Catalytic enantioselective intramolecular 1,3-dipolar cycloaddition of azomethine ylides with fluorinated dipolarophiles

Chem Commun (Camb). 2022 Jul 12;58(56):7805-7808. doi: 10.1039/d2cc02902b.

Abstract

An enantioselective synthesis of polycyclic fluorinated pyrrolidines has been achieved by Cu-catalyzed intramolecular 1,3-dipolar cycloaddition of azomethine ylides with fluorinated dipolarophiles. The method displays a wide scope and afforded the desired cycloadducts in high yields with up to 99% ee. These results demonstrate that fluoroalkyl substituents are excellent activating groups in this transformation.

MeSH terms

  • Azo Compounds
  • Catalysis
  • Cycloaddition Reaction
  • Stereoisomerism
  • Thiosemicarbazones*

Substances

  • Azo Compounds
  • Thiosemicarbazones
  • azomethine