Synthesis of propargyl silanes from terminal alkynes via a migratory Sonogashira reaction

Chem Commun (Camb). 2023 Jun 22;59(51):7931-7934. doi: 10.1039/d3cc01847d.

Abstract

Herein we report a mild synthesis of propargyl silanes from terminal alkynes. We exploit a bromonaphthyl-substituted silane as a silylmethyl electrophile surrogate, which participates in a Sonogashira reaction after an aryl-to-alkyl Pd-migration. Twenty-seven propargyl silanes were obtained in up to 88% yield. The obtained products were versatile building blocks that can be used in addition to electrophiles, triple bond hydrogenation or silyl group cleavage with acid or fluoride sources.

MeSH terms

  • Alkynes* / chemistry
  • Hydrogenation
  • Silanes* / chemistry

Substances

  • Alkynes
  • Silanes