Formation of Triazinium-Imidothioate Zwitterions and Their Role as Key Intermediates for Novel SN(ANRORC) Reaction Pathways
作者:Kurt Wermann、Martin Walther、Wolfgang Günther、Helmar Görls、Ernst Anders
DOI:10.1002/ejoc.200390196
日期:2003.4
The formation of highly reactive zwitterionic triaziniumimidothioate intermediates 10 from bis(1,3,4-thiadiazolo)-1,3,5-triazinium halides is reported. These intermediates are the first structures to be isolated from the reaction pathway between bis(1,3,4-thiadiazolo)-1,3,5-triazinium halides 1 and benzylamines 2. The reaction between 1 and 2 has a very complicated hypersurface and can yield unusual
据报道,由双 (1,3,4-噻二唑并)-1,3,5-triazinium 卤化物形成高反应性两性离子三嗪亚胺硫酸酯中间体 10。这些中间体是第一个从双 (1,3,4-噻二唑并)-1,3,5-三嗪卤化物 1 和苄胺 2 之间的反应途径中分离出来的结构。 1 和 2 之间的反应具有非常复杂的超表面和可以产生不寻常的双 (1,2,4-triazinium)-1,3,5-triazinium 卤化物 6, [1,2,4]triazolo[1,3,4]thiadiazolo[1,3,5]triazinium 卤化物 7或高度取代的胍 5. 6 和 7 的形成可以理解为 SN(ANRORC) 过程。正如三环阳离子 6 所证明的那样,这些化合物与 7 一起可能在进一步的合成应用中受到关注。盐 6 与 KOH/tBuOK 反应以良好至极好的产率得到新型胺 16。B3LYP/6−311++G(d,p)计算和