Patent · US Expired

Process for the preparation of .DELTA. 3-tetrahydrobenzoic acid- .DELTA. 3-tetrahydrobenzyl ester

US4721804A · kind A · utility

0Cited by

4References

11Claims

0Family size

Assignee

Degussa AG · DE

Inventors

Guenter Prescher · Hanau, DE
Andreas Grund · Darmstadt, DE
Heinrich Petsch · Hanau, DE
Georg Boehme · Rodenbach, DE

Key dates

Filing date	Apr 1, 1986
Grant date	Jan 26, 1988
Priority date	—
Expiry date	Apr 1, 2006

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C69/75
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The continuous preparation of .DELTA. 3-tetrahydrobenzoic acid- .DELTA. 3-tetrahydrobenzyl ester by reaction of 3-cyclohexene-1-carboxaldehyde is disclosed. The reaction is carried out in the presence of an aluminum mixed alcoholate, in which half of the alcohol components consists of isopropylate groups and the other half of sec-butylate groups.

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