中华医学超声杂志

应用化学 ›› 1998, Vol. 0 ›› Issue (4): 115-116.

• 研究论文 • 上一篇    

超声波作用下羰基化合物的还原偶联反应

吴晓云1, 阎伟1, 李钢1, 周峥嵘1, 陶凤岗1, 崔结2   

  1. 1. 复旦大学化学系 上海 200433;
    2. 湖州师范专科学校化学系 湖州
  • 收稿日期:1997-12-12 修回日期:1998-04-06 出版日期:1998-08-10 发布日期:1998-08-10

The Reductive Coupling of Carbonyls to Olefins under Ultrasonic Action

Wu Xiaoyun1, Yan Wei1, Li Gang1, Zhou Zhengrong1, Tao Fenggang1, Cui Jie2   

  1. 1. Department of Chemistry, Fudan University, Shanghai 200433;
    2. Department of Chemistry, Huzhou Normal College, Huzhou
  • Received:1997-12-12 Revised:1998-04-06 Published:1998-08-10 Online:1998-08-10

PDF

435

被引次数

42 | 3

摘要： 超声波在一些有机反应中有明显的促进作用[1], Luche等认为超声波的作用有两种主要类型[2].一类是涉及电子转移的自由基或离子一自由基型反应,由于超声波的空化作用所产生的局部高温高压可以促进电子转移,从而明显地加快反应速度;对大多数离子型反应,超声波只能起到机械的物理作用.

关键词: 羰基化合物, 还原偶联, 超声波, 低价钛

Abstract: The reactions of carbonyls with a low-valent titanium reagent prepared by TiCl4 with Mg in THF were carried out under ultrasonic action at room temperature for 10 min to 1h and corresponding olefins were obtained in good yields.The results indicate that the titanium-induced reductive coupling of carbonyls to olefins is directly affected by ultra sonic dueto the electron transfer process.

Key words: carbonyl compound, reductive coupling, ultrasonic, low-valent titanium

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