Catalytic Difunctionalization of Unactivated Alkenes with Unreactive Hexamethyldisilane through Regeneration of Silylium Ions
作者:Qian Wu、Avijit Roy、Elisabeth Irran、Zheng‐Wang Qu、Stefan Grimme、Hendrik F. T. Klare、Martin Oestreich
DOI:10.1002/anie.201911282
日期:2019.11.25
A metal-free, intermolecular syn-addition of hexamethyldisilane across simple alkenes is reported. The catalytic cycle is initiated and propagated by the transfer of a methyl group from the disilane to a silylium-ion-like intermediate, corresponding to the (re)generation of the silylium-ion catalyst. The key feature of the reaction sequence is the cleavage of the Si-Si bond in a 1,3-silyl shift from