A Fast Catalytic Asymmetric Aza-Morita-Baylis-Hillman Reaction of<i>N</i>-Sulfonated Imines with Methyl Vinyl Ketone in the Presence of Chiral Bifunctional Phosphane Lewis Bases
作者:Zhi-Yu Lei、Guang-Ning Ma、Min Shi
DOI:10.1002/ejoc.200800321
日期:2008.8
A series of novel bifunctional chiral phosphane Lewis bases having one phenyl group and an electron-donating alkyl group on the phosphorus atom was designed and successfully synthesized. The use of these bifunctional chiral phosphane Lewis bases in catalytic asymmetric aza-Morita-Baylis-Hillman reactions (aza-MBH reactions) of N-sulfonated imines with methyl vinyl ketone affords the corresponding adducts
设计并成功合成了一系列在磷原子上具有一个苯基和一个给电子烷基的新型双功能手性磷烷路易斯碱。在 N-磺化亚胺与甲基乙烯基酮的催化不对称 aza-Morita-Baylis-Hillman 反应(aza-MBH 反应)中,使用这些双功能手性磷烷路易斯碱可以得到相应的加合物,产率良好至极好,中等至- 在室温下几小时内具有良好的对映选择性。据我们所知,这是迄今为止报道的最快的催化不对称 MBH 反应。((c) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)。