Processes for squaraine compounds

Details Processes for squaraine compounds Processes for squaraine compounds

1987-07-01

1990-10-30

Hines, Robert V.

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

C07C 8500

Patent

active

049670026

ABSTRACT:
A process for the preparation of squaraine compounds which comprises reacting an aromatic amine or mixtures of such amines with squaric acid or squaric acid derivatives in the presence of an aliphatic alcohol and a trialkylorthoformate.

REFERENCES:
patent: 4239904 (1980-12-01), Kesling, Jr.
patent: 4251667 (1981-02-01), Kesling, Jr.
patent: 4523035 (1985-06-01), Yanus
patent: 4524218 (1985-06-01), Baranyi et al.
patent: 4524220 (1985-06-01), Law
patent: 4552822 (1985-11-01), Kazmaier et al.
patent: 4559286 (1985-12-01), Kazmaier et al.

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