Tetraalkyl-(2)-tetrazenes are attacked by azodicarboxylates at the dialkylamino nitrogen. By intramolecular proton abstraction, the betain 3 first formed is converted into the ylide 4 which then rearranges into 5. Kinetics of the reaction are investigated by UV spectroscopy; a mechanism is proposed.
四烷基-(2)-四
烯在二烷基
氨基
氮上被偶
氮二
羧酸盐攻击。通过分子内质子提取,首先形成的
甜菜碱3被转化为叶立德4,其然后重排为5。通过紫外光谱研究反应的动力学。提出了一种机制。