Title:
PRODUCTION OF AZOBIPHENYLCARBOXYLIC ACID
Document Type and Number:
Japanese Patent JPH10195034
Kind Code:
A
Abstract:
To efficiently obtain an azobiphenylcarboxylic acid useful as an intermediate, etc., for producing vat dye, etc., in high purity and yield by reacting nitrobiphenylcarboxylic acid with glucose aqueous solution at a prescribed temperature in an alkali aqueous solution.
A nitrobiphenylcarboxylic acid of formula I is reacted with glucose aqueous solution is reacted with glucose aqueous solution in alkali aqueous solution at ≥50°C, preferably 60-80°C to provide the objective azobiphenylcarboxylic acid of formula II. A molar ratio of dropped glucose to nitrobiphenylcarboxylic is preferably 0.7-2.1.
More Like This:
Inventors:
OKUMA TADASHI
OISHI YUJI
ITO NAOTO
OISHI YUJI
ITO NAOTO
Application Number:
JP572397A
Publication Date:
July 28, 1998
Filing Date:
January 16, 1997
Export Citation:
Assignee:
MITSUI CHEMICALS INC
International Classes:
C07C245/08; (IPC1-7): C07C245/08
Previous Patent: POLY(OXYALKYLENE)BENZYLAMINE ETHER AND FUEL COMPOSITION CONTAINING THE SAME ETHER
Next Patent: PRODUCTION OF ALIPHATIC NITRILE
Next Patent: PRODUCTION OF ALIPHATIC NITRILE