化学学报 ›› 1988, Vol. 46 ›› Issue (6): 608-611. 上一篇    下一篇

研究论文

二溴卡宾产生方法的改进

许临晓;陶凤岗;于同隐   

  1. 复旦大学化学系
  • 出版日期:1988-06-15 发布日期:1988-06-15

An improved method for the generation of dibromocarbene

XU LINXIAO;TAO FENGGANG;YU TONGYIN   

  • Online:1988-06-15 Published:1988-06-15

研究了用超声和相转催化结合使溴仿与固体氢氧化钠反应生成二溴卡宾的改良方法. 用这一方法只需20-30分钟就可以在烯烃存在下获得高得率的1,1-二溴环丙烷, 并且具有更方便的纯化过程.

关键词: 甲烷 P, 辐射, 相转移催化, 环丙烷 P, 溴代烃, 碳烯, 烯烃 P, 加成反应, 超声处理, 氢氧化钠

An improved method for the generation of dibromocarbene is developed which combines ultrasonication with phase-transfer catalysis in the reaction of bromoform with solid sodium hydroxide. High yields of 1,1-dibromocyclopropane derivatives can be obtained in the presence of alkenes by this method in only 20-30 min and with more convenient puritication process.

Key words: METHANE P, RADIATION, PHASE TRANSFER CATALYSIS, CYCLOPROPANE P, BROMOHYDROCARBON, CARBENE, ALKENE P, ADDITION REACTION, ULTRASONIC PROCESSING, SODIUM HYDROXIDE

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