4.8 Article

Palladium-Catalyzed Highly Enantioselective Cycloaddition of Vinyl Cyclopropanes with Imines

Journal

ORGANIC LETTERS
Volume 21, Issue 6, Pages 1713-1716

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.9b00274

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Funding

  1. National Natural Science Foundation of China [NSFC 21572183, 21772158, 21801208]

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Palladium-catalyzed asymmetric formal [3 + 2] cycloaddition of vinyl cyclopropanes and aldimines or isatin-derived ketimines proceeded smoothly in the presence of chiral phosphoramidite ligands. The corresponding highly functionalized and optically enriched pyrrolidine or spiro[pyrrolidin-3,2'-oxindole] derivatives are obtained in up to 94% yield and with up to 96% ee and 7:1 dr.

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