dialkylamides were prepared from the corresponding polymer-bound amines and butyllithium. The reagent was successfully employed as an in situ regenerating agent of a chiral lithium amide in a catalytic enantioselective rearrangement of meso-epoxides, and chiral allylic alcohols were obtained in up to 95% ee.
聚合物结合的二烷基酰胺
锂由相应的聚合物结合的胺和丁基
锂制备。该试剂成功地用作手性
氨基
锂的原位再生剂,用于催化内消旋
环氧化物的对映选择性重排,并获得高达 95% ee 的手性
烯丙醇。