Synthesis of new triphenodithiazine- and
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A. S. Hammam; M. S. K. Youssef; F. M. Atta; Th. A. Mohamed
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Article
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2007
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Versita
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English
β 185 KB
## Abstract Tetrabromo-p-benzoquinone reacted with excess aromatic amines to give 2,5-dirylamino-3,6-dibromo-p-benzoquinones. The latter molecules on heating with sodium sulfide in alcohol in the presence of air gave triphenodithiazinediones. Heating with copper powder in nitrobenzene transformed t