Publicação

Bioinspired copper corrole and porphyrin catalysts for oxidation and hydrocarboxylation of alkanes

Ver documento

Detalhes bibliográficos
Resumo:The development of novel bioinspired catalytic systems that are efficient in the mild oxidative transformation of alkanes remains an attractive research direction in the area of molecular catalysis. In the current study, three copper corrole/porphyrin complexes were synthesized, characterized, and evaluated as homogeneous catalysts in the oxidative transformation of cycloalkanes under mild conditions. New copper complexes of 5,10,15-tris(pentafluorophenyl)corrole and 5,10,15,20-tetrakis(pentafluorophenyl)porphyrin derivatives bearing a hydroxyethoxy unit were obtained via the controlled nucleophilic substitution of para fluorine atom with ethylene glycol. The model catalytic processes include: (i) the oxidation of cycloalkanes with H2O2 into a mixture of cyclic ketones and alcohols, and (ii) the hydrocarboxylation of cycloalkanes in the CO/S2O82−/H2O system to generate cycloalkanecarboxylic acids as main products. Both model reactions occur under mild conditions (50−60 °C). Selectivity features, substrate and oxidant scope, and the effects of various reaction parameters were studied and discussed. The best catalysts were the copper corrole derivatives, the performance of which is slightly influenced by the presence of the ethylene glycol moiety. In particular, the copper(III) complex of 5,10,15-tris(pentafluorophenyl)corrole is an efficient catalyst for the mild oxidation and carboxylation of cycloalkanes. This work widens the types of Cu-based corrole/porphyrin derivatives that can be used as bioinspired catalytic systems.
Autores principais:Santos, Carla I. M.
Outros Autores:Rosa, Vitor; Neves, M. Graça P. M. S.; Kirillov, Alexander M.; Kirillova, Marina V.
Assunto:Bioinspired catalysis Copper catalysts Corroles and porphyrins Homogeneous catalysis Oxidation reactions Catalysis Process Chemistry and Technology Physical and Theoretical Chemistry
Ano:2025
País:Portugal
Tipo de documento:artigo
Tipo de acesso:acesso aberto
Instituição associada:Universidade Nova de Lisboa
Idioma:inglês
Origem:Repositório Institucional da UNL

Registos relacionados

Registos relacionados