Synthesis of Structured Porous Polymers with Acid and Basic Sites and Their Catalytic Application in Cascade-Type Reactions

• DOI: 10.1021/cm400123d
• Publication Date: 2013-02-27T17:11:54Z
• Authors: Estíbaliz Merino; Ester Verde-Sesto; Eva M. Maya; Marta Iglesias; Félix Sánchez; Avelino Corma
• Keywords: Heterogeneous catalysis; QUIMICA ORGANICA; Organocatalysis; One-pot tandem reaction; 01 natural sciences; Bifunctionalized solids; Porous aromatic frameworks; 0104 chemical sciences

We acknowledge to the Direccion General de Investigacion Cientifica y Tecnica of Spain (Project Nos. MAT2011-29020-C02-02 and Consolider-Ingenio 2009-CSD-0050-MULTI-CAT) for financial support. E.M. thanks CSIC for a contract of "Junta de Ampliacion de Estudios" program.<br/>[EN] We described the use of one porous polymeric aromatic framework (PPAF) with a 9,9'-spiro-bisfluorene unit as a support in heterogeneous catalysis. The material was functionalized with acid and base active sites and used as a bifunctional catalyst in a model cascade reaction. This catalyst was recycled up to eight times with only a small loss of activity.<br/>