Process for preparing 4,4'-dinitrostilbene-2,2'-disulphonic acid

Details Process for preparing 4,4'-dinitrostilbene-2,2'-disulphonic acid Process for preparing 4,4'-dinitrostilbene-2,2'-disulphonic acid

1995-05-19

1996-12-10

Chan, Nicky

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

Organic compounds

Sulfonic acids or salts thereof

C07C30932

Patent

active

055832520

ABSTRACT:
The preparation of 4,4'-dinitrostilbene-2,2'-disulphonic acid by oxidation of 4-nitrotoluene-2-sulphonic acid with oxygen in alkaline medium in aqueous ether alcohol makes possible a simplified work-up.

REFERENCES:
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patent: 4719051 (1988-01-01), Guglielmetti
patent: 4952725 (1990-08-01), Lund et al.
patent: 5041632 (1991-08-01), Guglielmetti
Derwent Abstracts, Week 9521, General Chemistry-p. 3 JP 07082238 (1994).
Chem. Abstr., 41-Dyes, 157977d, vol. 106, 1987, p. 85.
Chem. Abstr., 45-Industrial Organics, 79944y, vol. 112, 1990, p. 147.

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