Asymmetric synthesis of C–F quaternary α-fluoro-β-amino-indolin-2-ones via Mannich addition reactions; facets of reactivity, structural generality and stereochemical outcome
作者:Chen Xie、Wanxing Sha、Yi Zhu、Jianlin Han、Vadim A. Soloshonok、Yi Pan
DOI:10.1039/c6ra27710a
日期:——
Reported herein is a new approach for the preparation of enantiomerically pure α-fluoro-β-amino-indolin-2-ones possessing tetrasubstituted fluorinated stereogenic centers. This method includes the detrifluoroacetylative in situ generation of tertiary enolates followed by Mannich reaction with (Ss)-sulfinylimines. The operationally convenient conditions coupled with perfect diastereoselectivity and