作者:Jakub Styskala、Jakub Styskala、Jan Slouka、Petr Cankar
DOI:10.3987/com-07-11267
日期:——
(3-methyl-1H-pyrrole)-2,4-dicarbamate 4. These ones were cyclized in a alkaline medium to ethyl (2-aryl-5-methyl-3-oxo-2,3-dihydro-7H-pyrrolo[3,2-e][1,2,4]triazin-6-yl)carbamates 6 and tested for their stability. The starting carbamate 4 was prepared by a multistep synthesis from diethyl 3-methyl-1H-pyrrole-2,4-dicarboxylate 1.
相应的 2-芳基腙 5 通过重氮盐与 (3-甲基-1H-吡咯)-2,4-二氨基甲酸二乙酯 4 的偶合得到。这些在碱性介质中环化成乙基 (2-芳基-5-甲基-3-oxo-2,3-dihydro-7H-pyrrolo[3,2-e][1,2,4]triazin-6-yl)carbamates 6 并测试其稳定性。起始氨基甲酸酯 4 通过多步合成从 3-甲基-1H-吡咯-2,4-二羧酸二乙酯 1 制备。