BE899188A - PROCESS FOR THE PREPARATION OF ALPHA-DISUBSTITUTED MONOCARBOXYLIC ACIDS AND THEIR ESTERS. - Google Patents

PROCESS FOR THE PREPARATION OF ALPHA-DISUBSTITUTED MONOCARBOXYLIC ACIDS AND THEIR ESTERS.

Info

Publication number
BE899188A
BE899188A BE0/212586A BE212586A BE899188A BE 899188 A BE899188 A BE 899188A BE 0/212586 A BE0/212586 A BE 0/212586A BE 212586 A BE212586 A BE 212586A BE 899188 A BE899188 A BE 899188A
Authority
BE
Belgium
Prior art keywords
alpha
esters
preparation
monocarboxylic acids
disubstituted
Prior art date
Application number
BE0/212586A
Other languages
French (fr)
Inventor
R Gallo
H Grangette
S L Randriamahefa
Original Assignee
Elf France
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 Elf France filed Critical Elf France
Publication of BE899188A publication Critical patent/BE899188A/en

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
    • C07C51/347—Preparation of carboxylic acids or their salts, halides or anhydrides by reactions not involving formation of carboxyl groups

Landscapes

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

Abstract

Procédé de préparation d'acides monocarboxyliques disubstitués en alpha et de leurs esters par carboxylation d'un éther tertiaire à l'aide de l'acide formique ou d'un formiate d'alkyle en présence d'un acide protonique concentré. Parmi les ethers tertiaires le méthylterbutyléther (MTBE) et le méthylteramyléther (TAME) sont particulièrement intéressants.Process for the preparation of alpha-disubstituted monocarboxylic acids and their esters by carboxylation of a tertiary ether using formic acid or an alkyl formate in the presence of a concentrated protonic acid. Among the tertiary ethers, methylterbutylether (MTBE) and methylteramylether (TAME) are particularly interesting.

BE0/212586A 1983-03-21 1984-03-19 PROCESS FOR THE PREPARATION OF ALPHA-DISUBSTITUTED MONOCARBOXYLIC ACIDS AND THEIR ESTERS. BE899188A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR838304571A FR2543135B1 (en) 1983-03-21 1983-03-21 PROCESS FOR THE PREPARATION OF MONOCARBOXYLIC ACIDS DISUBSTITUTED IN A AND THEIR ESTERS

Publications (1)

Publication Number Publication Date
BE899188A true BE899188A (en) 1984-07-16

Family

ID=9287056

Family Applications (1)

Application Number Title Priority Date Filing Date
BE0/212586A BE899188A (en) 1983-03-21 1984-03-19 PROCESS FOR THE PREPARATION OF ALPHA-DISUBSTITUTED MONOCARBOXYLIC ACIDS AND THEIR ESTERS.

Country Status (8)

Country Link
JP (1) JPS59176229A (en)
BE (1) BE899188A (en)
CA (1) CA1204123A (en)
DE (1) DE3410202A1 (en)
FR (1) FR2543135B1 (en)
GB (1) GB2136808B (en)
IT (1) IT1173440B (en)
NL (1) NL8400866A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109438217B (en) * 2018-12-05 2021-07-16 大连奇凯医药科技有限公司 Preparation method of 2, 2-dimethylbutyric acid

Also Published As

Publication number Publication date
IT8420042A0 (en) 1984-03-13
NL8400866A (en) 1984-10-16
GB2136808B (en) 1986-01-22
FR2543135A1 (en) 1984-09-28
IT1173440B (en) 1987-06-24
CA1204123A (en) 1986-05-06
GB8407204D0 (en) 1984-04-26
FR2543135B1 (en) 1985-07-26
GB2136808A (en) 1984-09-26
JPS59176229A (en) 1984-10-05
DE3410202A1 (en) 1984-09-27

Similar Documents

Publication Publication Date Title
FR2564859B1 (en) PROCESS FOR THE PREPARATION OF HYALURONIC ACID BY FERMENTATION.
FR2434132B1 (en) PROCESS FOR PREPARING FLUOROVINYL ETHERS BY DEIODOFLUORATION OF IODINE-CONTAINING ETHERS
FR2543938B1 (en) PROCESS FOR THE PRODUCTION OF SULFURIC ACID BY THE CONTACT METHOD
BE882303A (en) PROCESS FOR PRODUCING METHACRYLIC ACID
FR2317356A1 (en) PROCESS FOR PREPARING AN ACID PROTEASE
RO86257A (en) PROCESS FOR THE PREPARATION OF D-LACTIC ACID
OA06973A (en) Process for the enzymatic preparation of 2-amino-4-methylphosphino-butiryque- (L) acid.
BE877206A (en) PROCESS FOR PREPARING OXALIC ACID ESTERS
BE899188A (en) PROCESS FOR THE PREPARATION OF ALPHA-DISUBSTITUTED MONOCARBOXYLIC ACIDS AND THEIR ESTERS.
FR2430423A1 (en) NEW PROCESS FOR THE PREPARATION OF 7- (SUBSTITUTED) AMINO-3-THIOMETHYL-3-CEPHEM-4-CARBOXYLIC ACIDS
BE813093A (en) PROCESS FOR PREPARING (METH) ACRYLIC ACID
BE892689A (en) NEW PROCESS FOR THE PREPARATION OF D-2 (6-METHOXY-2-NAPHTYL) -PROPIONIC ACID
RO79169A (en) PROCESS FOR THE PREPARATION OF ESTERS OF D-OR L-OSOPROPYL-2-PARACHLORPHENYLACETIC ACID
BE746202A (en) PROCESS FOR THE PREPARATION OF ACRYLIC ACID BY OXIDATION OF ACROLEIN
PT74767A (en) PROCESS FOR PREPARING NOVEL CARBOXYLIC PHENYL ALIPHATIC ACID DERIVATIVES
PT75230A (en) PROCESS FOR PREPARING STERES OF 3-METHYLFLAVONE-8-CARBOXYLIC ACID
BE880865A (en) PROCESS FOR THE PURIFICATION OF DICARBOXYLIC ACIDS OBTAINED BY FERMENTATION
FR2540861B1 (en) PROCESS FOR THE CATALYTIC PREPARATION OF A CARBOXYLIC ACID BY CARBONYLATION OF AN ALCOHOL
DE3466678D1 (en) Process for the preparation of 1,4-butane-dialdehyde
FR2506761B1 (en) CATALYTIC PROCESS FOR PRODUCING A CARBOXYLIC ACID ESTER BY CARBONYLATION OF AN OLEFIN IN THE PRESENCE OF AN ALCOHOL
FR2540862B1 (en) PROCESS FOR THE CATALYTIC PREPARATION OF A CARBOXYLIC ACID ANHYDRIDE BY CARBONYLATION
FR2566425B1 (en) PROCESS FOR THE PRODUCTION OF 2- (PHENYL SUBSTITUTED) PROPIONIC ACID BY MICROORGANISM
PT75595A (en) PROCESS FOR PREPARING ANTRANILIC ACID STERES
FR2531102B1 (en) PROCESS FOR THE EXTRACTION OF URANIUM FROM PHOSPHORIC ACIDS BY ALKYLPYROPHOSPHORIC ACIDS
FR2527598B1 (en) PROCESS FOR THE PREPARATION OF ACETIC ACID IN THE PRESENCE OF WATER

Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: ELF FRANCE

Effective date: 19910331