• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of mass spectrometry: JMS >Gas-phase ion-molecule reaction of alpha-phenylvinyl cation towards substituted benzenes in the environment of an ITMS
【24h】

Gas-phase ion-molecule reaction of alpha-phenylvinyl cation towards substituted benzenes in the environment of an ITMS

机译：ITMS环境中α-苯基乙烯基阳离子对取代苯的气相离子分子反应

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Ion-molecule reactions between the α-phenylvinyl cation (α-PVC) and mono-substituted benzenes have been investigated using a quadrople ion-trap mass spectrometer. The α-PVC, generated by chemical ionization from phenylacetilene, was found to react selectively with mono-substituted benzenes bearing electron withdrawing groups to give the product ions [M + 103] ~+ and the trans-vinylating product ions [M + 25]~+. To characterize the reaction products, a combination of collision-induced dissociation, isotope-labeling experiments and model compounds were used. The results indicate, in addition to direct heteroatom alkylation, high extent of ortho attack. We attributed the positional selectivity of the α-PVC to the nature of the substituent on the neutral molecule. In particular, hydroxy and amino groups promoted the alkenylation at ortho position.
机译：使用四重离子阱质谱仪研究了α-苯基乙烯基阳离子（α-PVC）与单取代苯之间的离子分子反应。发现由苯乙炔化学电离生成的α-PVC与带有吸电子基团的单取代苯选择性反应，生成产物离子[M + 103]〜+和反乙烯基化产物离子[M + 25] 〜+。为了表征反应产物，使用了碰撞诱导的解离，同位素标记实验和模型化合物的组合。结果表明，除了直接的杂原子烷基化以外，邻位攻击的程度也很高。我们将α-PVC的位置选择性归因于中性分子上取代基的性质。特别地，羟基和氨基促进邻位的烯基化。

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