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Dr. Li-Tao Shen, Wen-Qiang Jia and Prof. Dr. Song Ye Catalytic [4+2] Cyclization of α,β-Unsaturated Acyl Chlorides with 3-Alkylenyloxindoles: Highly Diastereo- and Enantioselective Synthesis of Spirocarbocyclic Oxindoles Angewandte Chemie International Edition 52

Version of Record online: 13 NOV 2012 | DOI: 10.1002/anie.201207405

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Cinchona alkaloids were used as Lewis base catalysts in the title reaction. The [4+2] cyclization of α,β-unsaturated acyl chlorides with electron-deficient alkenes derived from oxindole gave the corresponding spirocarbocyclic oxindoles.

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