N-Heterocyclic Carbene Catalyzed Asymmetric Synthesis of Pentacyclic Spirooxindoles via [3+3] Annulations of Isatin-Derived Enals and Cyclic N-Sulfonyl Ketimines
Advanced Synthesis and Catalysis - United Kingdom
doi 10.1002/adsc.201900065
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Date
March 5, 2019
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Wiley