Cobalt-Mediated Phosphorus-Aryl Bond Cleavage during Hydroformylatlon

Robert A. Dubois, Philip E. Garrou, Karen D. Lavln, Harry R. Allcock

Research output: Contribution to journalArticlepeer-review

48 Scopus citations

Abstract

Close examination of 1-hexene hydroformylation reactions catalyzed by cobalt carbonyl/triarylphosphine(PPh3 or P(p-MeC6H4)3, linked to PPh2-functionalized polystyrene or PPh2-functionalized (aryloxy) phosphazenes) has revealed a time-dependent decrease in catalytic activity due to a cobalt-mediated phosphorus-carbon bond cleavage. Benzene and benzyl alcohol were detected as the cleavage products. When olefin is omitted from the reaction, R2PH is formed. The detection of p-MeC6H4CH2OH indicates that oxidative addition of the P-aryl bond to Co is at least a partial contribution to the process. These results are relevant to transition-metal-triarylphosphine catalysis in general and put a new perspective on “immobilized” homogeneous catalysis.

Original languageEnglish (US)
Pages (from-to)649-650
Number of pages2
JournalOrganometallics
Volume3
Issue number4
DOIs
StatePublished - Jan 1 1984

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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