Stereoselective Synthesis of α-Trifluoromethyl Enones by Au<sup>I</sup>/Cu<sup>I</sup>-Co-Catalyzed Tandem 1,3-Acyloxy Migration/Trifluoromethylation Reaction of Propargyl Acetates
作者:Yun-Long Ji、Jin-Hong Lin、Ji-Chang Xiao、Yu-Cheng Gu
DOI:10.1002/ejoc.201403115
日期:2014.12
AuI/CuI-co-catalyzed tandem 1,3-acyloxy migration/trifluoromethylation reaction of propargyl esters to give α-trifluoromethyl enones in moderate yields and with excellent stereoselectivity is described. It is proposed that the reaction proceeds through the 1,3-acyloxy migration of the propargyl esters catalyzed by AuI to produce an allenic intermediate, followed by its trifluoromethylation to give
描述了 AuI/CuI 共催化的炔丙酯串联 1,3-酰氧基迁移/三氟甲基化反应,以中等产率和优异的立体选择性得到 α-三氟甲基烯酮。提出该反应通过由 AuI 催化的炔丙酯的 1,3-酰氧基迁移进行以产生丙二烯中间体,然后通过其三氟甲基化得到最终产物。