WO2003010156A1 - Procede de preparation de alpha-halogenoalkylarylcetones et de leurs produits intermediaires halogenes de type cetal cyclique - Google Patents
Procede de preparation de alpha-halogenoalkylarylcetones et de leurs produits intermediaires halogenes de type cetal cyclique Download PDFInfo
- Publication number
- WO2003010156A1 WO2003010156A1 PCT/FR2002/002458 FR0202458W WO03010156A1 WO 2003010156 A1 WO2003010156 A1 WO 2003010156A1 FR 0202458 W FR0202458 W FR 0202458W WO 03010156 A1 WO03010156 A1 WO 03010156A1
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- carbon atoms
- ketone
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- diol
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D317/00—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms
- C07D317/08—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3
- C07D317/10—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 not condensed with other rings
- C07D317/14—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 not condensed with other rings with substituted hydrocarbon radicals attached to ring carbon atoms
- C07D317/18—Radicals substituted by singly bound oxygen or sulfur atoms
- C07D317/22—Radicals substituted by singly bound oxygen or sulfur atoms etherified
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/56—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds
- C07C45/57—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds with oxygen as the only heteroatom
- C07C45/59—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds with oxygen as the only heteroatom in five-membered rings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
- C07C45/63—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by introduction of halogen; by substitution of halogen atoms by other halogen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D317/00—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms
- C07D317/08—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3
- C07D317/10—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 not condensed with other rings
- C07D317/14—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 not condensed with other rings with substituted hydrocarbon radicals attached to ring carbon atoms
- C07D317/16—Radicals substituted by halogen atoms or nitro radicals
Definitions
- the present invention relates to a process for the preparation of cyclic ketals and selectively monohalogenated and more particularly chlorinated ketones.
- the invention relates more particularly to a process for the preparation of intermediate products of the cyclic ketal type of ⁇ -haloalkylaryl ketones as well as ⁇ -haloalkylaryl ketones.
- Arylated and ⁇ -haloalkylated ketones are products used as synthesis intermediates in the preparation of agrochemicals.
- the Applicant makes it possible to avoid this drawback by proposing a process involving a halogen intermediate product of the cyclic ketal type.
- a first object of the invention is a process for the preparation of a cyclic ketal of an ⁇ -haloalkylaryl ketone, characterized in that an alkylaryl ketone is reacted with a sulfuryl halide, in the presence of an aliphatic diol capable of form with the carbonyl function, a cyclic ketal.
- Another subject of the invention is a process for the preparation of an ⁇ -haloalkylaryl ketone characterized in that the preparation of a cyclic ketal of an ⁇ -haloalkylaryl ketone is carried out by halogenation of an alkylaryl ketone with a halide of sulfuryl in the presence of an aliphatic diol capable of forming, with the carbonyl function, a cyclic ketal then the hydrolysis of the product obtained is carried out.
- alkylaryl ketone which can be represented by the fo
- Ri represents a hydrogen atom or one or more substituents, identical or different
- R 2 and R ⁇ are a hydrogen atom
- R and R 3 identical or different, represent an alkyl, cycloalkyl, aryl or arylalkyl group,
- number of substituents on a cycle is a number less than or equal to 5,
- two Ri groups placed on two vicinal carbon atoms can form together and with the carbon atoms which carry them a saturated, unsaturated or aromatic ring, having 5 to 7 atoms and optionally comprising a or more heteroatoms.
- the aromatic compound of formula (I) can carry one or more substituents.
- the nature of the substituents is not critical insofar as they do not interfere with the halogenation reaction of the process of the invention.
- n varies from 0 to 5 and is preferably equal to 1 or 2.
- Ri identical or different, represent a hydrogen atom or a substituent such as an alkyl, alkenyl, alkoxy, alkoxyalkyl, cycloalkyl, aryl, arylalkyl, aryloxy, acyloxy group, a nitro group, a halogen atom, a mono-, poly- or per-haloalkyl group.
- Ri groups placed on two vicinal carbon atoms can be linked to each other by an alkylene, alkenylene or alkenylidene group having from 3 to 5 carbon atoms to form a saturated, unsaturated or aromatic ring having from 5 to 7 atoms: a or several carbon atoms which can be replaced by a heteroatom, preferably oxygen
- alkyl means a linear or branched hydrocarbon chain having from 1 to 15 carbon atoms and preferably from 1 or 2 to 10 carbon atoms.
- alkenyl is meant a hydrocarbon group, linear or branched having from 2 to 15 carbon atoms, comprising one or more double bonds, preferably 1 to 2 double bonds.
- cycloalkyl is meant a cyclic hydrocarbon group, comprising from 3 to 8 carbon atoms, preferably a cyclopentyl or cyclohexyl group.
- aryl is meant an aromatic mono- or polycyclic group, preferably mono- or bicyclic comprising from 6 to 12 carbon atoms, preferably phenyl or naphthyl.
- arylalkyl is meant a hydrocarbon group, linear or branched carrying a monocyclic aromatic ring and comprising from 7 to 12 carbon atoms, preferably benzyl.
- acyl is meant a group of type R 4 -CO in which R 4 represents an alkyl group, linear or branched having from 1 to 12 carbon atoms.
- halogen is meant fluorine, chlorine, bromine or iodine.
- a hydrogen atom . an alkyl group, linear or branched, having from 1 to 6 carbon atoms, preferably from 1 to 4 carbon atoms, such as methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl,.
- a linear or branched alkoxy group having from 1 to 6 carbon atoms, preferably from 1 to 4 carbon atoms such as the methoxy, ethoxy, propoxy, isopropoxy, butoxy, isobutoxy, sec-butoxy, tert-butoxy, groups. a trifluoromethyl group,
- a halogen atom preferably a fluorine, chlorine or bromine atom.
- acetophenone 4-chlorophenylmethylketone and 4-methoxyphenylmethylketone.
- diol comprises an aliphatic hydrocarbon chain comprising a number of atoms sufficient to form the desired ketal function.
- the preferred compound used corresponds to formula (II):
- - m is a number ranging from 2 to 4
- - p is a number equal to 0 or 1
- - q is a number equal to 0 or m
- R 5 ⁇ R ⁇ identical or different, represent a hydrogen atom, a linear or branched alkyl group having from 1 to 10 carbon atoms, a phenyl group.
- a diol of formula (II) is preferably chosen in which m is equal to 2 or 3, p and q equal to 0 and R 5> R represent a hydrogen atom or an alkyl group having from 1 to 4 carbon atoms.
- R 5 , R ⁇ may carry substituents and reference may be made to the examples given for R 4.
- diols ethylene glycol or propylene glycol are used.
- halogenating agent it is chosen from sulfuryl chloride, sulfuryl bromide, sulfuryl chlorofluoride or any other equivalent. It is desirable that it has a sufficient purity of at least 95%.
- the substrate to be halogenated namely the alkylarylketone then called in a simplified manner, "ketone", the halogenating agent, the diol and the organic solvent.
- the amount of halogenating agent is such that the halogenating agent / ketone molar ratio is at least 0.5 and most often between 1 and 4. Said ratio is preferably chosen between 0.5 and 2.
- the diol its quantity is at least equal to the stoichiometry.
- the diol / ketone molar ratio is at least 1.
- the upper limit is in no way critical and values such as 10 can be reached or even exceeded. Most often, said ratio is preferably chosen between 3 and 5.
- the reaction can be carried out using the diol as organic solvent but according to a preferred variant of the invention, an organic solvent is added.
- organic solvent is such that it is inert with respect to the halogenating agent and its polarity is not decisive.
- aliphatic, cycloaliphatic or aromatic hydrocarbons Preferably, use is made of aliphatic, cycloaliphatic or aromatic hydrocarbons, halogenated or not.
- aliphatic hydrocarbons there may be mentioned more particularly paraffins such as in particular, hexane, cyclohexane, methylcyclohexane, aromatic hydrocarbons and more particularly aromatic hydrocarbons such as in particular benzene, toluene, xylenes , cumene, petroleum fractions consisting of a mixture of alkylbenzenes, in particular Solvesso®-type fractions.
- aliphatic or aromatic halogenated hydrocarbons there may be mentioned more particularly, aliphatic halogenated hydrocarbons and more particularly, perchlorinated hydrocarbons such as in particular tetrachloromethane, hexachloroethane; partially chlorinated hydrocarbons such as dichloromethane 1,2-dichloroethane; aromatic halogenated hydrocarbons such as monochlorobenzene, dichlorobenzenes and trifluoromethylbenzene.
- perchlorinated hydrocarbons such as in particular tetrachloromethane, hexachloroethane
- partially chlorinated hydrocarbons such as dichloromethane 1,2-dichloroethane
- aromatic halogenated hydrocarbons such as monochlorobenzene, dichlorobenzenes and trifluoromethylbenzene.
- the preferred solvents are dichloromethane and monochlorobenzene.
- this is not critical. It most often represents from 100 to 500% of the stoichiometric amount expressed relative to the ketone.
- the reaction is advantageously carried out at a temperature between 0 ° C and 100 ° C and preferably between 10 ° C and 50 ° C.
- the process of the invention is generally carried out under atmospheric pressure but can also be carried out under slightly reduced pressure of, for example, between 500 and 760 mm of mercury.
- the reaction is carried out under a controlled atmosphere of inert gases.
- inert gases we can establish a atmosphere of rare gases, preferably argon but it is more economical to use nitrogen.
- a first variant consists in first loading the organic solvent, the ketone and the diol and then pouring the pure or diluted sulfuryl halide in a part of the organic solvent, for example 10 to 30% by weight of the solvent used.
- a preferred variant of the invention consists in loading the organic solvent, the ketone and part of the diol, for example from 50 to 100%, then in gradually pouring the other part of the diol and the sulfuryl halide, thus making it possible to minimize side reactions.
- the addition time depends on the quantity to be added. It can vary for example between 1 and 8 hours.
- - R, R 2 , R3, n and ⁇ have the meaning given above, - X represents a halogen atom, preferably a chlorine or bromine atom.
- the cyclic ketal can be recovered, in a conventional manner, by crystallization or by purification on a silica column.
- the ketone can also be obtained from the reaction medium without separating the compound of formula (III).
- the hydrolysis of the reaction medium is carried out without separation of the compound of formula (III).
- the ketone function is released by hydrolysis.
- water is generally added in stoichiometric amount and preferably in excess of 100 to 200%. It is optionally possible to use water / methanol mixtures having
- a catalyst of Br ⁇ nsted acid type can be added and mention may in particular be made of sulfuric acid, phosphoric acid, hydrochloric acid, acid hydrobromic, hydrofluoric acid, trifluoroacetic acid, trifluoromethanesulfonic acid.
- sulfuric acid is chosen.
- the amount of acid used is the amount such that the ratio between the number of moles of compound of formula (III) and the number of H + ions generally varies from 0.05 and 0.3.
- the conventional treatments of back-extraction of the aqueous phase are carried out using the organic solvent, distillation of the solvent and a solvent such as methanol or monochlorobenzene is added.
- the halogenated aromatic ketone is cooled and precipitated, which preferably corresponds to the following formula (IV):
- R 7 represents an alkyl group having from 1 to 4 carbon atoms
- - ⁇ a represents an ethylene, methylethylene or propylene group.
- Example 1 is given below illustrating the present invention and which are given by way of illustration and without limitation.
- Example 1 is given below illustrating the present invention and which are given by way of illustration and without limitation.
- reaction medium is then left at this temperature of 18 ° C. for 1 h 15 min.
- the reaction medium is poured onto an ice (30 g) / water (30 g) mixture.
- the aqueous phase is extracted twice with 30 ml of dichloromethane and the combined organic phases are dried over MgSO 4 and then filtered.
- the crude reaction product which is analyzed by gas chromatography (GC) has the following composition:
- the crude reaction product is purified by flash chromatography on a silica column and 6 g of acetal of formula (B) are isolated. The isolated yield is 53%.
- Said product is characterized by NMR and mass spectrometry: 1 H NMR: 3.68 (s, 2H, -CH 2 CI), 3.75 (s, 3H, -OMe), 3.84 - 4.10 (m, 4H, -CH 2 CH 2 -), 6.82 (d, 2H, ArH), 7.37 (d, 2H, ArH), SM (El): 228 (M ° +), 197 (M - OMe) , 192 (M-Cl).
- reaction medium is then brought to 50 ° C for 30 min.
- the crude reaction product obtained is taken up in 37.37 g of methanol at 50 ° C and the clear solution thus obtained is gradually cooled to 0 ° C.
- the compound of formula (C) is characterized by the conventional methods White solid: melting point: 97.5 - 98.5 ° C, GC: 98.5% w / w, 1 H NMR: 99% w / w , 3.81 (s, 3H, -OMe), 4.57 (s, 2H, -CH 2 CI), 6.88 (d, 2H, ArH), 7.87 (d, 2H, ArH).
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR01/09805 | 2001-07-23 | ||
FR0109805A FR2827602A1 (fr) | 2001-07-23 | 2001-07-23 | Procede de preparation de alpha-halogenoalkylarylcetones et de leurs produits intermediaires halogenes de type cetal cyclique |
Publications (1)
Publication Number | Publication Date |
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WO2003010156A1 true WO2003010156A1 (fr) | 2003-02-06 |
Family
ID=8865802
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2002/002458 WO2003010156A1 (fr) | 2001-07-23 | 2002-07-11 | Procede de preparation de alpha-halogenoalkylarylcetones et de leurs produits intermediaires halogenes de type cetal cyclique |
Country Status (2)
Country | Link |
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FR (1) | FR2827602A1 (fr) |
WO (1) | WO2003010156A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004078705A1 (fr) * | 2003-03-06 | 2004-09-16 | Basf Aktiengesellschaft | Procede de production d'$g(a)-(3-arylthio)-acetophenones |
JP2012087113A (ja) * | 2010-09-22 | 2012-05-10 | Daicel Corp | フェニル酢酸化合物 |
CN110494427A (zh) * | 2017-04-24 | 2019-11-22 | Igm集团私人有限公司 | 烷基芳基酮的简单氧化官能化 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4160838A (en) * | 1977-06-02 | 1979-07-10 | Janssen Pharmaceutica N.V. | Antimicrobial and plant-growth-regulating triazole derivatives |
EP0034871A2 (fr) * | 1980-02-26 | 1981-09-02 | BLASCHIM S.p.A. | Procédé de préparation d'esters d'acides alcanoiques par réarrangement d'alpha-halocétals |
EP0054278A1 (fr) * | 1980-12-11 | 1982-06-23 | Magyar Tudomanyos Akademia Közp Kemiai Kutato Intezet | Agents de protection des plantes à utiliser lors de la lutte contre les mauvaises herbes; le 2-(dichlorométhyl)-3-phényl-1,3-oxazolidine et le 2-(dichlorométhyl)-3-allyl-1,3-oxazolidine et procédé de préparation des composés compris dans les agents précités comme antidotes, respectivement de ces derniers composés |
US5710341A (en) * | 1995-03-31 | 1998-01-20 | Basf Aktiengesellschaft | Preparation of α-chloroalkyl aryl ketones |
-
2001
- 2001-07-23 FR FR0109805A patent/FR2827602A1/fr not_active Withdrawn
-
2002
- 2002-07-11 WO PCT/FR2002/002458 patent/WO2003010156A1/fr not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4160838A (en) * | 1977-06-02 | 1979-07-10 | Janssen Pharmaceutica N.V. | Antimicrobial and plant-growth-regulating triazole derivatives |
EP0034871A2 (fr) * | 1980-02-26 | 1981-09-02 | BLASCHIM S.p.A. | Procédé de préparation d'esters d'acides alcanoiques par réarrangement d'alpha-halocétals |
EP0054278A1 (fr) * | 1980-12-11 | 1982-06-23 | Magyar Tudomanyos Akademia Közp Kemiai Kutato Intezet | Agents de protection des plantes à utiliser lors de la lutte contre les mauvaises herbes; le 2-(dichlorométhyl)-3-phényl-1,3-oxazolidine et le 2-(dichlorométhyl)-3-allyl-1,3-oxazolidine et procédé de préparation des composés compris dans les agents précités comme antidotes, respectivement de ces derniers composés |
US5710341A (en) * | 1995-03-31 | 1998-01-20 | Basf Aktiengesellschaft | Preparation of α-chloroalkyl aryl ketones |
Non-Patent Citations (2)
Title |
---|
CHEMICAL ABSTRACTS, vol. 78, no. 21, 1973, Columbus, Ohio, US; abstract no. 135816b, SANCHEZ-VIESCA,F.: "KETONES CONTAINING THE 2,4,5-TRIMETHOXYPHENYL RING." page 342; column 2; XP002218936 * |
CIENCIA (MEXICO CITY), vol. 27, no. 6, 1972, MEXICO, pages 185 - 9 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004078705A1 (fr) * | 2003-03-06 | 2004-09-16 | Basf Aktiengesellschaft | Procede de production d'$g(a)-(3-arylthio)-acetophenones |
US7385087B2 (en) | 2003-03-06 | 2008-06-10 | Basf Aktiengesellschaft | Method for producing a-(3-arylthio)-acetophenones |
JP2012087113A (ja) * | 2010-09-22 | 2012-05-10 | Daicel Corp | フェニル酢酸化合物 |
CN110494427A (zh) * | 2017-04-24 | 2019-11-22 | Igm集团私人有限公司 | 烷基芳基酮的简单氧化官能化 |
CN110494427B (zh) * | 2017-04-24 | 2023-03-28 | Igm集团私人有限公司 | 烷基芳基酮的简单氧化官能化 |
Also Published As
Publication number | Publication date |
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FR2827602A1 (fr) | 2003-01-24 |
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