Synthesis of Novel 1-(1,5-Diaryl-1,10b-Dihydropyrrolo- [1,2-A][1,2,4]Triazolo[3,4-C]Pyrazin-3-Yl)Ethanones Via 1,3-Dipolar Cycloaddition of Nitrilimine
作者:Yulin Huang、Demin Ren、Xianyong Yu、Ju-Lan Zeng、Xiaofang Li
DOI:10.1007/s10593-020-02626-3
日期:2020.1
3-dipolar cycloaddition of nitrilimine, generated in situ from (Z)-N-aryl-2-oxopropanehydrazonoyl bromide and Et3N, to 3-arylpyrrolo[ 1,2-a]pyrazine afforded novel 1-(1,5-diaryl-1,10b-dihydropyrrolo[1,2-a][1,2,4]triazolo[3,4-c]pyrazin-3-yl)ethanones in moderate yields. The structures of all the products were characterized thoroughly by NMR, IR, and HRMS.
由(Z)-N-芳基-2-氧代丙烷肼基甲酰氯溴化物和Et3N原位生成的腈亚胺的1,3-偶极环加成反应生成3-芳基吡咯并[1,2- a ]吡嗪,提供了新型的1-(1,5-二芳基-1,10b-二氢吡咯并[1,2- a ] [1,2,4]三唑并[3,4- c ]吡嗪-3-基)乙炔,产率中等。所有产品的结构均通过NMR,IR和HRMS进行了全面表征。