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

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

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E. Rangel Rangel,^a   E. M. Maya,^a   F. Sánchez,*^b  J. G. de la Campa^a and   M. Iglesias*^c  

*

Corresponding authors

^a

Dept. Química Macromolecular Aplicada. Instituto de Ciencia y Tecnología de Polímeros, CSIC., C/Juan de la Cierva, 3, 28006 Madrid, Spain

^b

Dept. Síntesis, Estructura y Propiedades de Compuestos Orgánicos. Instituto de Química Orgánica General, CSIC, C/Juan de la Cierva 3, 28006 Madrid, Spain 
E-mail: felix-iqo@iqog.csic.es

^c

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 
E-mail: marta.iglesias@icmm.csic.es

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.