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Suzuki reaction catalysed by a PCsp3P pincer Pd(II) complex: Evidence for a mechanism involving molecular species

In English

Författare

Summary, in English

{Cis-1,3-bis[(di-tert-butylphosphino)methyl]cyclohexyl}palladium(II)trif luoroacetate (1) acts as a precatalyst for the Suzuki reaction of aryl halides with phenylboronic acid in the absence or presence of mercury to give the product in modest to reasonably good yields. The reaction was monitored by P-31- and H-1 NMR spectroscopy in a stepwise fashion, concluding that complex 1 reacts with activated boronic acids in the first reaction step to yield the corresponding phenyl complex 2. Complex 2 thereafter generates the Suzuki cross-coupling product upon addition of aryl halide. This shows that (PCP)Pd complexes, in addition to the previously demonstrated Pd(0)/Pd(II) mechanism, can mediate cross-coupling reactions using molecular species in a non-zero oxidation state. (C) 2009 Elsevier B.V. All rights reserved.

Publiceringsår

2009

Språk

Engelska

Sidor

3112-3115

Publikation/Tidskrift/Serie

Journal of Organometallic Chemistry

Volym

694

Issue

19

Dokumenttyp

Artikel i tidskrift

Förlag

Elsevier

Ämne

  • Organic Chemistry

Nyckelord

  • Pincer ligands
  • Palladium
  • Cross-coupling
  • NMR studies

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 0022-328X