作者:Laëtitia Palais、Lucille Babel、Adrien Quintard、Sébastien Belot、Alexandre Alexakis
DOI:10.1021/ol100441r
日期:2010.5.7
The first asymmetric Cu-catalyzed conjugate addition of dialkylzinc zinc reagents to a large scope of enals in presence of phosphoramidite, SimplePhos, or (R)-BINAP ligands with enantiomeric excesses up to 90% is reported. Moreover, ACA of Grignard reagents afforded moderate to good 1,4-regioselectivities with enantioselectivities up to 90%.
据报道,在亚磷酰胺,SimplePhos或(R)-BINAP配体的存在下,对映体过量最高达90%,二烷基锌锌试剂第一次向大范围的烯类中进行了不对称的Cu催化的共轭加成反应。此外,格氏试剂的ACA提供中等至良好的1,4-区域选择性,对映选择性高达90%。