Patent · US Expired

Preparation of imidazole-2-carboxylic acids

US5117004A · kind A · utility

2Cited by

3References

7Claims

0Family size

Assignee

BASF SE

Inventors

Uwe Kempe · Schifferstadt, DE
Toni Dockner
Hermann Koehler · Beindersheim, DE

Key dates

Filing date	Feb 10, 1989
Grant date	May 26, 1992
Priority date	—
Expiry date	Feb 10, 2009

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D233/90
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

4,5-Disubstituted imidazole-2-carboxylic acids are prepared by reacting 4,5-disubstituted imidazoles with carbon dioxide under superatmospheric pressure at from 150.degree. to 300.degree. C. in the presence of a base.

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