Thermolytic ring closure reactions of 4??azido??3??phenylsulfanyl??and 4??azido??3??phenylsulfonyl??2??quinolones to 12H??quinolino??[3, 4??b][1, 4] benzothiazin??6 (5H)?? …

…, K Langhans, T Kappe, W Stadlbauer

文献索引：Taeubl, Anna E.; Langhans, Klaus; Kappe, Thomas; Stadlbauer, Wolfgang Journal of Heterocyclic Chemistry, 2002 , vol. 39, # 6 p. 1259 - 1264

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被引用次数: 10

摘要

Abstract 4-Hydroxy-3-phenylsulfanyl-2-quinolones 2 and 4-hydroxy-3-sulfonyl-2-quinolones 7, which are readily accessible from 4-hydroxy-2-quinolones 1 and diphenyldisulfide or thiophenol, can be converted to 4-azido-3-phenylsulfanyl-2-quinolones 10 or 4-azido-3- phenylsulfonyl-2-quinolones 12 via 4-chloro-3-phenylsul-fanyl-2-quinolones 5 or 4-chloro-3- phenylsulfonyl-2-quinolones 9, respectively. Thermolysis of the azides 10 and 12 results ...