✦ LIBER ✦

Mononuclear Rhodium(I) Complexes with Chelating N-Heterocyclic Carbene Ligands − Catalytic Activity for Intramolecular Hydroamination

✍ Scribed by Suzanne Burling; Leslie D. Field; Hsiu L. Li; Barbara A. Messerle; Peter Turner

Publisher: John Wiley and Sons
Year: 2003
Tongue: English
Weight: 142 KB
Volume: 2003
Category: Article
ISSN: 1434-1948
DOI: 10.1002/ejic.200300172

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✦ Synopsis

Abstract

The mononuclear cationic Rh^I^ complexes [Rh(cod)(mdd)]^+^X^−^ and [Rh(CO)~2~(mdd)]^+^X^−^ (X = BPh~4~, PF~6~) containing the chelating bidentate N‐heterocyclic carbene ligand 1,1′‐methylene‐3,3′‐dimethyldiimidazoline‐2,2′‐diylidene (mdd) have been synthesised and spectroscopically characterised. The complexes [Rh(cod)(mdd)]^+^BPh~4~^−^ and [Rh(CO)~2~(mdd)]^+^PF~6~^−^ have also been characterised by X‐ray crystallography. The dicarbonyl complexes catalyse the intramolecular hydroamination of 4‐pentyn‐1‐amine to 2‐methyl‐1‐pyrroline. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)

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## Abstract Di‐ and trinuclear complexes of copper(I) bearing bis‐ or tris‐N‐heterocyclic carbene ligands have been prepared and evaluated as catalysts in nitrene transfer reactions from PhI=NTs to unsaturated and saturated substrates (olefin aziridination and C–H bond amidation) and carbene transf