作者:Roman S. Begunov、Alexandr A. Sokolov、Valeria O. Belova、Artem N. Fakhrutdinov、Alexander S. Shashkov、Ivan V. Fedyanin
DOI:10.1016/j.tetlet.2015.08.014
日期:2015.10
reactivity of substituted pyrido[1,2-a]benzimidazoles toward electrophilic aromatic substitution has been studied. An unusual introduction of an electrophilic species at the ortho position with respect to an electron-withdrawing group was found, and investigated. Changing the substituent nature from a meta director to an ortho/para director did not alter the selectivity of electrophilic substitution. Assignment
已经研究了取代的吡啶并[1,2- a ]苯并咪唑对亲电子芳族取代的反应性。发现并研究了相对于吸电子基团在邻位不寻常地引入亲电子物质。将取代基的性质从间位元键更改为邻位/对位键不会改变亲电取代基的选择性。质子和碳光谱S的产品的分配ë氩反应进行了使用一维和二维NMR和选定的硝基-和dinitropyrido的结构[1,2一]苯并咪唑通过单晶X-射线衍射证实。