Sun Gui-chun
2009
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Journal
Tianjin Chemical Industry
Abstract
Acid red S-GN was synthesized.After the diazotization of 2-amino-4-chlorophenol,the product coupled with 1-(4′-sulfophenyl)-3-methyl-5-pyrazolone and 1-phenyl-3-methyl-5-pyrazolone yielding azo compound I and II respectively.Azo compound I reacted with chromium trioxide gaining metallined compound III.The asymmetric metalline dye acid red S-GN was obtained by the reaction of the compound III with the compound II in alkalescent condition.This essay introduced the molecular structure and synthetic route of the dyestuff.