Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 20, Issue 17, Pages 5111-5120Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201304163
Keywords
cyclopropanation; heterogeneous catalysts; porous aromatic frameworks; recyclability; supported catalysts
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Funding
- Direccion General de Investigacion Cientifica y Tecnica (MINECO) Spain [MAT2011-29020-C02-02, Consolider-Ingenio 2010-CSD-0050-MULTICAT]
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Starting from mononitrotetrakis(iodophenyl)methane as monomer, we report the preparation of the first pre-functionalised porous aromatic frameworks (PAFs) and their application as supports for organometallic catalysts. Neutral coordinate imino-pyridine Schiff base (PAF-NPy) or chiral bis-amino (PAF-NPro) ligands were obtained by post-synthetic treatment of PAF-NH2 and treated with copper(I) or rhodium(I) to yield the corresponding supported transition-metal catalysts. The as-prepared PAF-NN-M catalysts exhibited activity and selectivity similar to that of the corresponding homogeneous catalysts and were easily removed from reaction media and recycled without loss of activity or selectivity.
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