Regiospecific C-H bond activation: Reactivity study of N-heterocyclic silylene toward ambidentate phosphorus ylide

摘要

The reaction of two highly reactive species, the silylene [CH{C(Me)NAr}- {C(=CH_2)NAr}Si] (L, Ar = 2,6-iPr_2C_6H _3) and the phosphorus ylide MeC(O)CHPPh_3, resulted in the formation of 1, involving regiospecific C_(alkyl)-H bond activation. Compound 1 was characterized by elemental analysis and multinuclear NMR and unambiguously by single-crystal X-ray structural analysis.