Process for squaraine compositions

Details Process for squaraine compositions Process for squaraine compositions

1983-12-05

1985-06-25

Shaver, Paul F.

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

Organic compounds

Amino nitrogen containing

C07C 8500, C07C 8502, C07C 8506

Patent

active

045255920

ABSTRACT:
This invention relates to an improved process for the preparation of squaraine compositions which comprises reacting a dialkyl squarate, with an aniline, in the presence of an acid and an aliphatic alcohol, at a temperature of from about 60 degrees Centigrade to 160 degrees Centigrade.

REFERENCES:
White et al., "J.A.C.S.", 86, pp. 453-458, 2/64.
"The Chemistry of Squaraines", Schmidt, Oxocarbon, (1980), pp. 185-231.

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