作者:Nicolas Giuseppone、Pierre Van de Weghe、Mohamed Mellah、Jacqueline Collin
DOI:10.1016/s0040-4020(98)00791-1
日期:1998.10
Samarium diiodide is an efficient catalyst precursor which allows the formation of condensation products between various carbonyl compounds and ketene silyl acetals or enoxysilanes. With α,β-unsaturated carbonyl compounds, 1,2- or 1,4-additions are observed according to the structure of the substrate. α,β-Unsaturated ketones yield to enoxysilanes by selective Michael additions. Aldol poducts are isolated
二碘化is是一种有效的催化剂前体,它可使各种羰基化合物与乙烯酮甲硅烷基缩醛或环氧乙烷之间形成缩合产物。对于α,β-不饱和羰基化合物,根据底物的结构观察到1,2-或1,4-加成。通过选择性迈克尔加成,α,β-不饱和酮可生成环氧乙烷。醛醇缩合物被分离为甲硅烷基醚。讨论了反应机理。