Palladium-Catalyzed Alkynylation of Enones with Alkynylsilanes via C-C Bond Activation

J Org Chem. 2022 May 20;87(10):6807-6811. doi: 10.1021/acs.joc.2c00498. Epub 2022 May 4.

Abstract

We report herein the synthesis of 1,3-enynes via palladium-catalyzed cross-coupling between enone derivatives and alkynylsilanes. The employment of an appropriate pyridine-oxazoline ligand is the key to the C-C cleavage and the high E/Z stereoselectivity. This protocol features broad substrate scope and wide functional-group tolerance, affording the desired products in moderate-to-good yields. Late-stage diversification of natural product β-ionone further demonstrated the synthetic utility of this protocol.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Catalysis
  • Ligands
  • Palladium* / chemistry

Substances

  • Ligands
  • Palladium