Chitosan-Coated Metal–Organic-Framework Nanoparticles as Catalysts for Tandem Deacetalization–Knoevenagel Condensation Reactions
Zi-Song Zhao, Yue Zhang, Ting Fang, Zheng‐Bo Han, Fushun Liang
Abstract
A series of chitosan (CS)-coated metal–organic-framework (MOF) nanoparticles, which combined excellent chemical stability, thermal stability, and recyclability, were synthesized by an in situ growth method. The CS-coated MOF nanoparticles consist of stable MIL-101(Cr) as the core and CS as the shell, with MIL-101(Cr) providing Lewis acidic sites and CS providing both Brønsted acidic sites and Lewis basic sites. Thus, the CS-coated MOF nanoparticles exhibited outstanding catalytic properties for a one-pot tandem deacetalization–Knoevenagel condensation reaction, and both the catalytic activity and selectivity were remarkable.
Topics & Concepts
Knoevenagel condensationCatalysisNanoparticleChitosanThermal stabilityChemistryLewis acids and basesTandemMetal-organic frameworkSelectivityMetalPolymer chemistryMaterials scienceOrganic chemistryNanotechnologyAdsorptionComposite materialMetal-Organic Frameworks: Synthesis and ApplicationsCovalent Organic Framework ApplicationsChemical Synthesis and Reactions