Highly Efficient Asymmetric Epoxidation of Electron-Deficient α,β-Enones and Related Applications to Organic Synthesis
作者:Changwu Zheng、Yawen Li、Yingquan Yang、Haifeng Wang、Haifeng Cui、Junkang Zhang、Gang Zhao
DOI:10.1002/adsc.200900041
日期:2009.7
The asymmetric epoxidation of electron‐deficient olefins has been achieved using inexpensive and readily available prolinols as catalysts with good to excellent yields and enantioselectivities. The utility of the resulting chiral epoxides was illustrated by elaboration to several synthetically useful compounds featuring a concise synthesis of (−)‐(5R,6S)‐balasubramide.
使用价格低廉,易于获得的脯氨醇作为催化剂,可以实现电子不足的烯烃的不对称环氧化,其收率和对映选择性都非常好。详细阐述了几种合成有用的化合物,这些化合物以(-)-(5 R,6 S)-巴拉苏酰胺的简明合成为例,说明了所得手性环氧化物的实用性。