Organic compounds -- part of the class 532-570 series – Organic compounds – Sulfonic acids or salts thereof
Patent
1988-03-08
1990-08-28
Siegel, Alan
Organic compounds -- part of the class 532-570 series
Organic compounds
Sulfonic acids or salts thereof
C07C14324
Patent
active
049527258
ABSTRACT:
The present invention relates to an improved process for the preparation of 4,4'-dinitrostilbene-2,2'-disulfonic acid and its salts.
REFERENCES:
patent: 4719051 (1988-01-01), Guglielmetti
patent: 4734532 (1988-03-01), Kopp et al.
J. Org. Chem. 32 137-146 (1967).
Ladd Sam G.
Lund Richard B.
McConnell Wesley W.
Ciba-Geigy Corporation
Mansfield Kevin T.
Siegel Alan
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