Highly Enantioselective Rh-Catalyzed Alkenylation of Imines: Synthesis of Chiral Allylic Amines via Asymmetric Addition of Potassium Alkenyltrifluoroborates to <i>N</i>-Tosyl Imines
作者:Balraj Gopula、Chien-Wei Chiang、Way-Zen Lee、Ting-Shen Kuo、Ping-Yu Wu、Julian P. Henschke、Hsyueh-Liang Wu
DOI:10.1021/ol4035897
日期:2014.1.17
For the first time, simple N-tosyl aryl aldimines, prepared from the condensation of tosyl amide and aromaticaldehydes, can be used as substrates in the rhodium catalyzed 1,2-addition reaction using alkenylboron nucleophiles. In the presence of 1.5 mol % of [RhCl(1e)]2, enantioselective addition of various potassium alkenyltrifluoroborates to aryl aldimines furnished the corresponding chiral allylic