作者:Robin D. Allan、Jeremy R. Greenwood、Trevor W. Hambley、Jane R. Hanrahan、David E. Hibbs、Samia Itani、Hue W. Tran、Peter Turner
DOI:10.1039/b316190k
日期:——
Reaction of sodium azide with 4-methyl-3,5,6-tribromopyridazine results in the formation of 3,5,6-triazide intermediate which could cyclise to give two possible bicyclic products while ab initio calculations show that the formation of a tricyclic compound is extremely energetically unfavourable. However, experimentally, only one major product is isolated. The structure of this unstable product has been conclusively established by X-ray crystallography as 3,5-diazido-4-methyl[1,5-b]tetrazolopyridazine confirming theoretical predictions.
叠氮化钠与4-甲基-3,5,6-三溴哒嗪反应生成3,5,6-三叠氮中间体,该中间体可环化形成两种可能的双环产物,而从头计算表明形成三环化合物的能垒极高。然而,实验上仅分离到一种主要产物。通过X射线晶体学确证了这种不稳定产物的结构为3,5-二叠氮基-4-甲基[1,5-b]四唑哒嗪,证实了理论预测。