Oxidative addition of 2-halogenoazoles-direct synthesis of palladium(II) complexes bearing protic NH,NH-functionalized NHC ligands

Rajorshi Das; Constantin G Daniliuc; F Ekkehardt Hahn

doi:10.1002/anie.201308269

Oxidative addition of 2-halogenoazoles-direct synthesis of palladium(II) complexes bearing protic NH,NH-functionalized NHC ligands

Angew Chem Int Ed Engl. 2014 Jan 20;53(4):1163-6. doi: 10.1002/anie.201308269. Epub 2013 Dec 11.

Authors

Rajorshi Das¹, Constantin G Daniliuc, F Ekkehardt Hahn

Affiliation

¹ Institut für Anorganische und Analytische Chemie; NRW Graduate School of Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstrasse 30, 48149 Münster (Germany).

PMID: 24339271
DOI: 10.1002/anie.201308269

Abstract

The chemistry of N-heterocyclic carbenes (NHCs) is dominated by N,N'-dialkylated or -diarylated derivatives. Such NHC ligands are normally obtained by C2-deprotonation of azolium cations or by reductive elimination from azol-2-thiones. A simple one-step procedure is described that leads to complexes with NH,NH-functionalized NHC ligands by the oxidative addition of 2-halogenoazoles to complexes of zero-valent transition metals.

Keywords: N-heterocyclic carbenes; carbene complexes; oxidative addition; palladium.