Modular Trimethylene-Linked Bisimidazol(in)ium Salts

Abstract

A short and modular synthesis of symmetrically and nonsymmetrically substituted bisimidazolinylene N-heterocyclic carbene precursors is described. Two methods to establish dicopper(I) complexes of these compounds depending on the steric shielding of the carbene are reported.

alkylations - copper - carbene complexes - ligands - N-heterocyclic carbenes

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CCDC 768548-768552 contain the supplementary crystallographic data for this paper. These data can be obtained free of charge at www.ccdc.cam.ac.uk/conts/retrieving.html [or from the Cambridge Crystallographic Data Centre, 12 Union Road, Cambridge CB2 1EZ, UK; fax: [phone], E-mail: [e-mail]].