ChemInform Abstract: Synthesis and Structure of Some 1-Triazeno-9,10-anthraquinones.
โ Scribed by N. A. Bulgakova; L. M. Gornostaev; V. T. Sakilidi
- Publisher
- John Wiley and Sons
- Year
- 2010
- Weight
- 27 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0931-7597
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Heterocyclizations of 1,4-Diazido-2,3-diarylthio-9,10-anthraquinones. -Diazidoanthraquinones of type (II) undergo stepwise thermic cyclization. Under mild conditions, the phenothiazines (III) are obtained, whereas in refluxing toluene both azido groups participate in cyclizations to give oxazolo an