...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Physical Organic Chemistry >AMINOLYSIS OF O-(2,4-DINITROPHENYL)-p,p′-DISUBSTITUTED BENZOPHENONE OXIMES IN BENZENE: EVIDENCE FOR HIRST'S MECHANISM
【24h】

AMINOLYSIS OF O-(2,4-DINITROPHENYL)-p,p′-DISUBSTITUTED BENZOPHENONE OXIMES IN BENZENE: EVIDENCE FOR HIRST'S MECHANISM

机译：苯中O-（2,4-二苯并菲）-p，p'-二取代苯甲酮肟的酰胺分解：证明其机理

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The reactions of O-(2,4-dinitrophenyl)-substituted p,p′-dimethoxybenzophenone oxime, p,p′-fluorobenzophenone oxime and p,p′-dichlorobenzophenone oxime with pyrrolidine and piperidine in benzene were found to be third order in amine, with no uncatalytic route. The overall rate is a combined effect of rates of two routes, one of which increases and the other decreases with rise in temperature. The relative contribution of the two routes to overall rate varies with temperature, nucleofugicity of the substrate, nucleophilicity and concentration of amine. As a result, the effect of temperature on the overall rate for some reactions is positive and for others negative. This unusual temperature effect on the overall rate supports Hirst's mechanism.
机译：发现O-（2,4-二硝基苯基）取代的对位，p'-二甲氧基二苯甲酮肟，p，p'-氟二苯甲酮肟和p，p'-二氯二苯甲酮肟与吡咯烷和哌啶在苯中的反应是三级的胺，没有非催化路线。总速率是两种路径速率的综合影响，其中一种随着温度的升高而增加，而另一种随温度的升高而减小。两种途径对总速率的相对贡献随温度，底物的核融合性，亲核性和胺浓度而变化。结果，对于某些反应，温度对总速率的影响为正，而对于另一些反应，为负。这种对总速率的异常温度影响支持了赫斯特的机制。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号