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Issue 95, 2014
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The use of the sterically demanding IPr* and related ligands in catalysis

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Abstract

This account highlights the synthesis and applications of one of the very bulky NHC ligands, IPr* (1,3-bis(2,6-bis(diphenylmethyl)-4-methylphenyl)imidazo-2-ylidene). This ligand and some of its derivatives have been found very effective in several catalytic applications and have enabled the isolation of highly reactive organometallic complexes. More specifically, applications of this ligand in Pd and Ni chemistry have permitted challenging transformations under mild reaction conditions and low catalyst loadings. We report the successes as well as the limitations encountered using transition-metal systems bearing this ligand-type. This report will hopefully serve as a guide to synthetic chemists, providing insights as to when the very sterically demanding IPr* ligand (and its congeners) and in a broader context, very bulky NHC ligands, should be used.

Graphical abstract: The use of the sterically demanding IPr* and related ligands in catalysis

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Publication details

The article was received on 09 Jul 2014, accepted on 15 Aug 2014 and first published on 26 Aug 2014


Article type: Feature Article
DOI: 10.1039/C4CC05289G
Citation: Chem. Commun., 2014,50, 14926-14937
  • Open access: Creative Commons BY license
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    The use of the sterically demanding IPr* and related ligands in catalysis

    F. Izquierdo, S. Manzini and S. P. Nolan, Chem. Commun., 2014, 50, 14926
    DOI: 10.1039/C4CC05289G

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