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Enantioselective [4+2] Cycloadditions of 2‐Vinyl‐1 H‐indoles with 3‐Nitro‐2 H‐chromenes Catalyzed by a Zn(OTf)2/Bis(oxazoline) Complex: An Efficient Approach to Fused Heterocycles with a Quaternary Stereocenter
Authors:Fen Tan  Cong Xiao  Hong‐Gang Cheng  Wei Wu  Ke‐Rong Ding  Prof Dr Wen‐Jing Xiao
Institution:1. Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079 (China), Fax: (+86)?27‐67862041;2. College of Chemistry, Peking University, Beijing 100871 (China)
Abstract:
Keywords:cycloaddition  enantioselectivity  heterocycles  indoles  Lewis acid catalysis
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