Title:
PRODUCTION OF 6-CHLOROPYRIDINE-2,3-DICARBOXYLIC ACID AND HETEROCYCLIC DICARBOXYLIC ACID
Document Type and Number:
Japanese Patent JPH01246260
Kind Code:
A
Abstract:
NEW MATERIAL:6-Chloropyridine-2,3 dicarboxylic acid.
USE: A raw material for heat-sensitive and pressure-sensitive dyestuff, drugs or agricultural chemicals, etc.
PREPARATION: A heterocyclic compound shown by formula I (X is C or N; R is H, 1-4C alkyl or halogen with the proviso that R is not H when X is C and benzene ring A may contain substituent group not influencing a reaction) is oxidized with ruthenium tetroxide under a basic condition to give a heterocyclic dicarboxylic acid (6-chloropyridine-2,3-dicarboxylic acid as a novel one in the acids) shown by formula II.
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Inventors:
HORIUCHI KENICHIRO
MATSUMOTO MANSUKE
MATSUMOTO MANSUKE
Application Number:
JP7287388A
Publication Date:
October 02, 1989
Filing Date:
March 25, 1988
Export Citation:
Assignee:
YAMAMOTO CHEMICALS INC
International Classes:
C07D213/80; C07D213/807; (IPC1-7): C07D213/80
Attorney, Agent or Firm:
Makino Itsuro
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