有机化学 ›› 2026, Vol. 46 ›› Issue (6): 2399-2408.DOI: 10.6023/cjoc202602004 上一篇    下一篇

研究论文

电化学促进芳香炔、芳基硫酚和醇三组分合成β,β-二烷氧基硫醚

张文升a,b, 张建航b, 刘建明b,*(), 汤清虎b,*()   

  1. a 洛阳文化旅游职业学院教育学院 河南洛阳 471000
    b 河南师范大学化学化工学院 绿色化学介质与反应省部共建教育部重点实验室 河南新乡 453007
  • 收稿日期:2026-02-03 修回日期:2026-03-22 发布日期:2026-04-13
  • 通讯作者: 刘建明, 汤清虎
  • 基金资助:
    河南省自然科学基金(262300421690); 河南省高等学校重点科研项目计划基础研究专项(26ZX009)

Electrochemical Three-Component Synthesis of β,β-Dialkoxy Sulfides from Terminal Alkynes, Thiophenols, and Alcohols

Wensheng Zhanga,b, Jianhang Zhangb, Jianming Liub,*(), Qinghu Tangb,*()   

  1. a Education College, Luoyang Vocational College of Culture and Tourism, Luoyang, Henan 471000
    b Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, College of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007
  • Received:2026-02-03 Revised:2026-03-22 Published:2026-04-13
  • Contact: Jianming Liu, Qinghu Tang
  • Supported by:
    Natural Science Foundation of Henan Province(262300421690); Basic Research Project of Henan Provincial Key Scientific Research Project(26ZX009)

以芳香炔、芳基硫酚与醇为三组分原料, 经电化学反应合成β,β-二烷氧基硫醚. 该策略避免使用过量氧化剂和金属催化剂. 本反应采用双铂电极体系构建电解池阴阳两极, 以高氯酸锂作为电解质, 乙腈作为溶剂, 在常温常压条件下以12 mA的恒定电流持续电解5 h, 以良好的收率获得了硫醚化合物. 机理研究表明, 该反应涉及阳极氧化生成自由基阳离子中间体、三元环中间体生成和自由基氧化偶联等过程. 该策略对多种官能团展现出优异的兼容性, 为构建C—S键提供了一种绿色简洁的新方法.

关键词: 电合成, 芳香炔, β, β-二烷氧基硫醚

The electrochemical construction of C—S bonds enables the efficient synthesis of β,β-dialkoxy thioethers from terminal alkynes, thiophenols, and alcohols. This method eliminates the need for stoichiometric oxidants and metal catalysts. By employing an electrochemical platform to provide a stable current, two platinum electrodes were utilized as the anode and cathode in an electrolytic cell, with lithium perchlorate as the electrolyte and acetonitrile as the solvent. Under room temperature and pressure, electrolysis was conducted at a constant current of 12 mA for 5 h, affording the targeted thioether compound in good yield. Mechanistic studies revealed that the reaction involves anodic oxidation to generate radical cation intermediates, formation of a three-membered cyclic intermediate, and radical oxidative coupling processes. This strategy demonstrates excellent compatibility with diverse functional groups, offering a green and sustainable alternative for C—S bond formation.

Key words: electrosynthesis, terminal alkynes, β, β-dialkoxy sulfides