EP0569377A1 - Procede de production de 4h-3,1-benzoxazin-4-ones - Google Patents

Procede de production de 4h-3,1-benzoxazin-4-ones

Info

Publication number
EP0569377A1
EP0569377A1 EP19920901610 EP92901610A EP0569377A1 EP 0569377 A1 EP0569377 A1 EP 0569377A1 EP 19920901610 EP19920901610 EP 19920901610 EP 92901610 A EP92901610 A EP 92901610A EP 0569377 A1 EP0569377 A1 EP 0569377A1
Authority
EP
European Patent Office
Prior art keywords
groups
alkyl
reaction
halogen
benzoxazin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19920901610
Other languages
German (de)
English (en)
Inventor
Erwin Hahn
Paul Guenthert
Guenther Glas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF SE
Original Assignee
BASF SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BASF SE filed Critical BASF SE
Publication of EP0569377A1 publication Critical patent/EP0569377A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D265/00—Heterocyclic compounds containing six-membered rings having one nitrogen atom and one oxygen atom as the only ring hetero atoms
    • C07D265/04—1,3-Oxazines; Hydrogenated 1,3-oxazines
    • C07D265/12—1,3-Oxazines; Hydrogenated 1,3-oxazines condensed with carbocyclic rings or ring systems
    • C07D265/14—1,3-Oxazines; Hydrogenated 1,3-oxazines condensed with carbocyclic rings or ring systems condensed with one six-membered ring
    • C07D265/20—1,3-Oxazines; Hydrogenated 1,3-oxazines condensed with carbocyclic rings or ring systems condensed with one six-membered ring with hetero atoms directly attached in position 4
    • C07D265/22—Oxygen atoms

Definitions

  • the present invention relates to an improved process for the preparation of 4H-3,1-benzoxazin-4-ones of the general formula I.
  • R 1 denotes hydrogen, C 1 -C 4 alkyl, C 1 -C 4 alkoxy, carboxyl, sulfo, nitro or halogen
  • R 2 is C 1 -C 20 alkyl, phenyl or phenylalkyl having 1 to 4 C atoms in the alkyl group, a phenyl nucleus being represented by one or two C 1 -C 4 alkyl groups, C 1 -C 3 haloalkyl groups, C 1 -C 4 alkoxy groups, C 1 -C 3 haloalkoxy groups, C 1 -C 4 alkyl mercapto groups, C 1 -C 3 haloalkyl mercapto groups, carboxyl groups, sulfo groups, C 1 -C 4 alkylsulfonyl groups, C 1 -C 3 haloalkyl sulfonyl groups , Nitro groups or halogen atoms can be substituted, and n represents 1 or 2, by reaction of isatoic anhydrides of the general
  • DE-A 35 14 183 relates to a process for the preparation of optionally substituted 2-phenyl-4H-3,1-benzoxazin-4-ones by reacting a corresponding anthranic acid with a corresponding benzoyl halide in the presence of a base
  • DE-AS 25 56 590 describes a process for the preparation of benzoxazines, especially 2-alkyl- or 2-aryl-4H-3,1-benzoxazin-4-ones, in which an isatoic anhydride with an acylating agent in the form a carboxylic acid anhydride or an acid halide is reacted in the presence of effective portions of a tertiary amine.
  • the object of the present invention was therefore to provide a simple, efficient and economical process for the preparation of the 4H-3,1-benzoxazin-4-one I.
  • the process defined at the outset has been found, which is characterized in that the reaction is carried out at an outside temperature of 215 to 280 ° C. and the reactants II and III are allowed to react with one another at this temperature for at least 4 hours.
  • the outside temperature for the reaction is 220 to 250 ° C.
  • the outside temperature is to be understood as the temperature of the jacket of the reaction vessel, in particular of the heating liquid located in this jacket.
  • the inside temperature i.e. the temperature of the reaction mixture itself should ideally be identical to the outside temperature; in practice, however, the inside temperature is usually a few degrees lower than the outside temperature. It should also be noted that when using an acyl halide III, the boiling point of which is lower than the temperature range claimed for the reaction according to the invention, the internal temperature is equal to the boiling temperature of III towards the start of the reaction (for example 197 ° C. when using benzoyl chloride), with decrease the
  • the reaction time for the temperature range mentioned is at least 4 hours, after which a conversion of 80 to 95% is normally achieved. However, it is cheaper to let the implementation run for at least 5 hours, because after this time the turnover is usually 95% or higher. After 6 hours of reaction, the reaction is usually practically complete.
  • the reaction is advantageously carried out at normal pressure.
  • Working in closed reaction vessels under autogenous pressure or in autoclaves at elevated pressures is not necessary; this is questionable for safety reasons, because during the reaction gases (hydrogen chloride and carbon dioxide) are released that have to be removed.
  • 1.0 to 1.5 mol of acyl halide II is used per mol of isatoic anhydride II.
  • a larger excess of III often leads to the reaction mixture not reaching the temperature required for rapid reaction.
  • An amount of 1.0 to 1.3 mol III, in particular 1.05 to 1.2 mol III, per mol II is particularly favorable.
  • residues R 1 which can be in the 5-, 6-, 7- and / or 8-position on the benzene nucleus of the heterocyclic system, are added
  • Nitro groups and - Halogen atoms such as fluorine, chlorine and bromine.
  • methyl groups, methoxy groups, halogen atoms and in particular hydrogen alone are preferred.
  • the number n of the radicals R 1 is 2 or preferably 1.
  • the radicals R 2 in the 2-position of the benzoxazin-4-one system are: straight-chain or branched C 1 -C 20 -alkyl, for example methyl, ethyl, n-propyl, iso-propyl, n-butyl, tert-butyl, n-pentyl, n-hexyl, n-heptyl, n-octyl, 2-ethylhexyl, n-nonyl, iso ⁇
  • Phenylalkyl with 1 to 4 carbon atoms in the alkyl group e.g.
  • An existing phenyl nucleus in the R 2 radical can be substituted by two or preferably one of the following radicals in the o-, m- or p-position: C 1 -C 4 -alkyl such as methyl, ethyl, n-propyl, iso-propyl, n-butyl iso-butyl, sec.
  • Methylenedioxy, - C 1 -C 3 haloalkoxy such as difluoromethoxy, trifluoromethoxy, chlorodifluoromethoxy, 1,1,2,2-tetrafluoroethoxy or
  • Trifluoromethylsulfonyl - Nitro or - Halogen such as fluorine, chlorine or bromine.
  • the following radicals are preferred for R 2 : - straight-chain or branched C 1 -C 4 alkyl, in particular methyl, - unsubstituted phenyl, - by C 1 -C 4 alkyl, in particular phenyl substituted by methyl, - by C 1 -C 3 haloalkyl substituted phenyl - C 1 -C 4 alkoxy, in particular by methoxy substituted phenyl, - substituted with C 1 -C 3 haloalkoxy, phenyl, - by C 1 -C 3 -Halogenalkylmercapto substituted phenyl - C 1 - C 4 alkylsulfonyl, in particular phenyl substituted by methylsulfonyl, phenyl substituted by C 1 -C 3 haloalky
  • the compounds I obtained can be purified by the customary methods, for example by recrystallization or distillation, and / or, if desired, be made up by the customary methods, for example by granulation from the melt before or after a purification step.
  • the process according to the invention makes it possible to produce 4H-3,1-benzoxazin-4-one I in a simple manner efficiently, ie with high yields, and economically cheap. You do not need any auxiliary chemicals such as solvents or catalysts.
  • the implementation was practically complete in a short time, which is reflected in a high space-time yield.
  • the product is usually obtained in a sufficiently pure form, since the reaction takes place without any significant side reactions, so that further cleaning operations are unnecessary for many applications.
  • the 4H-3,1-Benzoxazin-4-one I are important compounds for a wide range of applications, for example as pesticides, medicines, detergent additives or UV stabilizers.
  • compounds I with halogen, methyl or methoxy for R 1 and halophenyl, haloalkylphenyl, haloalkoxyphenyl, haloalkylmercaptophenyl or haloalkylsulfony iphenyl, each having 1 to 3 carbon atoms in the alkyl group for R 2, can be used as selective herbicides.
  • Certain 2-substituted 4H-3,1-benzoxazin-4-ones are suitable as cold bleach activators in detergents.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)

Abstract

Production de 4H-3,1-benzoxazin-4-ones de formule (I), dans laquelle R1 représente hydrogène, alkyle C1-C4, alcoxy C1-C4, carboxyle, sulfo, nitro ou halogène; R2 représente alkyle C1-C20, phényle ou phénylalkyle ayant 1 à 4 atomes de carbone dans le groupe alkyle, un noyau phényle présent pouvant être substitué par un ou deux groupes alkyle C1-C4, groupes alkyle C1-C3; groupes alcoxy C1-C4, groupes alcoxy halogène C1-C4, groupes alkylmercapto C1-C4, groupes alkylmercapto halogène C1-C3, groupes carboxyle, groupes sulfo, groupes alkylsulfonyle C1-C4, groupes alkylsulfonyle halogène C1-C3, groupes nitro ou atomes d'halogène; et n vaut 1 ou 2; par la mise en réaction d'anhydrides d'acide isato de formule (II) avec des haloïdes acyle de formule (III) dans laquelle X représente chlore ou brome. La mise en réaction s'effectue à une température extérieure de 215 à 280 °C et les composants de la réaction (II et III) sont laissés en réaction pendant au moins 4 heures à cette température.
EP19920901610 1991-01-18 1992-01-08 Procede de production de 4h-3,1-benzoxazin-4-ones Withdrawn EP0569377A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4101380 1991-01-18
DE19914101380 DE4101380A1 (de) 1991-01-18 1991-01-18 Verfahren zur herstellung von 4h-3,1-benzoxazin-4-onen

Publications (1)

Publication Number Publication Date
EP0569377A1 true EP0569377A1 (fr) 1993-11-18

Family

ID=6423266

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920901610 Withdrawn EP0569377A1 (fr) 1991-01-18 1992-01-08 Procede de production de 4h-3,1-benzoxazin-4-ones

Country Status (5)

Country Link
EP (1) EP0569377A1 (fr)
JP (1) JPH06504532A (fr)
CA (1) CA2100562A1 (fr)
DE (1) DE4101380A1 (fr)
WO (1) WO1992012971A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4134770A1 (de) * 1991-10-22 1993-04-29 Basf Ag Koernige bleichaktivatorzusammensetzung
WO1993022300A1 (fr) * 1992-04-23 1993-11-11 Bp Chemicals Limited Procede de production de 2-phenyl-benzoxazin-4-one
WO1997048707A1 (fr) * 1996-06-20 1997-12-24 Smithkline Beecham Plc Derives de la 4h-3,1-benzoxazin-4-one et analogues utilises comme agents antiviraux
US6774232B2 (en) * 2001-10-22 2004-08-10 Cytec Technology Corp. Low color, low sodium benzoxazinone UV absorbers and process for making same
CN115043782B (zh) * 2022-06-01 2023-08-08 贵州省中国科学院天然产物化学重点实验室(贵州医科大学天然产物化学重点实验室) 4h-3,1-苯并噁嗪-4-酮衍生物及其制备方法和应用

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3514183A1 (de) * 1985-04-19 1986-10-23 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung substituierter 2-phenyl-4h-3,1-benzoxazin-4-one

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9212971A1 *

Also Published As

Publication number Publication date
JPH06504532A (ja) 1994-05-26
DE4101380A1 (de) 1992-07-23
WO1992012971A1 (fr) 1992-08-06
CA2100562A1 (fr) 1992-07-19

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