New Findings in Photochemistry of<i>p</i>-Nitrophenyl Azide in the Presence of an Amine: Generation and Trapping of Enamines
作者:Shigeru Murata、Yoko Mori、Youji Satoh、Ryuichi Yoshidome、Hideo Tomioka
DOI:10.1246/cl.1999.597
日期:1999.7
4,5-Dihydro-5-diethylamino-1-(p-nitrophenyl)-1,2,3-triazole (3) was obtained in the photolysis of p-nitrophenyl azide (1) in triethylamine (TEA), for which the structure was determined by X-ray crystallographic analysis. The formation of the triazoline 3 is reasonably explained in terms of trapping of N,N-diethylvinylamine (5) generated in situ with the starting azide 1. The reaction sequence involving a single electron transfer from TEA to the electronically excited azide is proposed for the formation of the enamine 5.
对硝基苯基叠氮化物 (1) 在三乙胺 (TEA) 中光解,得到 4,5-二氢-5-二乙氨基-1-(对硝基苯基)-1,2,3-三唑 (3),其中通过X射线晶体学分析确定结构。三唑啉 3 的形成可以通过用起始叠氮化物 1 捕获原位生成的 N,N-二乙基乙烯基胺 (5) 来合理解释。提出了涉及从 TEA 到电子激发叠氮化物的单电子转移的反应序列: 5. 烯胺的形成