Porous Polymerized Organocatalysts Rationally Synthesized from the Corresponding Vinyl-Functionalized Monomers as Efficient Heterogeneous Catalysts

Abstract

Porous polymerized organocatalysts (PPOs) have been successfully synthesized from the corresponding vinyl-functionalized monomers under solvothermal conditions. These PPOs have high surface areas, large pore volumes, hierarchical porosity, and good stability. Utilized as a typical organocatalyst, the porous polymerized 2,2,6,6-tetramethylpiperidine-1-oxyl (PPO-TEMPO) with stable free radicals shows high activities and excellent recyclabilities in selective oxidations of a variety of alcohols to the corresponding aldehydes or ketones. This synthesis method may open a new door for developing heterogeneous catalysts with high activity and good recyclability in the future.