Dual Catalysis with Copper and Rhenium for Trifluoromethylation of Propargylic Alcohols: Efficient Synthesis of α-Trifluoromethylated Enones
作者:Hiromichi Egami、Takafumi Ide、Masashi Fujita、Toshifumi Tojo、Yoshitaka Hamashima、Mikiko Sodeoka
DOI:10.1002/chem.201403447
日期:2014.9.15
Trifluoromethylation of propargylic alcohols to provide (Z)‐α‐trifluoromethylated enones and β‐unsubstituted α‐trifluoromethylated enones proceeded with high yield and selectivity in the presence of CuI/Re2O7. The Z isomer was formed under kinetic control, though it is less stable than the E isomer in terms of steric repulsion.
在CuI / Re 2 O 7存在下,炔丙醇进行三氟甲基化以提供(Z)-α-三氟甲基化的烯酮和β-未取代的α-三氟甲基化的烯酮。该ž异构体动力学控制下形成的,虽然它比少稳定ê在空间排斥方面异构体。