Copper-catalyzed synthesis of gem-difluoroallylboronates from α-trifluoromethyl alkenes and B2pin2

Abstract A novel and efficient method for the synthesis of gem -difluoroallylboronates via copper-catalyzed defluorinative borylation of α-trifluoromethyl alkenes with B 2 pin 2 using Xantphos as ligand and NaO t Bu as base was developed.