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Inorg Chem. 2008 Jul 7;47(13):5756-61. doi: 10.1021/ic8000152. Epub 2008 May 31.

Catalytic phenylborylation reaction by iridium(0) nanoparticles produced from hydridoiridium carborane.

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1
Institute of Chemical and Engineering Sciences Ltd, 1 Pesek Road, Jurong Island, Singapore. zhu_yinghuai@ices.a-star.edu.sg

Abstract

Well-dispersed iridium(0) nanoparticles stabilized with the ionic liquid, trihexyltetradecylphosphonium methylsulfonate, [THTdP][MS], have been successfully prepared by reduction of the precursor hydridoiridium carborane, (Ph 3P) 2Ir(H)(7,8- nido-C 2B 9H 11). The iridium nanoparticles were found to be active catalysts for arylborylation, forming boric acids. The activity of the catalyst has been investigated as a function of the activating base, and reaction conditions. The highest yield of 91% was achieved in a microwave reactor using the base, tetra-2-pyridinylpyrazine, in the presence of [THTdP][MS]. The catalytic system could be recycled at least six times with less than a 0.5% loss of activity.

PMID:
18512906
DOI:
10.1021/ic8000152
[Indexed for MEDLINE]
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