Tandem reactions catalyzed by lanthanide iodides. Part 1: Tandem Mukaiyama–Michael iminoaldol reactions
作者:Nada Jaber、Martine Assié、Jean-Claude Fiaud、Jacqueline Collin
DOI:10.1016/j.tet.2004.01.081
日期:2004.3
Mukaiyama–Michael addition of a ketene silyl acetal on a cyclic α,β-unsaturated ketone, followed by the addition of a glyoxylic, aromatic or heteroaromatic imine. According to the nature of the silyl group the adducts resulting from this tandem process are isolated as ketones or as enoxysilanes. The presence of a coordinating group on the imine increases the rate of the reaction.
io二碘化物和镧系三碘化物催化一锅法,从而允许在环状α,β-不饱和酮上依次进行Mukaiyama-Michael加成烯酮甲硅烷基缩醛,然后再加入乙醛酸,芳族或杂芳族亚胺。根据甲硅烷基的性质,将这种串联过程产生的加合物分离为酮或环氧硅烷。亚胺上配位基团的存在增加了反应速率。