formula IVa; in the molar ratio of approximately 1: 1; and, (3) if the compounds of formula II in which A is oxygen or sulfur are obtained, oxidation or subsequent sulfiding to the resulting phosphine compounds. In addition, the compounds of formula II can also be prepared by reacting the compound of formula I with phosgene, analogously to the description in "WA Henderson et al., J. Am. Chem. Soc. 1960, 82, 5794" or "GB 904 086"or in" Organic Phosphorous Compounds, Editors: R. M.

Kosolapoff and L. Maier, Wiley-Interscience 1972, Vol.l, page 28"or" Houben-Weil, Methoden der Organischen Chemie, Vol. Xll / 1, page 201", to give the corresponding phosphine chloride (li). The compounds of formula (Li) can, as described in "Organic Phosphorous Compounds, Editors: RM Kosolapoff and L. Maier, Wilei-Interscience 1972, Vol.4, pages 268-269", be reacted with alcohols to give compounds of the formula (lii), which are then treated directly with an acyl halide of the formula Iva, in analogy with the description of US 4324744 (by the reaction of Michaelis-Arbuzov), to give the compounds of formula II. In this case, the oxidation step is superfluous.

(I) (Ii) (Iii) (II) Ar and Yx are as defined in the claims 1 and 2, although Ar and Yx are not the same radical; X is Cl or Br; M and R6 are likewise as defined in the claim 1, and R is any alcohol radical, for example alkyl C? ~ C? 2, cycloalkyl of C5-Cs, for example cyclopentyl or cyclohexyl or benzyl. The compounds of formula (Lii) can be oxide using suitable oxidizing agents, such as peroxyacids, hydrogen peroxide or hydrogen peroxide / urea, to give the phosphinic esters corresponding (liii): (Üü) • This preparation process is novel. This invention provides a process for the preparation of the compounds of formula II in which A is oxygen and x 1, by 1) the reaction of the compounds of formula (I), (I [in which Ar, M, R & R7, Rs, R9, and Rio are as defined above, with phosgene to give the corresponding phosphine chloride (Ii) (2) Subsequent reaction with alcohol to give the compound of formula (Iii) (, -I.1-1 •)., In lia quali R is the radical of an alcohol, in particular C 1 -C 2 alkyl, C 5 -C 8 cycloalkyl or benzyl; and (3) the reaction of the resulting compound of formula (Iii) with an acyl halide O in which Y, -C-X Yx is as defined above, but is not identical to Ar of formula (I), and X is Cl or Br, to give the compound of formula II.

As already mentioned, monoacylphosphines, monoacylphosphine oxides or slightly non-symmetrical monoacylphosphine sulfides can also be obtained from the compounds of formula I. The invention thus also provides compounds of the formula III A is O u S; x is 0 or 1; Ar is a group Ar is cyclopentyl, cyclohexyl, naphthyl, biphenylyl, anthracyl, or a 5- or 6-membered heterocyclic ring containing "0, S, or N, wherein the cyclopentyl, cyclohexyl, naphthyl, biphenylyl, anthracyl, or heterocyclic ring containing 5 or 6 members contains O, S or N are unsubstituted or substituted by halogen, C? -C4 alkyl and / or C? -C4 alkoxy; Rx and R2 independently from each other are C?-C2o alkyl, OR ??, CF3 or halogen; R, R4 and R5 independently of each other are hydrogen, Ca-C2_ alkyl, OR ?? or halogen or in the case that two of the radicals R- ?, R2, R3, R4 and / or R5 together form an alkylene of C? ~ C2o which may be interrupted by 0, S or NR? _; Re, R7, R8, Rg and Rio independently of each other are hydrogen, C? -C20 alkyl; C2-C20 alkyl which is interrupted once or more than once by non-consecutive O atoms and is substituted or substituted by OH and / or SH; or Re, R7, R8, R9 and Rio are 0R ??; halogen or unsubstituted phenyl or phenyl substituted one or more times by C? -C4 alkyl; Rxx is hydrogen, C 1 -C 2 alkyl, C 2 -C 20 alkenyl, C 3 -C 8 cycloalkyl, phenyl, benzyl or C 2 -C 20 alkyl which is interrupted once or more than once by non-consecutive 0 atoms and which is or is not replaced by OH and / or SH; Zx is C? -C24 alkyl which is unsubstituted or substituted once or more than once by OR15, SR15, N (R? E) (R?), Phenyl, n A A O 1 1 | | has halogen, CN, NCO, - C- - CH2, - C- R18, - C- OR18 H _ and / or -C-N (R18) 2; or Zi is C2-C24 alkyl which is interrupted once or more than once by 0, S or R14 and that is or is not substituted by OR15, SR15, N (R? ß) (R17), phenyl, Halogen, -OR, and / or -C-N (R1ß) 2 Zi is C? -C24 alkoxy, which is substituted once or more ft once for phenyl, CN, NCO, - C - CH2, C - R18, A A. A A. II, II1 II II 'C-OR18 and / or C- N (R18) 2; or Z1 is C- OR ", C- N (R16) (R17), A A, II II1-C- OR11a or - C- N (R18a) (R18b); or Zi is C3-C24 cycloalkyl not substituted or C3-C24 cycloalkyl substituted by C? -C2o alkyl, ORn, CF3 or halogen; unsubstituted C2-C24 alkenyl or the C2-C24 alkenyl substituted by C6-C2 aryl, CN, (CO) OR? s or (CO) N (R? ß) 2; or Zx is C3-C24 cycloalkenyl or is C.sub.124 alkylthio, in which the alkyl radical is uninterrupted or interrupted once or more than once by non-consecutive O.sub.SO, and is unsubstituted or substituted by ORs, SR15 and / or halogen; Ax is 0, S or NR? 8a; Z2 is C? -C24 alkylene; C2-C24 alkylene interrupted once or more than once by 0, S, or NR14; C2-C24 alkenylene; C2-C24 alkenylene interrupted once or more than once by 0, S, or NR14; C3-C24 cycloalkylene; C3-C24 cycloalkylene interrupted once or more than once by 0, S, or NR14; C3-C24 cycloalkylene; C3-C24 cycloalkenylene interrupted once or more than once by 0, S, or NR14; wherein the alkylene radicals of C?-C24, C2-C24 alkylene, C2-C24 alkenylene, C3-C24 cycloalkylene and C3-C24 cycloalkenylene are unsubstituted or substituted by 0R ??, SRx, N (R12) (R 3) and / or halogen; or Z2 is or two or are substituted on the aromatic ring with C-C2o alkyl; C-C2o alkyl which is interrupted once or more than once by non-consecutive 0 atoms and which is or is not substituted by OH and / or SH; 0R? , SRxx, N (R12) (R13), phenyl, halogen, N02, CN, (CO) -0R18, (CO) -R18, (CO) -N (R18) 2, S02R24, Z3 is CH2, CHCH3 or C (CH3) 2; Z4 is S, O, CH2, C = 0, NR14 or a direct bond; Z5 is S, O, CH2, CHCH3, C (CH3) 2, C (CF3) 2, CO, SO, S02; Z6 and Z7 independently of each other are CH2, CHCH3 or C (CH3) 2; r is 0, 1 or 2; s is a number from 1 to 12; q is a number from 0 to 50; t and p are each a number from 0 to 20; E, G, G3 and G4 independently of each other are unsubstituted C? -C12 alkyl or C? -C? 2 alkyl substituted by halogen, or are unsubstituted phenyl or phenyl substituted by one or more C? Alkyl? C4; R? La is C? -C2alkyl or substituted one or more O at once by 0R15, halogen or - C-CH2; or it is C2-C20H alkyl interrupted once or more than once by atoms of 0 not consecutive and optionally substituted once or more than one O for OR15, halogen or - C-CH.; or is C2-C2o alkenyl or C3-C alkynyl?; or is C 3 -C 2 cycloalkyl substituted once or more than once by Ci-Ce alkyl or halogen; or is C6-C2 aryl optionally substituted once or more than once by halogen, N02, C? -C6 alkyl, ORn or C (0) OR? 8; or is C 7 -Ci 6 arylalkyl or C 8 -C 6 arylcycloalkyl; R 4 is hydrogen, phenyl, C 1 -C 12 alkoxy, C 1 -C 12 alkyl or C 2 -C 2 alkyl which is interrupted once or more than once by O 2 S and which is or is not substituted by OH and / or SH; Ris has one of the meanings given for Ru or A II II1 is a radical -C-R18, -C-OR18 or -C-N (R18) 2; Laughs and R17 independently of each other have one of the given meanings for R12 or are a radical r ñC-OR18 or IC.-N (R18) 2; R? 8 is hydrogen, C? -C2 alkyl, C2-C12 alkenyl, C-C8 cycloalkyl, phenyl, benzyl; C2-C20 alkyl which is interrupted once or more than once by O or S and which is or is not substituted by OH; Risa and Riß independently of one another are hydrogen, CI-C-alkyl Q which is substituted once or more than once by OR15, halogen, styryl, methylstyryl, O -N = C = A or -C-CH,; or are C2-C20 alkyl which is H 2 interrupted once or more than once by non-consecutive O atoms and which is optionally substituted once or more than once by OR15, halogen, styryl, methylstyryl or O -cAcH2; or are C2-C2 alkenyl; or they are cycloalkyl of H C5-C? 2 substituted by -N = C = A or -CH2-N = C = A and optionally additional once or more than once substituted by C1-C4 alkyl; or are C6-C2 aryl optionally substituted once or more than once by halogen, N02, C6-C6 alkyl, C2-C4 alkenyl, ORu, -N = C = A, -CH2-N = C = A or C (0) OR? 8; or are C 7 -C 6 arylalkyl; or both Rx8a and Risb groups together are C8-Ci6 arylcycloalkyl; or R? 8a and Riab ° Y3 is O, S, SO, S02, CH2, C (CH3) 2, CHCH3, C (CF3) 2, (CO), or a direct link; R19, R20 R21. R22 and R23 have one of the given meanings for R6 or are N02, CN, S02R24, OS02R24, CF3, CC13 or halogen; R 24 is C 1 -C 1 alkyl, C 1 -C 2 alkyl substituted with halogen, phenyl, or phenyl substituted by OR 15 and / or SRIS; with the condition of if Zi is a radical identical to the other aromatic radical on the phosphorus atom.

In the compounds of the formula III, the preferred meanings of the radicals R 1 R2, R, R 4, R 5, R 6, R 7, R 8, R 9 and Rio are analogous to those given above for the compounds of the formula I. The R? Preferred 9, R20, R2 ?, R22 and R23 were defined identically to the preferred Re, R7, R8, Rg and Rio in formula I. A in formula III is, in particular, oxygen and x is preferably 1. gives preference to the compounds of the formula III in which A is 0; and x is 1; Ri and R2 independently they are C? -C? 2 alkyl, C? -C? 2 alkoxy, CF3 or halogen; R, R 4 and R 5 independently of each other are hydrogen, C 1 -C 2 alkyl, C 1 -C 2 alkoxy or halogen; R6, R7, Rβ, Rg and R? O independently of each other are hydrogen, C1-C12 alkyl; C2-C2alkyl which is interrupted once or more than once by non-consecutive O atoms and which is or is not substituted by OH and / or SH; or R6, R7, Rs, R9 and Rio are OR11, SR11, N (R? 2) (R? 3), phenyl or halogen; R is C 1 -C 12 alkyl, C 3 -C 8 cycloalkyl, phenyl, benzyl or C 2 -C 2 alkyl which is interrupted once or more than once by non-consecutive O atoms and which is or is not substituted by OH and / or SH; R 12 and R 13 independently of one another are hydrogen, C 1 -C 4 alkyl, C 3 -C 6 cycloalkyl, phenyl, benzyl or C 2 -C 2 alkyl which is interrupted once or more than once by O u S and which is or is not replaced by OH and / or SH; or R12 and R13 together are piperidino, mofolino or piperazino; Zi is Ci-Cis alkyl which is unsubstituted or is monosubstituted or polysubstituted by OR15, SR15, N (R? E) (R17), phenyl, halogen, CN, NCO, - and / or - ÍCI-N (R18) 2; or Zx is C2-C18 alkyl which is interrupted once or more than once by O, S or NRi4 and which is or is not substituted by OR? 5, SR15, N (R? e) (R? 7), phenyl, halogen, N (R1188) / 2 ' Zi is C? -C? Alkoxy which is substituted once or more once for phenyl, CN, NCO, -, A.A.A.II.III.II.III.sub.1 C-0R18 and / or -C.M (R.sub.18) 2; or Zx is -C-0Rn? or -C-N (R1ß) (R17); or Zx is unsubstituted C3-C12 cycloalkyl or C3-C2 cycloalkyl substituted by C? -C20 alkyl, OR?, CF3 or halogen; unsubstituted C2-C12 alkenyl or C2-C12 alkenyl substituted by phenyl, naphthyl, biphenylyl; or is C3-C12 cycloalkenyl, or Zx is one of the radicals (f), (g), (h), (i), (k), (1), (m), (n), (o) , (p) (q) or (t); Z2 is alkylene of C? -C? 8; C2-C12 alkylene interrupted once or more than once by O, S, or NR14, C2-C2 alkenylene; Alkenylene of C2-C? interrupted once or more than once by O, S, or NR? 4; C3-C? 2 cycloalkylene; C3-C? 2 cycloalkylene interrupted once or more than once by O, S, or NR? 4; C3-C? 2 cycloalkylene; C3-C1 cycloalkenylene interrupted once or more than once by O, S, or NR? 4; wherein the alkylene radicals of C-Cis, C2-C12 alkylene, C2-C2 alkenylene, C3-C2 cycloalkylene and C3-C2 cycloalkenylene are unsubstituted or substituted by ORu, SRu, N (Ri2) (R? 3) and / or halogen; or Z2 is or substituted on the aromatic ring with C? -C? 2 alkyl; C2-C2alkyl which is interrupted once or more than once by non-consecutive 0 atoms and which is or is not substituted by OH and / or SH; ORn, SRn, N (Ri2) (R13), phenyl, halogen, N02, CN, (CO) -OR? 8, (CO) -R18, (CO) -N (R18) 2, S02R24, and / or CF3; or Z2 is a group (r); Z3 is CH2, CHCH3 or C (CH3) 2; Z4 is S, O, CH2, C = 0, R14 or a direct bond; Z5 is S, 0, CH2, CHCH3, C (CH3) 2, C (CF3) 2, CO, SO, S02; Z6 and Z7 independently of one another are CH2, CHCH3 or C (CH3) 2; r is 0, 1 or 2; s is a number from 1 to 12; q is a number from 0 to 50; t and p are in each case a number from 0 to 20; E, G, G3 and G4 independently of each other are C1-C12 alkyl, or are unsubstituted phenyl or phenyl substituted by one or more C? ~ C alkyl; R 4 is hydrogen, phenyl, C 1 -C 4 alkyl or C 1 -C 4 alkoxy, Rs has one of the meanings given for Ru or is a radical A A A1 II II II1 -C- R 18 'C- OR 18 -c- -N (R1 188)' 2 R 16 and R 17 independently of each other have one of the meanings A II dice for Ri2 are a radical -C-R 181 -C-OR18 or C-N (R18) 2; R18 is hydrogen, C?-C2 alkyl, alkenyl C2-C? 2, C-C8 cycloalkyl, phenyl, benzyl; C2-C20 alkyl which is interrupted once or more than once by 0 uS and which is or is not substituted by OH; R? 9, R20, R21, R22 and R23 have one of the meanings given for Rg or are N02, CN, S02R2, CF3, or halogen; R 24 is C 1 -C 2 alkyl, C 1 -C 2 alkyl substituted by halogen, phenyl, or phenyl substituted by OR 15 and / or SR 15. In the compounds of the formula III, Rβ, R7, R8, R9 and Rio are preferably hydrogen, C? ~C alquilo alkyl or Ci-Cß alkoxy or chloro, in particular hydrogen. R 12 and R 13 in the compounds of the formula III are preferably C 1 -C alkyl, C 1 -C 4 alkoxy or R 12 and R 13 together form a morpholino ring. Also of interest are the compounds of the formula III in which A is O; and x is 1; R 1 and R 2 independently of each other are C 1 -C 4 alkyl, C 1 -C 4 alkoxy, CF 3 or halogen; R3, R4 and R5 independently of one another are hydrogen, C? -C4 alkyl, C? -C4 alkoxy or chloro; R6, R7, R8, R9 and Rio independently of one another are hydrogen, C? -C8 alkoxy, C? -C6 alkyl; or R6, R7, R8, Rg and Rio are phenyl or halogen; R11 is Ci-Cs alkyl, cyclopentyl, cyclohexyl, phenyl, benzyl or C2-C6 alkyl which is interrupted once or twice by non-consecutive O atoms and which is or is not replaced by OH; Zi is C? -C? 2 alkyl which is unsubstituted or is mono- or polysubstituted by OR15, SR15, AO /? N (R? 6) (Ri7), phenyl, halogen, CN, NCO, -C - CH2 C R18, H A A1 C-OR18 and / or -C-N (R1S) 2; or Z2 is C2-C2 alkyl which is interrupted once or more than once by 0, S or NR? 4 and that is or is not replaced by 0R15, SRxs, N (R? 6) (R17), phenyl, halogen, C CH2, C II-R1ß, CII-0R18 and / or CII1- N (R18) 2; or H Zi is C1-C12 alkoxy which is mono- or polysubstituted by phenyl, CN, NCO, A -C-N (R18) 2; or Zi is -C-OR "or -piral-N (R16) (R17); or Zi is in each cyclopentyl or cyclohexyl case unsubstituted or substituted by halogen or C 1 -C 20 alkyl, OR-, CF 3 -; or Zi is C2-C alkenyl? unsubstituted C 2 -C 2 alkenyl substituted by phenyl, biphenylyl or naphthyl; or C5-C2 cycloalkenyl is or encompasses one of the radicals (f), (g), (h), (i), (k), (1), (m), (n), (or ), (p) (q) or (t); Z2 is alkylene of C? -C? 2; C2-C12 alkenyl interrupted once or more than once by 0; C2-C12 alkenylene; C2-C2 alkenylene interrupted once or more than once by 0; C5 ~ C8 cycloalkylene; C3-C5 cycloalkylene interrupted by O, S, or NRi4; C5-C8 cycloalkenylene; C3-C5 cycloalkenylene interrupted by 0, S, or NR14; wherein the alkylene radicals of C? -C12, C2-C12 alkylene, C2-C12 alkenylene, Cs-C8 cycloalkylene and C-C8 cycloalkenylene are unsubstituted or substituted by 0R ??; or Z2 is one of the ituidos or are substituted on the aromatic ring by C 1 -C 4 alkyl, OR n, phenyl, (CO) -ORia, (CO) -R m and / or (CO) -N (R 18) 2; or Z2 is a group (r); Z3 is CH2, CHCH3 or C (CH3) 2; Z4 is S, 0, CH2, C = 0, NR14 or a direct bond; Z5 is 0, CH2, CHCH3, C (CH3) 2, C (CF3) 2; Zg and Z7 independently of each other are CH2, CHCH3 or C (CH3) 2; r is 0, 1 or 2; s is a number from 1 to 12; q is a number from 0 to 50; t and p are in each case a number from 0 to 20; E, G, G3 and G4 independently of each other are C? -C? 2 alkyl, or are unsubstituted phenyl or phenyl substituted by one or more C? -C4 alkyl; R 14 is hydrogen, phenyl or C 1 -C 4 alkyl; R? 5 has one of the meanings given for Rxx or is an A A A, radical -C-R, -C-OR, or -C- (R1 8'2 R 16 and R 17 independently of each other have one of the meanings A A dice for R? 2 are a radical -C II -R -C II -OR, or A1 -C II1-N (R1B) 2; Ris is hydrogen, C 1 -C 24 alkyl, alkenyl 2-C1 ?, C3-C8 cycloalkyl, phenyl, benzyl, C2-C2alkyl which is interrupted once or more than once by 0uS and which is optionally substituted by OH; R? G, R2o, R21. R22 and R23 have one of the meanings given for Rs, or they are N02, CN, CF3 or halogen. Examples of compounds of formula III according to the invention are 2, 4,6-trimethylbenzoylphenylmethylphosphine oxide; oxide of. 2,4,6-trimethylbenzoylphenylethylphosphine; 2, 4, 6-trimethylbenzoylphenylpropylphosphine oxide; 2,4,6-trimethylbenzoylphenylbutylphosphine oxide; 2,4,6-trimethylbenzoylphenylpentylphosphine oxide; 2,4,6-trimethylbenzoylphenylhexylphosphine oxide; 2,4,6-trimethylbenzoylphenylheptylphosphine oxide; 2,4,6-trimethylbenzoylphenyloctylphosphine oxide; 2, 4, 6-trimethyl-benzoylphenyldodecylphosphine oxide; 2,4,6-trimethylbenzoylphenylisopropylphosphine oxide; 2,4,6-trimethylbenzoylphenyl isobutylphosphine oxide; 2,4,6-tri ethylbenzoylphenylamylphosphine oxide; 2,4,6-trimethylbenzoylphenyl-2-ethylhexylphosphine oxide; 2,4,6-tri-methylbenzoylphenyl-tert-butyl phosphine oxide; 2,4,6- oxide trimethylbenzoylphenyl-1-methylpropylphosphine; 2,4,6-tri-ethylbenzoylphenyl isopentylphosphine oxide; 2,4,6-tri-methylbenzoylphenylmethoxyethoxy phosphine oxide; 2,4,6-trimethylbenzoylphenylbenzylphosphine oxide; 2,4,6-trimethylbenzoylphenyl-2,4,4-trimethylpentylphosphine oxide; 2, 4, 6-trimethylbenzoylphenyl-2-propionic phosphine methyl ester oxide; Ethyl 2, 4, 6-trimethylbenzoylphenyl-2-propionic phosphine oxide; propyl ester oxide 2,4,6-trimethylbenzoylphenyl-2-propionic phosphine; butyl ester 2,4,6-trimethylbenzoylphenyl-2-propionic phosphine oxide; 2, 4, 6-trimethylbenzoylphenyl-2-? ropionic phosphine pentyl ester oxide; 2, 4, 6-trimethylbenzoylphenyl-2-propionic phosphine hexyl ester oxide; octyl ester 2,4,6-trimethylbenzoylphenyl-2-propionic phosphine; 2,4,6-trimethylbenzoylphenyl-2-propionic phosphine decyl ester oxide; 2, 4, 6-trimethylbenzoylphenyl-2-propionic phosphine dodecyl ester oxide; 2-, 4,6-trimethylbenzoylphenyl-2-propionic phosphine isopropyl ester oxide; 2-4,6-trimethylbenzoylphenyl-2-propionic phosphine isobutyl ester oxide; amyl ester oxide 2,4,6-tri-methylbenzoylphenyl-2-propionic phosphine; 2-ethylhexyl ester 2,4,6-trimethylbenzoylphenyl-2-propionic phosphine oxide; 2, 4, 6-trimethylbenzoylphenyl-2-propionic phosphine tert-butyl ester oxide; 1-methylpropyl ester 2,4,6-trimethylbenzoylphenyl-2-propionic phosphine oxide; isopentyl ester oxide 2,4,6-trimethylbenzoylphenyl-2-propionic phosphine; oxide of methoxyethoxy ester 2, 6-trimethylbenzoylphenyl-2-propionic phosphine; benzyl ester 2,4,6-trimethylbenzoylphenyl-2-propionic phosphine oxide; 2, 4, 4-trimethylpentyl ester 2,, 6-trimethylbenzoylphenyl-2-propionic phosphine oxide; 2, 4, 6-trimethylbenzoylphenylacetic acid phosphine methyl ester oxide; Ethyl 2, 4, 6-trimethylbenzoylphenylacetic acid phosphine oxide; propyl ester 2,4,6-trimethylbenzoylphenylacetic acid phosphine; butyl ester 2,4,6-trimethylbenzoylphenylacetic acid phosphine oxide; 2, 4, 6-trimethylbenzoylphenylacetic phosphine pentyl ester oxide; 2, 4, 6-trimethylbenzoylphenylacetic acid phosphine hexyl oxide; 2, 4, 6-trimethylbenzoylphenylacetic acid phosphine octyl ester oxide; 2, 4, 6-trimethylbenzoylphenylacetic phosphine decyl ester oxide; 2, 4, 6-trimethylbenzoylphenylacetic acid phosphide dodecyl ester oxide; ~ isopropyl ester 2,4,6-trimethylbenzoylphenylacetic acid phosphine; isobutyl ester 2, 6, trimethylbenzoylphenylacetic acid phosphine oxide; 2, 4, 6-trimethylbenzoylphenylacetic acid phosphine amyl ester oxide; 2-ethylhexyl ester 2,4,6-trimethylbenzoylphenylacetic acid phosphine oxide; 2, 4, 6-trimethylbenzoylphenylacetic acid phosphine tert-butyl ester oxide; 1-methylpropyl ester 2,4,6-trimethylbenzoylphenylacetic acid phosphine oxide; 2-, 4,6-trimethylbenzoylphenylacetic acid phosphine isopentyl ester oxide; 2, 4, 6-trimethylbenzoylphenylacetic acid phosphine methoxyethoxy oxide; 2, 4, 6-trimethylbenzoylphenylacetic benzyl ester oxide phosphine; 2, 4, 4-trimethylpentyl ester 2,4,6-trimethylbenzoylphenylacetic acid phosphine oxide; 2, 6-dimethylbenzoylphenylmethylphosphine oxide; 2, 6-dimethylbenzoyl-phenylethylphosphine oxide; 2,6-dimethylbenzoylphenylpropylphosphine oxide; 2,6-dimethyl-benzoylphenylbutylphosphine oxide; rust of 2,6-dimethylbenzoylphenylpentylphosphine; 2, 6-dimethylbenzoylphenylhexylphosphine oxide; 2,6-dimethylbenzoylphenylheptylphosphine oxide; 2, 6-dimethylbenzoylphenyloctylphosphine oxide; 2,6-dimethylbenzoylphenyldodecylphosphine oxide; 2,6-dimethylbenzoylphenylisopropylphosphine oxide; 2,6-dimethylbenzoylphenyl isobutylphosphine oxide; 2,6-dimethylbenzoylphenylamylphosphine oxide 2,6,6-dimethylbenzoylphenyl-2-ethylhexylphosphine oxide; 2,6-dimethylbenzoylphenyl-tert-butylphosphine oxide; 2,6-dimethylbenzoylphenyl-1-methylpropylphosphine oxide; 2,6-di-methylbenzoylphenyl-isopentylphosphine oxide; 2,6-dimethylbenzoylphenylmethoxyethoxyphosphine oxide; 2, 6-dimethylbenzoylphenylbenzylphosphine oxide; 2,6-dimethylbenzoylphenyl 2,4-trimethylpentylphosphine oxide; 2, 6-dimethylbenzoylphenyl-2-propionic phosphine methyl ester oxide; Ethyl 2, 6-dimethylbenzoylphenyl-2-propionic phosphine oxide; propyl ester 2,6-dimethylbenzoylphenyl-2-propionic phosphine oxide; 2-6-dimethylbenzoyl butyl ester oxide phenyl-2-propionic phosphine; 2,6-dimethylbenzoylphenyl-2-propionic phosphine pentyl ester oxide; hexyl ester -2,6-dimethylbenzoylphenyl-2-propionic phosphine oxide; octyl ester 2,6-dimethylbenzoylphenyl-2-propionic phosphine oxide; 2, 6-dimethylbenzoylphenyl-2-propionic phosphine decyl ester oxide; dodecyl ester oxide 2,6-dimethylbenzoylphenyl-2-propionic phosphine;. isopropyl ester oxide 2,6-dimethylbenzoylphenyl-2-propionic phosphine; isobutyl ester 2,6-dimethylbenzoylphenyl-2-propionic phosphine oxide; amyl ester oxide 2,6-dimethylbenzoylphenyl-2-propionic phosphine; 2-ethylhexyl ester 2,6-dimethylbenzoylphenyl-2-propionic phosphine oxide; tert-butyl ester oxide 2,6-dimethylbenzoylphenyl-2-propionic phosphine; 1-methylpropyl ester 2,6-dimethylbenzoylphenyl-2-propionic phosphine oxide; 2, 6-dimethylbenzoylphenyl-2-propionic oxide isopentyl ester phosphine; methoxyethoxy oxide 2,6-dimethylbenzoylphenyl-2-propionic phosphine ester; benzyl ester oxide 2,6-dimethylbenzoylphenyl-2-propionic phosphine; 2, 4, 4-trimethylpentyl ester 2,6-dimethylbenzoylphenyl-2-propionic phosphine oxide; 2, 6-dimethylbenzoyl-phenylacetic phosphine methyl ester oxide; ethyl ester oxide 2,6-dimethylbenzoylphenylacetic acid phosphine; propyl ester 2,6-dimethylbenzoylphenylacetic acid phosphine oxide; 2, 6-dimethylbenzoylphenylacetic acid butyl ester phosphine oxide; 2-6-dimethylbenzoylphenylacetic acid pentyl ester phosphine oxide; hexyl ester oxide 2,6-dimethylbenzoylphenylacetic acid phosphine; octyl ester 2,6-dimethylbenzoylphenylacetic acid phosphine oxide; 2,6-dimethylbenzoylphenylacetic phosphine decyl ester oxide; 2, 6-dimethylbenzoylphenylacetic phosphine dodecyl ester oxide; 2-6-dimethylbenzoylphenylacetic acid isopropyl ester phosphine oxide; 2-6-dimethylbenzoylphenylacetic acid isobutyl ester phosphine oxide; amyl ester oxide 2,6-dimethylbenzoylphenylacetic acid phosphine; 2-ethylhexyl ester 2,6-dimethylbenzoylphenylacetic acid phosphine oxide; tert-butyl ester oxide 2,6-di-ethylbenzoylphenylacetic acid phosphine; 1-methylpropyl ester 2,6-dimethylbenzoylphenylacetic acid phosphine oxide; isopentyl ester 2,6-dimethylbenzoylphenylacetic acid phosphine oxide; methoxyethoxy oxide 2,6-dimethylbenzoylphenylacetic acid phosphine; Benzyl Ester 2,6-dimethylbenzoylphenylacetic acid phosphine oxide; 2, 4, 4-trimethylpentyl ester 2,6-dimethylbenzoylphenylacetic acid phosphine oxide; 2, 6-dimethoxybenzoylphenylmethylphosphine oxide; 2,6-di-ethoxybenzoylphenylethylphosphine oxide; 2, 6-dimethoxy-benzoylphenylpropylphosphine oxide; 2, 6-dimethoxy-benzoylphenylbutylphosphine oxide; 2,6-dimethoxybenzoylphenylpentylphosphine oxide; oxide of 2,6-dimethoxybenzoylphenylhexylphosphine; 2,6-dimethoxybenzoylphenylheptylphosphine oxide; "2,6-dimethoxybenzoylphenyloctylphosphine oxide; 2,6-dimethoxy-benzoylphenyldodecylphosphine oxide; 2,6-di-di-oxide methoxybenzoylphenylisopropylphosphine; 2, 6-dimethoxybenzoylphenyl isobutylphosphine oxide; 2, 6-dimethoxy-benzoylphenylamphosphine oxide; 2, 6-dimethoxybenzoylphenyl-2-ethylhexylphosphine oxide; 2, 6-dimethoxybenzoylphenyl-tert-butylphosphine oxide; 2, 6-dimethoxybenzoylphenyl-1-methylpropylphosphine oxide; 2, 6-dimethoxybenzoylphenyl-isopentylphosphine oxide; 2, 6-dimethoxybenzoylphenyl-methoxyethoxyphosphine oxide; 2, 6-dimethoxybenzoylphenyl-benzylphosphine oxide; 2-6-dimethoxy-benzoyl-phenyl-2,4,4-tri-methylpentylphosphine oxide; Methyl ester 2,6-dimethoxybenzoylphenyl-2-propionic phosphine oxide; Ethyl 2, 6-dimethoxybenzoylphenyl-2-propionic phosphine oxide; propyl ester 2,6-dimethoxybenzoylphenyl-2-propionic phosphine oxide; 2-, 6-dimethoxybenzoylphenyl-2-propionic phosphine butyl ester oxide; 2, 6-dimethoxybenzoylphenyl-2-propionic phosphine pentyl ester oxide; hexyl ester 2,6-dimethoxybenzoylphenyl-2-propionic phosphine oxide; octyl ester 2,6-dimethoxybenzoylphenyl-2-propionic phosphine oxide; 2, 6-dimethoxybenzoylphenyl-2-propionic phosphine decyl ester oxide; 2, 6-dimethoxybenzoylphenyl-2-propionic phosphine dodecyl ester oxide; isopropyl ester 2,6-dimethoxybenzoylphenyl-2-propionic phosphine oxide; isobutyl ester oxide 2,6-dimethoxybenzoylphenyl-2-propionic phosphine; amyl ester oxide 2,6-dimethoxybenzoylphenyl-2-propionic phosphine; 2-ethylhexyl ester 2,6-dimethoxybenzoylphenyl-2-propionic oxide phosphine; tert-butyl ester oxide 2,6-dimethoxybenzoylphenyl-2-propionic phosphine; 1-methylpropyl ester 2,6-dimethoxybenzoylphenyl-2-propionic phosphine oxide; Isopentyl Ester 2,6-dimethoxybenzoylphenyl-2-propionic phosphine oxide; methoxyethoxy oxide 2,6-dimethoxybenzoylphenyl-2-propionic phosphine oxide; Benzyl Ester 2,6-dimethoxybenzoylphenyl-2-propionic phosphine oxide; 2, 4, 4-trimethylpentyl ester 2,6-dimethoxybenzoylphenyl-2-propionic phosphine oxide; Methyl ester 2, -dimethoxybenzoylphenylacetic acid phosphine oxide; Ethyl 2, 6-dimethoxybenzoylphenylacetic acid phosphine oxide; propyl ester 2,6-dimethoxybenzoylphenylacetic acid phosphine oxide; 2, 6-dimethoxybenzoylphenylacetic acid butyl ester phosphine oxide; 2, 6-dimethoxybenzoylphenylacetic acid pentyl ester phosphine oxide; hexyl ester 2,6-dimethoxybenzoylphenylacetic acid phosphine; octyl ester 2,6-dimethoxybenzoylphenylacetic acid phosphine oxide; 2, 6-dimethoxybenzoylphenylacetic phosphine decyl ester oxide; 2, 6-dimethoxybenzoylphenylacetic phosphine dodecyl ester oxide; 2-6-dimethoxybenzoyl-phenylacetic acid isopropyl ester phosphine oxide; 2-, 6-dimethoxy-benzoylphenylacetic phosphine isobutyl ester oxide; 2, 6-dimethoxybenzoylphenylacetic acid amyl ester phosphine oxide; 2-ethylhexyl ester 2,6-dimethoxybenzoylphenylacetic acid phosphine oxide; tert-butyl ester oxide. 2,6-dimethoxybenzoyl phenylacetic acid phosphine; 1-methylpropyl ester 2,6-dimethoxybenzoylphenylacetic acid phosphine oxide; "Isopentyl Ester 2,6-Dimethoxybenzoylphenylacetic Oxide" phosphine; methoxyethoxy oxide 2,6-dimethoxy-benzoylphenylacetic acid phosphine; benzyl ester 2,6-dimethoxybenzoylphenylacetic acid phosphine; 2,4,4-trimethylpentyl 2,6-dimethoxybenzoylphenylacetic acid phosphine oxide; 2, 6-bis (trifluoromethyl) benzoylphenylmethylphosphine oxide; 2, 6-bis (trifluoromethyl) enzoylphenylethylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoylphenylpropylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoylphenylbutylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoylphenylpentylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoylphenylhexylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoylphenylheptylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoylphenyloctylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoylphenyldodecylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoylphenylisopropylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoylphenyl isobutylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoylphenylamphosphine oxide; 2, 6-bis (trifluoromethyl) benzoylphenyl-2-ethylhexylphosphine oxide; 2, 6-bis (trifluoromethyl) -benzoylphenyl-tert-butylphosphine oxide; 2,6-bis (trifluoromethyl) benzoylphenyl-1-methylpropylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoylphenyl isopentylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoylphenylmethoxyethoxyphosphine oxide; 2, 6-bis (trifluoromethyl) benzoylphenylbenzylphosphine oxide; 2, 6-bis (trifluoromethyl) benzoylphenyl-2,4,4-trimethylpentylphosphine oxide; Methyl ester oxide 2, 6- bis (trifluoromethyl) benzoylphenyl-2-propionic phosphine; Ethyl ester 2,6-bis (trifluoromethyl) benzoylphenyl-2-propionic phosphine oxide; propyl ester oxide 2,6-bis (trifluoromethyl) benzoylphenyl-2-propionic phosphine; 2-6-bis (trifluoromethyl) benzoylphenyl-2-propionic phosphine butyl ester oxide; pentyl ester oxide 2,6-bis (trifluoromethyl) benzoylphenyl-2-propionic phosphine; hexyl phosphine ester of 2,6-bis (trifluoromethyl) -benzoylphenyl-2-propionic oxide 1; octyl ester 2,6-bis (trifluoromethyl) benzoylphenyl-2-propionic phosphine oxide; 2, 6-bis (trifluoromethyl) benzoylphenyl-2-propionic phosphine decyl ester oxide; dodecyl ester oxide 2,6-bis (trifluoromethyl) benzoylphenyl-2-propionic phosphine; isopropyl ester-2,6-bis (trifluoromethyl) benzoylphenyl-2-propionic phosphine oxide; isobutyl ester 2,6-bis (trifluoromethyl) -benzoylphenyl-2-propionic phosphine oxide; amyl ester oxide 2,6-bis (trifluoromethyl) benzoylphenyl-2-propionic phosphine; 2-ethylhexyl ester 2,6-bis (trifluoromethyl) benzoylphenyl-2-propionic phosphine oxide; tert-butyl ester oxide 2,6-bis (trifluoromethyl) benzoylphenyl-2-propionic phosphine; 1-methylpropyl ester 2,6-bis (trifluoromethyl) benzoylphenyl-2-propionic phosphine oxide; isopentyl ester oxide 2,6-bis (trifluoromethyl) benzoylphenyl-2-propionic phosphine; methoxyethoxy oxide 2,6-bis (trifluoromethyl) benzoylphenyl-2-propionic phosphine oxide; benzyl ester oxide 2,6- bis (trifluoromethyl) benzoylphenyl-2-propionic phosphine; 2, 4, 4-trimethylpentyl ester 2,6-bis (trifluoromethyl) -benzoylphenyl-2-propionic phosphine oxide; methyl ester 2,6-bis (trifluoromethyl) benzoylphenylacetic phosphine oxide; ethyl ester 2,6-bis (trifluoromethyl) benzoylphenylacetic acid phosphine oxide; propyl ester 2,6-bis (trifluoromethyl) benzoylphenylacetic acid phosphine oxide; butyl ester 2,6-bis (trifluoromethyl) benzoylphenylacetic phosphine oxide; pentyl ester 2,6-bis (trifluoromethyl) benzoylphenylacetic acid phosphine oxide; hexyl ester 2,6-bis (trifluoromethyl) benzoylphenylacetic phosphine oxide; octyl ester 2,6-bis (trifluoromethyl) benzoylphenylacetic acid phosphine oxide; 2, 6-bis (trifluoromethyl) benzoylphenylacetic phosphine decyl ester oxide; Phosphine ester of 2,6-bis (trifluoromethyl) benzoylphenylacetic dodecyl oxide; isopropyl ester 2,6-bis (trifluoromethyl) benzoylphenylacetic acid phosphine oxide; isobutyl ester 2,6-bis (trifluoromethyl) benzoylphenylacetic acid phosphine oxide; amyl ester 2,6-bis (trifluoromethyl) benzoylphenylacetic acid phosphine oxide; 2-ethylhexyl ester 2,6-bis (trifluoromethyl) benzoylphenylacetic acid phosphine oxide; tert-butyl ester oxide. 2,6-bis (trifluoromethyl) benzoylphenylacetic phosphma; 1-methylpropyl ester 2,6-bis (trifluoromethyl) benzoylphenylacetic acid phosphine oxide; 2-6-bis (trifluoromethyl) benzoylphenylacetic isopentyl ester oxide phosphine; methoxyethoxy oxide 2,6-bis (trifluoromethyl) -benzoylphenylacetic acid phosphine ester; benzyl ester 2,6-bis (trifluoromethyl) benzoylphenylacetic acid phosphine oxide; oxide of 2,4,6-trimethylpentyl ester 2,6-bis (trifluoromethyl) -benzoylphenylacetic acid phosphine; 2, 6-di-chlorobenzoylphenylmethylphosphine oxide; 2,6-dichlorobenzoylphenylethylphosphine oxide; 2,6-dichlorobenzoylphenylpropylphosphine oxide; 2,6-dichlorobenzoylphenylbutylphosphine oxide; 2, 6-dichlorobenzoyl-phenylpentylphosphine oxide; 2,6-dichlorobenzoylphenylhexylphosphine oxide; 2, 6-dichloro-benzoylphenylheptylphosphine oxide; 2,6-dichloro-benzoylphenyloctylphosphine oxide; 2, 6-dichlorobenzoyl-phenyldodecylphosphine oxide; 2, 6-dichlorobenzoylphenyl-isopropylphosphine oxide; 2, 6-dichlorobenzoylphenyl isobutylphosphine oxide; 2,6-dichlorobenzoylphenylamylphosphine oxide; 2,6-dichlorobenzoylphenyl-2-ethylhexylphosphine oxide; 2, 6-dichlorobenzoylphenyl-tert-butylphosphine oxide; 2,6-dichlorobenzoylphenyl-1-methylpropylphosphine oxide; 2,6-dichlorobenzoylphenyl isopentylphosphine oxide; 2,6-dichloro-benzoylphenylmethoxyethoxy phosphine oxide; 2,6-dichloro-benzoylphenylbenzylphosphine oxide; 2, 6-dichlorobenzoylphenyl-2,4,4-trimethylpentylphosphine oxide; 2,6-dichlorobenzoylphenyl-2-propionic phosphine methyl ester oxide; ethyl ester oxide 2,6-dichlorobenzoylphenyl-2-propionic phosphine; propyl ester oxide 2,6-dichlorobenzoylphenyl-2-propionic phosphine; 2, 6-dichlorobenzoylphenyl-2-propionic phosphine butyl ester oxide; 2, 6-dichlorobenzoylphenyl-2-propionic phosphine pentyl ester oxide; hexyl ester 2,6-dichlorobenzoylphenyl-2-propionic phosphine oxide; octyl ester 2,6-dichlorobenzoylphenyl-2-propionic phosphine oxide; 2, 6-dichlorobenzoylphenyl-2-propionic phosphine decyl ester oxide; dodecyl ester oxide 2,6-dichlorobenzoylphenyl-2-propionic phosphine; 2-6-dichlorobenzoylphenyl-2-propionic phosphine isopropyl ester oxide; Isobutyl ester oxide 2,6-dichlorobenzoylphenyl-2-propionic phosphine; amyl ester oxide 2,6-dichlorobenzoylphenyl-2-propionic phosphine; 2-ethylhexyl ester 2,6-dichlorobenzoylphenyl-2-propionic phosphine oxide; Tert-butyl ester oxide 2,6-dichlorobenzoylphenyl-2-propionic phosphine; 1-methylpropyl ester 2,6-dichlorobenzoyl-phenyl-2-propionic phosphine oxide; isopentyl ester oxide 2,6-dichlorobenzoylphenyl-2-propionic phosphine; methoxyethoxy oxide 2,6-dichlorobenzoylphenyl-2-propionic phosphine oxide; benzyl ester oxide 2,6-dichlorobenzoylphenyl-2-propionic phosphine; 2, 4, 4-trimethylpentyl ester 2,6-dichlorobenzoylphenyl-2-propionic phosphine oxide; methyl ester 2, -dichlorobenzoylphenylacetic acid phosphine; Ethyl 2, 6-dichlorobenzoylphenylacetic acid phosphine oxide; propyl ester 2,6-dichlorobenzoylphenylacetic acid phosphine oxide; butyl oxide 2, 6-dichlorobenzoylphenylacetic acid phosphine ester; 2, 6-dichlorobenzoylphenylacetic phosphine pentyl ester oxide; 2,6-dichlorobenzoylphenylacetic acid phosphine hexyl ester oxide; octyl ester 2,6-dichlorobenzoylphenylacetic acid phosphine oxide; 2, 6-dichlorobenzoylphenylacetic phosphine decyl ester oxide; dodecyl ester 2,6-dichlorobenzoylphenylacetic acid phosphine oxide; 2-6-dichlorobenzoylphenylacetic isopropyl ester oxide 1; isobutyl ester 2,6-dichlorobenzoylphenylacetic acid phosphine oxide; amyl ester oxide 2,6-dichlorobenzoylphenylacetic phosphine; 2-ethylhexyl ester 2,6-dichlorobenzoylphenylacetic acid phosphine oxide; 2, 6-dichlorobenzoylphenylacetic acid phosphine tert-butyl ester oxide; 1-methylpropyl ester 2,6-dichlorobenzoylphenylacetic acid phosphine oxide; Isopentyl Ester 2,6-dichlorobenzoylphenylacetic acid phosphine oxide; ethoxyethoxy oxide 2,6-dichlorobenzoylphenylacetic acid phosphine; Benzyl Ester 2,6-dichlorobenzoylphenylacetic acid phosphine oxide; 2, 4, 4-trimethylpentyl ester 2,6-dichlorobenzoylphenylacetic acid phosphine oxide; 2,3,4,6-tetramethylbenzoylphenylmethylphosphine oxide; 2, 3, 4, 6-tetra-methylbenzoylphenylethylphosphine oxide; 2,3,4,6-tetramethylbenzoylphenylpropylphosphine oxide; 2,3,4,6-tetramethylbenzoylphenylbutylphosphine oxide; 2, 3, 4, 6-tetra-ethylbenzoylphenylpentylphosphine oxide; 2,3,4,6-tetramethylbenzoylphenylhexylphosphine oxide; 2, 3, 4, 6-tetra-methylbenzoylphenylheptylphosphine oxide; oxide of 2, 3, 4, 6-tetra- methylbenzoylphenyloctylphosphine; 2,3,4,6-tetramethylbenzoylphenyldodecylphosphine oxide; 2,3,4,6-tetramethylbenzoylphenylisopropylphosphine oxide; 2, 3, 4, 6-tetramethylbenzoylphenyl isobutylphosphine oxide; 2, 3,, 6-tetramethylbenzoylphenylamphosphine oxide; 2,3,4,6-tetramethylbenzoylphenyl-2-ethylhexylphosphine oxide; 2,3,4,6-tetramethylbenzoylphenyl-tert-butyl phosphine oxide; 2,3,4,6-tetramethylbenzoylphenyl-1-methylpropylphosphine oxide; 2, 3, 4, 6-tetramethylbenzoylphenyl isopentylphosphine oxide; 2, 3, 6-tetramethylbenzoylphenyl-methoxyethoxyphosphine oxide; 2, 3, 4, 6-tetramethylbenzoylphenylbenzylphosphine oxide; 2,3,4,6-tetramethylbenzoylphenyl-2,4,4-trimethylpentylphosphine oxide; 2, 3, 4, 4,6-tetramethylbenzoylphenyl-2-propionic phosphine methyl ester oxide; Ethyl ester oxide 2,3,4,6-tetramethylbenzoylphenyl-2-propionic phosphine; propyl ester oxide 2, 3, 4, 6-tetramethylbenzoylphenyl-2-propionic phosphine; 2, 3,, 6-tetramethylbenzoylphenyl-2-propionic phosphine butyl ester oxide; pentyl ester oxide 2, 3, 4, 6-tetra-methylbenzoylphenyl-2-propionic phosphine; hexyl ester 2, 3, 6-tetramethylbenzoylphenyl-2-propionic phosphine oxide; octyl ester 2, 3, 4, 6-tetramethylbenzoylphenyl-2-propionic phosphine; decyl ester oxide 2, 3, 4, 6-tetramethylbenzoylphenyl-2-propionic phosphine; dodecyl ester oxide 2,3,4,6-tetramethylbenzoylphenyl-2-propionic phosphine; isopropyl ester oxide 2, 3, 4, 6-tetrametilbenzoilfenil-2-propiónico phosphine; isobutyl ester 2,3,4,6-tetramethylbenzoylphenyl-2-pro-ionic phosphine oxide; amyl ester oxide 2, 3, 4, 6-tetramethylbenzoylphenyl-2-propionic phosphine; 2-ethylhexyl ester 2, 3, 4, 6-tetramethylbenzoylphenyl-2-propionic phosphine oxide; tert-butyl ester oxide 2,3,4,6-tetramethylbenzoylphenyl-2-propionic phosphine; 1-methylpropyl ester 2, 3, .4,6-tetramethylbenzoylphenyl-2-propionic phosphine oxide; isopentyl ester oxide 2,3,4,6-tetraethylbenzoylphenyl 2-propionic phosphine; methoxyethoxy oxide 2, 3, 4, 6-tetramethylbenzoylphenyl-2-propionic phosphine; Benzyl Ester 2,3,4,6-tetramethylbenzoylphenyl-2-propionic phosphine oxide; 2,4,4-trimethylpentyl ester 2,3,4,6-tetramethylbenzoylphenyl-2-propionic phosphine oxide; 2, 3, 4, 4,6-tetramethylbenzoylphenylacetic acid methyl ester oxide; 2, 3, 6-tetramethylbenzoi? phenylacetic phosphine ethyl ester oxide; propyl ester oxide 2, 3, 4, 6-tetramethylbenzoylphenylacetic acid phosphine; 2, 3, 4, 4,6-tetramethylbenzoylphenylacetic acid phosphine butyl ester oxide; pentyl ester 2,3,4,6-tetramethylbenzoylphenylacetic acid phosphine oxide; hexyl ester 2, 3, 4, 6-tetramethylbenzoylphenylacetic acid phosphine; octyl ester 2, 3, 4, 6-tetramethylbenzoylphenylacetic acid phosphine; 2, 3, 4, 4,6-tetramethylbenzoylphenylacetic phosphine decyl ester oxide; dodecyl ester oxide 2, 3, 4, 6-tetramethylbenzoylphenylacetic acid phosphine; isopropyl ester oxide 2,3,4,6- tetramethylbenzoylphenylacetic phosphine; isobutyl ester 2, 3, 6-tetramethylbenzoylphenylacetic acid phosphine; amyl ester oxide 2, 3, 4, 6-tetramethylbenzoylphenylacetic acid phosphine; 2-ethylhexyl ester 2, 3, 4, 6, 6-tetramethyl-benzoylphenylacetic acid phosphine oxide; tert-butyl ester oxide 2, 3, 6-tetramethylbenzoylphenylacetic acid phosphine; 1-methylpropyl ester oxide. 2, 3, 4, 6-tetramethylbenzoylphenylacetic acid phosphine; isopenyl ester 2,3,4,6-tetramethylbenzoylphenylacetic acid phosphine oxide; methoxyethoxy oxide 2,2,4,4,6-tetramethylbenzoylphenylacetic acid phosphine; benzyl ester 2, 3, 4, 6-tetramethylbenzoylphenylacetic acid phosphine; 2,, -trimethylpentyl ester 2,3,4,6-tetramethylbenzoylphenylacetic acid phosphine oxide; 2,, 6-trimethoxybenzoylphenylmethylphosphine oxide; 2,4,6-trimethoxybenzoylphenylethylphosphine oxide; 2,4,6-trimethoxybenzoylphenylpropylphosphine oxide; 2, 4, 6-trimethoxy-benzoylphenylbutylphosphine oxide; 2,4,6-trimethoxybenzoylphenylpentylphosphine oxide; 2,4,6-trimethoxybenzoylphenylhexylphosphine oxide; 2,4,6-tri-ethoxybenzoylphenylheptylphosphine oxide; 2,4,6-trimethoxybenzoylphenyloctylphosphine oxide; 2, 4, 6-trimethoxy-benzoylphenyldodecylphosphine oxide; 2,4,6-trimethoxybenzoylphenylisopropylphosphine oxide; 2,4,6-trimethoxybenzoylphenyl isobutylphosphine oxide; 2,4,6-trimethoxybenzoylphenylamphosphine oxide; 2,4,6- oxide trimethoxybenzoylphenyl-2-ethylhexylphosphine; 2,4,6-trimethoxybenzoylphenyl-tert-butylphosphine oxide; 2,4,6-trimethoxybenzoylphenyl-1-methylpropylphosphine oxide; 2,4,6-trimethoxybenzoylphenyl-isopentylphosphine oxide; 2,4,6-trimethoxybenzoylphenylmethoxyethoxyphosphine oxide; 2,4,6-trimethoxybenzoylphenylbenzylphosphine oxide; 2,4,6-trimethoxybenzoylphenyl-2,4,4-trimethylpentylphosphine oxide; 2, 4, 6-trimethoxybenzoylphenyl-2-propionic phosphine methyl ester oxide; 2, 4, 6-trimethoxybenzoylphenyl-2-propionic phosphine ethyl ester oxide; propyl ester oxide 2,4,6-trimethoxybenzoylphenyl-2-propionic phosphine; butyl ester 2,4,6-trimethoxybenzoylphenyl-2-propionic phosphine oxide; 2, 4, 6-trimethoxybenzoylphenyl-2-propionic phosphine pentyl ester oxide; hexyl ester 2,, 6-trimethoxybenzoylphenyl-2-propionic phosphine oxide; octyl ester 2,4,6-trimethoxybenzoylphenyl-2-propionic phosphine; 2, 4,6-trimethoxy-benzoylphenyl-2-propionic phosphine decyl ester oxide; dodecyl ester oxide 2, 6-trimethoxybenzoylphenyl-2-propionic phosphine; isopropyl ester 2-, 6-trimethoxybenzoylphenyl-2-propionic phosphine oxide; isobutyl ester 2,, 6-trimethoxybenzoylphenyl-2-propionic phosphine oxide; amyl ester oxide 2,4,6-trimethoxybenzoylphenyl-2-propionic phosphine; 2-ethylhexyl ester 2,4,6-trimethoxybenzoylphenyl-2-propionic phosphine oxide; tert-butyl ester oxide 2,4,6-trimethoxybenzoylphenyl-2-propionic phosphine; oxide of 1- methylpropyl ester 2, 6-trimethoxybenzoylphenyl-2-propionic phosphine; Isopentyl Ester 2,, 6-trimethoxy-benzoylphenyl-2-propionic phosphine oxide; methoxyethoxy oxide 2-, 4,6-trimethoxybenzoylphenyl-2-propionic phosphine oxide; benzyl ester oxide 2, 6-trimethoxybenzoylphenyl-2-propionic phosphine; 2, 4, 4-trimethylpentyl ester 2,4,6-trimethoxybenzoylphenyl-2-? ropionic phosphine oxide; 2, 4, 6-trimethoxybenzoylphenylacetic acid phosphine methyl ester oxide; 2-4,6-trimethoxybenzoylphenylacetic acid ethyl ester oxide; propyl ester 2,4,6-trimethoxybenzoylphenylacetic acid phosphine; 2, 4, 6-trimethoxybenzoylphenylacetic acid butyl ester phosphine oxide; pentyl ester 2,4,6-trimethoxybenzoylphenylacetic acid phosphine oxide; hexyl ester 2,4,6-trimethoxybenzoyl phenylacetic acid phosphine; octyl ester 2,, 6-trimethoxybenzoylphenylacetic acid phosphine oxide; 2, 4, 6-trimethoxybenzoylphenylacetic phosphine decyl ester oxide; 2, 4, 6-trimethoxybenzoylphenylacetic phosphine dodecyl ester oxide; 2-, 4,6-trimethoxybenzoylphenylacetic phosphine isopropyl ester oxide; isobutyl ester 2,4,6-trimethoxybenzoylphenylacetic acid phosphine oxide; 2, 4, 6-trimethoxybenzoylphenylacetic acid amyl ester phosphine oxide; 2-ethylhexyl ester 2,4,6-trimethoxybenzoylphenylacetic acid phosphine oxide; 2, 4, 6-trimethoxybenzoylphenylacetic acid phosphine tert-butyl ester oxide; 1-methylpropyl ester 2,4,6-trimethoxybenzoylphenylacetic acid phosphine oxide; isopentyl oxide 2, 6, 6-trimethoxybenzoylphenylacetic acid phosphine ester; methoxyethoxy oxide 2,4,6-trimethoxybenzoyl phenylacetic acid phosphine ester; benzyl ester 2,, 6-trimethoxybenzoylphenylacetic acid phosphine oxide; 2, 4, 4-trimethylpentyl ester 2,4,6-trimethoxybenzoylphenylacetic acid phosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoylphenylmethylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoylphenylethylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoylphenylpropylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoylphenylbutylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoylphenylpentylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoylphenylhexylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoylphenylheptylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoylphenyloctylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoylphenyldodecylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoylphenylisopropylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoylphenyl isobutylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoylphenylamphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoylphenyl-2-ethylhexylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoylphenyl-tert-butylphosphine oxide; 2,6-dimethyl-4-tert-butyl-benzoylphenyl-1-methylpropylphosphine oxide; 2,6-dimethyl-4-tert-butylbenzoylphenyl isopentylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoylphenylmethoxyethoxyphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoylphenylbenzylphosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoylphenyl-2, 4-trimethylpentyl-phosphine oxide; 2, 6-dimethyl-4-ter-methyl ester oxide butylbenzoylphenyl-2-propionic phosphine; ethyl ester oxide 2,6-dimethyl-4-tert-butylbenzoylphenyl-2-propionic phosphine; propyl ester oxide 2,6-dimethyl-4-tert-butylbenzoylphenyl-2-propionic phosphine; butyl ester oxide 2,6-dimethyl-4-tert-butylbenzoylphenyl-2-propionic phosphine; pentyl ester oxide 2,6-dimethyl-4-tert-butylbenzoylphenyl-2-propionic phosphine; hexyl ester .2, 6-dimethyl-4-tert-butylbenzoylphenyl-2-propionic phosphine; octyl ester 2,6-dimethyl-4-tert-butylbenzoylphenyl-2-propionic phosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoylphenyl-2-propionic phosphine decyl ester oxide; dodecyl ester oxide 2,6-dimethyl-4-tert-butylbenzoylphenyl-2-propionic phosphine; isopropyl ester oxide 2,6-dimethyl-4-tert-butylbenzoylphenyl-2-propionic phosphine; Isobutyl ester oxide 2,6-dimethyl-4-tert-butylbenzoylphenyl-2-propionic phosphine; amyl ester oxide 2,6-dimethyl-4-tert-butylbenzoylphenyl-2-propionic phosphine; 2-ethylhexyl ester 2,6-dimethyl-4-tert-butylbenzoylphenyl-2-propionic phosphine oxide; tert-butyl ester oxide 2,6-dimethyl-4-tert-butylbenzoylphenyl-2-propionic phosphine; 1-methylpropyl ester 2,6-dimethyl-4-tert-butylbenzoylphenyl-2-propionic phosphine oxide; isopentyl ester oxide 2,6-dimethyl-4-tert-butylbenzoylphenyl-2-propionic phosphine; methoxyethoxy oxide 2,6-dimethyl-4-tert-butylbenzoylphenyl-2-propionic phosphine oxide; benzyl ester oxide 2,6-dimethyl-4-tert-butylbenzoylphenyl-2-propionic phosphine; 2,4,4- oxide trimethylpentyl ester 2,6-dimethyl-4-tert-butylbenzoylphenyl-2-propionic phosphine; 2, 6-dimethyl-4-tert-butylbenzoylphenylacetic acid phosphine methyl ester oxide; ethyl ester oxide 2,6-dimethyl-4-tert-butylbenzoylphenylacetic acid phosphine; propyl ester oxide 2,6-dimethyl-4-tert-butylbenzoylphenylacetic acid phosphine; butyl ester 2,6-dimethyl-4-tert-butylbenzoylphenylacetic acid phosphine; pentyl ester oxide 2,6-dimethyl-4-tert-butylbenzoylphenylacetic acid phosphine; hexyl ester 2,6-dimethyl-4-tert-butylbenzoylphenylacetic acid phosphine oxide; octyl ester 2,6-dimethyl-4-tert-butylbenzoylphenylacetic acid phosphine oxide; 2, 6-dimethyl-4-tert-butylbenzoylphenylacetic acid phosphine decyl ester oxide; 2, 6-dimethyl-4-tert-butylbenzoylphenylacetic phosphine dodecyl ester oxide; isopropyl ester oxide 2,6-dimethyl-4-tert-butylbenzoylphenylacetic acid phosphine; isobutyl ester 2,6-dimethyl-4-tert-butylbenzoylphenylacetic acid phosphine oxide; amyl ester oxide 2,6-dimethyl-4-tert-butylbenzoylphenylacetic acid phosphine; 2-ethylhexyl ester 2,6-dimethyl-4-tert-butyl-benzoylphenylacetic acid phosphine oxide; tert-butyl ester oxide 2,6-dimethyl-4-tert-butylbenzoylphenylacetic acid phosphine; 1-methylpropyl ester 2,6-dimethyl-4-tert-butylbenzoylphenylacetic acid phosphine oxide; isopentyl ester 2,6-dimethyl-4-tert-butylbenzoylphenylacetic acid phosphine; methoxyethoxy oxide 2,6-dimethyl-4-tert-butylbenzoylphenylacetic acid phosphine; benzyl ester 2,6-dimethyl-4-tert-butylbenzoylphenylacetic oxide phosphine; 2, 4, 4-trimethylpentyl 2,6-dimethyl-4-tert-butylbenzoylphenylacetic acid phosphine oxide; 2-chloro-6-methylbenzoylphenylmethylphosphine oxide; 2-chloro-6-methyl-benzoylphenylethylphosphine oxide; 2-chloro-6-methylbenzoylphenylpropylphosphine oxide; 2-chloro-6-methylbenzoylphenylbutylphosphine oxide; 2-chloro-6-methylbenzoylphenylpentylphosphine oxide; 2-chloro-6-methyl-benzoylphenylhexylphosphine oxide; 2-chloro-6-methyl-benzoylphenylheptylphosphine oxide; 2-chloro-6-methylbenzoylphenyloctylphosphine oxide; 2-chloro-6-ethylbenzoylphenyldodecylphosphine oxide; 2-chloro-6-methylbenzoylphenylisopropylphosphine oxide; 2-chloro-6-methyl-benzoylphenyl isobutylphosphine oxide; 2-chloro-6-methylbenzoylphenylamylphosphine oxide; 2-chloro-6-methylbenzoylphenyl-2-ethylhexylphosphine oxide; 2-chloro-6-methylbenzoylphenyl-tert-butylphosphine oxide; 2-chloro-6-methylbenzoylphenyl-1-methylpropylphosphine oxide; 2-chloro-6-methyl-benzoylphenyl isopentylphosphine oxide; 2-chloro-6-methylbenzoylphenylmethoxyethoxyphosphine oxide; 2-chloro-6-methylbenzoylphenyl-benzylphosphine oxide; 2-chloro-6-methyl-benzoylphenyl-2,4-trimethylpentylphosphine oxide; Methyl ester oxide 2-chloro-6-methylbenzoylphenyl-2-propionic phosphine; Ethyl ester oxide 2-chloro-6-methylbenzoylphenyl-2-propionic phosphine; propyl ester oxide 2-chloro-6-methylbenzoylphenyl-2-propionic phosphine; 2-chloro-6- butyl ester oxide methylbenzoylphenyl-2-propionic phosphine; pentyl ester oxide 2-chloro-6-methylbenzoylphenyl-2-propionic phosphine; hexyl ester oxide 2-chloro-6-methylbenzoylphenyl-2-propionic phosphine; octyl ester oxide 2-chloro-6-methylbenzoylphenyl-2-propionic phosphine; decyl ester oxide 2-chloro-6-methylbenzoylphenyl-2-propionic phosphine; 2-chloro-6-methylbenzoylphenyl-2-propyonic phosphine dodecyl ester oxide; isopropyl ester oxide 2-chloro-6-methylbenzoylphenyl-2-propionic phosphine; isobutyl ester oxide 2-chloro-6-methylbenzoylphenyl-2-propionic phosphine; amyl ester oxide 2-chloro-6-methylbenzoylphenyl-2-propionic phosphine; 2-ethylhexyl ester oxide 2-chloro-6-methylbenzoylphenyl-2-propionic phosphine; tert -butyl ester oxide 2-chloro-6-methylbenzoylphenyl-2-propionic phosphine; 1-methylpropyl ester oxide 2-chloro-6-methylbenzoylphenyl-2-propionic phosphine; isopentyl ester oxide 2-chloro-6-methylbenzoylphenyl-2-propionic phosphine; methoxyethoxy oxide 2-chloro-6-methylbenzoylphenyl-2-propionic phosphine oxide; benzyl ester oxide 2-chloro-6-methylbenzoylphenyl-2-propionic phosphine; 2, 4, 4-trimethylpentyl ester 2-chloro-6-methylbenzoylphenyl-2-propionic phosphine oxide; 2-chloro-6-methylbenzoylphenylacetic acid phosphine methyl ester oxide; ethyl ester 2-chloro-6-methylbenzoylphenylacetic acid phosphine oxide; propyl ester oxide 2-chloro-6-methylbenzoylphenylacetic acid phosphine; butyl ester oxide 2-chloro-6-methylbenzoylphenylacetic acid phosphine; pentyl ester oxide 2-chloro-6- methylbenzoylphenylacetic phosphine; 2-chloro-6-methylbenzoylphenylacetic acid hexyl ester phosphine oxide; octyl ester oxide 2-chloro-6-methylbenzoylphenylacetic acid phosphine; 2-chloro-6-methylbenzoylphenylacetic phosphine decyl ester oxide; 2-chloro-6-methylbenzoylphenylacetic phosphine dodecyl ester oxide; isopropyl ester oxide 2-chloro-6-methylbenzoylphenylacetic acid phosphine; oxide of. 2-chloro-6-methyl-benzoylphenylacetic isobutyl ester phosphine; amyl ester oxide 2-chloro-6-methylbenzoylphenylacetic phosphine; 2-ethylhexyl ester 2-chloro-6-methylbenzoylphenylacetic acid phosphine oxide; tert-butyl ester oxide 2-chloro-β-methylbenzoylphenylacetic acid phosphine; 1-methylpropyl ester oxide 2-chloro-6-methylbenzoylphenylacetic acid phosphine; isopentyl ester oxide 2-chloro-6-methylbenzoylphenylacetic acid phosphine; methoxyethoxy oxide 2-chloro-6-methylbenzoylphenylacetic acid phosphine ester; benzyl ester oxide 2-chloro-6-methylbenzoylphenylacetic acid phosphine; 2, 4, 4-trimethylpentyl ester 2-chloro-6-methylbenzoylphenylacetic acid phosphine oxide; 2-chloro-6-methoxy-benzoylphenylmethylphosphine oxide; 2-chloro-6-methoxybenzoylphenylethylphosphine oxide; 2-chloro-6-methoxybenzoylphenylpropylphosphine oxide; 2-chloro-6-methoxy-benzoylphenylbutylphosphine oxide; 2-chloro-6-methoxybenzoylphenylpentylphosphine oxide; 2-chloro-6-methoxybenzoylphenylhexylphosphine oxide; 2-chloro-6-methoxybenzoylphenylheptylphosphine oxide; 2-chloro-6- oxide methoxybenzoylphenyloctylphosphine; 2-chloro-6-methoxybenzoylphenyldodecylphosphine oxide; 2-chloro-6-methoxybenzoylphenylisopropylphosphine oxide; 2-chloro-6-methoxybenzoylphenyl isobutylphosphine oxide; 2-chloro-6-methoxybenzoylphenylamphosphine oxide; 2-chloro-6-methoxy-benzoyl-phenyl-2-ethylhexylphosphine oxide; 2-chloro-6-methoxybenzoylphenyl-tert-butylphosphine oxide; 2-chloro-6-methoxybenzoylphenyl-1-methylpropylphosphine oxide; 2-chloro-6-methoxybenzoylphenyl isopentylphosphine oxide; 2-chloro-6-methoxybenzoylphenylmethoxyethoxyphosphine oxide; 2-chloro-6-methoxybenzoylphenylbenzylphosphine oxide; 2-chloro-6-methoxy-benzoyl-phenyl-2,4,4-trimethylpentylphosphine oxide; Methyl ester oxide 2-chloro-6-methoxybenzoylphenyl-2-propionic phosphine; ethyl ester oxide 2-chloro-6-methoxybenzoylphenyl-2-propionic phosphine; propyl ester oxide 2-chloro-6-methoxybenzoylphenyl-2-propionic phosphine; butyl ester oxide 2-chloro-6-methoxybenzoylphenyl-2-propionic phosphine; pentyl ester oxide 2-chloro-6-methoxybenzoylphenyl-2-propionic phosphine; hexyl ester oxide 2-chloro-6-methoxybenzoylphenyl-2-propionic phosphine; octyl ester oxide 2-chloro-6-methoxybenzoylphenyl-2-propionic phosphine; decyl ester oxide 2-chloro-6-methoxybenzoylphenyl-2-propionic phosphine; dodecyl ester oxide 2-chloro-6-methoxybenzoylphenyl-2-propionic phosphine; isopropyl ester oxide 2-chloro-6-methoxybenzoylphenyl-2-propionic phosphma; isobutyl oxide 2-chloro-6-methoxybenzoylphenyl-2-propionic phosphine ester; amyl ester oxide 2-chloro-6-methoxybenzoylphenyl-2-propionic phosphine; 2-ethylhexyl ester oxide 2-chloro-6-methoxybenzoylphenyl-2-propionic phosphine; tert-butyl ester oxide 2-chloro-6-methoxybenzoylphenyl-2-propionic phosphine; 1-methylpropyl ester oxide 2-chloro-6-methoxybenzoylphenyl-2-propionic phosphine; isopentyl ester oxide 2-chloro-6-methoxybenzoylphenyl-2-propionic phosphine; methoxyethoxy oxide 2-chloro-6-methoxybenzoylphenyl-2-propionic phosphine oxide; benzyl ester oxide 2-chloro-6-methoxybenzoylphenyl-2-propionic phosphine; 2, 4, 4-trimethylpentyl ester 2-chloro-6-methoxybenzoylphenyl-2-propionic phosphine oxide; 2-chloro-6-methoxybenzoylphenylacetic acid phosphine methyl ester oxide; ethyl ester 2-chloro-6-methoxybenzoylphenylacetic acid phosphine oxide; propyl ester oxide 2-chloro-6-methoxy-benzoylphenylacetic phosphine; butyl ester oxide 2-chloro-6-methoxybenzoylphenylacetic acid phosphine; pentyl ester oxide 2-chloro-6-methoxybenzoylphenylacetic acid phosphine; hexyl ester oxide 2-chloro-6-methoxybenzoylphenylacetic acid phosphine; octyl ester oxide 2-chloro-6-methoxybenzoylphenylacetic acid phosphine; 2-chloro-6-methoxybenzoylphenylacetic phosphine decyl ester oxide; dodecyl ester oxide 2-chloro-6-methoxybenzoyl-phenylacetic phosphine; isopropyl ester oxide 2-chloro-6-methoxybenzoylphenylacetic acid phosphine; isobutyl ester oxide 2-chloro-6-methoxybenzoylphenylacetic acid phosphine; amil oxide 2-chloro-6-methoxybenzoylphenylacetic acid phosphine ester; 2-ethylhexyl ester 2-chloro-6-methoxybenzoylphenylacetic acid phosphine oxide; tert-butyl ester oxide 2-chloro-6-methoxybenzoylphenylacetic acid phosphine; 1-methylpropyl 1-ester 2-chloro-6-methoxybenzoylphenylacetic acid phosphine oxide; isopentyl ester oxide 2-chloro-6-methoxybenzoylphenylacetic acid phosphine; methoxyethoxy oxide 2-chloro-6-methoxybenzoylphenylacetic acid phosphine; benzyl ester oxide 2-chloro-6-methoxybenzoylphenylacetic acid phosphine; 2,4,4-trimethylpentyl ester 2-chloro-6-methoxybenzoylphenylacetic oxide. The compounds of the formula III were obtained by the reaction of a corresponding compound of the formula I with a compound Z? -X (VI), where a compound of the formula III was first prepared in which x = 0 ( III '): (I) (VI) (III ') Ar, M, X, and R6-R? O are as defined above and in the claims. Zx is as defined in claim 3, with the exception of groups (v), (w) and C 1 -C 24 alkylthio. (The preparation of the compounds in which Zi is a group (v) or (w) or alkylthio of C? -C2 is described below). If the compounds of the formula III where A = O or S are to be prepared, then an oxidation or sulfurization of the compound of the formula (III ') is carried out, either after the compounds of the formula (III') ) have been separated by the usual methods, or without the isolation of the same. The conditions for such reactions are analogous to those described for the preparation of the compounds of the formula II. If a compound of the formula (III) is desired in which Zi is a radical (v) or (w), or in which Zx is C 1 -C 24 alkylthio, then the compound of the formula (I) is reacting with a compound of the formula Z? -S02-X, where, without an intermediate step, a compound of the formula (III) is obtained directly where A = 0 and x = 1. (Zi is as defined above, X is as defined in the claims). Therefore, it is unnecessary to carry out the oxidation step. Similar reactions are described, for example, in Houben-Weilo, E2, Methoden der Oganoschen Chemie, 4th edition, pages 222-225. If the compounds of the formula (III) in which Zi is a radical (v) or () or alkylthio of C? -C2 and in which A is sulfur are to be prepared, then, for example, it is possible to convert the corresponding oxide compound as described above to a sulfide. This is possible, for example, by reacting the corresponding phosphine oxide with an excess of P2Ss or elemental sulfur in a high-boiling solvent. Such reactions, ie, reactions in which a P = 0 bond is converted to a P = S bond, are described, for example, in L. Honer et al., Chem. Ber. 92, 2088 (1959) and US 2642461. In principle it is also possible to first reduce the corresponding phosphine oxide compound to give the respective phosphine and then sulfur the phosphine. That is, the P = 0 bond is reduced to give the phosphine using a suitable reducing agent, and then it is sulfided with elemental sulfur to give the P = S bond. Reducing agents that can be used are, for example, LiAlH4, Ca (AlH4) 2, CaH2 A1H3, SiHCl3, PhSiH3 and the agent as described in "Organic Phosphorous Compounds, Wiley-Interscience 1972, Vol. 1, pages 45- 46 and Vol.3, pages 408-413". The compounds of formula III, wherein A is NR18a, are prepared for example by reacting the compounds of formula I with carbodiimides: The invention provides a process for the preparation of the compounds of the formula III from novel starting materials of the formula I, (1) by the reaction of an acyl halide of the formula IV A U? (IV), in which Ar is as defined above, and X is Cl or Br; with a dimetallized arylphosphine of the formula V Re, R7, Ra, R9 and Rio are as defined above; and Mi is Na, Li or K; in the molar ratio of approximately 1: 1; (2) the subsequent reaction of the product with a compound of the formula VI Zi-X (VI), in which Zi is as defined above, with the exception of groups (v), (w) and alkylthio of C? ~ C24; and X is as defined above; with the proviso that, if Zx is a radical they are not identical to the radical in the molar ratio of approximately 1: 1; and, (3) whether the compounds of the formula III in which A is oxygen or sulfur are to be obtained, by the subsequent oxidation or sulphidation of the resulting phosphine compounds. The compounds of the formula III in which Z is C2-C2 alkyl can, in addition, be obtained by (1) the reaction of an acyl halide of the formula IV or? Q, (IV), in which Ar is as defined above, and X is Cl or Br; with an asymmetric phosphine of formula VII Re, R7, R8, R9 and Rio are as defined above, and Zi 'is C? -C2 alkyl; in the molar ratio of approximately 1: 1, in the presence of a base, to give the corresponding acylphosphine; and (2) the subsequent oxidation or sulphidation of the acylphosphine thus obtained. This preparation process is novel and similarly provided by the invention. Suitable bases for this process are, for example, organolithium compounds, such as butyllithium, or organic nitrogenous bases, for example tertiary amines or pyridine. In addition, the compounds of the formula III can be prepared by reacting the compound of the formula I with phosgene, in a manner analogous to the description of "WA Henderson et al., J. Am. Chem. Soc. 1960, 82, 5794" or "GB 904 086" or in "Oganic Phosphorous Compounds, Editors: RM Kosolapoff and L Maier, Wiley-Interscience 1972, Vol.l, page 28"or" Houben-Weyl, Methoden der Oganoschen Chemie, Vol. Xll / 1, page 201"to give the corresponding phosphine chloride (li). . The compounds of the formula (li) can, as described in "Organic Phosphorous Compounds, Editors: RM Kosolapoff and L. Maier, Wiley-Interscience 1972, Vol.4, pages 268-269", be reacted with alcohols to give the compounds of the formula (lii), which are then reacted directly with an organohalide of the formula VI, analogously to "K. Sasse in Houben-Weyl, Methoden der Oganoschen Chemie, Vol Xll / 1, page 433" ( by the reaction of Michaeles-Arbuzov), to give the compounds of formula III. In that case, the step of oxidation or sulfur is superfluous.

(I) (Ii) (Iii) (III) Ar is as described in claim 1 and Zx is as described in claim 3; X is Cl or Br; Rg and M are likewise defined as in claim 1, and R is any alcohol radical, for example C alquilo-C12 alkyl / Cs-C8 cycloalkyl, for example cyclopentyl or cyclohexyl, or benzyl. The compounds of the formula (Lii) can be oxidized using suitable oxidizing agents, such as peroxy acids, hydrogen peroxide or hydrogen peroxide / urea to give the corresponding phosphinic esters (Liii): OO Ar-1C1-P "-OR i111i1-i '. The invention thus also provides a process for the preparation of compounds of formula III in which A is oxygen and x is 1, by (1) the reaction of a compound of the formula (I), according to claim 1 Ar, M, Rβ, R, Rβ, Rg and R ?o are as defined above, with phosgene _ to give the corresponding phosphine chloride (Ii) (2) the subsequent reaction with an alcohol to give the compound of the formula (Iii) R is the radical of an alcohol; and (3) the reaction of the resulting compound of the formula (Iii) with an organohalide Z? -X, wherein x is as defined above, but is not identical to Ar of the formula (I), and X is. Cl or Br, to give the compound of formula III. It is also conceivable to obtain the compounds of the formula III according to the invention by another method. For example, the processes described in US 4298738 or US 4324744 could be used. The invention is provided for the use of compounds of the formula I as starting materials for the preparation of mono- or bisacylphosphines, mono- or bisacylphosphine oxides or mono- or bisacylphosphine sulfides. Also preferred are the compounds of the formulas I, II and III, in which Ar is a group R x and R 2 independently of each other are C 1 -C 4 alkyl, C 1 -C 4 alkoxy or halogen; R3, R and Rs independently of each other are hydrogen or C? -C4 alkyl; R6, R7, Rβ, R9 and Rio are hydrogen, C? -C4 alkyl, OR? or phenyl; R n is C 2 -C 4 alkyl, alkenyl or C 2 -C 8 benzyl; M is hydrogen or Li; A is O or S; x is 1; Yx is C? -C4 alkyl which is or is not substituted by one or more of phenyl; or Yx is naphthyl, anthracyl, OR ??, N (R ?6) (R17), 0Rhia, N (R18a) (R18b), Y 2 is substituted phenylene or phenylene substituted from one to four v. By C? -C alkyl; Ri 'and R2' independently of each other have the same meanings given for Ri and R2; and R3 ', R' and R5 'independently of each other have the meanings given for R3, R4 and R5; with the condition of if Yi is a naphthyl radical anthracyl, this is not identical to the other benzoyl group on the phosphorus atom; Zx is C? -C12 alkyl; C 1 -C 4 alkyl which A is substituted by phenyl, halogen or C II -OR 18; or Zx is unsubstituted C2-C8 alkenyl or C2-C8 alkenyl substituted by C6-C12 aryl, CN, (CO) OR? 5 or (CO) N (R? 8) 2 or is or with the condition of IF it is a radical and it is not identical to the other radical aromá on the phosphorus atom; Z3 is CH2; Z4 is S; r is 0; s is a number from 1 to 4; q is a number from 0 to 4; E, G, G3 and G4 independently of each other are unsubstituted C?-C4 alkyl or are C?-C4 alkyl is substituted by chloro; Rna is C? -C? Alkyl, substituted by OR15, O halogen or -C-CH2; or is C2-C6 alkenyl, cycloalkyl of C3-C6 H or arylalkyl of C-C2; or is C 1 -C 12 aryl optionally substituted once or more than once is substituted by C 1 -C 4 alkyl; R15 is C? -C8 alkyl or (CO) R18; Ri6 and R17 independently of one another are hydrogen, C?-C8 alkyl; C2-C3 alkenyl, C3-C6 cycloalkyl, phenyl or benzyl; or R17 and R17 together are C3-C5 alkylene optionally interrupted by 0, S or NR? 8; R18 is C?-C8 alkyl or Ci-Cβ alkenyl, "Risa and Ris independently of each other are alkyl O of CI ~ CQ, substituted by OR15, halogen, -N = C = A or - C-CH2; they are C2-C8 alkenyl, or they are C_-C? 2 cycloalkyl substituted by -N = C = A or -CH2-N = C = A and optionally additionally once or more than once is substituted by methyl; or are C 6 -C 0 aryl optionally substituted by C 1 -C 4 alkyl and / or -N = C = A, or are C 7 -C 2 arylalkyl, R 19, R 20, R 21 R 22 and R 23 are hydrogen, CF 3 , CC13 or halogen. Of equal interest are the compounds of the formulas I, II and III in which Ri and R2 independently of each other are methyl, methoxy or chloro; R3, R4 and R5 independently of each other are hydrogen or methyl; R6, R7, R8, Rg and Rio are hydrogen; M is Li; A is 0; x is 1; is C? -C4 alkyl; or Yi is one of the radicals Y2 is phenylene; Ri 'and R2' independently of each other have the same meanings as were given for Rx and R2; and R3 ', R4' and Rs' independently of one another have the same meanings as were given for R3, R4 and R5; with the condition of if Yi is a radical this is not identical to the other benzoyl group on the phosphorus atom; Zi is C? -C? 2 alkyl; C? ~ C4 alkyl which A is substituted by -C II -OR18 or Zx is one of the radicals Z3 is CH2; Z is S; r is 0; s is a number from 1 to 4; q is 0; E, G, G3 and G4 independently of one another are C? -C 4 alkyl unsubstituted or substituted by chloro; R18 is C? -C8 alkyl; Rig, R20, R2 ?, R22 and R23 are hydrogen, CF3, CC13 or halogen. According to the invention, the compounds of the formulas II and III can be used as photoinitiators for the photopolymerization of ethylenically unsaturated compounds or mixtures comprising such compounds. This use can also take place in combination with another photoinitiator and / or other additives.

The invention is thus also related to photopolymerizable compositions comprising (a) at least one ethylenically unsaturated light-curing compound and (b) as a photo-initiator., at least one compound of formula II and / or III, wherein the composition,. in addition to a component (b), it may also comprise other photoinitiators (c) and / or other additives (d). Preference is given to using those compositions of the compounds of formula II or III in which x is 1, particularly those compounds in which x is 1 and A is oxygen. The unsaturated compounds may contain one or more olefinic double bonds. They can also be low molecular weight (monomeric) or relatively high molecular weight (oligomeric). Examples of monomers with a double bond are alkyl or hydroxyalkyl acrylates or methacrylates, for example methyl acrylate, ethyl acrylate, butyl acrylate, 2-ethylhexyl acrylate or 2-hydroxyethyl acrylate, isobornyl acrylate, methyl methacrylate. or ethyl methacrylate. Also of interest are resins modified with silicone or fluorine, for example silicon acrylates. Additional examples are acrylonitrile, acrylamide, methacrylamide, N-substituted (meth) acrylamides, vinyl esters, such as vinyl acetate, vinyl ethers, such as isobutyl vinyl ether, styrene, alkyl and haloestyrenes, N-vinylpyrrolidone, vinyl chloride or vinylidene chloride. Examples of monomers having two or more double bonds are ethylene glycol diacrylate, propylene glycol diacrylate, neopentyl glycol diacrylate, hexamethylene glycol diacrylate or bisphenol A diacrylate, 4,4'-bis (2-acryloyloxyethoxy) diphenylpropane , trimethylolpropane triacrylate, triacrylate or pentaerythritol tetraacrylate, vinyl acrylate, divinylbenzene, divinyl succinate, diallyl phthalate, triallyl phosphate, triallyl isocyanurate or tris (2-acryloylethyl) isocyanurate. Examples of high molecular weight polyunsaturated (oligomeric) compounds are acrylated epoxy resins, polyurethanes, polyethers and polyesters which are acrylated or contain vinyl ether or epoxy groups. Additional examples of unsaturated oligomers are unsaturated polyester resins which are prepared primarily from maleic acid, phthalic acid and one or more diols and have molecular weights of about 500 to 3,000. In addition, it is also possible to use monomers and oligomers of vinyl ether, and oligomers terminated in maleate having polyester, polyurethane, polyether, polyvinyl ether and epoxy backbones. In particular, combinations of oligomers which may contain vinyl ether groups and polymers as described in WO 90/01512 are highly suitable. However, vinyl ether copolymers and monomers functionalized with maleic acid are also suitable. Such unsaturated oligomers are also referred to as prepolymers. Examples of particularly suitable compounds are esters of ethylenically unsaturated carboxylic acids and polyols or polyepoxides, and polymers containing ethylenically unsaturated groups in the chain or in the side groups, for example polyesters, polyamides and unsaturated polyurethanes and copolymers thereof, alkyd resins , copolymers of polybutadiene and butadiene, copolymers of polyisoprene and isoprene, polymers and copolymers containing (meth) acrylic groups in the side chains, and mixtures of one or more such polymers. Examples of unsaturated carboxylic acids are acrylic acid, methacrylic acid, crotonic acid, itaconic acid, cinnamic acid, unsaturated fatty acids such as linolenic acid or oleic acid. Preference is given to acrylic acid and methacrylic acid. Suitable aromatic polyols and, in particular, aliphatic and cycloaliphatic polyols. Examples of aromatic polyols are hydroquinone, 4,4'-dihydroxydiphenyl, 2,2-di (4-hydroxyphenyl) propane, and also novolaks and resoles. Examples of polyepoxides are those based on such polyols, particularly aromatic polyols and epichlorohydrins. In addition, polymers and copolymers containing hydroxyl groups in the polymer chain or in the side groups, for example polyvinyl alcohol and copolymers thereof or hydroxyalkyl polymethacrylates or copolymers thereof, are also suitable as polyols. Additional suitable polyols are oligoesters containing hydroxyl end groups. Examples of aliphatic and cycloaliphatic polyols are alkylene diols having, preferably, 2 to 12 carbon atoms, such as ethylene glycol, 1,2- or 1,3-propanediol, 1,2-, 1,3- or 1,4-butanediol, pentanediol, hexanediol, octanediol, dodecanediol, diethylene glycol, triethylene glycol, polyethylene glycols having high molecular weights, preferably 200 to 1,500, 1,3-cyclopentanediol, 1,2-, 1,3 or 1, 4-cyclohexanediol, 1,4-dihydroxymethylcyclohexane, glycerol, tris (β-hydroxyethyl) amine, trimethylolethane, trimethylolpropane, pentaerythritol, dipentaerythritol and sorbitol. The polyols can be partially or completely esterified using one or more unsaturated carboxylic acids, where the free hydroxyl groups in the partially modified esters, for example etherified or esterified with other carboxylic acids.

Examples of esters are: trimethylolpropane triacrylate, trimethylolethane triacrylate, trimethylolpropane trimethacrylate, trimethylolethane trimethacrylate, tetramethylene glycol dimethacrylate, triethylene glycol dimethacrylate, tetraethylene glycol diacrylate, pentaerythritol diacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, diacrylate dipentaerythritol triacrylate, dipentaerythritol tetraacrylate, dipentaerythritol pentaacrylate, dipentaerythritol hexaacrylate, dipentaerythritol octaacrylate tripentaerythritol, pentaerythritol dimethacrylate, pentaerythritol trimethacrylate, dimethacrylate, dipentaerythritol tetramethacrylate, dipentaerythritol octamethacrylate tripentaerythritol, pentaerythritol diitaconate, dipentaerythritol trisitaconate, dipentaerythritol , dipentaerythritol pentaitaconate, dipentaerythritol hexaitaconate, ethylene glycol diacrylate, 1,3-butanediol diacrylate, 1,3-butanediol dimethacrylate, diitaconate 1, 4 butanediol, sorbitol triacrylate, sorbitol tetraacrylate, pentaerythritol triacrylate, sorbitol tetramethacrylate, sorbitol pentaacrylates, sorbitol hexaacrylate, oligoester acrylates and methacrylates, glycerol di- and triacrylate, 1,4-cyclohexanediacrylate, bisacrylates and polyethylene bismetacrylates glycol having molecular weights of 200 to 1,500, or mixtures thereof. Also suitable as components (a) are amides of unsaturated carboxylic acids identical or different from aromatic, cycloaliphatic and aliphatic polyamines preferably having from 2 to 6, particularly from 2 to. , amino groups. Examples of such polyamines are ethylenediamine, 1,2- or 1,3-propylenediamine, 1,2-, 1,3- or 1,4-butylenediarrtin, 1,5-pentylenediamine, 1,6-hexylenediamine, octylenediamine, dodecylenediamine, 1,4-diaminocyclohexane, isophorone diamine, phenylenediamine, bisphenylenediamine, di-β-aminoethyl ether, diethylene triamine, triethylene tetramine, di (β-aminoethoxy) ethane or di (β-amino-propoxy) ethane. Additional suitable polyamines are polymers and copolymers with or without additional amino groups in the side chain and oligoamides containing amino end groups. Examples of such unsaturated amides are: methylenebisacrylamide, 1,6-hexamethylenebisacrylamide, diethylenetriaminetrismethacrylamide, bis (methacrylamido-propoxy) ethane, β-methacrylamidoethyl methacrylate, N [(β-hydroxyethoxy) ethyl] acrylamide. Suitable polyesters and unsaturated polyamides are derived, for example, from maleic acid and diols or diamines. Some of the maleic acid can be replaced by other dicarboxylic acids. They can be used together with ethylenically unsaturated comonomers, for example styrene. Polyesters and polyamides can also be derived from dicarboxylic acids and ethylenically unsaturated diols or diamines, particularly from relatively long chain compounds, which contain, for example, 6-20 carbon atoms. Examples of polyurethanes are those formed from saturated or unsaturated diisocyanates and unsaturated or saturated diols. The polybutadiene and polyisoprene and the copolymers thereof are known. Suitable comonomers are, for example, olefins, such as ethylene, propene, butene, hexene, (meth) acrylates, acrylonitrile, styrene or vinyl chloride. Polymers containing (meth) acrylate groups in the side chain are also known. These may, for example, be products of the reaction of epoxy resins based on novolak with (meth) acrylic acid, homo- or copolymers of vinyl alcohol or hydroxyalkyl derivatives thereof which have been esterified using (meth) acrylic acid, or homo- and copolymers of (meth) acrylates that have been esterified using hydroxyalkyl (meth) acrylates. The photopolymerizable compounds can be used by themselves or in any desired mixture. Preference is given to using mixtures of polyol (meth) acrylates.

It is also possible to add binders to the composition according to the invention; this is particularly advantageous if the photopolymerizable compounds are liquid or viscous substances. The amount of binder can, for example, be 5-95% by weight, preferably 10-90% by weight and particularly 40-90% by weight, based on total solids. The binder is chosen depending on the field of application and the properties required thereby, such as the ease to develop in aqueous or organic solvent systems, adhesion to substrates and sensitivity to oxygen. Examples of suitable binders are polymers having a molecular weight of about 5,000-2,000,000, preferably 10,000-1,000,000. Examples are: homo- and copolymeric acrylates and methacrylates, for example copolymers of methyl methacrylate / ethyl acrylate / methacrylic acid, poly (alkyl methacrylates), poly (alkyl acrylates); cellulose esters and cellulose ethers, such as cellulose acetate, cellulose acetate butyrate, methyl cellulose, ethyl cellulose; polyvinyl butyral, polyvinyl formal, cyclized rubber, polyethers, such as polyethylene oxide, polypropylene oxide, polytetrahydrofuran; polystyrene, polycarbonate, polyurethane, chlorinated polyolefins, chloride polyvinyl, copolymers of vinyl chloride / vinylidene chloride, copolymers of vinylidene chloride with acrylonitrile, methyl methacrylate and vinyl acetate, polyvinyl acetate, copoly (ethylene / vinyl acetate), polymers such as polycaprolactams and poly (hexamethylene adipamide) ), and polyesters such as poly (ethylene glycol terephthalate) and poly (hexamethylene glycol succinate). The unsaturated compounds can also be used with non-photopolymerizable foamed film forming components. These may be, for example, physically drying polymers or solutions thereof in organic solvents, for example nitrocellulose or cellulose acetobutyrate. However, they can also be chemically or thermally curable resins, for example polyisocyanates, polyepoxides or melamine resins. The use of thermally curable resins is of importance for the use of the so-called hybrid systems, which are photopolymerized in a first stage and are crosslinked by the subsequent heat treatment in a second stage.The photoinitiators according to the invention are also suitable as initiators for curing systems that dry oxidatively, as described, for example, in Lehrbuch der Lackue und Bischichtungen Volume III, 296-328, Verlag W.A. Colomb in Heenemann GmbH, Berlin-Oberschwandof (1976). In addition to the photoinitiator, the photopolymerizable mixtures can also contain various additives (d). Examples thereof are thermal inhibitors, which are intended to prevent premature polymerization, for example of hydroquinone, hydroquinone derivatives, p-methoxyphenol, β-naphthol or spherically hindered phenols, for example 2, 6-di (ter- butyl) -p-cresol. To increase storage stability in the dark it is possible, for example, to use copper compounds, such as copper naphthenate, stearate or octoate, phosphorus compounds, for example triphenylphosphine, tributylphosphine, triethyl phosphite, triphenyl phosphite or phosphite. of tribenzyl, quaternary ammonium compounds, for example tetramethylammonium chloride or trimethylbenzylammonium chloride, or hydroxylamine derivatives, for example N-diethylhydroxylamine. To exclude atmospheric oxygen during polymerization, it is possible to add a paraffin or similar substances to the wax that migrate to the surface at the beginning of polymerization due to their lack of solubility in the polymers, and form a transparent surface layer which prevents the entry of air. It is also possible to apply a layer impermeable to oxygen. The photoprotective agents of light that can be used are UV absorbers, for example those of the hydroxyphenylbenzotriazole, hydroxyphenylbenzophenone, oxalamide or hydroxyphenyl-s-triazine type. The compounds can be used individually or as mixtures, with or without the use of sterically hindered amines (HALS). Examples of such UV absorbers and light-protecting agents are 1. 2- (2'-Hydroxyphenyl) benzotriazoles, for example 2- (2'-hydroxy-5'-methylphenyl) benzotriazole, 2- (3 ', 5 '-di-tert-butyl-2' -hydroxyphenyl) benzotriazole, 2- (5'-tert-butyl-2'-hydroxyphenyl) benzotriazole, 2- (2'-hydroxy-5 '- (1, l, 3, 3-tetramethylbutyl) phenyl) benzotriazole, 2- (3 ', 5'-di-tert-buti.1-2' -hydroxyphenyl) -5-chlorobenzotriazole, 2- (3'-tert-butyl-2'-hydroxy) 5'-methylphenyl) -5-chlorobenzotriazole, 2- (3 '-sec-butyl-5'-tert-butyl-2'-hydroxyphenyl) benzotriazole, 2- (2'-hydroxy-4'-octoxyphenyl) benzotriazole, - (3 ', 5' -di-ter-amyl-2 '-hydroxyphenyl) benzotriazole, 2- (3', 5'-bis (a, a-dimethylbenzyl) -2'-hydroxyphenyl) benzotriazole, mixture of 2 - (3'-tert-butyl-2'-hydroxy-5 '- (2-octyloxycarbonylethyl) phenyl) -5-chlorobenzo-triazole, 2- (3'-tert-butyl-5' - [2- (2-ethylhexyloxy ) carbonylethyl] -2 '-hydroxyphenyl) -5-chlorobenzotriazole, 2- (3'-tert-butyl-2'-hydroxy-5' - (2-methoxycarbonylethyl) phenyl) -5-chlorobenzo -triazole, 2- (3'-tert-butyl-2'-hydroxy-5 '- (2-methoxycarbonyl-ethyl) phenyl) benzotriazole, 2- (3'-tert-butyl-2'-hydroxy-5' - (2-octyloxycarbonylethyl) phenyl) benzotriazole, 2- (3'-tert-butyl- '- [2- (2-ethylhexyloxy) carbonylethyl] -2'-hydroxyphenyl) benzotriazole, 2- (3'-dodecyl-2'-hydroxy-5'-methylphenyl) benzotriazole, and 2- (3'-ester) butyl-2 '-hydroxy-5' - (2-isooctyloxycarbonylethyl) -phenylbenzotriazole, 2,2 '-methylenebis [4- (1,1,3,3-tetramethyl-butyl) -6-benzotriazol-2-yl-phenol] the product of the transesterification of 2- [3'-tert-butyl-5 '- (2-methoxycarbonyl-ethyl) -2'-hydroxyphenyl] -enototriazole with polyethylene glycol 300; [R-CH2CH2-C00 (CH2) 3] 2- where R = 3 '-tert-butyl-4' -hydroxy-5'-2H-benzotriazol-2-yl phenyl 2. 2-Hydroxybenzophenones, for example the 4-hydroxy, 4-methoxy, 4-octoxy derivatives , 4-decyloxy, 4-dodecyloxy, 4-benzyloxy, 4, 2 ', 4' -trihydroxy and 2'-hydroxy-4,4'-dimethoxy 3. Esters of benzoic acids, unsubstituted or substituted, for example salicylate 4-tert-butyl-phenyl, phenyl salicylate, octylphenyl salicylate, dibenzoylresorcinol, bis (4-tert-butylbenzoyl) resorcinol, benzoylresorcinol, 3,4-di-tert-butyl-4-hydroxybenzoate 2,4-diol. ter butylphenyl, hexadecyl 3, 5-di-tert-butyl-4-hydroxybenzoate, octadecyl 3,5-di-tert-butyl-4-hydroxybenzoate, 3,5-di-tert-butyl-4-hydroxybenzoate methyl-4,6-di-tert-butylphenyl. Acrylates, for example a-cyano-β, ethyl β-diphenylacrylate and isooctyl, α-carbomethoxycinnamate of methyl, methyl and butyl a-cyano-β-methyl-p-methoxycinnamate, methyl α-carbomethoxy-p-methoxycinnamate and N- (β-carbometho-xi-β-cyanovinyl) -2-methylindoline. 5. Sterically hindered amines, for example bis (2, 2, 6,6-tetramethylpiperidyl) sebacate, bis (2, 2, 6,6-tetramethylpiperidyl) succinate, bis (1, 2, 2, 6, 6-pentamethylpiperidyl), n-butyl-3, 5-di-tert-butyl-4-hydroxy-benzylmalonate bis (1, 2, 2, 6, 6-pentamethylpiperidyl), the product of the condensation of l-hydroxyethyl- 2, 2, 6, 6-tetramethyl-4-hydroxypiperidine and succinic acid, the product of the condensation of N, N'-bis (2, 2, 6,6-tetramethyl-4-piperidyl) hexamethylenediamine and 4-ter- octylamino-2,6-dichloro-1,3,5-s-triazine, tris (2, 2, 6, 6-tetramethyl-4-piperidyl) nitrilotriacetate, tetracis (2, 2, 6, 6-tetramethyl-4) -piperidyl) 1, 2, 3, 4-butanetetraoate, 1,1 '- (1,2-ethanediyl) bis- (3,3,5,5,5-tetramethylpiperazinone), 4-benzoyl-2, 2, 6, 6 -tetramethylpiperidine, 4-stearyloxy-2,2,6,6-tetramethylpiperidine, 2-n-butyl-2- (2-hydroxy-3, 5-di-tert-butylbenzyl) malonate bis (1, 2, 2, 6,6-pentamethylpiperidyl), 3-n-octyl-7,7,9,9-tetramethyl-1 , 3,8-triazaspiro [4.5] decane-2,4-dione, bis (l-octyloxy-2, 2,6,6,6-tetra-methylpiperidyl) sebacate, bis (l-octyloxy-2, 2-succinate, 6,6-tetra-methylpiperidyl), the product of the condensation of N, N'-bis (2, 2, 6,6-tetramethyl-4-piperidyl) hexamethylene-diamine and 4- mofolino-2, 6-dichloro-l, 3, 5-triazine, the product of the condensation of 2-chloro-4,6-di (4-n-butylamino-2, 2,6,6-tetramethylpiperidyl) 1, 3, 5-triazine and 1,2-bis (3-aminopropyl-amino) ethane, the product of the condensation of 2-chloro-4,6-di (-n-butylamino-1, 2,2, 6,6 -pentamethylpiperidyl) -1,3,5-triazine and 1,2-bis (3-aminopropylamino) ethane, 8-acetyl-3-dodecyl-7, 7,9,9, -tetramethyl-1,3,8-triazaspiro [4.5] decane-2,4-dione, 3-dodecyl-l- (2, 2, 6, 6-tetramethyl-4-piperidyl) -pyrrolidin-2, 5-dione, 3-dodecyl-1- (1, 2,2,6,6-pentamethyl-4-piperidyl) pyrrolidin-2, 5-dione, 2,4-bis [N- (1-cyclohexyloxy-2,2,6,6-tetramethylpiperidin-4-yl) - N-butyl-amino] -6- (2-hydroxyethyl) amino-1,3,5-triazine, the product of the condensation of 2,4-bis [l-cyclohexyloxy-2, 2,6,6-tetramethylpiperidin- 4-yl) butylamino] -6-chloro-s-triazine and N, N '-bis (3-aminopropyl) ethylenediamine. 6. Oxalamides, for example 4,4'-dioctyloxyoxanilide, 2,2 '-dietoxyoxanilide, 2,2' -dioctyloxy-5,5'-di-tert-butyloxanilide, 2,2'-didodecyloxy-5, 5 '- di-tert-butyloxanilide, 2-ethoxy-2'-ethyloxanilide, N, N'-bis (3-dimethylaminopropyl) oxalamide, 2-ethoxy-5-tert-butyl-2'-ethyloxanilide and mixtures thereof with 2- ethoxy-2'-ethyl-5,4'-di-tert-butyloxanilide, and mixtures of o- and p-methoxy- and o- and p-ethoxy-substituted oxanilides. 7. 2- (2-Hydroxyphenyl) -1,3,5-triazines, for example 2, 4, 6-tris (2-hydroxy-octyloxyphenyl) -1,3,5-triazine, 2- (2-hydroxy-4-octyloxyphenyl) -4,6-bis (2,4-dimethyl-phenyl) -1, 3, 5-triazine, 2- (2,4-dihydroxyphenyl) -4,6-bis (2,5-dimethylphenyl) -1,3,5-triazine, 2,4-bis (2-hydroxy) 4-propyloxyphenyl) -6- (2,4-dimethyl-phenyl) -1,3,5-triazine, 2- (2-hydroxy-4-octyloxyphenyl) -4,6-bis (4-methyl-phenyl) - 1, 3, 5-triazine, 2- (2-hydroxy-4-dodecyloxyphenyl) -4,6-bis (2,4-di-methylphenyl) -1,3,5-triazine, 2- [2-hydroxy] 4- (2-hydroxy-3-butyloxypropyloxy) phenyl] -4,6-bis (2,4-dimethylphenyl) -1,3,5-triazine, 2- [2-hydroxy-4- (2-hydroxy-3 -octyloxy-propyloxy) phenyl] -4,6-bis (2,4-dimethylphenyl) -1,3,5-triazine and 2- [-dodecyl / tridecyloxy (2-hydroxypropyl) oxy-2-hydroxyphenyl] -4, 6-bis (2,4-dimethylphenyl) -1,3,5-triazine. 8. Phosphites and phosphonites, for example triphenyl phosphite, diphenyl alkylphosphites, phenyl dialkylphosphites, tris (nonylphenyl) phosphite, trilauryl phosphite, trioctadecyl phosphite, distearyl pentaerythritol diphosphite, tris (2, 4-di-ter) phosphite -butylphenyl), diisodecylpentaerythritol diphosphite, diphosphite of bis (2,4-di-tert-butylphenyl) pentaerythritol, diphosphite of bis (2,6-di- tert-butyl-4-methylphenyl) pentaerythritol, bisisodecyloxy-pentaerythritol diphosphite, diphosphite of bis (2,4-di-tert-butyl-6-methylphenyl) pentaerythritol, diphosphite of bis (2,4,6-tri-ter- butylphenyl) pentaerythritol, tristearisorbitol triphosphite, tetracis- (2,4-di-tert-butylphenyl) -4,4'-biphenylenediphosphonyl, 6-isooctyloxy-2,, 8, 10-tetra-tert-butyl-12H-dibenz [ d, g] -1, 3, 2-dioxaphosphocin, 6-fluoro-2,4,8, 10-tetra-tert-butyl-12-methyl-dibenz [d, g] -1, 3, 2-dioxa- phosphocin, bis (2, -di-tert-butyl-6-methyl-phenyl) methylphosphite, and bis (2,4-di-tert-butyl-6-methylphenyl) ethylphosphite. Examples of UV absorbers and photoprotective agents suitable as component (d) are also "Krypto-UVA", as described, for example, in EP 180548. It is also possible to use latent UV absorbers, as described, for example. , by Hida et al. in RadTech Asia 97, 1997, page 212. It is also possible to use the additives customary in the art, for example antistatics, release aids and adhesion enhancers. To accelerate the photopolymerization it is also possible to add, as additional additives (d), a large number of amines, for example triethanolamine, N-methyldiethanolamine, ethyl p-dimethylaminobenzoate or Michlers ketone. The action of the amines can be intensified by the addition of aromatic ketones, for example of the type of benzophenone. Examples of amines that can be used as oxygen scavengers are N, substituted -dialkyloanilines, as described in EP 339841. Other accelerators, coinitiators and auto-oxidants are thiols, thioethers, disulfides and phosphines, as described, for example, in EP 438123 and GB 2180358. It is also possible to add the chain transfer agents customary in the art to the compositions according to the invention. Examples thereof are mercaptans, amines and benzothiazoles. The photopolymerization can also be accelerated by the addition of photosensitizers, as additional additives (d); those deviate and / or expand the spectral sensitivity. These are, in particular, aromatic carbonyl compounds, for example benzophenone, thioxanthone, in particular also isopropylthioxanthone, anthraquinone and 3-acylcoumarin derivatives, terphenyls, styryl ketones, and 3- (aroylmethylene) thiazolines, camphorquinone, but also eosin dyes, rhodamine and erythrosine. As photosensitizers, it is also possible, for example, to consider the amines given above. Additional examples of such photosensitizers are 1. Thioxanthones thioxanthone, 2-isopropylthioxanthone, 2-chlorothioxanthone, 2-dodecylthioxanthone, 2,4-diethylthioxanthone, 2,4-dimethylthioxanthone, 1-methoxycarbonylthioxanthone, 2-ethoxycarbonylthioxanthone, 3- (2-methoxyethoxycarbonyl) thioxanthone, 4-butoxycarbonyl ioxanthone , 3-butoxycarbonyl-7-me iltioxantona, l-cyano-3-clorotioxantsna, l-ethoxycarbonyl-3-chlorothioxanthone, l-ethoxycarbonyl-3-etoxitioxantona, 1-ethoxycarbonyl-3-aminotioxantona, 1-ethoxycarbonyl-3-fenilsulfuriltioxantona, 3, 4-di- [2- (2-methoxyethoxy) ethoxycarbonyl] thioxanthone, 1-ethoxy-carbonyl-3- (1-methyl-1-morpholinoethyl) thioxanthone, 2-methyl-6-dimethoxymethylthioxanthone, 2-methyl-6 - (1, 1-dimethoxybenzyl) -tioxantona, 2-morfolinometiltioxantona, 2-methyl-6-morfolinometiltioxantona, n-aliltioxantona-3, 4-dicarboximide, n-octiltioxantona-3, 4-dicarboximide, N- (1, 1, 3, 3-tetra-methylbutyl) thioxanthone-3,4-dicarboximide, 1-phenoxythioxanthone, 6-ethoxycarbonyl-2-methoxythioxanthone, 6-ethoxycarbonyl-2-methylthioxanthone, thioxanthone-2-polyethylene glycol ester, 2-hydroxy-3- (3, 4-dimethyl-9-oxo-9H-thioxanton-2-yloxy) -N, N, N-trimethyl-1-propanaminium chloride; 2. Benzophenones benzophenone, 4-phenylbenzophenone, 4-methoxybenzophenone, 4,4' -dimetoxibenzofenona, 4,4'-dimethylbenzophenone, 4,4' -diclorobenzofenona, 4,4'-dimethylaminobenzophenone, 4 '-dietilaminobenzofenona, 4- methylbenzophenone, 2,4,6-trimethylbenzophenone, 4- (4-methylthiophenyl) benzophenone, 3,3'-dimethyl-4-methoxybenzophenone, methyl-2-benzoylbenzoate, 4- (2-hydroxyethylthio) benzophenone, 4- (4- tolylthio) benzophenone, 4-benzoyl-N, N, M-trimethylbenzenemethanminium chloride, 2-hydroxy-3- (4-benzoylphenoxy) -N, N, N-trimethyl-1-propanaminium chloride monohydrate, 4- (13 -acyloyl-l, 4,7, 10, 13-pentaoxatridecyl) benzophenone, 4-benzoyl-N, N-dimethyl-N- [2- (l-oxo-2-propenyl) -oxy] ethylbenzenemethamninium chloride; 3. 3-Acilcumarinas 3-benzoilcumarina, 3-benzoyl-7-methoxycoumarin, 3-benzoyl-5, 7-di (propoxy) coumarin, 3-benzoyl-6, 8-diclorocumarina, 3-benzoyl-6-chlorocoumarin, 3 , 3'-carbonylbis [5,7-di (propoxy) coumarin], 3'3'-carbonybis (7-methoxycoumarin), 3,3'-carbonybis (7-diethylaminocoumarin), 3-isobutyroylcoumarin, 3-benzoyl-5 , 7-dimethoxycoumarin, 3-benzoyl-5,7-diethoxycoumarin, 3-benzoyl-5,7-dibutoxycoumarin, 3-benzoyl-5,7-di (methoxyethoxy) coumarin, 3-benzoyl-5,7-di (allyloxy) ) coumarin, 3-benzoyl-7-dimetilaminocumarina, 3-benzoyl-7-diethylaminocoumarin, 3-isobutiroil-7-dimetilaminocumarina, 5, 7-dimethoxy-3- (1-naphthoyl) coumarin, 5, 7-dimethoxy-3- (1-naphthoyl) coumarin, 3-benzoylbenzo [f] -coumarin, 7-diethylamino-3-thienoylcoumarin, 3- (4-cyanobenzoyl) -5,7-dimethoxycoumarin; 4. 3- (Aroylmethylene) thiazolines 3-Methyl-2-benzoylmethylene-b-naphthhothiazoline, 3-methyl-2-benzoylmethylenebenzthiazoline, 3-ethyl-2-propionylmethylene-b-naphthhothiazoline; 5. Other carbonyl compounds Acetophenone, 3-methoxyacetophenone, 4-phenylaceto-phenone, benzyl, 2-acetylnaphthalene, 2-naphthaldehyde, 9,10-anthraquinone, 9-fluorenone, dibenzosuberone, xanthone, 2,5-bis (4- diethylaminobenzylidene) cyclopentanone, a- (para-dimethylaminobenzylidene) ketones, such as 2- (4-dimethylaminobenzylidene) indan-1-one or 3- (4-dimethylaminophenyl) -l-indan-5-yl-propenone, 3-phenylthiophthalimide , N-methyl-3,5-di (ethylthio) phthalimide. The curing process can also be assisted, in particular, by pigmented compositions (for example with titanium dioxide), also for the addition as additional additive (d) of a component which forms the radicals under thermal conditions, for example a azo compound, such as 2, 2'-azobis (4-methoxy-2,4-dimethylvaleronitrile), a triazene, diazo sulfide, pentazadiene or a peroxy compound, for example hydroperoxide or peroxycarbonate, for example t-butyl hydroperoxide, as it is described, for example, in EP 245639. As an additional additive (d), the compositions according to the invention can also comprise a photo-reproducible dye, for example xanthene dyes, benzoxanthene, benzothioxanthene, thiazine, pyronine, porphyrin or acridine, and / or a radiation-cleavable trihalomethyl compound. Similar compositions are described, for example, in EP 445624. Depending on the intended use, the additional customary additives (d) are optical brighteners, fillers, pigments, both white and colored pigments, dyes, antistatics, wetting agents or leveling aids. For the curing of coarse and pigmented coatings, the addition of glass microbeads or powdered glass fibers, as described, for example, in US 5013768, is suitable. The formulations may also comprise dyes and / or white or colored pigments. Depending on the intended use, the possible use of organic and inorganic pigments. Such additives are known to those skilled in the art, the examples being pigments of titanium oxide, for example of the rutile or anatase type, carbon black, zinc oxide, such as zinc white, iron oxides, such as iron oxide yellow, iron oxide red, chrome yellow, chrome green, nickel and titanium yellow, ultramarine blue, cobalt blue, bismuth vanadate, cadmium yellow or cadmium red. Examples of organic pigments are mono- or bisazo pigments, and metal complexes thereof, phthalocyanine pigments, polycyclic pigments, for example perylene, anthraquinone, thioindigo, quinacridone or triphenylmethane pigments and diketopyrrolopyrrole, isoindolinone pigments, for example tetrachloroisoindolinone, isoindoline, dioxacin, benzimidazolone and quinophthalone. The pigments can be used individually or also as mixtures in the formulations. Depending on the intended use, the pigments are added to the formulations in amounts customary in the art, for example in an amount of 0.1 to 60% by weight, 0.1 to 30% by weight or 10 to 30% by weight, in base to the total composition. The formulations can, for example, also comprise organic dyes of very different kinds. Examples are azo dyes, methine dyes, anthraquinone dyes or metal complex dyes. The customary concentrations of the compositions are, for example, 0.1 to 20%, in particular 1 to 5%, based on the total compositions. Depending on the use of the formulation, the compounds can also neutralize the acids, in particular the amines used as stabilizers. Suitable systems are described, for example, in JP-A 11-199610. Examples are pyridine and derivatives of the same, N-alkylanyl or N, N-dialkylanilines, pyrazine derivatives, pyrrole derivatives, etc. The choice of additives depends on the field of application in question and the properties desired for this field. The additives described above (d) are those customary in the art and consequently are used in amounts customary in the art. The invention also provides compositions comprising, as components (a), at least one photopolymerizable ethylenically unsaturated compound that is emulsified and dissolved in water. Such radiation curable prepolymer dispersions are commercially available in many variations. It should be understood that this means a dispersion of water and at least one prepolymer dispersed therein. The concentration of water in these systems is, for example, 2 to 80% by weight, in particular 30 to 60% by weight. Prepolymers or radiation-curable prepolymer mixtures are present, for example, in concentrations of 95 to 20% by weight, in particular 70 to 40% by weight. In these compositions, the total of the percentages given for water and prepolymers is in each case 100, with auxiliaries and additives being added in various amounts, depending on the intended use.

The prepolymers that form radiation curable films that are dispersed, and often also dissolved, in water are mono- or polyfunctional ethylenically unsaturated prepolymers which can be initiated by free radicals and are known per se for aqueous prepolymer dispersions, which have, for example, a content of 0.01 to 1.0 mol per 100 g of polymerizable double bond prepolymer, and also an average molecular weight of, for example, at least 400, in particular 500 to 10,000. However, depending on the intended use, prepolymers with high molecular weights are also suitable. Polyesters containing polymerizable CC double bonds and have an acid number of at most 10, the polyethers containing polymerizable CC double bonds, the hydroxyl-containing products of the reaction of a polyepoxide containing at least two epoxide groups per molecule with at least one α, β-ethylenically unsaturated carboxylic acid, polyurethane (meth) acrylates, and acrylic copolymers containing α, β-ethylenically unsaturated acrylic radicals, as described in EP 12339. Mixtures of these prepolymers can be used in the same way Also suitable are the polymerizable prepolymers described in EP 33896, which are thioether adducts of polymerizable prepolymers having an average molecular weight of at least 600, a carboxyl group content of 0.2 to 15% and a content of 0.01 to 0.8 mol of polymerizable C-C double bonds per 100 g of prepolymer. Other suitable aqueous dispersions based on specific (meth) acrylic alkyl ester polymers are described in EP 41125, and suitable, water-curable, water-dispersible prepolymers of urethane acrylates can be found in DE 2936039. As additional additives , those aqueous radiation curable prepolymer dispersions may also comprise the additional additives described above (d), ie, for example, dispersion aids, emulsifiers, antioxidants, photostabilizers, dyes, pigments, fillers or fillers, for example talc, gypsum, silica, rutile, carbon black, zinc oxide, iron oxide, reaction accelerators, leveling agents, lubricants, wetting agents, thickeners, delusterants, defoamers and other customary auxiliaries in surface coating technology. Suitable dispersion aids are water-soluble high molecular weight organic compounds having polar groups, for example polyvinyl alcohols, polyvinylpyrrolidone or cellulose ethers. The emulsifiers that can be used nonionic emulsifiers, and, where appropriate, also ionic emulsifiers. The photoinitiators of the formula II or III according to the invention can also be dispersed as such in aqueous solutions and added in this dispersed form to the mixture to be cured. Treated with suitable nonionic or, where appropriate, also ionic emulsifiers, the compounds of the formula II or III according to the invention can be incorporated by mixing and for example by binding in water. This produces stable emulsions which can be used as photoinitiators, in particular for aqueous photocurable mixtures as described above. In certain cases, it may be advantageous to use mixtures of two or more of the photoinitiators according to the invention. Of course it is also possible to use mixtures with known photoinitiators, for example mixtures with camphorquinone, benzophenone, benzophenone derivatives, acetophenone, acetophenone derivatives, for example a-hydroxycycloalkyl phenyl ketones or 2-hydroxy-2-methyl-1-phenylpropanone, dialcoxyacetophenones, -hydroxy or a-aminoacetophenones, for example 4-methylthiobenzoyl-1-methyl-1-morpholinoethane, 4-morpholinobenzoyl-1-benzyl-1-dimethylaminopropane, 4-aroyl-1, 3-dioxolanes, benzoin alkyl ethers and benzyl ketals, for example benzyl dimethyl ketal, phenyl glyoxalates and derivatives thereof, glyoxalates of dimeric phenyl, peresters, for example benzophenonatotracarboxylic esters, as described, for example, in EP 126541, mono-cylphosphine oxides, for example (2,4,6-trimethylbenzoyl) phenylphosphine oxide, bisacylphosphine oxides, for example bis (2,6-dimethoxybenzoyl) (2,4-trimethylpent-l-yl) phosphine, bis (2,4,6-trimethylbenzoyl) phenylphosphine oxide or bis (2,4,6-trimethylbenzoyl) oxide (2) , 4-dipentaxyphenyl) phosphine, trisacylphosphine oxides, halomethyltriazines, for example 2- [2- (4-methoxyphenyl) vinyl] -4,6-bistrichloromethyl- [1, 3, 5] triazine, 2- (4-methoxyphenyl) -4,6-bis-trichloromethyl- [1,3,5] triazine, 2- (3,4-dimethoxyphenyl) -4,6-bistrichloromethyl- [1,3,5] triazine, 2-methyl-4,6-bistrichloromethyl- [1, 3, 5] triazine, hexaarylbisimidazole / coinitiator systems, for example ortho-chlorohexaphenylbisimidazole in combination with 2-mercaptobenzo-thiazole; ferrocenium compounds or titanocenes, for example dicyclopentadienylbis (2,6-difluoro-3-pyrrolophenyl) titanium. The coinitiators that can be used as borate compounds. In the case of the use of the photoinitiators according to the invention in hybrid systems, in this respect mixtures of radical and cationically free curing systems are sought, in addition to the radical-free curing agents according to the invention, they are used cationic photoinitiators, for example benzoyl peroxide (other suitable peroxides are described in US 4950581, column 19, lines 17-25), aromatic sulfonium, phosphonium or iodonium salts, as described, for example in US 4950581, column 18, line 60 to column 19, line 10, or complex cyclopentadienyl iron (II) salts, for example (? 6-isopropylbenzene) (? 5-cyclopentadienyl) iron (II) hexafluorophosphate. The invention also provides compositions in which the additional photoinitiators (c) are compounds of the formula VIII, IX, X, XI or mixtures thereof, O O R, I I I I R 34 - p - c - R35. { x) R39 T1"R3: ??: in which 33 38 R25 is hydrogen, C? -C18 alkyl, C? -C18 alkoxy, -OCH2CH2-029, morpholino, SCH3, CH3 CH, i i a group H c-¿or a group G1- | -CH, C- G2; n has a value of 2 to 10; Gx and G2 independently of each other are final groups of the polymer unit, in particular hydrogen or CH3; R26 is hydroxyl, C? -C16 alkoxy, morpholino, dimethylamino or -0 (CH2CH20) m-C? -C? G alkyl; R27 and R28 independently of each other are hydrogen, C-C6 alkyl, phenyl, benzyl, C? -C6 alkoxy or -O (CH2CH20) m-C? -C? 6 alkyl, or R27 and R28 together with the carbon atom to which they are attached form a cyclohexyl ring; m is a number of 1-20; where R2g, R27 and R28 are not all C1-C16 alkoxy or -O (CH2CH20) m-C16-C16 alkyl at the same time, and OCH, R2S is hydrogen, II C-CH = CH. C-C = CH. R-O and R32 independently of one another are hydrogen or methyl; R3x is hydrogen, methyl or phenylthio, wherein the phenyl ring of the phenylthio radical radical is unsubstituted or substituted by C?-C4 alkyl at positions 4-, 2-, 2,4- or 2,4,6; R 33 and R 34 independently of one another are C 1 -C 2 alkyl, cyclohexyl, cyclopentyl, phenyl, naphthyl or biphenyl, wherein these radicals are unsubstituted or substituted by halogen, C 1 -C 12 alkyl and / or C 1 alkoxy C12, or R33 is a 5- or 6-membered heterocyclic ring containing S or N Or they are II C-R35; R35 is cyclohexyl, cyclopentyl, phenyl, naphthyl or biphenyl, wherein those radicals are not substituted by halogen, C? -C4 alkyl and / or C? -C4 alkoxy, or R35 is a 5- or 6-membered heterocyclic ring containing S or N, R3ß and R37 independently of each other are unsubstituted cyclopentadienyl or cyclopentadienyl substituted once, twice or three times by C? -C18 alkyl, C? -C? Alkoxy, cyclopentyl, cyclohexyl or halogen; and R38 and R39 independently of one another are phenyl which is substituted in at least one of the two ortho positions in relation to the titanium-carbon bond per atoms of fluorine or CF, and which, on the aromatic ring, may contain, as substituents additional, unsubstituted pyrrolinyl or pyrrolinyl substituted by one or two C? -C? 2 alkyl, di (C? -C? 2) aminomethyl, morpholinomethyl, C2-C4 alkenyl, methoxymethyl, ethoxymethyl, trimethylsilyl, formyl, methoxy or phenyl; or polyoxaalkyl, R40, R4? and R 2 independently of each other are hydrogen, halogen, C 2 -C 2 alkenyl, C 1 -C 2 alkoxy, C 2 -C 2 alkoxy interrupted by one to four O atoms, cyclohexyloxy, cyclopentyloxy, phenoxy, benzyloxy, unsubstituted phenyl or phenyl substituted by C 1 -C alkoxy, halogen, phenylthio or C 1 -C 4 alkylthio; or biphenyl, where R40 and R42 are not both hydrogen at the same time and in the radical at least one radical R4o or R 2 is C 1 -C 2 alkoxy, C 2 -C 2 alkoxy interrupted by one to four 0-cyclohexyloxy, cyclopentyloxy, phenoxy or benzyloxy atoms; Ex is 0, S or NR43; and R43 is C?-C8 alkyl, phenyl or cyclohexyl. R25 as C? -C? 8 alkyl can have the same meaning as described for the compounds of formulas I, II or III. Also, R 27 and R 28 as C 1 -C 6 alkyl and R 2 S as C 1 -C 4 alkyl may have the same meanings described above in addition to the respective numbers of carbon atoms. The alkoxy of C? -C? 8 is, for example, branched or unbranched alkoxy, for example methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, isobutoxy, sec-butoxy, tert-butoxy, pentoxy, hexyloxy, heptyloxy, octyloxy, 2,4,4-trimethylpent-1-yloxy, 2-ethylhexyloxy, nonyloxy, decyloxy, dodecyloxy or octadecyloxy.

The C2-C2 alkoxy has the meanings given above in addition to the corresponding number of carbon atoms. The C? -C? Alkoxy has the meanings given above in addition to the corresponding number of carbon atoms, and decyloxy, methoxy and ethoxy are preferred, in particular methoxy and ethoxy. The radical -0 (CH2CH20) m-C6-C16 alkyl ranges from 1 to 20 consecutive ethylene oxide units whose chain ends with a C? -C? G alkyl. Preferably, m is from 1 to 10, for example from 1 to 8, in particular from 1 to 6. Preferably, the chain of the ethylene oxide unit ends with a C? -C10 alkyl, for example alkyl of Ci-Cß, in particular with a C? ~ C alkyl. R3? as a substituted phenylthio ring is preferably p-tolylthio. R33 and R34 as C? -C2o alkyl are linear or branched and are, for example, C? -C? 2 alkyl, C? -C? Alkyl, C? -Cg alkyl or C? -C4 alkyl. Examples are methyl, ethyl, propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, pentyl, hexyl, heptyl, 2,4,4-trimethylpentyl, 2-ethylhexyl, octyl, nonyl, decyl, undecyl, dodecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl or icosyl. Preferably, R 33 as alkyl is C 1 -C 8 alkyl.

R33, R34 and R35 as substituted phenyl are mono- to pentasubstituted, for example mono-, di- or trisubstituted, in particular tri- or disubstituted, on the phenyl ring. The substituted phenyl, naphthyl or biphenyl are substituted, for example, with linear or branched C? -C alkyl such as methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, s-butyl or t-butyl or with an alkoxy of linear or branched C? -C4 such as methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, isobutoxy, s-butoxy or t-butoxy, preferably with methyl or methoxy. If R33, R34 and R35 are a 5- or 6-membered heterocyclic ring containing S or N, they are, for example, thienyl, pyrrolyl or pyridyl. In the expression di (C? -C? 2) aminomethyl alkyl, C? -C? 2 alkyl have the same meanings as given above. The C2-C2 alkenyl is linear or branched, can be mono- or polyunsaturated and is, for example, allyl, methallyl, 1,1-dimethylallyl, 1-butenyl, 2-butenyl, 1,3-pentadienyl, -hexenyl or 1-octenyl, in particular allyl. The C 1 -C 4 alkylthio is linear or branched and is, for example, methylthio, ethylthio, n-propylthio, isopropylthio, n-butylthio, isobutylthio, s-butylthio or t-butylthio, preferably methylthio.

The alkenyl of C-C4 is, for example, allyl, methallyl, 1-butenyl or 2-butenyl. The halogen is fluorine, chlorine, bromine and iodine, preferably fluorine, chlorine and bromine. The term polyoxaalkyl includes C2-C2o alkyl interrupted by 1 to 9 O atoms and means, for example, structural units such as CH3-0-CH2-, CH3CH2-0-CH2CH2-, CH30 [CH2CH20] and-, where y = 1-9, - (CH2CH20) 7CH2CH3, -CH2-CH (CH3) -0-CH2-CH2CH3. Preference is given to compositions in which R25 is hydrogen, -OCH2CH2-029, morpholino, SCH3, a CH, CH, group HC = ¿or a group GlA-CH2- 'G.

R2e is hydroxyl, C? -C? 6 alkoxy, morpholino or dimethylamino; R27 and R2s independently of each other are alkyl C? -C, phenyl, benzyl or C? -C? Alkoxy, or R27 and R28 together with the carbon atoms to which they are attached form a cyclohexyl ring; Or R29 is hydrogen or c-CH = CH ' R30, R3? and R32 are hydrogen; R 33 is C 1 -C 1 alkyl, unsubstituted phenyl or phenyl substituted by C 1 -C 2 alkyl and / or C 1 -C 12 alkoxy; R 35 is phenyl which is substituted by C 1 -C 4 alkyl and / or C 1 -C 4 alkoxy. Preferred compounds of the formulas VIII, IX, X and XI are a-hydroxycyclohexyl phenyl ketone or 2-hydroxy-2-methyl-1-phenylpropanone-, (4-methylthiobenzoyl) -1-methyl-1-morpholinoethane, (4- morpholinobenzoyl) -1-benzyl-1-dimethyl-aminopropane, benzyl dimethyl ketal, (2,4,6-trimethylbenzoyl) phenylphosphine oxide, bis (2,6-dimethoxy-benzoyl) oxide (2, 4, 4-trimethyl) -pent-1-yl) phosphine, bis (2,4,6-trimethylbenzoyl) phenylphosphine oxide or bis (2,4,6-trimethylbenzoyl) (2,4-dipentoxyphenyl) phosphine oxide and dicyclo-pentadienylbis (2, 6-difluoro-3-pyrrolo) titanium. Preference is given to compositions in which, in formula VIII, R27 and R28 independently of each other are C? -Cg alkyl, or together with the carbon atom to which they are attached they form a cyclohexyl ring, and R26 is hydroxyl. The proportion of compounds of formula II and / or III (photoinitiator component (b)) in the mixture with compounds of formulas VIII, IX, X and / or XI (photoinitiator component (c)) is from 5 to 99%, for example 20-80%, preferably 25-75%.

Also important are compositions in which, in the compounds of formula VIII, R27 and R28 are identical and are methyl, and R2g is hydroxyl or isopropoxy. Likewise preferred are compositions comprising compounds of formula II and / or III and compounds of formula X in which R33 is phenyl or C? -C? 2 alkyl unsubstituted or mono- or trisubstituted with alkyl of C? -C12 and / or substituted with C? -C12 alkoxy; Or R34 is the group C-R ° phenyl; Y R 35 is phenyl substituted by one to three C 1 -C 4 alkyl or C 1 -C 4 alkoxy. Of particular interest are the compositions described above which comprise photoinitiating mixtures of the formulas II, III, VIII, IX, X and / or XI and are liquid at room temperature. The preparation of the compounds of the formulas VIII, IX, X and XI is generally known to those skilled in the art and some of the compounds are commercially available. The preparation of oligomeric compounds of formula VIII is described, for example, in EP 161463. A description of the preparation of the compounds of formula IX can, for example, be found in EP 209831. The preparation of the compounds of formula X is described, for example, in EP 7508, EP 184095 and GB 2259704. The preparation of the compounds of formula XI is described, for example, in EP 318894, EP 318893 and EP 565488. The photopolymerizable compositions advantageously comprise the photoinitiator in an amount of about 0.05 to 20% by weight, for example 0.05 to 15% by weight, preferably 0.1 to 5% by weight, based on the composition. The amount of photoinitiator established was based on the total of all the photoinitiators added if mixtures thereof were used, that is, both on the photoinitiator (b) and on the photoinitiators (b) + (c). The compounds according to the invention in which Zx and Z2 are siloxane-containing radicals are particularly suitable as photoinitiators for surface coatings, in particular vehicle paints. These photoinitiators are not distributed as homogeneously as possible in the formulation to be cured, but they are enriched in a directed manner on the surface of the coating to be cured, i.e. a directed orientation of the initiator to the surface of the formulation takes place. The photopolymerizable compositions can be used for various purposes, for example as inks of printing, such as spreading or screen printing inks, flexographic printing inks or offset printing inks, as transparent coatings, as color coatings, as white coatings, for example for wood or metal, as powder coatings, as paints , in ter alia, for paper, water, metal or plastic, as curable coatings such as daylight to mark buildings or roads, for photographic reproduction processes, for holographic recording materials, for image registration processes or for production of printing plates, which can be developed using organic solvents or aqueous alkaline media, for the production of masks for printing or screen printing, as dental filling materials, as adhesives, as pressure sensitive adhesives, as laminating resins, as photoprotectors, for example electroplating, protective for engraving or permanent, c omo films both liquid and dry, as photo-restructured diuretics, and as masks to stop welding for electronic circuits, as protectors for the preparation of color filters for any type of screen or to produce structures in the production process of visual representation devices plasma and electroluminescent visual representation devices, for the production of optical switches, optical grids (interference grids), for the preparation of three-dimensional objects by mass curing (UV curing in transparent molds) or by the stereolithographic process, as described, for example in US 4575330, for the preparation of composite materials (e.g. styrenic polyesters which may contain glass fibers and / or other fibers or other auxiliaries) and -other thick-layer materials, for the coating or sealing of electronic components or as coatings for optical fibers. The compositions are also suitable for the preparation of optical lenses, for example, contact lenses and Fresnel lenses, for the preparation of medical, auxiliary or implant instruments. The compositions are also suitable for the preparation of gels having thermotropic properties. Such gels are described, for example, in DE 19700064 and EP 678534. Furthermore, the compositions can be used in dry film paints, as described, for example in Paint & Coatings Industry, April 1997, 72 or Plastics World, Volume 54, No. 7, page 48 (5). The compounds according to the invention can also be used as initiators for emulsion, bead or suspension polymerizations or as initiators of a polymerization to fix the ordered states of mono and liquid-crystalline oligomers, or as initiators to fix dyes to organic materials. In surface coatings, mixtures of a prepolymer with polyunsaturated monomers which also contain a monounsaturated monomer are often used. The prepolymer here is primarily responsible for the properties of the coating film, and the variation thereof which allows one skilled in the art to influence the properties of the cured film. The polyunsaturated monomer functions as a crosslinking agent which renders the insoluble coating film. The unsaturated monomer functions as a reactive diluent, by means of which the viscosity is reduced without the need to use a solvent. Unsaturated polyester resins are mostly used in two component systems together with a monosaturated monomer, preferable with styrene. For photoprotectors, specific one-component systems are often used, for example with polymaleimides, polyhalconcones or polyimides, as described in DE 2308830. The compounds according to the invention and mixtures thereof can also be used as photoinitiators or systems of photoinitiation by free radicals for powder coatings curable by radiation. Powder coatings can be based on resins and solid monomers containing reactive double bonds, for example maleates, vinyl ethers, acrylates, acrylamides and mixtures thereof. A free radical UV curable powder coating can be formulated by mixing unsaturated polyester resins with solid acrylamides (eg, methyl methacrylamide glycolate) and with a free radical photoinitiator according to the invention, as described, for example, in the article "Radiation Curing of Powder Coating", Conference Proceedings, Radtech Europe 1993 by M. Wittig and Th. Gohmann. Similarly, free UV curable powder coatings can be formulated by mixing unsaturated polyester resins with acrylates, methacrylates, or vinyl ethers and with a photoinitiator (or photoinitiator mixture) according to the invention. The powder coatings may also comprise binders, as described, for example, in DE 4228514 and EP 636669. UV curable powder coatings may also comprise white or colored pigments. Thus, for example, rutile titanium dioxide in concentrations of up to 50% by weight can be preferably used to obtain a cured powder coating with good coverage. The process usually involves electrostatic or tribostatic spraying of the powder onto the substrate, for example metal or wood, melting the powder by heating it, and after formed a uniform film, radiation cure of the coating with ultraviolet and / or visible light, for example using medium pressure mercury lamps, metal halide lamps or xenon lamps. A particular advantage of radiation-curable powder coatings comparable with their technically curable counterparts is that the flow time - after the powder particles are melted can be extended as desired to ensure the formation of a uniform high-gloss coating . In contrast to thermally curable systems, radiation curable powder coatings can be formulated without the desired effect of a reduction in their service life, so that they melt at relatively low temperatures. For this reason, they are also suitable as coatings for thermosensitive substrates, for example wood or plastics. In addition to the photoinitiators according to the invention, the powder coating formulations may also comprise UV absorbers. The appropriate examples have been listed above under points 1-8. The photocurable compositions according to the invention are suitable, for example, as coating substances for substrates of all types, for example, wood, textiles, paper, ceramics, glass, plastics such as polyesters, polyethylene terephthalate, polyolefins or cellulose acetate, in particular in the form of films, and also metals such as Al, Cu, Ni, Fe, Zn, Mg or Co and GaAs, Si or SiO on which a protective coating is to be applied, for example by exposure to long of an image. The substrates can be coated by applying a liquid composition, a solution or a suspension to the substrate. The choice of solvent and the concentration depend mainly on the type of composition and the coating process. The solvent must be inert, that is, it must not undergo any chemical reaction with the components and must be capable of being removed again after the coating operation in the drying process. Examples of suitable solvents are ketones, ethers and esters, such as methyl ethyl ketone, isobutyl methyl ketone, cyclopentanone, cyclohexanone, N-methylpyrrolidone, dioxane, tetrahydrofuran, 2-methoxyethanol, 2-ethoxyethanol, l-methoxy-2-propanol , 1,2-dimethoxyethane, ethyl acetate, n-butyl acetate and ethyl 3-ethoxypropionate. Using the known coating processes, the formulation is applied to a substrate, for example by spin coating, dip coating, knife coating, curtain coating, brushing, spraying, especially, for example, by electrostatic spray and coating with reverse roller, and by electrophoretic deposition. It is also possible to apply the photosensitive layer to a temporary, sensitive support and then to coat the final substrate, for example a copper laminated circuit board, by means of a lamination via layer transfer. The amount applied (thickness of the layer) and the type of substrate (layer support) depend on the desired field of application. Suitable layer thicknesses for the respective fields of application, for example in the field of photoprotectors, in the field of printing inks or in the field of paints are known to those skilled in the art. Depending on the field of application, the thickness range of the layer generally includes values of about 0.1 μm to more than 10 mm. The compositions sensitive to radiation according to the invention are used, for example, as negative protectors which have a very high photosensitivity and can be developed in an aqueous alkaline medium without swelling. They are also suitable as photoprotectors for electronic devices, such as electroplating, engraving protectors, in both liquid and dry films, shields to stop welding, protectors for color filters for any type of desired screen, or for the formation of structures in the process of manufacturing visual representation of plasma and electroluminescence visual representation devices, for. the production of printing plates, for example offset printing plates, for the production of printing forms for letterpress printing, planographic printing, hole printing, flexographic printing- or forms of printing by spreading or screen printing, the production of copies to relief, for example for the production of Braille texts, for the production of stamps, for use in engraving by molding or use as microprotectors in the production of integrated circuits. The compositions can also be integrated as photo-structurable dielectrics, for the encapsulation of materials or as an insulating coating for the production of integrated microcircuits of computer, printed circuits or other electrical or electronic components. The possible layer supports and the processing conditions of the coated substrates vary accordingly. The compounds according to the invention are also used for single layer or multiple layer materials for image registration or image duplication (copies, reprography), which can be single tone or multiple colors. In addition, these materials can also be used as color test systems. In this technology, it is also possible to use formulations which contain microcapsules and, to generate the image, a thermal step can be connected downstream of the exposure step. Such systems and technologies are described, for example, in US 5376459. For the recording of photographic information, films made of polyester, cellulose acetates or plastic-coated papers are used, for example and for the forms of offset printing, uses, especially treated aluminum, for example, for the production of printed circuits, copper-coated sheets are used, for example, and for the production of integrated circuits, silicone wafers are used. The usual layer thicknesses for photographic material and printing forms for offset are generally from approximately 0.5 μm to 10 μm, and for printed circuits they are from 1.0 μm to approximately 100 μm. After the substrates have been coated, the solvent usually removed by drying to leave a layer of photoresist on the support. The term "image exposure" encompasses both exposure via a photomask containing a predetermined pattern, for example a slide, exposure by a laser beam which is moved, for example under the control of a computer, on the surface of the coated substrate, thus generating an image, and irradiation with electron beams controlled by computer. It is also possible to use liquid crystal masks that can be controlled pixel by pixel to generate digital images, as described, for example by A. Bertsch, J.Y. Jezequel, J.C. Andre in Journal of Photochemistry and Photobiology A: Chemistry 1997, 107, p 275-281 and by K.-P.Nicslay in Offset Printing 1997, 6, p. 34-37. The polymers conjugated for example in the polyanilines, can be converted from a semiconductor state to a conductive state contaminated with photons. The photoinitiators according to the invention can also be used for the exposure of images of polymerizable compositions containing such polymers to form conductive structures (in the irradiated areas) which are included in the insulating material (unexposed areas). Such materials can, for example, be used as connection components or for the production of electrical or electronic components. After the exposure of the image of the material and before the development, it may be advantageous to carry out a heat treatment for a relatively short period of time. Here, only the exposed parts are thermally cured. The temperatures used are generally 50-150 ° C, preferably 80-130 ° C; the time is usually 0.25 and 10 minutes. In addition, the photocurable composition can be used in a process for the production of printing forms or photoresists, as described, for example, in DE 4013358. Here, before, simultaneously, or after the image irradiation, the composition is briefly exposed to visible light having a wavelength of at least 400 nm without a mask. After exposure and optional heat treatment, the unexposed areas of the photoprotector are removed using a developer in a manner known per se. As already mentioned, the compositions according to the invention can be developed by aqueous alkaline means. Suitable aqueous alkaline developer solutions are, in particular, aqueous solutions of tetralkylammonium hydroxides or alkali metal silicates, phosphates, hydroxides and carbonates. Relatively small amounts of wetting agents and / or organic solvents can also be added to these solutions. Typical organic solvents that can be added to the developer liquids in small amounts are, for example, cyclohexanone, 2-ethoxyethanol, toluene, acetone and mixtures of such solutions. Light curing is of great importance for printing inks since the drying time of the Binder is a crucial factor for the speed of production "of graphic products and should be of the order of magnitude of fractions of a second.UK curable inks are of particular importance for screen printing, flexographic and offset printing.As already mentioned, The mixtures according to the invention are also highly suitable for the production of printing plates, using soluble linear polyamides or styrene / butadiene or styrene / isoprene rubber, polymethylmethacrylates or polymethyl methacrylates containing carboxyl groups, polyvinyl alcohols or urethane acrylates with photopolymerizable monomers, for example acrylic or methacrylamides or acrylic or methacrylic esters, and a photoinitiator, for example, films and plates made from these systems (wet or dry) are exposed via the negative (or positive) of the original impression and the uncured parts are subsequently washed using a suitable solvent. An additional field of use of light curing is the coating of metals, for example the coating of sheets and metal tubes, cans or bottle caps, and the production of plastic coatings, for example PVC-based wall or floor coverings. Examples of light curing of paper coatings are the colorless coatings of labels, sleeve covers or record books. Likewise, the use of the compounds of the invention according to the curing of moldings made of composite materials is of interest. The composite material consists of a self-supporting matrix material, for example fiberglass cloth, or others, for example, plant fibers [cf. K.-P. Mieck, T. Reussmann in Kunststoffe 85 (1995), 366-370], which is impregnated with the light curing formulation. The moldings made of composite materials produced using the compounds according to the invention have high stability and mechanical strength. The compounds according to the invention can also be used as curing agents in molding, impregnation or coating materials, as described, for example, in EP 7086. Such materials are, for example, thin-film resins, which they are subjected to strict requirements with respect to their activity of curing and resistance to yellowing, moldings reinforced with fiber, for example panels that diffuse the flat or longitudinally or transversely corrugated light. Processes for the production of such moldings, for example, techniques of manual placement, spreading of affixed fibers, centrifugation or slicing techniques, are described, for example, by P.H. Selden in "Glasfaserverstárkte Kunststoffe" [Glass-fiber reinforced plastics], page 610, Springer Verlag Berlin-Heidelberg-New York 1967. Examples of articles that can be produced by this method are cans, gray cardboard panels or plywood coated on both sides with glass fiber reinforced plastics, tubes, sporting goods, roof covers, and containers, etc. Additional examples of molding, impregnation and coating materials are the UP resin thin coatings for moldings containing glass fibers (GFP), for example, corrugated sheets and sheets of paper. The paper sheets can be based on urea or melamine resins. The thin coating is produced on a support (for example a film) before the production of the laminate. The photocurable compositions according to the invention can also be used for molding resins or for embedded articles, for example, electronic components, etc. In addition, they can be used for coating cavities and tubes. For curing, medium pressure mercury lamps are used, as is customary in UV curing. However, less intense lamps are also of particular interest, for example, those of type TL 40W / 03 or TL40W / 05. The intensity of these lamps corresponds approximately to that of sunlight. It is also possible to use direct sunlight for curing. An additional advantage is that the composite material can be removed from the light source in a partially cured plastic state and can deform. The curing is then carried out until its completion. The compositions and compounds according to the invention can also be used for the preparation of optical waveguides and optical switches, making use of the generation of a difference in the refractive index between the exposed and unexposed areas. Also important is the use of photocurable compositions for the processes of imaging and for the optical production of information carriers.

Here, as already described above, the coating (wet or dry) applied to the support is irradiated with UV light or visible via a photomask and the unexposed areas of the coating are removed by treatment with a solvent (= developer). The photocurable layer can also be applied to the metal by an electrodeposition technique. The exposed areas are insoluble polymer / crosslinked and remain on the support. Proper coloration produces visible images. If the support is a metallized layer, then the metal can be removed from the unexposed areas by recording after exposure and development, or it can be reinforced by electrocoating. Printed electronic circuits can be produced in this way.

The photosensitivity in the compositions according to the invention generally fluctuates from about 200 nm to about nm (UV range). Suitable radiation comprises, for example, sunlight or artificial light sources. Therefore, a large number of very different types of light types can be used. Point sources and flat radiators (lamp mats) are suitable. Examples are: carbon arc lamps, xenon arc lamps, medium pressure, high pressure or low pressure mercury lamps, optionally contaminated with metal halides (halogen and metal lamps), stimulated metal vapor lamps, by micro-wavelengths, excimer lamps, superactinic fluorescent tubes, fluorescent lamps, incandescent argon lamps, portable lamps, high-intensity photographic lamps, light-emitting diodes (LEDs), electron beams and X-rays. The distance between the lamp and the substrate to be exposed according to the invention may vary depending on the intended use and the type and intensity of the lamp, for example between 2 cm and 150 cm. Of particular suitability are laser light sources, for example excimer lasers, such as krypton F lasers for 248 nm exposure. It is also possible to use lasers in the visible region. Using this method it is possible to produce printed circuits in the electronics industry, plates lithographic printing for offset or relief printing plates, and also photographic image recording materials. The invention therefore also provides a process for the photopolymerization of monomeric, oligomeric or non-volatile polymeric compounds having at least one ethylenically unsaturated double bond, which comprises irradiating a composition as described above with light in the range of 200 to 600. nm. The invention also provides the use of the compounds of formula II or III as photoinitiators for the photopolymerization of monomeric, oligomeric or non-volatile polymeric compounds having at least one ethylenically unsaturated double bond by irradiation with light in the range of 200 to 600 nm. The invention also provides the use of the composition described above or a process for the preparation of pigmented and non-pigmented surface coatings, printing inks, for example screen printing inks, offset printing inks, flexographic printing inks, coatings in powder, printing plates, adhesives, dental compositions, optical waveguides, optical switches, color test systems, composite materials, fiberglass cable coatings, screen printing stencils, protective materials, color filters, use for encapsulation of electrical and electronic components, for the production of magnetic recording materials, for three-dimensional objects using stereolithography, for photographic reproductions, and for use as image recording material, in particular for holographic records, for bleaching materials, for bleaching materials for materials for recording images, for materials for recording images using microcapsules. The invention likewise provides a coated substrate which has been coated on at least one surface with a composition as described above, and also a process for the photographic production of relief images in which a coated substrate is subjected to exposure of images and then the unexposed portions are removed with a solvent. The exposure of the image can be carried out via a mask or by means of a laser beam. Of particular interest here is the exposure by means of a laser beam. The following examples illustrate the invention in greater detail, although the invention is not intended to be limited to the examples. Unless otherwise stated, the parts and percentages were based, as in another part of the description and claims in the weight. Whose reference is made to alkyl or alkoxy radicals having more than three carbon atoms without mentioning the isomer, then n-isomers are always intended.

Example 1 Oxide of 2,4,6-Trimethylbenzoyliso-butylphenylphosphine. At -20 ° C, 40 ml (0.064 mol) of butyl-1.6 M was added dropwise to 9.5 g (0.058 mol) of isobutylphenylphosphine in 100 ml of tetrahydrofuran (THF). At the same temperature, 11.7 g (0.064 mol) of 2,4,6-trimethylbenzoyl chloride was then added dropwise. After allowing the mixture to warm to room temperature, the orange reaction suspension was concentrated using a rotary evaporator (Rotavap). The residue was taken up in 150 ml of toluene, and stirred with 13.1 g (0.116 mol) of 30% hydrogen peroxide. After the mixture was stirred for 2 hours at 20-30 ° C, the reaction was complete. The reaction emulsion was poured into water and washed with saturated aqueous sodium hydrogen carbonate solution, then dried over magnesium sulfate and filtered. The filtrate was concentrated using the Rotavap. The residue was purified on silica gel and dried under a high vacuum. 11.8 g of the title compound were obtained as a yellow viscous oil. 31P-NMR: d 28.94 ppm ^ -RMN, measured at CDC13, d [ppm]: 7.37-7.79 (m), 6.70 (s), 1.98-2.23 (m), 1.93 (s) and 0.87-1.02 (c) EXAMPLE 2 2, 4, 6-Trimethylbenzoyl- (2,4,4-trimethylpentyl) phenylphosphine oxide The compound was prepared analogously to the method described in Example 1, but using 2,4,4-trimethylpentylphenylphosphine instead of isobutylphenylphosphine . 31 P-NMR: d 28.86 ppm ^ -H-NMR, measured in CDC13, d [ppm]: 7.37-7.80 (m), 6.69 (s), 2.01-2.45 (m), 1.93-1.94 (d), 0.91- 1.43 (m) and 0.71-0.80 (d) Example 3 Lithium (2, 4,6-trimethylbenzoyl) phenylphosphine Under argon and with the exclusion of moisture, 14.0 g of lithium (2.0 mol) in 250 ml of tetrahydrofuran were introduced at room temperature. After the addition of 1.25 g of naphthalene, 44.8 g were added dropwise (0.25 mol) of dichlorophenylphosphine with stirring at 20-25 ° C and, after stirring for 4 h, the black solution was filtered in a three-neck spherical flask through a frit.

(Porosity G2) with the exclusion of moisture and under argon as a protective gas. 47.2 g (0.258 mol) of 2,4,6-trimethylbenzoyl chloride were added dropwise at room temperature over the course of 30 minutes with stirring and cooling.

Stirring for 2 hours gives the title compound as a red solution in tetrahydrofuran. 31 P-NMR d 98.4 ppm.

Examples 4-5 The compounds of Examples 4 and 5 were obtained analogously to the method described in Example 3 using the corresponding starting materials. The compounds and their spectroscopic data are given in Table 1 below.

Table 1 Example 6 2,4,6-Trimethylbenzoylphenylphosphine 35 ml (0.022 mol) of the solution described in Example 3 were added dropwise to a toluene / water mixture and acetic acid. The organic phase was separated, dried over magnesium sulfate and dried using Rotavap under argon. The sample was distilled at 200 ° C and 0.02 mbar by Kugelrohr distillation. The title compound was obtained as a yellow viscous oil. 31P-NMR at: -1.0 ppm XH-NMR, measured at C6D6, • [ppm]: 2.05 (s), 2.14 (s), 4.82 (s) + 5.61 (s) (1H over P), 6.55 (s) ), 7.04 (m), 7.40 (m).

EXAMPLE 7 2, 4, 6-Trimethylbenzoyl- (2,6-dimethoxybenzoyl) phenylphosphine oxide 4.4 g (0.022 mol) of sodium chloride. 2,6-dimethoxybenzoyl, dissolved in 20 ml of tetrahydrofuran, were added dropwise during curing for 20 minutes to 35 ml (0.022 mol) of the solution obtained according to Example 3 at 20-30 ° C. After stirring the mixture for 2 hours, the orange reaction suspension was concentrated using the Rotavap. The residue was taken up in 50 ml of toluene, and treated with 5.7 g (0.05 mol) of 30% hydrogen peroxide. After the mixture has been stirred for 2 hours at 20-30 ° C, the reaction is complete. The emulsion was purified over water and washed with saturated aqueous sodium hydrogen carbonate solution and then dried over magnesium sulfate and filtered. The filtrate was concentrated using the Rotavap. The residue was purified on silica gel and dried under a high vacuum. 1.5 g of the title compound were obtained as a yellow solid with a melting point of 126-127 ° C. 31P-NMR d 6.89 ppm ^ -RMN, measured at CDC13, [ppm]: 7.33-8.05 (m), 6.82 (s), 6.50- 6.53 (d), 3.60 (s), 2.27 (s) and 2.18 (s) ) Examples 8-49 The compounds of Examples 8 to 49 were obtained analogously to the method described in Example 7 using the corresponding starting materials. The compounds and physical data are given in Table 2.

Table 2 XH-NMR measured in CDC13 Example 50: Oxide of 2,4,6-trimethylbenzoylbenzylphenylphosphine At 20-30 ° C, 8.5 g (0.05 mol) of benzyl bromide was added dropwise over the course of 20 minutes to 35 ml (0.022 mol) of the solution obtained from according to Example 3. After the mixture had been stirred for 2 hours, the orange reaction suspension was concentrated using the Rotavap. The residue was taken up in 50 ml of toluene, and treated with 5.7 g (0.05 mol) of 30% hydrogen peroxide. After stirring the mixture for 2 hours between 20-30 ° C, the reaction is complete. The reaction emulsion was poured into the water and washed with saturated aqueous sodium carbonate solution, then dried over magnesium sulfate and filtered. The filtrate was concentrated using the Rotavap. The residue was purified on silica gel and dried under a high vacuum. 1.4 g of the title compound was obtained as a yellow solid with a melting point of 113-114 ° C. 31P-NMR d 26.26 ppm XH-NMR, measured in CDC13, [ppm]: 7.16-7.83 (m), 6.63 (s), 3.43-3.88 (m), 2.13 (s) and 1.66 (s) Examples 51-60 The compounds of Examples 51-60 were prepared analogously to the method described in Example 50 using the corresponding starting materials. The compounds and their physical data are given in Table 3.

Table 3 EXAMPLE 61 2, 4, 6-Trimethylbenzoyl- (5-trifluoromethyl) pyrid-2-ylphenylphosphine Oxide At 20-30 ° C, 4.0 g (0.022 mol) of 2-chloro-5-trifluoromethylpyridine, dissolved in water, were added dropwise. 20 ml of tetrahydrofuran, over the course of 20 minutes to 35 ml (0.022 mol) of the solution obtained according to Example 3. After the mixture had been stirred for 2 hours, the orange reaction suspension was concentrated using the Rotavap. The residue was taken up in 50 ml of toluene, and treated with 5.7 g (0.05 mol) of 30% hydrogen peroxide. After the mixture has been stirred for 2 hours at 20-30 ° C, the reaction is complete. The reaction emulsion was poured into water and poured into saturated aqueous sodium hydrogen carbonate solution and then dried over magnesium sulfate and filtered. The filtrate was concentrated using the Potavap. The residue was purified on silica gel and dried under a high vacuum. 1.5 g of the title compound was obtained as a yellow resin. 31P-NMR: d 10.42 ppm ^ -RMN, measured at CDC13, d [ppm]: 8.98 (s), 7.37-8.14 (m), 6. 69 (s), 2.15 (s) and 2.01 (s) Examples 62-63 The compounds of Examples 62 and 63 were obtained analogously to the method described in Example 61 using the corresponding starting materials, compounds and physical data are given in Table 4.

Table 4 benzoyl) thiophosphonic. At 20-30 ° C, 4.8 g (0.025 mol) of 4-toluenesulfonyl chloride, dissolved in 20 ml of toluene, was added dropwise during the. course of 20 minutes at 35 ml (0.025 mol) of the solution described in Example 3. The yellow-brown reaction suspension was heated to 40 ° C and, after having stirred the mixing for 2 hours, concentrated using the Rotavap. The residue was taken up in 50 ml of toluene and washed with water and saturated aqueous sodium hydrogen carbonate solution, then dried over magnesium sulfate and filtered. The filtrate was concentrated using the Rotavap. The residue was purified on silica gel and dried under a high vacuum. The title compound was obtained as a yellow resin.

HL NMR: 7.80-7.86 (m), 7.31-7.48 (m), 6.96-6.99 (d), 6.67 (s), 2.21 (s), 2.13 (s), 1.84 (s) Example 65 A white UV curable coating was prepared by mixing 67.5 parts of polyester acrylate oligomer (EBECRILMR 830, ÜCB, Belgium) 5.0 parts of hexanediol diacrylate 2.5 parts of trimethylolpropane triacrylate 25.0 parts of rutile titanium dioxide (R-TC2MR, Tioxide, France) 2.0 parts of photoinitiator of Example 7. The coating was applied to an aluminum sheet spirally coated using a 100 μm slotted doctor blade and then cured. The curing was carried out by transporting the sample twice, on a conveyor belt moving at a speed of 10 m / min, under a medium pressure mercury lamp, 80 cm (Hanovia, USA). The pendulum hardness was then determined according to Kónig (DIN53157) in [s]. The pendular hardness is a measure of the total curing of the composition. At higher values, the curing more effective has been carried out. A value of 161. was reached. After the first determination of the pendular hardness, the sample was subsequently exposed under low pressure mercury lamps of type TL 40/03 (Philips, maximum emission of 430 nm), after 15 minutes the pendular hardness was determined again. After the subsequent exposure, a value of 181 was obtained.

Example 66 Two parts of the compound according to Example 65 were incorporated in place of the photoinitiator compound of compound 7 in a photocurable formulation described as in Example 58, and the formulation was applied to a helically coated aluminum sheet as described in Example 65 The curing was carried out by transporting the mixture 4 times, on a conveyor belt which moved at a speed of 10 m / min, under a medium pressure mercury lamp of 80 W / cm (Hanovia, USA). The yellowness index of the cured sample was determined in this manner in accordance with ASTMD 1925-88. A value of 2.0 was obtained.

Claims (20)

CLAIMS why
1. Ar is a group cyclohexyl, naphthyl, biphenylyl, anthracyl, or a 5- or 6-membered heterocyclic ring containing O, S, or N, wherein the cyclopentyl, cyclohexyl, naphthyl, biphenylyl, anthracyl, or 5- or 6-membered heterocyclic ring containing O, S or N are unsubstituted or substituted by halogen, C? -C alkyl and / or C? -C alkoxy; Ri and R2 independently from each other are C?-C2o alkyl, ORn, CF3 or halogen; R3, R4 and R5 independently of one another are hydrogen, C? -C20 alkyl, ORn or halogen; or in each case that two of the radicals Ri, R2, R3, R4 and / or R5 together form alkylene of C? -C2o, which may be interrupted by O, S or NRi4; R6, R7, R8, R9 and io independently of one another are hydrogen, C? -C20 alkyl; C2-C2o alkyl which is interrupted once or more than once by non-consecutive O atoms and which may be substituted by OH and / or SH; or R6, R, R8, R_ and Rio are'ORn, phenyl or halogen; R 11 is hydrogen, C 1 -C 20 alkyl, C 2 -C 2 alkenyl, C 3 -C 8 cycloalkyl, phenyl, benzyl or C 2 -C 2 alkyl which is interrupted once or more than once by 0 or S and which is not is substituted by or is substituted by OH and / or SH; R? 4 is hydrogen, phenyl, C? -C? 2 alkyl or C2-C alkyl? which is interrupted once or more than once by O u S and which may be substituted by OH and / or SH; and M is hydrogen, Li, Na or K.
2. 2. A compound of formula II (II), characterized in that is O u S; X is O or 1; Ar is a group Ar is cyclopentyl, cyclohexyl, naphthyl, biphenylyl, anthracyl, or a 5 or 6 membered heterocyclic ring containing 0, S, or N, wherein the cyclopentyl, cyclohexyl, naphthyl, biphenylyl, anthracyl, or 5 or 6 membered heterocyclic ring containing 0, S or N are unsubstituted or substituted by halogen, C? -C alkyl and / or C? -C4 alkoxy; Ri and R2 independently from each other are C?-C 20 alkyl, ORu, CF 3 or halogen; R3, 4 and R5 independently of one another are hydrogen, C?-C2o alkyl, ORu or halogen; or in the case that two of the radicals Ri, R2, R3, R4 and / or R5 together form alkylene of C? -C2o which may be interrupted by O, S or NRX4; R6, R7, Ra, R9 and Rio independently of each other are hydrogen, C? -C2alkyl; C2-C20 alkyl, which is interrupted once or more than once by non-consecutive O atoms and which may be substituted by OH and / or SH; or R6 / R7, R8, R9 and R10 are ORn, phenyl or halogen; R 11 is hydrogen, C 1 -C 2 alkyl, C 2 -C 2 alkenyl, C -CB cycloalkyl, phenyl, benzyl or C 2 -C 20 alkyl which is interrupted once or more than once by non-consecutive O atoms and which is not substituted or substituted by OH and / or SH; i is C? -C? alkyl which is unsubstituted or substituted by one or more of phenyl; Ci-Ciß alkyl halide, "C 2 -C 8 alkyl which is interrupted once or more than once by 0 uS and which is unsubstituted or substituted by OH and / or SH; cycloalkyl of C3- Unsubstituted C? 8 or CC? 8 cycloalkyl is substituted by C? -C2o alkyl, ORn, CF3 or halogen, C2-C18 alkenyl, naphthyl, biphenylyl, anthracyl or a 5- or 6-membered heterocyclic ring containing O , S or N, where the naphthyl, biphenylyl, anthracyl radicals or the 5- or 6-membered heterocyclic ring containing O, S or N is unsubstituted or unsubstituted by halogen, C? -C alkyl and / or C-alkoxy? ~ C4; Y2 is a direct bond, Ci-Ciß alkylene is optionally substituted by phenyl; unsubstituted C 4 -C 8 cycloalkylene or C 4 -C 8 cycloalkylene substituted by C 1 -C 2 alkyl, OR n, halogen and / or phenyl; unsubstituted C5-C? 8 cycloalkenylene or Cs-C18 cycloalkenylene substituted by C? -C12 alkyl, ORn, halogen and / or phenyl; unsubstituted phenylene or phenylene -substituted one to four times by C 1 -C 12 alkyl, OR n, halogen, - (CO) 0X, - (CO) N (R 12) (R 13) and / or phenyl; one to four times on one or both aromatic rings by C? -C? 2 alkyl, ORn, halogen and / or phenyl; Y3 is O, S, SO, S02, CH2, C (CH3) 2, CHCH3, C (CF3) 2, (CO), or a direct bond; RIA and R-? 3 independently of one another are hydrogen, C? -C20 alkyl, C3-C8 cycloalkyl, phenyl, benzyl or C2-C2 alkyl which is interrupted once or more than once by O or S and which is or is not replaced by OH and / or SH; or R1 and Ri3 together are C-C5 alkylene which may be interrupted by O, S or NRi4; Ri4 is hydrogen, phenyl, C? -C12 alkyl or C2-C alkyl? which is interrupted once or more than once by O u S and which is not substituted or substituted by OH and / or SH; Ri 'and R2' independently of each other have the same meanings as were given for Ri and R2; and R3 ', R_' and R5 'independently of each other have the same meanings as were given for R3, R4 and R5; with the condition of if Y, it's a naphthyl radical, biphenylyl, anthracyl, or a 5- or 6-membered heterocyclic ring containing O, S, or N, these are not identical to the other benzoyl group on the phosphorus atom.
3. 3. A compound of formula III III), characterized because is O u S; x is 0 or 1; Ar is a group Ar is cyclopentyl, cyclohexyl, naphthyl, biphenylyl, anthracyl, or a 5- or 6-membered heterocyclic ring containing O, S, or N, where the cyclopentyl, cyclohexyl, naphthyl, biphenylyl, anthracyl, or 5 or 6 membered heterocyclic ring containing 0 , S or N is or is not substituted, by halogen, C? -C alkyl and / or C? -C alkoxy; R and R2 independently from each other are CI-C2Q alkyl, ORn, CF3 or halogen; R3, R and R5 independently of each other are hydrogen, C? -C0 alkyl, ORn or halogen or in the case where two of the radicals Ri, R2, R3, R4 and / or R5 together form an alkylene of C? C2o which may be interrupted by O, S or NR14; R6, R7, R8, R9 and R10 independently of each other are hydrogen, "C2-C2 alkyl, C2-C20 alkyl which is interrupted once or more than once by non-consecutive 0 atoms and which is either not substituted by OH and / or SH, or Rβ, R?, Rβ, Rg and Rio are ORn, - halogen or unsubstituted phenyl or phenyl substituted one or more times by C? -C4 alkyl; Rn is hydrogen, Ci-C20 alkyl, C2-C2 alkenyl, C3-C8 cycloalkyl, phenyl, benzyl or C2-C2Q alkyl which is interrupted once or more than once by non-consecutive O atoms and which is not substituted or substituted by OH and / or SH; Zi is C? -C24 alkyl which is unsubstituted or substituted once or more than once by OR15, SR15, N (Ri6. (R17), phenyl, halogen, CN, NCO, - TO II -C-OR18 , and / or -C-N (R18) 2; or Zi is C2-C2 alkyl which is interrupted once or more than once by O, S or. NRi4 and which is not or is not substituted by OR15, SR15, N (R? 6) (R17), _A A A II II phenyl, halogen, -C-CH2, -C-R18, -C-OR18 and / or H C-N (R18),; or Zi is C? -C2 alkoxy, which is substituted once or more than once by phenyl, CN, NCO, A A A, A II -C-R 18 'C-OR, and / or -C-N (R1 1β8)' 2 Zi is -C-OR 11 ' or Zi is unsubstituted C3-C24 cycloalkyl or C3-C24 cycloalkyl substituted by C? -C20 alkyl, ORn, CF3 or halogen; unsubstituted C2-C24 alkenyl or C2-C24 alkenyl substituted by C6-C2 aryl, CN, (CO) 0R? 5 or (C0) N (R? 8) 2; or Zx is C3-C24 cycloalkenyl or is one of the radicals C 1 -C 2 alkylthio, in which the alkyl radical is not interrupted or interrupted once or more than once by 0 or non-consecutive S,. and is unsubstituted or substituted by OR15, SR15 and / or halogen; Ai is 0, S or NR? 8a; Z2 is C? -C24 alkylene; C2-C24 alkylene interrupted once or more than once by 0, S, or NRi4; C2-C2 alkenylene; C2-C24 alkenylene interrupted once or more than once by O, S, or NR? 4; C3-C24 cycloalkylene; C-C2 cycloalkylene. interrupted once or more than once by O, S, or NR? 4; C3-C24 cycloalkylene; C3-C24 cycloalkenylene interrupted once or more than once by 0, S, or NR? 4; where the alkylene radicals of C? -C2, C2-C24 alkylene, C2-C24 alkenylene, C3-C2 cycloalkylene. and C3-C24 cycloalkenylene are unsubstituted or substituted by ORn, SRn, N (R? 2) (R? 3) and / or halogen; or Z2 is one of the radicals or where those radicals are not substituted or substituted on the aromatic ring by C 1 -C 2 alkyl; C2-C2o alkyl which is interrupted once or more than once by non-consecutive O atoms and which is or is not substituted by OH and / or SH; ORu, SRn, N (Ri2) (R? 3), phenyl, halogen, N02, CN, (CO) -OR18, (CO) -R18, (C0) -N (R? S.2, S02R24, OS02R24, CF3 and / or CC13; or Z2 is a group (r) Z3 is CH2, CHCH3 or C (CH3) 2; Z4 is S, 0, CH2, C = 0, NRi4 or a direct bond; Z5 is S, 0, CH2, CHCH3, C (CH3) 2, C (CF3) 2, CO, SO, S02; Z6 and Z? independently of each other are CH2, CHCH or C (CH3) 2; r is 0, 1 or 2; s is a number from 1 to 12; q is a number from 0 to 50; t and p are each a number from 0 to 20; E, G, G3 and G independently of each other are unsubstituted C? -C? 2alkyl or the C1-C12alkyl is substituted by halogen, or are unsubstituted phenyl or phenyl substituted by one or more C? C4; Rila is C 1 -C 20 alkyl substituted one or more O at one time by OR 15, halogen or C 1 -C 2; or is C2-C2o alkyl H interrupted once or more than once by non-consecutive 0 atoms and which is optionally substituted once O or more than once by OR15, halogen or -C ~ CH2; or is C2-C2a alkenyl H or C3-C2 alkynyl; or is C 3 -C 2 cycloalkyl substituted once or more than once by Ci-Cβ alkyl or halogen; or is C6-C2 aryl optionally substituted once or more than once by halogen, N02, Ci-Ce alkyl, ORn or C (0) 0R? 8; or is C7-Ci6 arylalkyl or C8-Ci6 arylcycloalkyl, * R1 is hydrogen, phenyl, C? -C? 2 alkoxy, C1-C12 alkyl or C2-C alkyl? which is interrupted once or more than once by 0 or S and which is not substituted or substituted by OH and / or SH; . s has one of the meanings given for Rn or A A II, is a radical -C-R, -C-OR, -C-N (R1 1B8) '2 Rie and R-17 independently of each other have one of the meanings given for R 2 or are a radical A A A. II II II 1 C-R 18, C-OR 18 or C-N (R 1 β) 2; Ris is hydrogen, C 1 -C 24 alkyl, C 2 -Ci 2 alkenyl, C 3 -C 8 cycloalkyl, phenyl, benzyl; C2-C2o alkyl which is interrupted once or more than once by O u S and which OH is or is not substituted; R-ißa and Ri8b independently of each other are hydrogen, C?-C2o alkyl which is substituted once or more than once by OR15, halogen, styryl, methylstyryl, O-N = C = A or -C-CH2; or are C2-C2alkyl which is H interrupted once or more than once by non-consecutive O atoms and which is optionally substituted once or more than once by OR15, halogen, styryl, methylstyryl or O -C-CH2; or are C2-C2 alkenyl; or are they cycloalkyl of H C5-C1? substituted by -N = C = A or -CH2-N = C = A and optionally additional once or more than once substituted by C? -C4 alkyl; or are Cß-Ci aryl? optionally substituted once or more than once by halogen, N02, C? -C6 alkyl, C2-C4 alkenyl, ORn, -N = C = A, -CH2-N = C = A or C (0) OR ? 8; or are C7-C16 arylalkyl; or both groups R? 8a and Risb together are C 8 -C 6 arylcycloalkyl; or R? 8a and R? 8b ° Y3 is O, S, SO, S02, CH2, C (CH3) 2, CHCH3, C (CF3) 2, (CO), or a direct bond; R19, R2o, R2 ?, R22 and R23 have one of the given meanings for R6 or are N02, CN, S02R24, 0S02R24, CF3, CC13 or halogen; R 24 is C 1 -C 2 alkyl, C 1 -C 2 alkyl substituted by halogen, phenyl, or phenyl substituted by OR 15 and / or SR 5; with the condition of if Zi is a radical identical to the other aromatic radical R8 on the phosphorus atom,
4. 4. A compound of formula I, II or III, what R 1 and R 2 independently of each other are C 1 -C 4 alkyl, C 1 -C 4 alkoxy or halogen; R-3, and R-5 independently of one another are hydrogen or C 1 -C 4 alkyl; R6, R7, R8 / Rg and Rio are hydrogen, C? -C4 alkyl, ORj.? or phenyl; R n is C 1 -C 4 alkyl, C 2 -C 8 alkenyl or benzyl; M is hydrogen or Li; A is 0 u S; x is 1; Yi is C? -C4 alkyl which is unsubstituted or substituted by one or more of phenyl; or Yi is naphthyl, anthracyl, 0Rn, N (R? 6) (R17), 0RUa, N (R18a) (Rißb). Y 2 is not substituted by phenylene or phenylene substituted one to four times by C 1 -C 4 alkyl; Ri 'and R-2' independently have the same meanings that were given for Ri and R2; and R3 ', R_' and R5 'independently of each other have the same meanings as were given for R3, R4 and R5; with the condition of if it is a naphthyl radical anthracyl, this is not identical to the other benzoyl group on the phosphorus atom; i is C1-C12 alkyl; C-C4 alkyl which A II is substituted by phenyl, halogen or -C-OR18; or Zi is unsubstituted C2-C8 alkenyl or C2-C8 alkenyl substituted by C6-C2 aryl, CN, (CO) OR? 5 or (CO) N (R? 8) 2 or is with the proviso that if Zi is a radical identical to the other aromatic radical phosphorus atom; Z3 is CH2; Z4 is S; r is 0; s is a number from 1 to 4; q is a number from 0 to 4; E, G, G3 and G4 independently of each other are unsubstituted C1-C4 alkyl or are C? -C alkyl substituted by chloro; Rila is C 1 -C 8 alkyl, substituted by OR 15, O halogen or -C-CH 2; or is C2-C6 alkenyl, C3-C6 H cycloalkyl or C7-C12 arylalkyl; or is C 6 -C 0 aryl optionally substituted once or more than once by C 1 -C 4 alkyl; R 15 is C 1 -C 8 alkyl or (CO) Ri 8; i6 and R17 independently of one another are hydrogen, C?-C8 alkyl; C2-C2 alkenyl, C3-C6 cycloalkyl, phenyl or benzyl; or R and R17 together are C3-C5 alkylene optionally interrupted by 0, S or NR? _; Ris is C? -C8 alkyl or C? -C8 alkenyl; Risa and Risb independently of one another are alkyl O of Ci-Cs, substituted by OR15, halogen, -N = C = A or -C-CH.; or H 2 are C 2 -C 8 alkenyl; or are C5-C12 cycloalkyl substituted by -N = C = A or -CH2-N = C = A and optionally further substituted once or more than once by methyl; or are aryl of Cd-Cio optionally substituted by C? -C alkyl and / or -N = C = A; or are C7-C2 arylalkyl; i9, R2o, R21, R22 and R23 are hydrogen, CF3, CC13 or halogen.
5. 5. The process for the selective preparation of the compounds of the formula I, according to claim 1, characterized by (1) reacting an acyl halide of the formula IV "O Ar-C-X (IV), in which Ar is as defined in claim 1, and X is Cl or Br; with a dimetallized arylphosphine of the formula V R6, R7, R8, Rg and Rio are as defined in claim 1; and Mi is Na, Li or K; in the molar ratio of 1: 1; and (2) where appropriate, the subsequent hydrolysis, if the compounds of the formula I in which M is hydrogen were obtained.
6. 6. The use of the compounds of the formula I as initial scrubbers for the preparation of mono- or bisacylphosphines, mono- or bisacylphosphine oxides or mono- or bisacylphosphine sulfides.
7. 7. A process for the preparation of the compounds of the formula II according to claim 2 characterized by (1) the reaction of an acyl halide of the formula IV OR II Ar-C-X (IV), in which, Ar is as defined in claim 2, and X is Cl or Br; with a dimetallized arylphosphine of the formula V R6, R7, R8, R9 and Rio are co or defined in claim 2; and Mi is Na, Li or K; in the molar ratio of approximately 1: 1; (2) the subsequent reaction of the product with an acyl halide of the formula IVa OR AND U? (IVa), in which Yi is as defined in claim 2; and X is as defined above; with the proviso that the acyl halide of the formula IV is not identical to the acyl halide of the formula IVa; in the molar ratio of approximately 1: 1; and (_) if the compounds of the formula II in which A is oxygen or sulfur, the subsequent oxidation or thionation of the resulting phosphine compounds were obtained.
8. 8. A process for the preparation of the compounds of the formula II in which A is oxygen and X is 1, characterized by (1) the reaction of a compound of the formula (I) according to claim 1 Ar, M, e, R7, R8, R9 and Rio are as defined in claim 1, with phosgene to give the corresponding phosphine chloride (Ii) (2) the subsequent reaction with an alcohol to give the compound of the formula (Iii) R is the radical of an alcohol; and (3) the reaction of the resulting compound of the formula (Iii) with an acyl halide Yi is as defined in claim 2, but is not identical to Ar of the formula (I) and X is Cl or Br, to give the compound of the formula II.
9. 9. A process for the preparation of compounds of formula III, characterized by (I) the reaction of an acyl halide of formula IV Or Ar- -c II-x (IV), in which Ar is as defined in claim 3, and X is Cl or Br; with a dimetallized arylphosphine of the formula V R6, R7, R8, R9 and Rio are co-defined in claim 1; and Mi is Na, Li or K; in the molar ratio of approximately 1: 1; (2) the subsequent reaction of the product with a compound of the formula VI Zi-X (VI), in which Zi is as defined in claim 3, with the exception of groups (v), (w) and alkylthio of C? -C24; and X is as defined above; with the proviso that, if Zi is a radical this radical is not identical to the radical of the formula V; in the molar ratio of approximately 1: 1; and, (3) if the compounds of formula III in which A is oxygen or sulfur were obtained, the subsequent oxidation or thionation of the resulting phosphine compounds.
10. 10. The process for the preparation of the compounds of the formula III, according to claim 3, wherein Zi is C? -C24 alkyl, characterized by (1) the reaction of an acyl halide of the formula IV O ^ U? (IV), in which Ar is as defined in claim 3, and X is Cl or Br; with an asymmetric phosphine of formula VII R6, R7, R8, Rg and Rio are as defined in claim 1, and Zi 'is C? -C24 alkyl; in the molar ratio of approximately 1: 1, in the presence of a base, to give the corresponding acylphosphine; and (2) the subsequent oxidation or thionation of the acylphosphine thus obtained.
11. 11. A process for the preparation of compounds of the formula III in which A is oxygen and x is 1, characterized by (1) the reaction of the compound of the formula (I) according to claim 1 Ar, M, R6, R7, R8, R and Rio are as defined in claim 3, with phosgene to give the corresponding phosphine chloride (Ii) (2) the subsequent reaction with an alcohol to give the compound of the formula (Iii) R is the radical of an alcohol; and (3) the reaction of the resulting compound of the formula (Iii) with an organohalide Z? -X, in which Zi is as defined in claim 3, but is not identical to Ar of the formula (I), and X is Cl or Br, to give the compound of formula III.
12. 12. A photocurable composition, characterized in that it comprises (a) at least one photopolymerizable ethylenically unsaturated compound and (b) at least one compound of formula II or III as photoinitiator.
13. 13. The photocurable composition according to claim 12, characterized in that it comprises, in addition to components (a) and (b), additional photoinitiators (c) and / or additional additives (d). The photocurable composition according to claim 13, characterized in that it comprises, as additional photoinitiator (c), at least one compound of the formula VIII, IX, X, XI O II or II R 34 - P - C - R3 (X) R33 R36 R39 ~ "P" R37 [XI) in which R, 38 R25 is hydrogen, C? -Ci8 alkyl, C? -C18 alkoxy, -OCH2CH2-029, morpholino, SCH3, a group H2C = n has a value of 2 to 10; Gi and G2 independently of each other are final groups of the polymer unit, in particular hydrogen or CH3; R 26 is hydroxyl, C 1 -C 6 alkoxy, morpholino, dimethylamino or -O (CH 2 CH 20) m-Ci-Ciß alkyl, "R 27 and R 28 independently of each other are hydrogen, Ci-Cß alkyl, phenyl, benzyl, C 1 -C 6 alkoxy or -O (CH 2 CH 20) m C 1 -C 6 alkyl, or R 27 and R 28 together with the carbon atom to which they are attached form a cyclohexyl ring; 1-20, where R2S, R2 and R28 are not all alkoxy of O -C0o -0 (CH2CH20) m-C? -C6 alkyl at the same time, and OOCH, R2g is hydrogen, -C-CH = CH. Or -CC = CH. R30 and R32 independently of one another are hydrogen or methyl; R3? is hydrogen, methyl or phenylthio, wherein the phenyl ring of the radical is or is not substituted by C 1 -C 4 alkyl at the 4-, 2-, 2,4- or 2,4,6-position; R 33 and R 34 independently of one another are C 1 -C 20 alkyl, cyclohexyl, cyclopentyl, phenyl, naphthyl or biphenyl, wherein these radicals are unsubstituted or substituted by halogen, C 1 -C 12 alkyl and / or C 1 -C 12 alkoxy, or R33 is a 5- or 6-membered heterocyclic ring containing S or N, O or they are II C-R, R35 is cyclohexyl, cyclopentyl, phenyl, naphthyl or biphenyl, said radicals being unsubstituted or substituted by halogen, C? -C4 alkyl and / or C? -C4 alkoxy, or R35 is a 5- or 6-membered heterocyclic ring contains S or N; R3e and R37 independently of each other are unsubstituted cyclopentadienyl or cyclopentadienyl substituted once, two or three times by C? -C? 8 alkyl, C? -C? 8 alkoxy, cyclopentyl, cyclohexyl or halogen; and R8 and R39 independently of one another are phenyl which is substituted in at least one of the two ortho positions "in relation to the titanium-carbon bond by fluorine or CF3 atoms, and which, on the aromatic ring, may contain, as additional substituents, unsubstituted pyrrolinyl or pyrrolinyl substituted by one or two C 1 -C 12 alkyl, di (C 1 -C 12 alkyl) aminomethyl, morpholinomethyl, C 2 -C alkenyl, methoxymethyl, ethoxymethyl, trimethylsilyl, formyl, methoxy or phenyl; or polyoxaalkyl, R40, R41 and R42 independently of each other are hydrogen, halogen, C2-C2 alkenyl, C2-C2 alkoxy, C2-C2 alkoxy interrupted by one to four O atoms, cyclohexyloxy, cyclopentyloxy, phenoxy, benzyloxy, unsubstituted phenyl or phenyl substituted by C 1 -C 4 alkoxy, halogen, phenylthio or C 1 -C 4 alkylthio; or biphenyl, where Ro and • R_2 are not both hydrogen at the same time and in the radical at least one radical Ro or R 2 is C 1 -C 12 alkoxy, C 2 -C 2 alkoxy interrupted by one to four O atoms, cyclohexyloxy, cyclopentyloxy, phenoxy or benzyloxy; Ei is O, S or NR43; and R43 is C-C8 alkyl, phenyl or cyclohexyl. 15. The use of compounds of formulas II and III according to claim 2 or 3 as photoinitiators for the photopolymerization of monomeric, oligomeric or non-volatile polymeric compounds having at least one ethylenically unsaturated double bond, by irradiation with light in the Wavelength range from 200 to 600 nm. 16. A process for the photopolymerization of monomeric, oligomeric or polymeric compounds does not volatile having at least one ethylenically unsaturated double bond, characterized in that it comprises irradiating a composition according to claim 12 with light in the range of 200 to 600 nm. 17. The use of a composition according to claim 12 for the preparation of pigmented and non-pigmented surface coatings, printing inks, screen printing inks, offset printing inks, flexographic printing inks, powder coating, plates of printing, adhesives, dental materials, optical waveguides, optical switches, color test systems, composite materials, fiberglass cable coatings, screen printing stencils, protective materials, color filters, for the encapsulation of electrical and electronic components, for the preparation of magnetic recording materials, of three-dimensional objects by means of stereolithography, of photographic reproductions, image recording material, in particular for holographic records, for the preparation of bleaching materials, in particular bleaching materials for materials p for the registration of images, for the preparation of materials for the registration of images using microcapsules. 18. The process according to claim 16, characterized in that it serves for the preparation of pigmented and non-pigmented surface coatings, printing inks, screen printing inks, offset printing inks, flexographic printing inks, powder coating, printing plates, adhesives, dental materials, optical waveguides, optical switches, systems color testing, composite materials, fiberglass cable coatings, screen printing stencils, protective materials, color filters, for the encapsulation of electrical and electronic components, for the preparation of magnetic recording materials, of three-dimensional objects by means of stereolithography of photographic reproductions, image recording material, in particular for holographic records, for the preparation of bleaching materials, in particular bleaching materials for materials for the registration of images, for the preparation of materials for the registration of images; lizing microcapsules. 19. A coated substrate, characterized in that it has been coated on at least one surface with a composition according to claim 12. 20. A process for the photographic production of relief images, characterized in that a coated substrate in accordance with claim 19 is subjected to exposure by images and then the unexposed portions are removed with a solvent. SUMMARY OF THE INVENTION The compounds of the formula T Ri and R2 independently from each other are alkyl C1-C20, ORUJ. CF3 or halogen; R3, R4 and R5 independently of one another are hydrogen, C1-C20 alkyl, ORn or halogen; R ?, R7, R8, Rg and Rio independently of each other are hydrogen, C-C20 alkyl; C2-C20 alkyl which is interrupted once or more than once by non-consecutive 0 atoms and which is or is not substituted by OH and / or SH; or R6, R, R8, Rg and Rio are ORn, SRn, N (Ri2) (R13), phenyl or halogen; R n is C 1 -C 20 alkyl, C 3 -C 8 cycloalkyl, phenyl, benzyl or C 2 -C 2 alkyl which is interrupted once or more than once by O 2 S and which is unsubstituted or substituted by OH and / or SH; R1 and R13 independently of each other are hydrogen, C1-C20 alkyl, C3-C8 cycloalkyl, phenyl, benzyl or C2-C2alkyl which is interrupted once or more than once by non-consecutive O atoms and which are not is substituted or substituted by OH and / or SH; or R12 and R13 together are C3-Ca alkyls that may be interrupted by O, S or NRi4; R 14 is hydrogen, phenyl, C 1 -C 2 alkyl or C 2 -C 12 alkyl which is interrupted once or more than once by 0 uS and which is unsubstituted or substituted by OH and / or SH; and M is hydrogen, Li, Na or K; They are valuable intermediaries for the preparation of bisacylphosphine oxides and asymmetric monoacylphosphine oxides.