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Triazoles from N-alkynylheterocycles and their coordination to iridium

Burley, Glenn and Davies, David (2012) Triazoles from N-alkynylheterocycles and their coordination to iridium. Organometallics, 31 (3). 1112–1117. ISSN 0276-7333

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Abstract

N-alkynylheterocycles (benzimidazole and indazole) are converted to triazoles by click chemistry, and the resulting triazoles react with [IrCl2Cp*]2. The benzimidazole-triazole coordinates in a monodentate fashion through the benzimidazole, whereas the indazole-triazole is bidentate through coordination of both heterocycles. Reaction of the benzimidazole-triazole with methyliodide gives a benzimidazolium salt that deprotonates on coordination to afford a rare example of a bidentate NHC–triazole.