Silylation of N-heterocyclic carbene with aminochlorosilane and -disilane: dehydrohalogenation vs. Si–Si bond cleavage

Abstract

Reactions of the aminochlorosilane RSiHCl₂ and disilane R₂Si₂HCl₃ (R = (2,6-iPr₂C₆H₃)(SiMe₃)N) with an excess of 1,3-bis(tert-butyl)imidazol-2-ylidene resulted in the silylation of the NHC while reaction with the less hindered 1,3-diisopropyl-4,5-dimethyl-imidazol-2-ylidene yielded an NHC-stabilized aminochlorosilylene.