Free radical (phenylsulfonyl)difluoromethylation of alkynes with PhSO2CF2I reagent: stereoselective preparation of PhSO2CF2- and CF2H-substituted alkenes
作者:Ya Li、Huaifeng Li、Jinbo Hu
DOI:10.1016/j.tet.2008.11.011
日期:2009.1
Stereoselective freeradical (phenylsulfonyl)difluoromethylation of terminal alkynes with iododifluoromethyl phenyl sulfone (PhSO2CF2I) has been accomplished by using Et3B/air as an initiator. The obtained PhSO2CF2-substituted vinyl iodides, which can be further subjected to Suzuki coupling and Sonogashira coupling reactions, are useful precursors for the preparation of many structurally diverse PhSO2CF2-