Catalytic [4+2] Cyclization of α,β-Unsaturated Acyl Chlorides with 3-Alkylenyloxindoles: Highly Diastereo- and Enantioselective Synthesis of Spirocarbocyclic Oxindoles
作者:Li-Tao Shen、Wen-Qiang Jia、Song Ye
DOI:10.1002/anie.201207405
日期:2013.1.7
Cinchona alkaloids were used as Lewis base catalysts in the title reaction. The [4+2] cyclization of α,β‐unsaturatedacylchlorides with electron‐deficient alkenes derived from oxindole gave the corresponding spirocarbocyclic oxindoles.