Asymmetric Synthesis of trans-2,3-Disubstituted Indoline Derivatives

Kang, Kyoung Hee; Do, Junghwan; Park, Yong Sun

Asymmetric Synthesis of trans-2,3-Disubstituted Indoline Derivatives

2012

Kang, Kyoung Hee | Do, Junghwan | Park, Yong Sun

A novel method for asymmetric synthesis of trans-2,3-disubstituted indolines has been developed. The strategy involves the (−)-sparteine-mediated electrophilic substitution of 2-benzyl N-pivaloylaniline with aromatic or α,β-unsaturated aldehydes and subsequent intramolecular nucleophilic substitution. The simple protocol for two-step process can produce highly enantioenriched indolines 3a–o up to 98:2 er.

显示更多 [+]