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- Xu, Sheng-Wen, et al. Show all 6 Authors
- Tetrahedron letters 2019 v.60 no.2 pp. 137-141
- chemical structure; cycloaddition reactions; decarboxylation; organic compounds; proline; stereochemistry; stereoselectivity
- ... A new methodology was developed for the highly efficient one-pot multicomponent synthesis of chromanone-based 3,3′-pyrrolidinyl-spirooxindoles via a 1,3-dipolar cycloaddition reaction of chromones 1 with azomethine ylides (thermally generated in situ from isatins and proline or thioproline). Another valuable application of this method was for the less reactive chromone through a carboxylic acid-ac ...