第 37 卷第 4 期Vol. 37 No. 4
2007 年 8 月Aug 2007

所属栏目:染料、颜料及涂料

3,5-二氨基-4-苯偶氮基吡唑合成与表征
汪营磊,张志忠,王伯周,张海昊,刘 愆 (西安近代化学研究所,陕西 西安 710065)
摘 要:以苯胺为原料,经重氮化、偶联、缩合环化等反应合成3,5-二氨基-4-苯偶氮基吡唑,采用红外光谱、核磁共振光谱、元素分析鉴定了结构;通过调节偶联反应体系的酸碱度,确定了适宜pH为5,收率88%;对缩合环化反应条件进行了研究,确定了适宜反应时间为4 h,反应温度为78℃,收率84.2%。
关键词:3,5-二氨基-4-苯偶氮基吡唑;偶联反应;缩合环化
中图分类号:TQ252  文献标识码:A  文章编号:1009-9212(2007)04- 0039-02
Synthesis and Characterization of 3,5-Diamino-4-phenylazo-1H-pyrazole
WANG Ying-lei,ZHANG Zhi-zhong,WANG Bo-zhou,ZHANG Hai-hao,LIU Qian (Xi'an Modern Chemistry Research Institute,Xi'an 710065,China)
Abstract:Taking aniline as primary substance,3,5-diamino-4-phenylazo-1H-pyrazole was synthesized via diazotization,coupling and circling reaction. The structures were confirmed by IR,1H NMR and elemental analysis. By adjusting pH of coupling reaction,the optimal pH was selected as 5,and the yield was 88%. Through an investigation of condensation cyclization the conditions,the optimal reaction time and temperature was considered to be 4 h and 78℃ respectively,and the yield was 84.2%.
Key words:3,5-diamino-4-phenylazo-1H-pyrazole;coupling reaction;condensation cyclization
基金项目:兵器预研支撑基金项目(40406020302)。
作者简介:汪营磊(1983-),男,河南郑州人,硕士研究生,从事有机合成研究。(Email:wangyinglei111@163.com)
收稿日期:2007-05-22
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