Asymmetric synthesis of 3-spirocyclopropyl-2-oxindoles via intramolecular trapping of chiral aza-ortho-xylylene
作者:Xiaowei Dou、Weijun Yao、Bo Zhou、Yixin Lu
DOI:10.1039/c3cc45369c
日期:——
Chiral aza-ortho-xylylene intermediates were efficiently generated from 3-chloro-3-substituted oxindole precursors. The first intramolecular trapping of chiral aza-ortho-xylylene intermediates led to a highly asymmetric synthesis of 3-spirocyclopropyl-2-oxindoles.
从3-氯-3-取代的羟吲哚前体有效地生成了手性氮杂-邻二甲苯基中间体。手性氮杂-邻二甲苯基中间体的第一次分子内捕获导致了3-螺环丙基-2-氧吲哚的高度不对称合成。