Shuixiu Su, Ying Chen, Qiyu Wang, Jian Zhang, Yang-Zi Liu, Wei-Ping Deng
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Enantioselective Construction of Spirooxindole-γ-butyrolactones via NHC-Bound Isobenzofulvene [10π+2π] Cycloaddition
We report an N-heterocyclic carbene (NHC)-catalyzed [10π+2π] cycloaddition between indene-2-carbaldehydes and isatins, delivering spirooxindole-γ-butyrolactones with moderate yields (up to 68%) and excellent enantioselectivity (up to 93% ee). This transformation proceeds via NHC-bound isobenzofulvene intermediates and represents the first successful application of all-carbon higherene in NHC-catalyzed [10π+2π] cycloadditions.
期刊介绍:
The Chinese Journal of Chemistry is an international forum for peer-reviewed original research results in all fields of chemistry. Founded in 1983 under the name Acta Chimica Sinica English Edition and renamed in 1990 as Chinese Journal of Chemistry, the journal publishes a stimulating mixture of Accounts, Full Papers, Notes and Communications in English.