Triazolopyridines. 14. Substitution reactions of 7-amino[1,2,3]triazolo[1,5-a]pyridines.
作者:Amparo Asensio、Belen Abarca、Gurnos Jones、Michael B. Hursthouse、K.M. Abdul Malik
DOI:10.1016/s0040-4020(01)86272-4
日期:1993.1
Reaction between 7-aminotriazolopyridines 1 or 2 and sulphuric acid gives hydroxyalkylpyridines 3 and 4 ; bromination gives brominated pyridine 5 or triazolopyridine 6. The anions from amines 1 or 2 are ambident, acylating on N but alkylating on N or on C6; in the latter case triazolylalkenylcyanides 16 – 20 or the 6,6-dialkylated derivative 19 are obtained. An X-ray diffraction study has confirmed
7-氨基三唑并吡啶1或2与硫酸反应,得到羟烷基吡啶3和4。溴化得到溴化吡啶5或三唑并吡啶6。来自胺1或2的阴离子是环境性的,在N上酰化但在N或C6上烷基化;在后一种情况下triazolylalkenylcyanides 16 - 20或6,6-二烷基化衍生物19获得。X射线衍射研究已证实结构19。