Stable σH-adducts as intermediates of the nucleophilic substitution of hydrogen in 3-(2-pyridyl)-1,2,4-triazines were obtained for the first time using ferrocenyllithium as a nucleophilic reagent. The three-dimensional structures of the reaction products were established based on the X-ray diffraction study of 1-[4-ethyl-6-phenyl-3-(2-pyridyl)-5(H)-1,2,4-triazin-5-yl]ferrocene.
以
二茂铁基
锂为亲核试剂,首次获得了稳定的σH加合物作为3-(2-
吡啶基)-
1,2,4-三嗪中氢亲核取代的中间体。基于1-[4-乙基-6-苯基-3-(2-
吡啶基)-5(H)-1,2,4-的X射线衍射研究,建立了反应产物的三维结构。
三嗪-5-基]
二茂铁。