Perfluoroalkyl-Promoted Synthesis of Perfluoroalkylated Pyrrolidine-Fused Coumarins with Methyl β-Perfluoroalkylpropionates

J Org Chem. 2021 Nov 5;86(21):15717-15725. doi: 10.1021/acs.joc.1c01538. Epub 2021 Oct 13.

Abstract

Employing the methyl β-perfluoroalkylpropionate as the Michael acceptor, an efficient approach for the synthesis of perfluoroalkylated pyrrolidine-fused coumarins has been achieved. A tandem reaction involving [3 + 2] cycloaddition and intramolecular transesterification was proposed for the mechanism. The enhanced electrophilicity resulting from the strong electron-withdrawing ability of the perfluoroalkyl group was crucial for this tandem reaction.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Coumarins*
  • Cyclization
  • Fluorocarbons*
  • Molecular Structure
  • Pyrrolidines

Substances

  • Coumarins
  • Fluorocarbons
  • Pyrrolidines