Nuevos catalizadores Suzuki-Miyaura confinados en redes de polímeros porosos
- Noelia Esteban
- Conchi O. Ania
- José G. de la Campa
- Cristina Álvarez 1
- María L. Ferrer
- Ángel E. Lozano
- Jesús A. Miguel
- 1 Instituto de Ciencia y Tecnología de Polímeros(ICTP-CSIC) Madrid
ISSN: 0034-8708
Ano de publicación: 2020
Título do exemplar: Innovaciones en polímeros
Volume: 119
Número: 753
Tipo: Artigo
Outras publicacións en: Revista de plásticos modernos: Ciencia y tecnología de polímeros
Resumo
This work is related to the development of confined Pd(II) catalysts, which were prepared from porous copolymer networks. These copolymeric networks were synthetized by reaction between a trifunctional aromatic monomer (1,3,5-triphenylbenzene) and mixtures of two ketones, having electron-withdrawing groups (4,5-diazafluoren-9-one (DAFO) and 1H-indol-2,3-dione (isatin)), in different molar ratios. These POPs are amorphous material, with surface areas superior to 760 m2/g, essentially microporous, and high thermal and chemical stability. After the polymerization, a rigid bipyridine moiety is formed, which was employed as a catalyst ligand. The catalysts were made by reacting the obtained POPs with palladium acetate and they were employed for Suzuki-Miyaura cross-coupling reactions. It was observed that these new catalysts gave excellent yields with high catalytic efficiency. As an added advantage, the homocoupling reactions could be carried out on green solvents at medium temperatures