A novel effective electrophile: beta-trifluoroacetylketene diphenyldithioacetal S,S-tetroxideстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:A synthesis of a novel electrophilic reagent-beta-trifluoroacetylketene diphenyldithioacetal S,S-tetroxide 3 is described. The reaction of 3 with various electron-rich aromatics such as 1,3-dimethoxybenzene, 2-methylthiophene, N-methylpyrrole, and 2-methylindole was investigated. In the course of these reactions an unusual migration of a phenylsulfonyl group takes place. An easy and ready for scale-up procedure for the synthesis of previously unknown beta-aryl, alpha-phenylsulphonyl substituted alpha,beta-unsaturated trifluoromethyl ketones is reported. (C) 2003 Elsevier Ltd. All rights reserved.