公开(公告)号：DE3581453D1

公开(公告)日：1991-02-28

申请号：DE3581453

申请日：1985-07-16

Applicant: BASF AG

Inventor： KEMPE UWE DR ,  DOCKNER TONI DR ,  SCHLICK ROLF

IPC: C07D233/60 ,  C07D233/66 ,  C07D233/90

Abstract: Imidazole-4(5)-monocarboxylic acids and their salts or betaines are prepared by reacting an imidazole with carbon dioxide and an alkali metal carbonate, an alkali metal bicarbonate and/or an alkali metal hydroxide at from 140 DEG to 230 DEG C. and under from 2 to 350 bar and, if desired, then reacting the product with an acid. The imidazole-4(5)-monocarboxylic acids which can be prepared by the process of the invention are useful starting materials for the preparation of dyes, crop protection agents and drugs.

公开(公告)号：DE3427136A1

公开(公告)日：1986-02-06

申请号：DE3427136

申请日：1984-07-24

Applicant: BASF AG

Inventor： KEMPE UWE DR ,  DOCKNER TONI DR ,  SCHLICK ROLF

IPC: C07D233/60 ,  C07D233/66 ,  C07D233/90

Abstract: Imidazole-4(5)-monocarboxylic acids and their salts or betaines are prepared by reacting an imidazole with carbon dioxide and an alkali metal carbonate, an alkali metal bicarbonate and/or an alkali metal hydroxide at from 140 DEG to 230 DEG C. and under from 2 to 350 bar and, if desired, then reacting the product with an acid. The imidazole-4(5)-monocarboxylic acids which can be prepared by the process of the invention are useful starting materials for the preparation of dyes, crop protection agents and drugs.