Phosphotungstic Anions-Based Imidazolium Porous Ionic Polymer for Oxidation of Alcohols with Hydrogen Peroxide

Published: Jan. 1, 2025

An imidazolium-based hyper-crosslinked porous ionic polymer (IHPiP) immobilized phosphotungstic (PW) anions hybrid catalyst (IHPiP-PW) was synthesized based on a one-pot Friedel–Crafts alkylation and quaternization reaction, followed by anion exchange reaction. The obtained IHPiP-PW exhibited high specific surface area of 615 m2·g-1 containing plentiful hierarchical pores. effective in the oxidation 1-phenylethanol into acetophenone with H2O2 to give conversion 95.7%, quantitative selectivity, good efficiency. A remarkable turnover number 3300 initial frequency 914.0 h-1 were at molar ratio substrate PW 4000. Kinetic study demonstrated that obeyed pseudo-first-order kinetics apparent activation energy calculated be 26.116 kJ·mol−1. This catalytic system tolerant wide range substrates. Moreover, could readily recovered effectively reused for six cycles without significant activity loss.

Language: Английский

Phosphotungstic anions-based imidazolium porous ionic polymer for oxidation of alcohols with hydrogen peroxide

Microporous and Mesoporous Materials, Journal Year: 2025, Volume and Issue: unknown, P. 113571 - 113571

Published: March 1, 2025

Language: Английский

Visible-light-induced ring-opening cross-coupling of cycloalcohols with vinylazaarenes and enones via β-C-C scission enabled by proton-coupled electron transfer

Chinese Chemical Letters, Journal Year: 2024, Volume and Issue: 36(2), P. 110167 - 110167

Published: June 22, 2024

Language: Английский