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Portugaliae Electrochimica Acta

versão impressa ISSN 0872-1904

Port. Electrochim. Acta v.21 n.2 Coimbra  2003

 

Electrochemical Study of Nickel (salen) and Cobalt (salen) Derivative Complexes in the Presence of Unsaturated Halides

 

E. Duñach, A.P. Estevesa, L.F.M. Leitea), M.A. Lemosa), M.J. Medeirosa) *, S. Olivero

Laboratoire Arômes, Synthèses et Interactions, Université de Nice-Sophia Antipolis, Parc Valrose, 06108 Nice Cedex 2, France

a) Centro de Química/IBQF, Universidade do Minho, Largo do Paço, 4700-320 Braga, Portugal

 

Received 7 December 2002; accepted in revised form 7 April 2003

 

Abstract

The electrochemical intramolecular cyclisation of allyl 2-bromophenyl ethers in N,N'-dimethylformamide at constant current in a diaphragmless cell has been developed using Ni(II) and Co(II) complexes as electron-transfer mediators. Cyclic compounds are obtained in good yields under appropriate experimental conditions.

Keywords: electron transfer, cyclisation, nickel, cobalt, radicals, heterocycles.

 

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* Corresponding author. E-mail address: medeiros@quimica.uminho.pt.

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