高等学校化学学报2024，Vol.45Issue(7)：166-172,7.DOI:10.7503/cjcu20240159
有机磷腈盐/三乙基硼二元催化体系协同催化环氧化物与二氢香豆素的开环交替共聚
Ring-opening Alternating Copolymerization of Epoxides with Dihydrocoumarin Catalyzed by Phosphazenium/Et3B Binary Catalytic System
摘要
Abstract
The ring-opening alternating copolymerization(ROAC)of 3,4-dihydrocoumarin(DHC)with various epoxides was successfully achieved using a binary catalytic system consisting of tri[tris(dimethylamino)phosphora-nylidenamino]phosphonium chloride(P4+Cl‒)and triethylborane(TEB).The impact of polymerization temperature and catalyst loading on the catalytic activity and selectivity of ROAC was investigated.The P4+Cl‒/TEB catalytic system was found to be highly efficient and controlled in the ROAC process,preventing the intramolecular transesteri-fication.This results in polyesters with high alternating structures,controlled molecular weights,and preserved functional groups fidelity.The effectiveness of the catalyst system is supported by kinetic investigations,proton nuclear magnetic resonance(1H NMR)and size exclusion chromatography(SEC)spectra,as well as matrix-assisted laser desorption/ionization-time of flight-mass spectrometry(MALDI-TOF-MS)analysis.关键词
磷腈盐/有机催化/酚内酯/开环交替共聚/聚酯Key words
Phosphazenium salt/Organocatalysis/Phenolic lactone/Ring-opening alternating copolymerization/Polyester分类
化学引用本文复制引用
姜春环,王俊麒,刘晓雨,杨烨,任传利,李志波..有机磷腈盐/三乙基硼二元催化体系协同催化环氧化物与二氢香豆素的开环交替共聚[J].高等学校化学学报,2024,45(7):166-172,7.基金项目
国家自然科学基金(批准号:22031005)资助.Supported by the National Natural Science Foundation of China(No.22031005). （批准号:22031005）
