Issue 9, 2010

An intermolecular C–C coupling reaction of iridium complexes

Abstract

Novel imidazo[1,5-b]pyridazine-substituted (pyridyl-methyl)amines were synthesized via the nucleophilic ring transformation of oxadiazolium halides and (aminomethyl)pyridines, followed by a cyclocondensation reaction with 1,3-diketones. After deprotonation, these monoanionic amido-pincer ligands are suitable for the stabilization of mononuclear iridium complexes. For 2-(pyridyl-methyl)-amine-derived complexes, we observed the formation of dimers via an intermolecular C–C coupling reaction, whilst the 3-(pyridyl-methyl)amine-derived complex did not react. We propose that enamine tautomerization plays an important role in the C–C coupling reaction.

Graphical abstract: An intermolecular C–C coupling reaction of iridium complexes

Supplementary files

Article information

Article type
Paper
Submitted
26 Feb 2010
Accepted
31 Mar 2010
First published
18 May 2010

New J. Chem., 2010,34, 1954-1960

An intermolecular C–C coupling reaction of iridium complexes

K. Kutlescha, T. Irrgang and R. Kempe, New J. Chem., 2010, 34, 1954 DOI: 10.1039/C0NJ00158A

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