Spontaneous Hydrosilylation of Substituted C=N Imines

Abstract

4-Methoxy and 2,4-di-tBu substituted C,N-chelating ligands 2-[(2,6-iPr(2)-C6H3)N=CH]-4-MeO-C6H3}(-) and {2-[(2,6-iPr(2)-C6H3)N=CH]-4,6-tBu(2)-C6H3}(-) and also {2-[(2,6-Me-2-C6H3)N=C(Me)]-C6H4}(-) and {2-[(2,6-iPr(2)-C6H3)N=C(Me)]-5,6-OCH2O-C6H2}(-) containing Me substituted imine group were used for the preparation of intramolecularly coordinated organohydridosilanes L1-4PhnSiH4-n and (LSiHCl2)-Si-1. The spontaneous hydrosilylation reaction occurs very quickly in L1-4PhnSiH4-n and hydrosilylated products are formed. In contrast, the isolation of (LSiHCl2)-Si-1 allows us to study kinetics of the hydrosilylation.