Synthesis of palladium(II) and platinum(II) complexes with crown ether phosphane ligands: Stille coupling of aryl iodides in water

Jorge Fresneda, Ernesto De Jesús, Pilar Gómez-Sal, Carmen López Mardomingo

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

The crown ether phosphanes PAr*Ph2 (1) and PAr*2R [Ar* = 3,4-(18-crown-6)-phenyl; R = Me (2); R = Ph (3)], prepared from PCl2R and Ar*Li, have been studied. The syntheses and characterization of their oxides (4-6), and their BH3 (7-9), PdCl2 (10-12), and PtCl2 (13-15) complexes are reported. The molecular structure of the borane complex PAr* 2Ph·BH3 (9) has been determined by X-ray structural analysis. Spectroscopic data suggest that phosphanes 1-3 have similar electronic properties and steric requirements to the corresponding phenylphosphane ligands PPh2Me and PPh3. Crown ether methylphosphane 2 and its complexes are remarkably water soluble, but 1 and 3 are only slightly soluble. Palladium(II) complexes 14 and 15 have been tested as catalysts in the Stille coupling of phenyltrichlorostannanes and aryl iodides in water.

Original languageEnglish (US)
Pages (from-to)1468-1476
Number of pages9
JournalEuropean Journal of Inorganic Chemistry
Issue number8
DOIs
StatePublished - Apr 22 2005
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Inorganic Chemistry

Keywords

  • Aqueous-phase catalysis
  • C-C coupling
  • Crown compounds
  • Palladium
  • Phosphane ligands

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