Fourier transform ion cyclotron resonance mass spectrometry has been employed to systematically investigate the intrinsic (solvent-free) reactivity of a 1,3-dehydrobenzene (m-benzyne) with a pyridinium charge site in the 5-position. The m-benzyne was generated by using a combination of ion−molecule reactions and photodissociation and isolated prior to examination of its gas-phase reactions. The ionic
傅里叶变换离子回旋共振质谱已被用于系统地研究 1,3-脱氢苯(间苯)在 5 位具有
吡啶鎓电荷位点的固有(无溶剂)反应性。间苯是通过使用离子-分子反应和光解离的组合产生的,并在检查其气相反应之前进行分离。将离子反应产物和反应效率(二级反应速率常数/碰撞速率常数)与对异构邻苄和类似的苯基单自由基测量的那些进行比较。间苯产生一些为邻苯形成的产物,但它也通过相应苯基自由基的不同自由基途径进行反应。对于邻苯没有观察到这些自由基途径。然而,对间苄测量的反应效率明显低于对类似苯基或异构邻苄测量的反应效率。这些发现是...