Silver Nanoparticles Incorporated Covalent Organic Framework Catalyzed Sustainable Synthesis of Cyclic Carbonates and Oxazolidinones Under Atmospheric CO2 Pressure: A Novel Approach of CO2 Utilization

Abstract

This work presents the facile synthesis of Ag nanoparticles-decorated porous crystalline covalent organic frameworks (namely, Ag@TPT-TP COF) having exceptional surface area and CO₂ uptake capacity to facilitate CO₂-cyclization reactions to produce highly value-added compounds. Several characterization techniques have been used to thoroughly analyze the as-synthesized nanomaterial, Ag@TPT-TP COF. The synthesized Ag NPs-embedded 2D COF serves as a stable and active porous catalyst for the synthesis of cyclic carbonates from a variety of epoxides and derivatives of 2-oxazolidinone from propargyl alcohols and amines with high yield and selectivity of the corresponding products via fixation of CO₂ (1 atm) under sustainable reaction conditions. The functionalized porous catalyst (Ag@TPT-TP COF) exhibited exceptional recyclability for both reactions up to six consecutive runs without any visible deterioration in the catalytic activity. Consequently, formation of wide range of compounds are dramatically expanded by these organic transformations and provide a possible pathway for CO₂ functionalization to get beyond the energy barrier in this area.