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FR2381735A1 - PROCESS FOR THE MANUFACTURE OF A-CETOCARBOXYLIC ACIDS AND PROCESSES THEREFORE OBTAINED - Google Patents

PROCESS FOR THE MANUFACTURE OF A-CETOCARBOXYLIC ACIDS AND PROCESSES THEREFORE OBTAINED

Info

Publication number
FR2381735A1
FR2381735A1 FR7717128A FR7717128A FR2381735A1 FR 2381735 A1 FR2381735 A1 FR 2381735A1 FR 7717128 A FR7717128 A FR 7717128A FR 7717128 A FR7717128 A FR 7717128A FR 2381735 A1 FR2381735 A1 FR 2381735A1
Authority
FR
France
Prior art keywords
manufacture
formula
acid
degrees
cetocarboxylic
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
FR7717128A
Other languages
French (fr)
Other versions
FR2381735B1 (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.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
Deutsche Gold und Silber Scheideanstalt
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 Degussa GmbH, Deutsche Gold und Silber Scheideanstalt filed Critical Degussa GmbH
Publication of FR2381735A1 publication Critical patent/FR2381735A1/en
Application granted granted Critical
Publication of FR2381735B1 publication Critical patent/FR2381735B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/06—Preparation of carboxylic acids or their salts, halides or anhydrides from carboxylic acid amides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

a. Procédé par saponification de cyanures d'acyle. b. Procédé caractérisé en ce que l'on traite d'abord les cyanures d'acyle, de la formule Il dans un solvant organique ou un mélange de ces solvants, liquide et inerte, dans les conditions de la réaction, d'abord avec de l'acide chlorhydrique gazeux, et ensuite, à une température se situant entre - 70 degrés C et + 70 degrés C environ, avec de l'eau et transforme l'amide d'acide carboxylique de formule III ainsi formé, éventuellement après séparation intermédiaire, d'une façon connue, par hydrolyse acide ou alcaline, en acide alpha -cétocarboxylique de la formule I. c. Procédé applicable à la fabrication de produits intermédiaires pour transamination ou pour herbicides.at. Process by saponification of acyl cyanides. b. Process characterized in that the acyl cyanides of formula II are first treated in an organic solvent or a mixture of these solvents, liquid and inert, under the reaction conditions, first with 'gaseous hydrochloric acid, and then, at a temperature between - 70 degrees C and + 70 degrees C approximately, with water and transforms the carboxylic acid amide of formula III thus formed, optionally after intermediate separation, in a known manner, by acid or alkaline hydrolysis, to alpha-ketocarboxylic acid of formula I. c. Process applicable to the manufacture of intermediates for transamination or for herbicides.

FR7717128A 1977-02-25 1977-06-03 PROCESS FOR THE MANUFACTURE OF A-CETOCARBOXYLIC ACIDS AND PROCESSES THEREFORE OBTAINED Granted FR2381735A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2708185A DE2708185C3 (en) 1977-02-25 1977-02-25 Process for the preparation of α-ketocarboxylic acids

Publications (2)

Publication Number Publication Date
FR2381735A1 true FR2381735A1 (en) 1978-09-22
FR2381735B1 FR2381735B1 (en) 1980-01-18

Family

ID=6002153

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7717128A Granted FR2381735A1 (en) 1977-02-25 1977-06-03 PROCESS FOR THE MANUFACTURE OF A-CETOCARBOXYLIC ACIDS AND PROCESSES THEREFORE OBTAINED

Country Status (12)

Country Link
JP (1) JPS6055497B2 (en)
AT (1) AT367014B (en)
BE (1) BE855257A (en)
CH (1) CH627430A5 (en)
DD (1) DD131013A5 (en)
DE (1) DE2708185C3 (en)
FR (1) FR2381735A1 (en)
GB (1) GB1533818A (en)
IL (1) IL52239A (en)
IT (1) IT1143581B (en)
NL (1) NL7706161A (en)
SU (1) SU793376A3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0012548A1 (en) * 1978-12-05 1980-06-25 Stauffer Chemical Company Process for the preparation of substituted glyoxylic acids and derivatives thereof and acids and derivatives so produced

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3003541A1 (en) * 1980-01-31 1981-08-06 Bayer Ag, 5090 Leverkusen METHOD FOR PRODUCING 4-AMINO-6-TERT.-BUTYL-3-METHYLTHIO-1,2,4-TRIAZINE-5 (4H) -ON
DE3009043A1 (en) * 1980-03-08 1981-09-24 Bayer Ag, 5090 Leverkusen METHOD FOR PRODUCING 4-AMINO-6-TERT.-BUTYL-3-METHYLTHIO-1,2,4-TRIAZINE-5 (4H) -ON
DE3134230A1 (en) * 1981-08-29 1983-03-10 Bayer Ag, 5090 Leverkusen METHOD FOR PRODUCING 4-METHYL-5-OXO-3-THIOXO-TETRAHYDRO-1,2,4- (2H, 4H) -TRIAZINES
DE3370151D1 (en) * 1983-11-15 1987-04-16 Ethyl Corp Preparation of cyclic-keto-acids

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0012548A1 (en) * 1978-12-05 1980-06-25 Stauffer Chemical Company Process for the preparation of substituted glyoxylic acids and derivatives thereof and acids and derivatives so produced

Also Published As

Publication number Publication date
DE2708185B2 (en) 1978-11-30
FR2381735B1 (en) 1980-01-18
NL7706161A (en) 1978-08-29
SU793376A3 (en) 1980-12-30
GB1533818A (en) 1978-11-29
IL52239A0 (en) 1977-08-31
JPS6055497B2 (en) 1985-12-05
ATA392777A (en) 1981-10-15
JPS53105423A (en) 1978-09-13
DD131013A5 (en) 1978-05-24
BE855257A (en) 1977-11-30
IL52239A (en) 1980-11-30
AT367014B (en) 1982-05-25
DE2708185C3 (en) 1981-06-04
IT1143581B (en) 1986-10-22
CH627430A5 (en) 1982-01-15
DE2708185A1 (en) 1978-08-31

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Legal Events

Date Code Title Description
ST Notification of lapse