A comparative study on (NHC)Pd(acac)Cl complexes (NHC = N-heterocyclic carbene): indications for the origin of the different reactivity of saturated and unsaturated NHC in cross-coupling reactions

Winkelmann, Ole H, Riekstins, Andrei, Nolan, Steven P and Navarro, Oscar (2009) A comparative study on (NHC)Pd(acac)Cl complexes (NHC = N-heterocyclic carbene): indications for the origin of the different reactivity of saturated and unsaturated NHC in cross-coupling reactions. Organometallics, 28 (19). pp. 5809-5813. ISSN 0276-7333

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Abstract

The synthesis of the new well-defined and air-stable complex (SIPr)Pd(acac)Cl (SIPr = 1,3-bis(2,6-diisopropylphenyl)imidazolin-2-ylidene) is described, and the catalytic activity of this new complex has been tested in the α-arylation of ketones and in Buchwald−Hartwig amination reactions. The significant differences in catalytic performance when compared to the previously reported, unsaturated counterpart (IPr)Pd(acac)Cl (IPr = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene) are discussed by means of X-ray crystallography and on the basis of their varying solution dynamics, observed by 1H NMR spectroscopy.

Item Type: Article
Schools and Departments: School of Life Sciences > Chemistry
Subjects: Q Science
Depositing User: Deeptima Massey
Date Deposited: 20 May 2013 06:43
Last Modified: 20 May 2013 06:43
URI: http://srodev.sussex.ac.uk/id/eprint/44743
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