Regioselective dehydroxytrifluoromethylthiolation of allylic and propargylic alcohols with AgSCF3
作者:Yin-Li Liu、Xiu-Hua Xu、Feng-Ling Qing
DOI:10.1016/j.tetlet.2019.02.045
日期:2019.4
reaction of easily available Morita–Baylis–Hillman (MBH) alcohols with AgSCF3 in the presence of n-Bu4NI and KI affords primary allylic SCF3 products in high yields and excellent regioselectivities. This regioselective dehydroxytrifluoromethylthiolation protocol could also be extended to propargylicalcohols for the preparation of the primary propargylic SCF3 products.
Synthesis of Allylic and Propargylic Trifluoromethyl Thioethers by Copper(I)-Catalyzed Trifluoromethylthiolation of Allylic Bromides and Propargylic Chlorides
copper(I)-catalyzed trifluoromethylthiolation of allylicbromides by using elemental sulfur and CF3SiMe3. This rate of this transformation was significantly accelerated in the presence of 18-crown-6, and the reaction afforded the desired products in moderate to excellent yields with high stereo- and regioselectivity. This method can tolerate a number of functional groups and provides facile access to a variety