Evidence that SCS pincer Pd(II) complexes are only precatalysts in Heck catalysis and the implications for catalyst recovery and reuse

Kunquan Yu, William Sommer, John M. Richardson, Marcus Weck, Christopher W. Jones

Research output: Contribution to journalArticle

Abstract

SCS-pincer Pd(II) complexes have been covalently immobilized onto porous silica, cross-linked polymer (Merrifield resin) and soluble poly(norbornene) supports via either amide or urea linkages and evaluated in the Heck coupling of iodobenzene with n-butyl acrylate. Kinetic experiments and poisoning studies indicate that in all cases the pincer complexes merely act as precatalysts. Contrary to literature reports, there is no evidence for catalysis by the intact amide-linked SCS-Pd(II) complexes under any conditions studied here.

Original languageEnglish (US)
Pages (from-to)161-171
Number of pages11
JournalAdvanced Synthesis and Catalysis
Volume347
Issue number1
DOIs
StatePublished - Jan 2005

Fingerprint

Amides
Catalysis
Recovery
Catalysts
Urea
Silicon Dioxide
Polymers
Resins
Silica
Kinetics
Experiments
Merrifield resin
2-norbornene
iodobenzene
n-butyl acrylate

Keywords

  • Biphasic catalysis
  • Heck reaction
  • Immobilization
  • Leaching
  • Palladium
  • Pincer complex

ASJC Scopus subject areas

  • Chemistry (miscellaneous)
  • Organic Chemistry
  • Catalysis

Cite this

Evidence that SCS pincer Pd(II) complexes are only precatalysts in Heck catalysis and the implications for catalyst recovery and reuse. / Yu, Kunquan; Sommer, William; Richardson, John M.; Weck, Marcus; Jones, Christopher W.

In: Advanced Synthesis and Catalysis, Vol. 347, No. 1, 01.2005, p. 161-171.

Research output: Contribution to journalArticle

Yu, Kunquan ; Sommer, William ; Richardson, John M. ; Weck, Marcus ; Jones, Christopher W. / Evidence that SCS pincer Pd(II) complexes are only precatalysts in Heck catalysis and the implications for catalyst recovery and reuse. In: Advanced Synthesis and Catalysis. 2005 ; Vol. 347, No. 1. pp. 161-171.
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