An improved procedure for the oxidative transformation of hydroanthracenones and hydronaphthacenones to hydroxyanthraquinones and …

…, C Takeuchi, H Yin, SA Corlett

文献索引：Hauser, Frank M.; Takeuchi, Craig; Yin, Htwe; Corlett, Stephen A. Journal of Organic Chemistry, 1994 , vol. 59, # 1 p. 258 - 259

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被引用次数: 13

摘要

We have previously shown that hydroanthracenones la-e1 and hydronaphthacenone 3, 2 prepared through condensation of phenylsulfonyl isobenz~ furanones~ with cyclohexenonea and naphthalenones, are useful precursors to hydroxyanthraquinones 2a-e and the anthracyclinone intermediate 4. Earlier, we reported that sequential reaction of 1 with NBS in waterlacetone followed by treatment with Et3N furnished 2 in high yield.'While ...