Enantioselective Cascade Michael Addition/Cyclization Reactions of 3-Nitro-2H-chromenes with 3-Isothiocyanato Oxindoles: Efficient Synthesis of Functionalized Polycyclic Spirooxindoles.

2014

The zinc-catalyzed asymmetric cascade Michael addition/cyclization reaction between 3-nitro-2H-chromenes and 3-isothiocyanato oxindoles is described.

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