节点文献
1,2,4-三嗪类化合物研究(XXIV)──吡唑并-(5,4-e)-1,2,4-三嗪衍生物的合成
Chemistry of 1,2,4-Triazines (XXIV)──Synthesis of Pyrazolo-(5,4-e)-1,2,4-triazine Derivatives
【摘要】 先合成1,2,4-三嗪环,然后并接吡唑环,对标题化合物进行了合成研究。对1,2,4-三嗪环上的硫化反应进行了改进,解决了3个反应活性相近部位的选择性肼解问题;并发现了肼基与乙酸乙酯于室温下反应生成1,3,4- 二唑环的新反应。
【Abstract】 Two potential anti-tumour compounds,3-methylthio-7-oxo-7,7,8,9-tetrahy-dropyrazolo-(5,4-e)-1,2,4-triazine(9)and 3-methylthio-7-thio-7,7,8,9-tetrahydropyrazolo(5,4-e)-1,2,4-triazine(10)were synthesized.A new mild condition was introduced to the thionation of 1,2,4-triazine ring. Selective hyrazinolysis of three positions of similar reactivity on 1,2,4-triazine ring was improved. A new reaction was applied in the preparation of 1, 3,4-oxa-diazole compound from hydrazyl derivatives with ethyl acetate.
【关键词】 吡唑并-(5,4-e)-1,2,4-三嗪;
1,3,4- 二唑;
1,2,4-三嗪;
【Key words】 Pyrazolo-(5; 4-e)-1; 2; 4-triazine; 1; 3; 4-Oxa-diazole; 4-Triazine;
【Key words】 Pyrazolo-(5; 4-e)-1; 2; 4-triazine; 1; 3; 4-Oxa-diazole; 4-Triazine;
【基金】 国家自然科学基金
- 【文献出处】 高等学校化学学报 ,CHEMICAL RESEARCH IN CHINESE UNIVERSITIES , 编辑部邮箱 ,1995年04期
- 【分类号】O626
- 【被引频次】17
- 【下载频次】136