Asymmetric organocatalytic Michael/α-alkylation reaction of α,β-unsaturated aldehyde with chloroacetophenone
作者:Wenjun Li、Xin Li、Tingting Ye、Wenbin Wu、Xinmiao Liang、Jinxing Ye
DOI:10.1016/j.tetlet.2011.03.079
日期:2011.5
Asymmetric organocatalytic Michael/α-alkylation reactions of α,β-unsaturated aldehydes with chloroacetophenones have been developed. The biologically useful cyclopropane motifs were synthesized with high yields and up to >99% ee, >30:1 dr through Jørgensen–Hayashi catalyst under mild conditions.
已经开发出α,β-不饱和醛与氯苯乙酮的不对称有机催化Michael /α-烷基化反应。通过Jørgensen-Hayashi催化剂在温和的条件下,合成了生物学上有用的环丙烷基序,收率高,ee高达99%以上,ee大于30:1。