Sulfonate(SO3-)-built-in phosphines for Pd-catalyzed aminocarbonylation/hydroxycarbonylation of alkynes under acid-additive free condition

  • Long Gen Hu
  • , Guo Sheng Zhang
  • , Guang Hui Shi
  • , Jian Guo Qian
  • , Hai Jing Wang*
  • , Ye Liu
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The Pd-catalyzed aminocarbonylation as well as hydroxycarbonylation of terminal alkynes was achieved with aid of a sulfonate-built-in zwitterionic phosphine (L2), under acid-additive free condition. With L2-Pd(OAc)2 catalytic system, the terminal alkynes smoothly converted to the corresponding α,β-unsaturated carbonyl compounds (amides or carboxylic acids) in moderate to excellent isolated yields, with 100 % branched regio-selectivity. It was believed that L2 with the matched steric-demand and the bulit-in-SO3--unit not only tuned the catalytic performance of Pd(OAc)2 to activate CO and alkyne but also exhibited the synergetic activating ability towards the nucleophiles of (primary/secondary) amines or H2O via developing hydrogen-bond interaction, which facilitated the observed successful carbonylation. It means the developed L2-Pd(OAc)2 system could serve as a bifunctional catalyst.

Original languageEnglish
Article number115321
JournalMolecular Catalysis
Volume585
DOIs
StatePublished - Oct 2025

Keywords

  • Aminocarbonylation
  • Bifunctional catalyst
  • Hydroxycarbonylation
  • Sulfonate-built-in-phosphine
  • Zwitterionic ligand

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