Intramolecular hydroamination of aminoalkenes using rhodium(I) and iridium(I) complexes with N,N- and P,N-donor ligands

Thi O. Nguyen, Bradley Y W Man, Richard Hodgson, Barbara A. Messerle*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

Cationic rhodium(i) and iridium(i) complexes containing the bidentate heterocyclic N,N-donor ligand bis(1-pyrazolyl)methane (bpm) and the counterion tetrakis[3,5-bis(trifluoromethyl)phenyl]borate (BArF-) were found to be efficient catalysts for the cyclization of activated and unactivated aminoalkenes. The rates of cyclization were found to be highly dependent upon the size and steric bulk of the substituents at the-position of the aminoalkene, with large steric bulk leading to faster rates of cyclization. In comparison, analogous rhodium(i) and iridium(i) complexes with the mixed P,N-donor ligand 1-[2-(diphenylphosphino)ethyl]pyrazole (PyP) were found to be less effective as catalysts for this reaction.

Original languageEnglish
Pages (from-to)741-746
Number of pages6
JournalAustralian Journal of Chemistry
Volume64
Issue number6
DOIs
Publication statusPublished - 2011
Externally publishedYes

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