- Thionation of anthrone with sulfur
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The reaction of anthrone with sulfur at room temperature in DMF in the presence of catalytic amounts of pyridine afforded alongside oxidation and dimerization products also thionated compound, monothioanthraquinone.
- Loskutov
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p. 528 - 530
(2007/10/03)
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- Reaction of anthrone and its 1- and 4-substituted derivatives with sulfur in the presence of nucleophiles
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Anthrone and its 1-substituted derivatives react with molecular sulfur in the presence of nucleophiles (aromatic amines, hydrazine, substituted hydrazines, and malononitrile) to give intermediate monothioanthraquinones which are then converted into mixtures of the corresponding anthraquinones and 10-imino-, 10-hydrazono-, or 10-dicyanomethylene-9,10-dihydroanthracen-9-ones. Unlike 1-substituted derivatives, 4-substituted anthrones react with sulfur in the presence of phenylhydrazine to give only 1-substituted anthraquinones.
- Loskutov
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p. 1478 - 1481
(2007/10/03)
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