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https://hdl.handle.net/1822/26872
Título: | Organic cyclisations of propargyl and allyl bromoesters in microemulsions catalyzed by electrogenerated Nickel(I) tetramethylcyclam |
Autor(es): | Esteves, Ana Paula Neves, C. S. S. Medeiros, Maria José Pletcher, Derek |
Palavras-chave: | Microemulsions Cyclic voltammetry Electrosynthesis Electrocatalytic reduction Intramolecular cyclisation electrocataiytic reduction |
Data: | 2008 |
Editora: | Elsevier B.V. |
Revista: | Journal of Electroanalytical Chemistry |
Resumo(s): | While the reductive intramolecular cyclisation of propargyl and allyl bromoesters catalysed by [Ni(tmc)]+ gives good yields of the desired products using N,N-dimethylformamide as the solvent, the use of this aprotic solvent presents practical, safety and environmental issues. This paper therefore reports the search for non-toxic alternatives, in particular the study of microemulsions prepared from water, hydrocarbons, surfactant and alcohol co-surfactant. It is shown that the [Ni(tmc)]2+/[Ni(tmc)]+ couple is reversible in such media and that [Ni(tmc)]+ reacts rapidly with propargyl and allyl bromoesters to give excellent yields of cyclic products. Indeed, these microemulsions are convenient media for such syntheses. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/26872 |
DOI: | 10.1016/j.jelechem.2007.11.006 |
ISSN: | 0022-0728 |
Versão da editora: | www.elsevier.com/locate/jelechem |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CDQuim - Artigos (Papers) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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MJM- Paper-revised version-final.pdf | Documento principal | 460,44 kB | Adobe PDF | Ver/Abrir |