Catalytic Asymmetric Umpolung Tandem Reactions of Hemiacetals via Dinuclear Zinc Cooperative Catalysis

Org Lett. 2022 Jun 10;24(22):3909-3914. doi: 10.1021/acs.orglett.2c00913. Epub 2022 Apr 25.

Abstract

The umpolung activity of hemiacetals serving as α-carbon nucleophiles has been reported via dinuclear zinc cooperative catalysis. This umpolung strategy has been applied to catalytic asymmetric tandem reactions of 1-tosylindoline-2,3-diols with β,γ-unsaturated-α-keto compounds, providing a broad series of structurally diverse tetrahydrofuran spirooxindoles and dihydrofurans, respectively. In addition, products could be transformed to quinazoline and quinoline derivatives.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Carbon*
  • Catalysis
  • Zinc*

Substances

  • Carbon
  • Zinc