Influence of the channel size of isostructural 3d-4f MOFs on the catalytic aerobic oxidation of cycloalkenes

Cancino P.; Santibañez L.; Stevens C.; Fuentealba P.; Audebrand N.; Aravena D.; Torres J.; Martinez S.; Kremer C.; Spodine E.

Abstract

The present work reports a new group of heterogeneous catalysts with a 3D structure, CuLnIDA, {[Cu(3)Ln(2)(IDA)(6)]center dot 8H(2)O} (Ln: La-III, Gd-III or Yb-III), with an organic linker (H(2)IDA: iminodiacetic acid). Different sets of O-2 pressure and time were used in order to obtain the optimal reaction conditions at 75 degrees C. The reaction was found to depend on the [aldehyde]/[substrate] ratio. The best results, with a conversion of 73% for CuLaIDA as the catalyst, were obtained for the smallest ratio of 0.2. Finally, the importance of the pore size was analysed by comparing the catalytic activity of the as formed catalyst with that of the thermally activated one. The conversion increased ca. 26-35% for the different catalysts when they were previously activated. In addition, the selectivity increased towards cyclohexenone. The use of molecular oxygen as the oxidizing agent in a system where an auxiliary solvent is not used, as the cyclohexene substrate and products play the role of a solvent, permitted us to generate a more friendly environmental system for the oxidation of cycloalkenes under mild conditions.

Más información

Título según WOS: Influence of the channel size of isostructural 3d-4f MOFs on the catalytic aerobic oxidation of cycloalkenes
Título según SCOPUS: Influence of the channel size of isostructural 3d-4f MOFs on the catalytic aerobic oxidation of cycloalkenes
Título de la Revista: NEW JOURNAL OF CHEMISTRY
Volumen: 43
Número: 28
Editorial: ROYAL SOC CHEMISTRY
Fecha de publicación: 2019
Página de inicio: 11057
Página final: 11064
Idioma: English
DOI:

10.1039/c9nj02091h

Notas: ISI, SCOPUS