FR2357519A1 - PROCESS FOR THE PREPARATION OF ISOBUTYRIC ACID - Google Patents

PROCESS FOR THE PREPARATION OF ISOBUTYRIC ACID

Info

Publication number
FR2357519A1
FR2357519A1 FR7713200A FR7713200A FR2357519A1 FR 2357519 A1 FR2357519 A1 FR 2357519A1 FR 7713200 A FR7713200 A FR 7713200A FR 7713200 A FR7713200 A FR 7713200A FR 2357519 A1 FR2357519 A1 FR 2357519A1
Authority
FR
France
Prior art keywords
acid
isobutyric acid
preparation
optionally
isobutyric
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.)
Withdrawn
Application number
FR7713200A
Other languages
French (fr)
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.)
Roehm GmbH Darmstadt
Original Assignee
Roehm GmbH Darmstadt
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 Roehm GmbH Darmstadt filed Critical Roehm GmbH Darmstadt
Publication of FR2357519A1 publication Critical patent/FR2357519A1/en
Withdrawn legal-status Critical Current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
    • C07C51/10—Preparation of carboxylic acids or their salts, halides or anhydrides by reaction with carbon monoxide
    • C07C51/12—Preparation of carboxylic acids or their salts, halides or anhydrides by reaction with carbon monoxide on an oxygen-containing group in organic compounds, e.g. alcohols

Abstract

On prépare l'acide isobutyrique par carbonylation en présence d'un catalyseur contenant un sel d'un métal du groupe VIII du tableau périodique des éléments. Le procédé consiste à faire réagir le monoxyde de carbone sur un ester isopropylique en présence d'un iodure et d'un sel de fer, de nickel ou de préférence de cobalt, éventuellement en présence d'eau et/ou d'un acide organique, et éventuellement sous pression d'hydrogène. Les produits obtenus contiennent peu d'acide butyrique par rapport à l'acide isobutyrique; l'intérêt technique de l'acide isobutyrique repose sur la possibilité de le transformer en acide méthacrylique par déhydrogénation.Isobutyric acid is prepared by carbonylation in the presence of a catalyst containing a salt of a metal from group VIII of the periodic table of the elements. The process consists in reacting carbon monoxide with an isopropyl ester in the presence of an iodide and of an iron, nickel or preferably cobalt salt, optionally in the presence of water and / or an organic acid. , and optionally under hydrogen pressure. The products obtained contain little butyric acid relative to isobutyric acid; the technical interest of isobutyric acid is based on the possibility of transforming it into methacrylic acid by dehydrogenation.

FR7713200A 1976-07-06 1977-05-02 PROCESS FOR THE PREPARATION OF ISOBUTYRIC ACID Withdrawn FR2357519A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762630235 DE2630235A1 (en) 1976-07-06 1976-07-06 PROCESS FOR THE PRODUCTION OF ISOBUTTER ACID

Publications (1)

Publication Number Publication Date
FR2357519A1 true FR2357519A1 (en) 1978-02-03

Family

ID=5982269

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7713200A Withdrawn FR2357519A1 (en) 1976-07-06 1977-05-02 PROCESS FOR THE PREPARATION OF ISOBUTYRIC ACID

Country Status (7)

Country Link
JP (1) JPS537611A (en)
BE (1) BE856559A (en)
DE (1) DE2630235A1 (en)
FR (1) FR2357519A1 (en)
GB (1) GB1534244A (en)
IT (1) IT1109130B (en)
NL (1) NL7707055A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2377368A1 (en) * 1977-01-14 1978-08-11 Roehm Gmbh Isobutyric acid by carbonylation of isopropyl ester(s) - using catalyst contg. halogen and platinum or palladium

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4320230A (en) * 1979-09-24 1982-03-16 Exxon Research & Engineering Co. Methanol homologation using iron-cobalt carbonyl cluster catalyst
JP2526614B2 (en) * 1987-12-21 1996-08-21 三菱瓦斯化学株式会社 Method for producing isobutyric acid

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2377368A1 (en) * 1977-01-14 1978-08-11 Roehm Gmbh Isobutyric acid by carbonylation of isopropyl ester(s) - using catalyst contg. halogen and platinum or palladium

Also Published As

Publication number Publication date
IT1109130B (en) 1985-12-16
NL7707055A (en) 1978-01-10
GB1534244A (en) 1978-11-29
JPS537611A (en) 1978-01-24
BE856559A (en) 1977-10-31
DE2630235A1 (en) 1978-01-19

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Legal Events

Date Code Title Description
RE Withdrawal of published application