Patent · US Expired

Manufacture of pent-3-enoic acid and its alkyl esters

US4550195A · kind A · utility

8Cited by

3References

9Claims

0Family size

Assignee

BASF SE

Inventors

Rolf Platz
Rudolf Kummer · Bischofswerda, DE
Heinz-Walter Schneider · Ludwigshafen, DE
Kurt Schwirten · Ludwigshafen, DE

Key dates

Filing date	Aug 21, 1981
Grant date	Oct 29, 1985
Priority date	—
Expiry date	Aug 21, 2001

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C51/14
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process for the manufacture of pent-3-enoic acid and its alkyl esters, of the general formula EQU CH.sub.3 --CH.dbd.CH--CH.sub.2 --CO--OR where R is hydrogen or alkyl of 1 to 4 carbon atoms, comprising carbonylating butadiene with carbon monoxide and a compound ROH at from 300 to 1,000 bars CO pressure and from 100.degree. to 160.degree. C. in the presence of cobalt catalysts and nitrogen bases, wherein C.sub.4 cuts are used as starting materials and a tertiary amine having a pK.sub.A of from 3 to 11 is used as the nitrogen base. The pent-3-enoic acid or alkyl esters produced may be used for the manufacture of adipic acid or its alkyl esters, which compounds are starting materials for the manufacture of nylons.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.