Palladium-Catalyzed Highly Enantioselective Cycloaddition of Vinyl Cyclopropanes with Imines

Org Lett. 2019 Mar 15;21(6):1713-1716. doi: 10.1021/acs.orglett.9b00274. Epub 2019 Mar 4.

Abstract

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.

Publication types

  • Research Support, Non-U.S. Gov't