催化作用
钯
共轭微孔聚合物
磷化氢
联苯
微型多孔材料
热稳定性
有机化学
高分子化学
营业额
化学
材料科学
作者
Noelia Esteban,Miguel Claros,Celedonio M. Álvarez,Ángel E. Lozano,Camino Bartolomé,Jesús M. Martı́nez-Ilarduya,Jesús M. de Miguel
出处
期刊:Polymers
[MDPI AG]
日期:2023-10-19
卷期号:15 (20): 4143-4143
标识
DOI:10.3390/polym15204143
摘要
A new set of microporous organic polymers (POPs) containing diphosphine derivatives synthesized by knitting via Friedel-Crafts has been attained. These amorphous three-dimensional materials have been prepared by utilizing diphosphines, 1,3,5-triphenylbenzene, and biphenyl as nucleophile aromatic groups, dimethoxymethane as the electrophilic linker, and FeCl3 as a promoting catalyst. These polymer networks display moderate thermal stability and high microporosity, boasting BET surface areas above 760 m2/g. They are capable of coordinating with palladium acetate, using the phosphine derivative as an anchoring center, and have proven to be highly efficient catalysts in Suzuki-Miyaura coupling reactions involving bromo- and chloroarenes under environmentally friendly (using water and ethanol as solvents) and aerobic conditions. These supported catalysts have achieved excellent turnover numbers (TON) and turnover frequencies (TOF), while maintaining good recyclability without significant loss of activity or Pd leaching after five consecutive reaction cycles.
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