IMPROVED PRODUCTION OF BIARYL DERIVATIVE

Title:

IMPROVED PRODUCTION OF BIARYL DERIVATIVE

Document Type and Number:

Japanese Patent JPH05178790

Kind Code:

A

Abstract:

PURPOSE: To provide an improved process for producing a biaryl deriv. by reduction coupling of an aryl halide compd.

CONSTITUTION: The aryl halide (for example, 4-bromophthalic acid) is coupled by using hydrazide formate as a reducing agent in the presence of a palladium catalyst in an aq. alkaline soln., by which the biaryl deriv. 3,3',4,4'- biphenyltetracarboxylic acid is produced.

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Inventors:

EIBURAMU BETSUKAA
ARIERU ADAMU EUINSON
BAASA KUROITORU

Application Number:

JP12902492A

Publication Date:

July 20, 1993

Filing Date:

May 21, 1992

Export Citation:

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Assignee:

BROMINE COMPOUNDS LTD

International Classes:

B01J27/053; C07B37/00; C07B37/04; C07B61/00; C07C1/26; B01J23/44; C07C37/18; C07C41/30; C07C51/04; C07C51/347; C07C63/333; C07C253/30; (IPC1-7): B01J23/44; B01J27/053; C07B61/00; C07C51/04; C07C63/333

Attorney, Agent or Firm:

Aoki Akira (3 outside)

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