Orthometallation of N-substituents at the NHC ligand of [Rh(Cl)(COD)(NHC)] complexes: its role in the catalytic hydrosilylation of ketones
作者:Guillermo Lázaro、Francisco J. Fernández-Alvarez、Julen Munárriz、Víctor Polo、Manuel Iglesias、Jesús J. Pérez-Torrente、Luis A. Oro
DOI:10.1039/c4cy01556h
日期:——
behavior could be attributable to the participation of different catalytic active species. Indeed, 1H NMR studies of the reaction of 2a with HSiMe(OSiMe3)2 evidenced the formation of a new hydrido-bridged binuclearcomplex, namely [Rh(SiMe(OSiMe3)2)(κ-C,C′-R-NHC-(CH2)3Si(OiPr)3)]2(μ-H)2} (R = 2-methoxyphenyl, 3), featuring orthometallated NHC and terminal silyl ligands, which has been proposed as the resting