Novel efficient synthesis of beta-fluoro-beta-(trifluoromethyl)styrenesстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:CF(3)CFBr(2) was employed in catalytic olefination reactions of aromatic aldehydes. In situ prepared hydrazones of aldehydes were transformed to beta-fluoro-beta-(trifluoromethyl)styrenes by reaction with CF(3)CFBr(2) under CuCl catalysis. Based on this reaction, a novel stereoselective approach towards beta-fluoro-beta-(trifluoromethyl)styrenes was elaborated. Nucleophilic vinylic substitution of fluorine by secondary amines, thiolates and alkoxides in beta-fluoro-beta-(trifluoromethyl)styrenes was also tested. (C) 2009 Elsevier B.V. All rights reserved.