A simple method for the synthesis of pyrazolo[1,5-d][1,2,4]triazines via the reaction of tetracarbonyl compounds with thiocarbonohydrazide
作者:Aleksandr I. Kobelev、Ekaterina E. Stepanova、Maksim V. Dmitriev、Andrey N. Maslivets
DOI:10.1007/s10593-019-02555-w
日期:2019.9
of cascade condensations with thiocarbonohydrazide to form substituted pyrazolo[1,5-d]-[1,2,4]triazines. The studied transformations proceed in good yields under catalyst-free conditions, and the reaction products are isolated without the use of column chromatography.
1,3,4,6-四羰基化合物与硫代碳酰肼发生一系列级联缩合反应,形成取代的吡唑并[1,5- d ]-[1,2,4]三嗪。所研究的转化在无催化剂条件下以高收率进行,并且不使用柱色谱法分离反应产物。