A ternary complex reagent for an asymmetric Michael reaction of lithium ester enolates with enoates
作者:Yasutomo Yamamoto、Hirokazu Suzuki、Yorinobu Yasuda、Akira Iida、Kiyoshi Tomioka
DOI:10.1016/j.tetlet.2008.05.101
日期:2008.7
A lithium ester enolate was activated by both a chiral etheral ligand and a lithium amide to form a ternary complex reagent that reacted with enoates giving the corresponding Michael addition products in reasonably high enantioselectivity of up to 97% ee.
手性醚配体和酰胺化锂都激活了酯化的烯醇锂,形成了三元复合试剂,该试剂与烯酸酯反应,以相当高的对映选择性(高达97%ee)提供了相应的迈克尔加成产物。