Highly enantioselective synthesis of dihydroquinazolinones through Sc(OTf)3-catalyzed intramolecular amidation of imines
作者:Tao Deng、Hongjun Wang、Chun Cai
DOI:10.1016/j.jfluchem.2014.11.008
日期:2015.1
A Sc(OTf)(3)-catalyzed intramolecular amidation of imines with a novel fluorous bis(oxazolines) as ligand is presented. The corresponding chiral dihydroquinazolinones were obtained in 76-94% yield with enantioselectivities up to 98%. The fluorous ligand can be easily recovered and reused at least three times without significant loss of enantioselectivity. (C) 2014 Elsevier B.V. All rights reserved.