Diastereoselective Synthesis of CF3-Substituted, Epoxide-Fused Heterocycles with β-(Trifluoromethyl)vinylsulfonium Salts
摘要:
CF3-substituted vinyl diphenylsulfonium triflate is an effective annulation reagent for the formation of alpha-CF3 substituted, epoxide-fused heterocycles (pyrrolidines, piperidines, and tetrahydrofurans). This simple method affords a variety of valuable heterocyclic building blocks in a highly diastereoselective manner (dr>20:1).