Showing posts with label Suzuki cross-coupling. Show all posts
Showing posts with label Suzuki cross-coupling. Show all posts

Tuesday, 7 October 2014

Palladium-heterogenized porous polyimide materials as effective and recyclable catalysts for reactions in water

Green Chem., 2015, Advance Article
DOI: 10.1039/C4GC01326C, Paper
E. Rangel Rangel, E. M. Maya, F. Sanchez, J. G. de la Campa, M. Iglesias
Functionalized porous polyimides were used as supports for palladium complexes leading to efficient catalysts for the Suzuki cross-coupling of water

Corresponding authors
Dept. Química Macromolecular Aplicada. Instituto de Ciencia y Tecnología de Polímeros, CSIC., C/Juan de la Cierva, 3, 28006 Madrid, Spain
Dept. Síntesis, Estructura y Propiedades de Compuestos Orgánicos. Instituto de Química Orgánica General, CSIC, C/Juan de la Cierva 3, 28006 Madrid, Spain 
Dept. Nuevas Arquitecturas en Química de Materiales. Instituto de Ciencia de Materiales de Madrid, CSIC, C/Sor Juana Inés de la Cruz, 3. Cantoblanco, 28049 Madrid, Spain 
Green Chem., 2015, Advance Article

DOI: 10.1039/C4GC01326C  

New functionalized porous polyimides (PPIs-NO2, PPIs-NH2, and PPIs-NPy) were synthesized and characterized and the PPI-NPy materials were applied as supports to obtain heterogenized palladium-complexes (PPI-NPy-Pd). The PPI-NPy-Pd hybrid materials have behaved as very efficient heterogeneous catalysts in the Suzuki coupling reaction in water, affording the corresponding cross-coupling products in excellent yields. Furthermore, the catalysts have shown excellent chemical and thermal stability and good recyclability. No evidence of the leaching of Pd from the catalyst during the course of reaction was observed, suggesting true heterogeneity in our catalytic systems.