有机化学    

研究论文

功能化离子液体[BMim]OH催化α-卤代物与亚磺酸钠盐合成β-酮砜及砜类化合物

王浩洋a, 成琳a, 曾星a, 韩利民a, 杜玉英*,a, 竺宁*,a   

  1. a内蒙古工业大学化工学院 二氧化碳资源化利用自治区高等学校重点实验室 内蒙古自治区 CO2 捕集与资源化工程技术研究中心 呼和浩特 010051
  • 收稿日期:2024-06-08 修回日期:2024-08-03
  • 基金资助:
    内蒙古自治区自然科学基金(2023LHMS02011); 自治区直属高校基本科研业务费(JY20240034); 内蒙古工业大学博士基金(BS2021023); 内蒙古自治区高等学校CO2资源化利用创新团队项目( NMGIRT2212 )资助项目.

[BMim]OH-Catalyzed the Coupling Reaction of the Synthesis β-Ketosulfones and Sulfone Compounds between α-Halides and Sodium Sulfinate

Wang Haoyanga, Cheng Lina, Zeng Xinga, Han Limina, Du Yuying*,a, Zhu Ning*,a   

  1. aCollege of Chemical Engineering, Inner Mongolia University of Technology, Key Laboratory of CO2 Resource Utilization at Universities of Inner Mongolia Autonomous Region, Inner Mongolia Engineering Research Center for CO2 Capture and Utilization Hohhot, China, 010051
  • Received:2024-06-08 Revised:2024-08-03
  • Contact: *E-mail: hhhtdyy@163.com; zhuning@imut.edu.cn
  • Supported by:
    Natural Science Foundation of Inner Mongolia (2023LHMS02011); Fundamental Research Funds for the Inner Mongolia Autonomous Universities (JY20240034); Research Funds of Inner Mongolia University of Technology (BS2021023); Innovative Research Team in Universities of Inner Mongolia Autonomous Region (NMGIRT2212).

以功能化离子液体氢氧化1-丁基-3-甲基咪唑([BMim]OH)为催化剂,由α-卤代物与亚磺酸钠盐通过偶联反应构建了β-酮砜和砜类化合物的绿色合成方法。反应在50%乙醇水溶液中经过2~6小时以65~99%的产率获得34种不同的β-酮砜和砜。此外,该反应可以放大至克级规模,并且[BMim]OH催化剂可以循环使用至少4次,产率无明显下降。机理研究表明,反应过程中,催化量的[BMim]OH首先与苯亚磺酸根(PhSO2-)作用形成中间体1-丁基-3-甲基咪唑苯亚磺酸盐([BMim][PhSO2]),之后利用中间体S-的强亲核性与α-溴代苯乙酮反应,从而促进该SN2反应的进行。反应方法具有操作简便、产率高、官能团兼容性好、无需使用金属催化剂及对环境友好等优点。

关键词: 氢氧化1-丁基-3-甲基咪唑, 催化, 偶联反应, β-酮砜和砜

The coupling reaction of α-halides and sodium sulfinate was catalyzed by functionalized ionic liquid [BMimlOH. 34 types β-ketone sulfones and sulfone compounds were obtained with medium to high yields (65-99%) under mild and environmentally benign conditions. The reaction was scaled up to the gram scale, and [BMim]OH catalyst was recycled for 4 times without a significant decrease in yield. The results of 1H NMR studies indicated that the initial event should be the catalysis [BMim]OH interacted with the raw material sodium sulfinate to lead to the formation of an intermediate [BMim][PhSO2] in the reaction. Because the S- anion of intermediate had strong nucleophilicity, it reacted with α-bromoacetophenone, which promoted the progress of the SN2 reaction. The method offered advantages including simplicity of operation, stable and cycling catalyst, high yields, good functional group compatibiLity, metal-free catalysts, and environmental friendliness.

Key words: 1-butyl-3-methylimidazole hydroxide, catalysis, couple reaction, β-ketone sulfone and sulfones