Process for the preparation of 4,4'-dinitrostilbene-2,2-disulfon

Organic compounds -- part of the class 532-570 series – Organic compounds – Sulfonic acids or salts thereof

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C07C30700

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050416324

ABSTRACT:
A process is described for the preparation of 4,4'-dinitrostilbene-2,2'-disulfonic acid by oxidation of 4-nitrotoluene-2-sulfonic acid by using liquid, anhydrous ammonia, a liquid alkyl derivative of ammonia or a mixture of ammonia and/or the alkyl derivatives of ammonia with water as the solvent.

REFERENCES:
patent: 4680146 (1987-07-01), Skipka et al.
patent: 4719051 (1988-01-01), Guglielmetti
Chemische Berichte vol. 30, pp. 3097-3101 (1897); vol. 31, p. 1079 (1898).
Chemisches Zentralblatt vol. 1900 I, 1085.
Chemisches Zentralblatt vol. 1900 II, 703.
C.A. 83, 113,377k (1975).
C.A. 85, 192,288z, 192,289a, 192,290u (1976).
C.A. 86, 16029c (1977).
Chimie Analytique 50, pp. 251-254 (1968).
Chemie et Industrie, Genie Chimique 101, pp. 1439-1447 (1969).

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