作者:Richard T. Taylor、James G. Galloway
DOI:10.1016/s0022-328x(00)82282-2
日期:1981.11
Reactions of α,β-unsaturated carbonyl compounds with Me3SiCH2MgCl, prepared from chloromethyltrimethylsilane [1], were examined. Unlike its lithium counterpart (Me3SiCH2Li), which adds to α,β-unsaturatedketones in the 1,2-sense, the Grignard reagent afforts γ silanes via a 1,4-addition sequence. This tendency is accentuated by the addition of Cu2Br2. Addition of the Grignard reagent to α,β-unsaturated
考察了α,β-不饱和羰基化合物与由氯甲基三甲基硅烷[1]制得的Me 3 SiCH 2 MgCl的反应。不同于其锂对应物(Me 3 SiCH 2 Li),后者会在1,2-感官中添加α,β-不饱和酮,格氏试剂通过1,4-添加序列促进γ硅烷的合成。通过添加Cu 2 Br 2加剧了这种趋势。将格氏试剂添加到α,β-不饱和醛中可得到简单的1,2-加成产物。