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1. WO2011009726 - METHOD FOR PREPARING A HALOGENOCETYL FLUORIDE AND THE DERIVATIVES THEREOF

Publication Number WO/2011/009726
Publication Date 27.01.2011
International Application No. PCT/EP2010/059747
International Filing Date 07.07.2010
IPC
C07C 51/04 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
51Preparation of carboxylic acids or their salts, halides, or anhydrides
04from carboxylic acid halides
C07C 51/58 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
51Preparation of carboxylic acids or their salts, halides, or anhydrides
58Preparation of carboxylic acid halides
C07C 51/60 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
51Preparation of carboxylic acids or their salts, halides, or anhydrides
58Preparation of carboxylic acid halides
60by conversion of carboxylic acids or their anhydrides into halides with the same carboxylic acid part
C07C 51/62 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
51Preparation of carboxylic acids or their salts, halides, or anhydrides
58Preparation of carboxylic acid halides
62by reactions not involving the carboxylic acid halide group
C07C 51/64 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
51Preparation of carboxylic acids or their salts, halides, or anhydrides
58Preparation of carboxylic acid halides
64Separation; Purification; Stabilisation; Use of additives
C07C 53/48 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
53Saturated compounds having only one carboxyl group bound to an acyclic carbon atom or hydrogen
38Acyl halides
46containing halogen outside the carbonyl halide group
48Halogenated acetyl halides
CPC
C07C 51/04
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
51Preparation of carboxylic acids or their salts, halides or anhydrides
04from carboxylic acid halides
C07C 51/58
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
51Preparation of carboxylic acids or their salts, halides or anhydrides
58Preparation of carboxylic acid halides
C07C 51/62
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
51Preparation of carboxylic acids or their salts, halides or anhydrides
58Preparation of carboxylic acid halides
62by reactions not involving the carboxylic acid halide group
C07C 51/64
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
51Preparation of carboxylic acids or their salts, halides or anhydrides
58Preparation of carboxylic acid halides
64Separation; Purification; Stabilisation; Use of additives
Applicants
  • RHODIA OPERATIONS [FR]/[FR] (AllExceptUS)
  • SAINT-JALMES, Laurent [FR]/[FR] (UsOnly)
  • METZ, François [FR]/[FR] (UsOnly)
Inventors
  • SAINT-JALMES, Laurent
  • METZ, François
Agents
  • BLANCHARD, Isabelle
Priority Data
09 0358021.07.2009FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) METHOD FOR PREPARING A HALOGENOCETYL FLUORIDE AND THE DERIVATIVES THEREOF
(FR) PROCEDE DE PREPARATION D'UN FLUORURE D'HALOGENOACETYLE ET DE SES DERIVES
Abstract
(EN)
The present invention relates to a method for preparing a halogenocetyl fluoride and the derivatives thereof. The inventive method for preparing a halogenocetyl fluoride acid is characterised in that said method includes: a step of preparing a halogenoacetyl halide by photo-oxidation of a halogenoethylene compound in conditions such that the transformation rate of the halogenoethylene compound into halogenoacetyl halide is no higher than 80 %, producing a reaction mixture essentially including halogenoacetyl halide and the excess halogenoethylene compound; a step of partial fluorination of the mixture obtained by reacting the latter with hydrofluoric acid suitable for obtaining a mixture of halogenoacetyl fluoride and the excess halogenoethylene compound; a step of separating the halogenoacetyl fluoride and the excess halogenoethylene compound. The invention can be used, specifically, for preparing the trichloroacetyl fluoride used as an intermediate species in the production of trifluoroacetic acid.
(FR)
La présente invention a pour objet un procédé de préparation d'un fluorure d'halogénoacétyle et de ses dérivés. Le procédé de préparation d'un fluorure d'halogénoacétyle selon l'invention est caractérisé par le fait qu'il comprend : - une étape de préparation d'un halogénure d'halogénoacétyle par photoxydation d'un composé halogénoéthylénique dans des conditions telles que le taux de transformation du composé halogénoéthylénique en halogénure d'halogénoacétyle est au plus égal à 80 % conduisant à un mélange réactionnel comprenant essentiellement l'halogénure d'halogénoacétyle et le composé halogénoéthylénique en excès, - une étape de fluoration partielle du mélange obtenu par réaction de ce dernier avec l'acide fluorhydrique permettant d'obtenir un mélange de fluorure d'halogénoacétyle et du composé halogénoéthylénique en excès, - une étape de séparation du fluorure d'halogénoacétyle et du composé halogénoéthylénique en excès. L'invention s'applique plus particulièrement à la préparation du fluorure de trichloroacétyle utilisé comme intermédiaire de fabrication de l'acide trifluoroacétique.
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