作者:Zhiqiang Han、Wenchao Chen、Sheng Dong、Caiyun Yang、Hongjun Liu、Yuanhuang Pan、Lin Yan、Zhiyong Jiang
DOI:10.1021/ol3021176
日期:2012.9.7
An organocatalytic asymmetric sulfenylation of 3-aryloxindoles with N-(sulfanyl)succinimides has been developed by using commercially available (DHQD)2PHAL as catalyst. Various chiral 3-benzylthio-, alkylthio-, and arylthio-substituted oxindoles, containing 3,3-disubstituted quarternary carbon stereocenters, could be obtained in high enantioselectivities (85–97% ee). Furthermore, the opposite enantiomers
通过使用可商购的(DHQD)2 PHAL作为催化剂,开发了具有N-(亚硫烷基)琥珀酰亚胺的3-芳基羟吲哚的有机催化不对称亚硫基化反应。可以高对映选择性(85-97%ee)获得各种手性的3-苄硫基,烷硫基和芳硫基取代的羟吲哚,它们含有3,3-二取代的季碳立体中心。此外,通过用(DHQ)2 PHAL代替催化剂,可以轻松获得亚磺酰化产物的相反对映异构体,具有同等的优异对映选择性(86-95%ee)。