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Your search keyword '"Medeiros, Maria José"' showing total 2 results
Start Over Author "Medeiros, Maria José" Topic halides
2 results on '"Medeiros, Maria José"'

1. Electrochemical cyclizations of organic halides catalyzed by electrogenerated nickel(I) complexes: towards environmentally friendly methodologies.

Author

Duñach, Elisabet, Medeiros, Maria José, and Olivero, Sandra

Subjects
*HALIDES, *RING formation (Chemistry), *NICKEL compounds, *ELECTROCHEMICAL analysis, *INTRAMOLECULAR catalysis, *ELECTROSYNTHESIS, *CYCLIC voltammetry
Abstract

This review concentrates on the intramolecular cyclizations of organic halides catalyzed by nickel complexes using an electrochemical methodology, as an alternative to the classical radical or transition-metal catalyzed or mediated processes. [ABSTRACT FROM AUTHOR]

Published
2017
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2. Radical-type reactions in protic and aprotic media: Comparisons in nickel-catalysed electrochemical reductive cyclisations

Author

Duñach, Elisabet, Esteves, Ana Paula, Medeiros, Maria José, dos Santos Neves, Cristina Sofia, and Olivero, Sandra

Subjects
*RADICALS (Chemistry), *CHEMICAL reactions, *NICKEL catalysts, *ELECTROCHEMICAL analysis, *RING formation (Chemistry), *HALIDES, *METAL complexes, *TETRAHYDROFURAN
Abstract

Abstract: The electrochemical reductive cyclisation of unsaturated organic halides in the presence of Ni(II) complexes as catalysts was examined in aprotic solvents such as DMF and in protic solvents such as ethanol, butanol or ethanol–water mixtures. The presence of the alcohol media enhanced the rate of recycling of the catalytic species. [Copyright &y& Elsevier]

Published
2009
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