PRODUCTION OF 2,6-(4,4'-DIAMINO-DIPHENYL)BENZO(1,2-D:4,5-D')BISTHIAZOLE

Title:

PRODUCTION OF 2,6-(4,4'-DIAMINO-DIPHENYL)BENZO(1,2-D:4,5-D')BISTHIAZOLE

Document Type and Number:

Japanese Patent JPH01316386

Kind Code:

A

Abstract:

PURPOSE: To obtain the present substance as a raw material for aromatic heterocyclic polymers in high purity by reacting a diaminobenzenedithiol.dihydrochloride with p-aminobenzoic acid using a mixture containing methanesulfonic acid and phosphorus pentoxide as a reaction medium.

CONSTITUTION: 2,5-Uiamino-1,4-benzenedithiol.dihydrochloride is reacted with p-aminobenzoic acid using a mixture containing methanesulfonic acid and phosphorus pentoxide as a reaction medium to afford the objective compound expressed by the formula. Furthermore, the mixing ratio of the methanesulfonic acid to the phosphorus pentoxide is preferably (20/1)-(5/1) weight ratio.

Inventors:

MUKAI SEIICHI
KIMURA MASATOSHI
TAYAMA TAKAROU
NOZAWA SEIICHI

Application Number:

JP6562788A

Publication Date:

December 21, 1989

Filing Date:

March 22, 1988

Export Citation:

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Assignee:

AGENCY IND SCIENCE TECHN

International Classes:

C07D513/04; C08G73/10; C08G75/00; C08G75/32; (IPC1-7): C07D513/04; C08G73/10; C08G75/32

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