Enantioselective Construction of 3-Hydroxy Oxindoles via Decarboxylative Addition of β-Ketoacids to Isatins
作者:Fangrui Zhong、Weijun Yao、Xiaowei Dou、Yixin Lu
DOI:10.1021/ol301855w
日期:2012.8.3
The first highlyenantioselectivedecarboxylativeaddition of β-ketoacids to isatins mediated by a bifunctional tertiary amine–thiourea catalyst has been developed, allowing facile synthesis of biologically important 3-hydroxyoxindoles in good yields and excellent enantioselectivities. The method reported represents a valuable approach of utilizing β-ketoacids as synthetic equivalents of aryl/alkyl
Enantioselective decarboxylative aldol addition of β-ketoacids to isatins catalyzed by binaphthyl-modified organocatalyst
作者:Chang Won Suh、Chul Woo Chang、Keon Woong Choi、Young Jo Lim、Dae Young Kim
DOI:10.1016/j.tetlet.2013.04.132
日期:2013.7
The catalytic enantioselective decarboxylative aldol addition reaction of isatins with β-ketoacids promoted by chiral bifunctional organocatalysts have been developed, allowing facile synthesis of the corresponding chiral 3-hydroxy-3-phenacyloxindole derivatives with excellent enantioselectivity (up to 97% ee).