Enantioselective Synthesis of α-Aryl-β-Aminocyclopropane Carboxylic Acid Derivatives via Rh(II)-Catalyzed Cyclopropanation of Vinylsulfonamides with α-Aryldiazoesters

J Org Chem. 2022 Jan 21;87(2):1074-1085. doi: 10.1021/acs.joc.1c02386. Epub 2022 Jan 4.

Abstract

The reaction of vinylsulfonamides with donor-acceptor carbenes derived from α-aryldiazoesters, catalyzed by the tert-butyl glycine-derived dirhodium complex Rh2(S-4-Br-NTTL)4, has been reported. This method provides a variety of α-aryl-β-aminocyclopropane carboxylic acid derivatives bearing one quaternary carbon stereogenic center vicinal to the amino-substituted carbon in high yields with excellent diastereo- and enantioselectivities. Vinylsulfonamides showed complementary advantages over the well-developed vinylamides or vinylcarbamates for this Rh(II)-catalyzed cyclopropanation strategy. Moreover, these conformationally restricted α-aryl-β-aminocyclopropyl carboxylic acid derivatives can be readily incorporated into dipeptides.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Carboxylic Acids*
  • Catalysis
  • Glycine*
  • Molecular Structure
  • Stereoisomerism

Substances

  • Carboxylic Acids
  • Glycine