Rh(I)‐Catalyzed Reaction of Trifluoromethylketone <i>N</i>‐Tosylhydrazones and Arylboronates

Abstract

Abstract Rh(I)‐Catalyzed synthesis of 1,1‐difluoro‐2,2‐diarylalkenes from trifluoromethylketone N ‐tosylhydrazones and arylboronates is presented in this communication. This new synthetic method is based on the Rh(I)‐carbene migratory insertion followed by β ‐fluoride elimination. In one particular case the protonation occurs instead of β ‐fluoride elimination, affording 2,2‐diaryl trifluoroethane product.