Alkene homologation <i>via</i> visible light promoted hydrophosphination using triphenylphosphonium triflate
作者:Vitalij V. Levin、Alexander D. Dilman
DOI:10.1039/d0cc07025d
日期:——
A hydrophosphination reaction of alkenes with triphenylphosphonium triflate under photocatalytic conditions is described. The reaction is promoted by naphthalene-fused N-acylbenzimidazole and is believed to proceed through intermediate formation of a phosphinyl radical cation. The resulting phosphonium salts are directly involved in the Wittig reaction leading to homologated alkenes.
描述了在光催化条件下烯烃与三氟甲磺酸三苯基phosph的氢磷酸化反应。该反应由萘稠合的N-酰基苯并咪唑促进,并且据信通过膦酰基自由基阳离子的中间形成而进行。生成的phospho盐直接参与Wittig反应,从而生成同构的烯烃。