Switchable Access to Different Spirocyclopentane Oxindoles by N-Heterocyclic Carbene Catalyzed Reactions of Isatin-Derived Enals and N-Sulfonyl Ketimines
Angewandte Chemie - International Edition - United Kingdom
doi 10.1002/anie.201704210
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Date
June 20, 2017
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Wiley