Chinese Journal of Organic Chemistry ›› 2024, Vol. 44 ›› Issue (6): 2041-2048.DOI: 10.6023/cjoc202312028 Previous Articles     Next Articles

双子季铵盐氯胺的合成及抗菌应用

李令东a,b,*(), 张维伦b, 刘鹏飞b, 周子杰b, 周豪b, 杜中田a,b   

  1. a 大连理工大学精细化工国家重点实验室 辽宁盘锦 124221
    b 大连理工大学化工海洋与生命学院 辽宁盘锦 124221
  • 收稿日期:2023-12-29 修回日期:2024-02-08 发布日期:2024-03-12
  • 基金资助:
    国家自然科学基金(41977197); 国家自然科学基金(22172010)

Synthesis of Gemini-Quaternary Ammonium N-Chloramine Biocides for Antibacterial Applications

Lingdong Lia,b,*(), Weilun Zhangb, Pengfei Liub, Zijie Zhoub, Hao Zhoub, Zhongtian Dua,b   

  1. a State Key Laboratory of Fine Chemicals, Dalian University of Technology, Panjin, Liaoning 124221
    b School of Chemical Engineering and Life & Ocean Science, Dalian University of Technology, Panjin, Liaoning 124221
  • Received:2023-12-29 Revised:2024-02-08 Published:2024-03-12
  • Contact: * E-mail: lild@dlut.edu.cn
  • Supported by:
    National Natural Science Foundation of China(41977197); National Natural Science Foundation of China(22172010)

A series of Gemini-quaternary ammonium (QA) N-chloramine biocides N,N-bis(3-(3-chloro-4,4-dimethyl-2,5-di- oxoimidazolidin-1-yl)propyl)-N,N,N,N-tetramethylbutane-1,4-diaminium chloride (6)~N,N-bis(3-(3-chloro-4,4-dimethyl-2,5-dioxoimidazolidin-1-yl)propyl)-N,N,N,N-tetramethyldecane-1,10-diaminiumchloride (9) with varied spacers were synthesized via ploy-step strategy started from commercial 5,5-dimethylhydantoin. The structures of precursors and corresponding N-chloramines were characterized by nuclear magnetic resonance spectroscopy (NMR) and high-resolution mass spectra (HRMS). Antibacterial activity of N-chloramines was preliminarily tested against E. coli (ATCC 25922) and S. aureus (ATCC 25923) using previous Gemini-QA N-chloramine 5 as control. Antibacterial data showed that antibacterial potency of 5~9 declined first and then increased as the spacer length increased. Specifically, 9 (with spacer of C10H20) demonstrated the towering antibacterial capability, superior to 5~6 that exerted noticeable biocidal team effort. The greatly enhanced efficacy of 9 was probably caused by its preferable hydrophilic-lipophilic balance. It means that spacer length determines team effort biocidal and hydrophilic-lipophilic characteristic greatly contributes efficient contact killing. This study provides a series of efficacious cationic N-chloramine disinfectants, and also offers a vital reference for developing new N-chloramine antimicrobials with even higher efficacy.

Key words: Gemini-QA N-chloramine, ploy-step chemical synthesis, antibacterial activity, hydrophilic-lipophilic balance, biocidal team effort