Trityl Cation-Catalyzed Hosomi-Sakurai Reaction of Allylsilane with β,γ-Unsaturated α-Ketoester to Form γ,γ-Disubstituted α-Ketoesters
作者:Zubao Gan、Deyun Cui、Hongyun Zhang、Ying Feng、Liying Huang、Yingying Gui、Lu Gao、Zhenlei Song
DOI:10.3390/molecules27154730
日期:——
(Ph3C)[BPh(F)4]-catalyzed Hosomi-Sakurai allylation of allylsilanes with β,γ-unsaturated α-ketoesters has been developed to give γ,γ-disubstituted α-ketoesters in high yields with excellent chemoselectivity. Preliminary mechanistic studies suggest that trityl cation dominates the catalysis, while the silyl cation plays a minor role.
(Ph 3 C)[BPh( F ) 4 ]-催化的 Hosomi-Sakurai 烯丙基硅烷与 β,γ-不饱和 α-酮酯的烯丙基化反应以高产率和优异的化学选择性得到 γ,γ-二取代的 α-酮酯。初步机理研究表明,三苯甲基阳离子在催化作用中起主导作用,而甲硅烷基阳离子起次要作用。