Dehydrogenative coupling of cyclic enones with heteroarenes has been a longstanding challenge because of the competitive ketone dehydrogenation and conjugated addition. Herein, a dehydrogenative couplingreaction of cyclic enones of different sizes with substituted thiophenes to construct β-thienyl cyclic enone compounds through palladium-catalyzed C–H functionalization under mild reaction conditions is
Silver-catalyzed direct couplings of 2-substituted furans with cyclic 1,3-dicarbonyls
作者:Antonio Arcadi、Maria Alfonsi、Fabio Marinelli
DOI:10.1016/j.jorganchem.2007.08.011
日期:2007.11
Direct alkenylation of 2-substituted furans with cyclic 1;3-dicarbonyls by means of silver catalysis have been explored. Silver salts resulted more efficient than a variety of Lewis acids and p-TsOH. (c) 2007 Elsevier B.V. All rights reserved.