FR2382428A1 - PROCESS FOR THE PREPARATION OF 2-CHLORACETYLACETIC ESTERS - Google Patents

PROCESS FOR THE PREPARATION OF 2-CHLORACETYLACETIC ESTERS

Info

Publication number
FR2382428A1
FR2382428A1 FR7805907A FR7805907A FR2382428A1 FR 2382428 A1 FR2382428 A1 FR 2382428A1 FR 7805907 A FR7805907 A FR 7805907A FR 7805907 A FR7805907 A FR 7805907A FR 2382428 A1 FR2382428 A1 FR 2382428A1
Authority
FR
France
Prior art keywords
esters
chloracetylacetic
preparation
chlorine
degrees
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.)
Granted
Application number
FR7805907A
Other languages
French (fr)
Other versions
FR2382428B1 (en
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.)
Consortium fuer Elektrochemische Industrie GmbH
Original Assignee
Consortium fuer Elektrochemische Industrie GmbH
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 Consortium fuer Elektrochemische Industrie GmbH filed Critical Consortium fuer Elektrochemische Industrie GmbH
Publication of FR2382428A1 publication Critical patent/FR2382428A1/en
Application granted granted Critical
Publication of FR2382428B1 publication Critical patent/FR2382428B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
    • C07C69/66—Esters of carboxylic acids having esterified carboxylic groups bound to acyclic carbon atoms and having any of the groups OH, O—metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety
    • C07C69/67—Esters of carboxylic acids having esterified carboxylic groups bound to acyclic carbon atoms and having any of the groups OH, O—metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety of saturated acids
    • C07C69/716—Esters of keto-carboxylic acids or aldehydo-carboxylic acids
    • C07C69/72—Acetoacetic acid esters

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Procédé perfectionné pour préparer les esters 2-chloracétylacétiques à partir du chlore et des esters acétylacétiques. On envoie le chlore et l'ester acétylacétique en continu en courants parallèles à un rapport molaire de 0,5 à 1,3 : 1, de préférence de 0,8 à 1,2 : 1 dans une chambre de réaction dans laquelle ils entrent à une température comprise entre - 20 et + 30 degrés C, de préférence entre 10 et 20 degrés C. Le procéde continu selon l'invention donne des rendements et des sélectivités supérieurs à ceux obtenus en mode opératoire discontinu.Improved process for preparing 2-chloroacetylacetic esters from chlorine and acetylacetic esters. The chlorine and the acetylacetic ester are fed continuously in parallel streams at a molar ratio of 0.5 to 1.3: 1, preferably 0.8 to 1.2: 1 into a reaction chamber where they enter. at a temperature of between -20 and + 30 degrees C, preferably between 10 and 20 degrees C. The continuous process according to the invention gives higher yields and selectivities than those obtained in batch mode.

FR7805907A 1977-03-03 1978-03-01 PROCESS FOR THE PREPARATION OF 2-CHLORACETYLACETIC ESTERS Granted FR2382428A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772709138 DE2709138A1 (en) 1977-03-03 1977-03-03 PROCESS FOR THE PRODUCTION OF 2-CHLORACETACETIC ACID ESTERS

Publications (2)

Publication Number Publication Date
FR2382428A1 true FR2382428A1 (en) 1978-09-29
FR2382428B1 FR2382428B1 (en) 1980-06-06

Family

ID=6002619

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7805907A Granted FR2382428A1 (en) 1977-03-03 1978-03-01 PROCESS FOR THE PREPARATION OF 2-CHLORACETYLACETIC ESTERS

Country Status (4)

Country Link
JP (1) JPS53130620A (en)
DE (1) DE2709138A1 (en)
FR (1) FR2382428A1 (en)
GB (1) GB1560186A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6459709B2 (en) * 2015-03-27 2019-01-30 セントラル硝子株式会社 Practical production method of 3,3-difluoro-2-hydroxypropionic acid

Also Published As

Publication number Publication date
FR2382428B1 (en) 1980-06-06
DE2709138A1 (en) 1978-09-07
GB1560186A (en) 1980-01-30
JPS53130620A (en) 1978-11-14

Similar Documents

Publication Publication Date Title
FR2433539A1 (en) PROCESS FOR THE SYNTHESIS OF 17 (20) -PREGNANES FROM 17-CETOSTEROIDES
FR2367755A1 (en) POU PROCESS
FR2382428A1 (en) PROCESS FOR THE PREPARATION OF 2-CHLORACETYLACETIC ESTERS
DE3560629D1 (en) Process for the recovery of l-malic acid
FR2381716A1 (en) PROCESS FOR PREPARING A CRYSTALLINE ALUMINOSILICATE
FR2455036A1 (en) PROCESS FOR THE SEPARATION BY DISTILLATION OF TERTIO-ALKYL HYDROPEROXIDES AND DI-TERTIO-ALKYL PEROXIDES
JPS6426531A (en) Production of fatty acid chloride
FR2383166A1 (en) PROCESS FOR PREPARING B-DIMETHYLAMINO-PROPIONITRILE
FR2434796A1 (en) PROCESS AND PLANT FOR RECOVERING A-HYDROXY- AND A-AMINO-CARBOXYLIC ACIDS FROM SUGAR MEDIA CONTAINING THEM
US4499029A (en) Isobutyryl fluoride manufacture
FR2433505A1 (en) PROCESS FOR THE MANUFACTURE OF PHENOXYLACTIC ACIDS, THEIR DERIVATIVES AND PRODUCTS OBTAINED
SU481595A1 (en) Method for preparing unsaturated perfluorocarboxylic acids
US2745868A (en) Process for the production of trichloroacetonitrile
FR2444026A1 (en) PROCESS FOR THE MANUFACTURE OF SUBSTITUTED ACETONITRILES
SU541838A1 (en) Purification method of 1.12-dodecamethylenediamine
FR2376103A2 (en) PROCESS FOR OBTAINING 1,1-DIFLUOROETHYLENE FROM ACETYLENE
Atherton et al. Synthesis of the four isomers of α, β-diaminobutyric acid
SU389080A1 (en) METHOD OF GETTING NON-CIRCULATED [PUPPED 1,4-DIAMMONIUM COMPOUNDS
Tremelling et al. Heterogeneous reactions. 5. The anti orientation of elimination for the dehydrobromination of meso-and dl-2, 3-dibromobutane and (E)-and (Z)-2-bromobut-2-ene with solid potassium tert-butoxide
SU461933A1 (en) Method for producing bromofluoroanhydride-bromoalkylphosphonic acids
SU372215A1 (en) The Union Union П? НГ? 4TNG1 .; •• ViJ ^^ rr vftj-jl
SU1018946A1 (en) Process for preparing diphenacylphosphonic acid
FR2429199A1 (en) PROCESS FOR THE SYNTHESIS OF A PHENYLACETIC ACID
FR2385709A1 (en) PROCESS FOR OBTAINING CHLORIDES OF AROMATIC ACIDS AS WELL AS 3-CHLOROPHTALIDE
FR2362807A1 (en) PROCESS FOR PREPARING BROMO-1-DICHLORO-3,5-BENZENE BY SPECIAL ISOMERIZATION OF MONOBROMODICHLOROBENZENE

Legal Events

Date Code Title Description
ST Notification of lapse