Carbonylation reactions catalysed by rhodium(III) and palladium(II) complexes containing novel phosphine ligands

György Keglevich, Tamás Kégl, Irina L. Odinets, Natalya M. Vinogradova, László Kollár

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

RhCl2(Cp*)(monodentate P-ligand)- and trans-PdCl2(monodentate P-ligand)2-type complexes (where the P-ligand is either a P-heterocyclic or a cyclopropane-based tertiary phosphine) have been used as catalyst precursors in hydroformylation and hydroalkoxycarbonylation reactions, respectively. The chemoselectivity of hydroformylation is excellent (higher than 99%) in all cases. A strong dependence of the regioselectivity on the P-substituents was found in the case of the P-heterocyclic ligands. While the P-phenyl substituent favours the formation of the branched aldehyde regioisomer (3-phenyl-propanal), the introduction of ortho- and para-tolyl substituents resulted in the slightly preferred formation of linear aldehyde (2-phenyl-propanal). At the same time, the introduction of tolyl groups instead of the phenyl one caused an unexpectedly high increase in the catalytic activity. An unprecedented feature of the system has been observed by using complexes with cyclopropyl-phosphine ligands. The formation of the linear aldehyde regioisomer (3-phenyl-propanal) is favoured by the decrease of the temperature.

Original languageEnglish
Pages (from-to)779-784
Number of pages6
JournalComptes Rendus Chimie
Volume7
Issue number8-9
DOIs
Publication statusPublished - Aug 1 2004

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Fingerprint Dive into the research topics of 'Carbonylation reactions catalysed by rhodium(III) and palladium(II) complexes containing novel phosphine ligands'. Together they form a unique fingerprint.

  • Cite this