Patent · US Expired

Preparation of products of the reduction of 4-hydroxybutyric acid derivatives

US5371242A · kind A · utility

1Cited by

4References

5Claims

0Family size

Assignee

BASF SE

Inventors

Hans-Juergen Weyer · Mannheim, DE
Rolf Fischer · Heidelberg, DE
Werner Schnurr · Herxheim, DE
Norbert Goetz
Thomas Kuekenhoehner · Bischofswerda, DE

Key dates

Filing date	Aug 23, 1993
Grant date	Dec 6, 1994
Priority date	—
Expiry date	Aug 23, 2013

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C31/274
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Abstract of the Disclosure: Products of the reduction of 4-hydroxybutyric acid derivatives of the formula IIa ##STR1## where one of A and B is methylene and the other is cyclopropylidene, or of C.sub.1 --C.sub.4 --alkyl esters (IIb) or lactones (IIc) of these acids IIa, are prepared by hydrogenating the compounds IIa or IIb or IIc catalytically using hydrogen in the presence of a heterogeneous hydrogenation catalyst, giving novel compounds which can be used to prepare polymers.

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