Class 562/856 - Processes

Subclass of Class 562 - Organic compounds -- part of the class 532-570 series
Definition: Processes for the preparation of the carboxylic halide containing
No. of patents: 36
Last issue date: 06/01/2010

Number	Title	Issue Date
7728171	Process for the production of acid chlorides A process for the preparation of acid halides of formula I which are useful as intermediates in the preparation of i.a. pharmaceutically active compounds. ...	06/01/2010
7435849	Process for the production of acid chlorides A process for the preparation of acid halides of formula I which are useful as intermediates in the preparation of i.a. pharmaceutically active compounds. ...	10/14/2008
7423174	Method of separating acid The present invention provides a process for selectively separating HF and like acids present along with water-unstable organic acid fluorides. In particular, the invention provides a process for separating an acid from a system in which the acid and an organic acid...	09/09/2008
7405331	High-purity (fluoroalkyl)benzene derivative and process for producing the same The process for producing a (fluoroalkyl)benzene derivative according to the present invention comprises a step of reducing the total content of group 3 to group 12 transition metals in an alkylbenzene derivative to 500 ppm or less in terms of metal atoms; a step of...	07/29/2008
7375253	Process for the preparation of (per)fluorinated mono-functional carbonyl compounds A process for the synthesis of (per)fluorinated mono-functional carbonyl compounds having the following formula (I): F-A-RF—B—C(O)X1 (I) wherein: X1=F, CF3; A, B equal to or...	05/20/2008
7161030	Hydrofluoroethers having at least one hydrogenated-OCFX'CHend group wherein X′=F, CF and their preparation process Hydrofluoroethers of formula: T-CFX′—O—Rf—CFX-T′ (II) wherein: T=CH3; X, X′, equal to or different from each other, are selected between F, CF3;...	01/09/2007
7141704	Process for preparing hydrofluoroethers Process for obtaining hydrofluoroethers of formula (I): A-(Rf)n0—CF(Rf1)—O—Rh (I) wherein a mono- or bifunctional carbonyl compound of formula (IV): B—Rf—C(O)Rf1...	11/28/2006
6911558	Method for purifying chloromethyl chloroformate Describes a method for obtaining substantially pure chloromethyl chloroformate from a chloroformate mixture comprising chloromethyl chloroformate and methyl chloroformate by heating the chloroformate mixture in a reaction zone at temperatures ranging from at least 5...	06/28/2005
6605743	Continuous process for the preparation of pivaloyl chloride and of aroyl chloride The invention relates to a continuous process for the preparation of pivaloyl chloride and of aroyl chloride, in particular of benzoyl chloride, which consists in reacting pivalic acid with a trichloromethylated aromatic compound in the presence of a cata...	08/12/2003
6586626	Process for producing a fluorine-containing compound by liquid phase fluorination The invention provides a process for producing a fluorine-containing compound from an inexpensive material. Namely, Compound I such as RA CH2 OH is reacted with Compound II such as XCORB to form Compound III such as RA	07/01/2003
6262300	Method for producing chlorocarboxylic acid chlorides The present invention provides process for the preparation of chlorocarbonyl chlorides of the formula I R1 --CHCl--Y--COCl (I), where R1 is for example hydrogen or C1 - to C20 -alkyl and Y is for example a saturated or m...	07/17/2001
6248919	Process for the preparation of farnesyltransferase inhibitors A process for the preparation of preparation of farnesyltransferase inhibitors of formula (I) ##STR1## or pharmaceutically acceptable salts or prodrugs thereof, is disclosed....	06/19/2001
5912371	Method for preparing fatty acid chlorides A method for preparing fatty acid chlorides. The method comprises reacting a silylation product of a fatty acid comprising at 1east 2 aliphatically unsaturated bonds per molecule and a chlorinating agent....	06/15/1999
5905169	Process for producing polyfluoroacyl compositions A process is disclosed for preparing polyhaloacyl fluorides such as trifluoroacetyl fluoride and difluoroacetyl fluoride by oxidizing 1-chloro-1,2,2,2-trifluoroethanes and 1,1-dichloro-2,2-difluoroethane, respectively with oxygen....	05/18/1999
5869735	Process for the preparation of alkyl aryl ethers containing carboxyl groups Process for the preparation of alkyl aryl ethers containing carboxyl groups which are suitable for the preparation of colour film couplers, or derivatives thereof, by reaction of aromatic alcohols with alkyl halides containing carboxyl groups or derivativ...	02/09/1999
5430186	Preparation of carboxylic chlorides A process for the continuous manufacture of carboxylic chlorides (I) of the general formula R-COCl, in which R stands for a C-organic radical containing from 1 to 30 C atoms, by the reaction of a carboxylic acid (II) with a reaction product (III) of phosg...	07/04/1995
5362909	Process for the preparation of 3-chloro-2,4,5-trifluorobenzoyl chloride, 2,4,5-trifuluorobenzoyl fluoride, and 2,3,4,5-tetrahalogenobenzene derivatives 2,4,5-Trihalogenobenzene derivatives of the formula ##STR1## in which R is --COOH, --COCl, --COF, --CN, --CONH2, --CH2 OH, --CH2 Cl, --CHCl2, --CCl3 or --CHO, R1 is H, Cl or F, and R2	11/08/1994
5296640	Process for preparing perhaloacyl chlorides A process for preparing perhaloacyl chlorides such as trifluoroacetyl chloride by oxidizing lower perfluoroalkyl and monochloroperfluoroalkyl dichloromethane within the supercritical region and in the absence of water....	03/22/1994
5278328	Process for producing carboxylic acid chloride Disclosed is a process for producing a carboxylic acid chloride by reacting phosgene with a carboxylic acid or an anhydride thereof, which comprises effecting the reaction in the presence of a homopolymer or copolymer of a monomer represented by formula (...	01/11/1994
5258547	Process for preparing halogenated compounds A process for preparing halogenated compounds of formula RCY(Z)CH2 CH(X)C(CH3)CH2 COR1 where X, Y and Z are halo, R is alkyl, halo, haloalkyl or aryl, and R1 is hydroxy, halo, alkoxy, alkyl or haloalk...	11/02/1993
5247105	Fatty acid halogenide manufacture The invention provides a process for preparing fatty acid halide by reacting a fatty acid with a halogenating agent optionally followed by hydrolysis of unreacted halogenating agent and separating the fatty acid halide upper layer from the inorganic lower...	09/21/1993
5155234	Nitration of phthalic acid and phthalic anhydride using nitric acid A process for the preparation of nitrophthalic acid by the nitration of phthalic acid and/or phthalic anhydride using only nitric acid, said nitric acid having a concentration of at least about 95% by weight, and then recovering the nitrophthalic acid for...	10/13/1992
5130477	Oligohexafluoropropylene oxide derivatives and method of making A novel oligohexafluoropropylene oxide derivative is a useful intermediate. It is prepared by reacting an oligohexafluoropropylene oxide carbonyl fluoride with a metal iodide....	07/14/1992
5113016	Manufacture of phthaloyl chlorides Excess terephthalic acid or isophthalic acid is reacted with a phosgene/DMF complex nearly to completion in one or more stages to form terephthaloyl chloride or isophthaloyl chloride; in another stage, by-product formylbenzoyl chloride is oxidized and ter...	05/12/1992
4954651	Process for preparing trans-2,2-dimethyl-3-(2,2-dihalovinyl)-cyclopropane carboxylic acid halide Trans-2,2-dimethyl-3-(2,2-dihalovinyl)-cyclopropane carboxylic acid halides which are an intermediate for insecticides are prepared by allowing arylphosphines to react with cis- or cis-/trans-mixed 2,2-dimethyl-3-(2,2-dihalovinyl)-cyclopropane carboxylic ...	09/04/1990
4874473	Separation of diastereomers by extractive distillation Diastereomers can be separated with good industrial success with the aid of extractive distillation. The separation process is characterized in that an auxiliary which changes the partial pressure of the various diastereomers to be separated to a differen...	10/17/1989
4812264	Method for racemization of optically active chrysanthemic acid derivatives Racemization of an optically active chrysanthemic acid derivatives of the formula: ##STR1## wherein X represents a chlorine atom, bromine atom or 2,2-dimethyl-3-isobutenyl-cyclopropane carboxyl group and * mark represents asymmetric carbon atom,...	03/14/1989
4792618	Fluorinated carbocylic compounds Fluoro-substituted carbocyclic compounds are prepared by (A) reacting hydrogen fluoride with a chloro-cyclohexenyl compound of the formula ##STR1## where R1 and R2 are independently selected from the group consisting of --H, --...	12/20/1988
4582948	3-chloro-4-fluoro-5-nitrobenzotrifluoride Chloro-aromatic compounds of the formula ##STR1## wherein R is CF3, OCF3, OC2 F5, CN, NCO, or COCl, m is 0, 1 or 2; n is 0, 1 or 2; q is 1 or 2; q+m+n is less than 6; and when q is 1, m is 2; are prepared b...	04/15/1986
4500471	Preparation of trifluoromethyl-benzoyl halides Trifluoromethylbenzoyl chlorides are prepared by the reaction of trichloromethylbenzoyl chlorides or tribromomethylbenzoyl bromides with about 3 moles or less of hydrogen fluoride in the presence of a halogen transfer catalyst....	02/19/1985
4463188	Method for racemization of optically active 2,2-dimethylcyclopropane-1-carboxylic acid A method for racemization of optically active 2,2-dimethylcyclopropane-1-carboxylic acid by converting said acid to the corresponding halide thereof represented by the general formula; ##STR1## wherein X is a halogen atom, which is heated to a temper...	07/31/1984
4342704	Process for the preparation of 1,1-dichloroalkenes A process for the preparation of a 1,1-dichloroalkene of the formula ##STR1## in which R1 is hydrogen or an optionally substituted alkyl, alkenyl, alkynyl, aralkyl or aryl radical, and R2 is an optionally substituted alkyl, alkenyl, ...	08/03/1982
4251457	Process for purification of the off-gases resulting from the production of benzoyl chloride from phosgene A process for purification of the off-gases resulting from the production of benzoyl chloride by phosgenation of benzoic acid from phosgene comprising recovery of phosgene from said off-gases by means of a selective absorbent, i.e. benzoyl chloride at a t...	02/17/1981
4182906	Racemization of optically active 2,2-dimethyl-3-(1'-alkenyl)-cyclopropane-1-carboxylic acids A method for racemization of optically active 2,2-dimethyl-3-(1'-alkenyl)-cyclopropane-1-carboxylic acids of the formula: ##STR1## wherein R1 and R2 are each a hydrogen atom or an alkyl group having 1 to 4 carbon atoms or, ...	01/08/1980
3989750	Racemization of optically active 2,2-dimethyl-3-(1'-alkenyl)-cyclopropane-1-carboxylic acids A method for racemization of optically active 2,2-dimethyl-3-(1'-alkenyl)-cyclopropane-1-carboxylic acids of the formula: ##EQU1## wherein R1 and R2 are each a hydrogen atom or an alkyl group having 1 to 4 carbon atoms or, ...	11/02/1976
3940439	Acid chloride synthesis ଱,ଲ-Unsaturated carboxylic acid chlorides are advantageously produced in high yields and with minimal formation of by-products by reaction of the corresponding carboxylic acid with oxalyl chloride....	02/24/1976

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Class 562/856 - Processes