Catalytic deuteration of silanes mediated by N-heterocyclic carbene-Ir(iii) complexes
作者:George C. Fortman、Heiko Jacobsen、Luigi Cavallo、Steven P. Nolan
DOI:10.1039/c1cc13492b
日期:——
The catalytic activity of a series of coordinatively unsaturated NHC-M(III) (M = Rh, Ir; NHC = N-heterocycliccarbene) complexes was tested in the deuteration of secondary and tertiary silanes. Among these, [IrCl(I(t)Bu')(2)] provides the highest conversions to the deuterated species. Mechanisticstudies highlight the reversible nature of the ortho-metalation reaction.
Silyl–pyridine–amine pincer-ligated iridium complexes for catalytic silane deuteration <i>via</i> room temperature C–D bond activation of benzene-<i>d</i><sub>6</sub>
Iridium–hydrido complexes bearing a hemilabile silyl–pyridine–amine pincer ligand were synthesised. They were found to catalyse Si–H deuteration of trialkylsilanes with excess benzene-d6 in 99–94% conversion at room temperature through C–D bondactivation and H/Dexchange.