Chinese Journal of Organic Chemistry ›› 2026, Vol. 46 ›› Issue (1): 233-240.DOI: 10.6023/cjoc202506003 Previous Articles     Next Articles

ARTICLES

席夫碱型Fe(III)配合物催化二氧化碳和环氧化物制备环状碳酸酯

刘涛a, 周永博a, 郎同庆b, 牛海波b, 陈飞a, 杜智宏a, 薄春博a, 李敏a,*(), 刘宁a,*()   

  1. a 石河子大学化学化工学院 化工绿色过程兵团重点实验室 新疆石河子 832003
    b 晨光生物科技集团图木舒克有限公司 新疆图木舒克 843900
  • 收稿日期:2025-06-02 修回日期:2025-07-28 发布日期:2025-09-03
  • 通讯作者: 李敏, 刘宁
  • 基金资助:
    国家自然科学基金(22168034); 新疆维吾尔自治区“天池英才”计划、第三师图木舒克市科技计划(KY2025JBGS01); 兵团英才及兵团研究生创新计划(BTYJXM-2024-K26)

Schiff Base Type Fe(III) Complexes Catalyzed Carbon Dioxide and Epoxides for Preparing Cyclic Carbonates

Liu Taoa, Zhou Yongboa, Lang Tongqingb, Niu Haibob, Chen Feia, Du Zhihonga, Bo Chunboa, Li Mina,*(), Liu Ninga,*()   

  1. a State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang 832003
    b Chenguang Biotechnology Group Tumushuke Co., Ltd., Tumushuke, Xinjiang 843900
  • Received:2025-06-02 Revised:2025-07-28 Published:2025-09-03
  • Contact: Li Min, Liu Ning
  • Supported by:
    National Natural Science Foundation of China(22168034); Tianchi Talent Project of Xinjiang Uygur Autonomous Region, the Science and Technology Project of 3rd Division Tumushuke City(KY2025JBGS01); Bingtuan Talents and the Bingtuan Graduate Research Innovation Project of Production and Construction(BTYJXM-2024-K26)

To achieve the high-value utilization of carbon dioxide (CO₂), two Schiff base-type Fe(III) complexes were synthesized, and their catalytic performance in the preparation of cyclic carbonates through the cycloaddition reaction between CO₂ and epoxides was investigated. The results showed that bis(((2-(1H-pyrazol-1-yl)phenyl)imino)methyl)-4,6-di-tert-butylphenol) iron(III) tetrabromide iron(III) (Cat 2) exhibited high catalytic activity and substrate universality for various epoxides (including terminal, aromatic, and sterically hindered epoxides) under solvent-free and cocatalyst-free conditions at 80 °C and 0.50 MPa CO2 pressure with product yields ranging from 89% to 94%.. Through X-ray photoelectron spectroscopy (XPS) and high-resolution mass spectrometry (HRMS) analyses, the Fe(III) valence state and active intermediates were clarified, and the catalytic mechanism was proposed. The Fe(III) center acts as a Lewis acid to activate the epoxide, while the bromide ions dissociated from the tetrabromoferrate anion serve as nucleophiles to promote the ring-opening of the epoxide, and their synergistic effect accelerates the reaction. This Fe catalytic system provides a catalyst design idea for CO₂ conversion.

Key words: cyclic carbonate, Schiff base type Fe complex, carbon dioxide, epoxide, cycloaddition reaction