Synthesis of pyrazole dyes

Details Synthesis of pyrazole dyes Synthesis of pyrazole dyes

1991-07-31

1992-09-01

Dees, Jose G.

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

Organic compounds

Azo

534792, 534768, 534766, 534765, 534791, 534753, C09B 29036, C09B 2909, C09B 2930, C09B 2936

Patent

active

051440156

ABSTRACT:
A process for preparing a 1-alkyl-3-secondary or tertiary alkyl-4-cyano-pyrazol-5-yl azo dye or a 1-alkyl-3-aryl-4-cyano-pyrazol-5-yl azo dye comprising:

REFERENCES:
patent: 3133051 (1964-05-01), Dreyer et al.
patent: 3336285 (1967-08-01), Towne et al.
patent: 3639384 (1972-02-01), Wearer et al.
patent: 4764600 (1988-08-01), Bergmann et al.
Saunders, W. B., Chemistry of Organic Compounds 1957, pp. 479, 199.

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