Regioselective Rhodium-Catalyzed Addition of 1,3-Dicarbonyl Compounds to Terminal Alkynes
作者:Thorsten M. Beck、Bernhard Breit
DOI:10.1021/acs.orglett.5b03391
日期:2016.1.4
A new method for the rhodium-catalyzed regioselective C–C bond formation using terminal alkynes and 1,3-dicarbonyl compounds to achieve valuable branched α-allylated 1,3-dicarbonyl products is reported. With a Rh(I)/DPEphos/p-CF3-benzoic acid as the catalyst system, the desired products can be obtained in good to excellent yields and with perfect regioselectivity. A broad range of functional groups
报道了一种使用末端炔烃和1,3-二羰基化合物形成铑催化的区域选择性C–C键的新方法,以实现有价值的支链α-烯丙基化1,3-二羰基产物。用Rh(I)/ DPEphos /对-CF 3-苯甲酸作为催化剂体系,可以以良好至极好的产率和完美的区域选择性获得所需的产物。宽泛的官能团是可以容忍的,并且首次获得了对合理的反应机理的实验见解。