Synthesis of some novel 3,7-dimethyl-4<i>H</i>-pyrazolo[5,1-c][1,2,4]triazin-4-ones
作者:Ahmed A. El-Barbary、Mahmoud A. El-Badawi、Yasser M. Loksha
DOI:10.1002/jhet.5570380328
日期:2001.5
Some novel 3,7-dimethyl-6H-pyrazolo[5,1-c][1,2,4]triazin-4-ones were prepared (3a-g). Compounds 3a,b were treated with hydrazines to afford various products 7a,b, 8a,b, 9 and lla,b depending on the type of hydrazine derivative and reaction conditions. The benzoyloxyimino-pyrazolo[5,1-c][1,2,4]triazines (13a,b) were synthesized by refluxing of compounds 3a,b with hydroxylamine hydrochloride to afford
制备了一些新颖的3,7-二甲基-6 H-吡唑并[5,1-c] [1,2,4]三嗪-4-酮(3a-g)。根据肼衍生物的类型和反应条件,用肼处理化合物3a,b,得到各种产物7a,b,8a,b,9和11a,b。苯甲酰氧基亚氨基-吡唑并[5,1-c] [1,2,4]三嗪(13a,b)是通过化合物3a,b与羟胺盐酸盐的回流反应合成的,得到相应的肟衍生物,然后用苯甲酰氯处理。