Gold(I)-Catalyzed Asymmetric Synthesis of Planar Chiral Arene Chromium Complexes
作者:Masato Murai、Jun’ichi Uenishi、Motokazu Uemura
DOI:10.1021/ol1019376
日期:2010.11.5
Gold(I)-catalyzed asymmetric cyclization of 1,3-dihydroxymethyl-2-alkynylbenzene chromium complexes gave planar chiral isochromene chromium complexes with high enantioselectivity. Enantiomeric excess of the cyclization products was largely affected by a combination of axially chiral diphosphine(AuCl)(2) precatalysts and silver salts. A system of segphos(AuCl)(2) with AgBF4 resulted in the formation of the corresponding antipode.