2-硝基-4′-二甲氨基偶氮苯的合成及性质研究

doi:10.16039/j.cnki.cn22-1249.2019.05.004

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摘要

以邻硝基苯胺为原料，与重氮盐反应制得中间体邻硝基苯基重氮盐，进一步与N，N-二甲基苯胺偶合合成偶氮化合物，2-硝基-4′-二甲氨基偶氮苯(化合物1)。我们考察了pH值、化学计量比和温度等反应条件对合成的影响，用红外光谱表征其结构，并通过紫外光谱对化合物的酸碱变色性及光谱性质进行了研究。实验结果表明化合物1具有较大的摩尔吸光系数(ε= 2.42 × 10⁴ L/mol·cm)，良好的酸碱变色性。

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	任红
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关键词: 邻硝基苯胺 2-硝基-4′-二甲氨基偶氮苯重氮偶合紫外光谱

Abstract:

The intermediate o-nitrophenyl diazo salt was synthesized from o-nitroaniline and diazo salt. The compound 1, 2-nitro-4'-dimethylaminoazobenzene was further prepared by coupling diazo salt with N, N-dimethylaniline. The effects of reaction conditions such as pH value, stoichiometric ratio and temperature on the synthesis were investigated. The structure of the compound was characterized by infrared spectroscopy. The acid-base discoloration and spectrum properties of 1 were studied by ultraviolet spectroscopy. The experimental results show that 1 has high molar absorptivity (ε=2.42*10⁴L/mol.cm) and good acid-base discoloration.

Key words: O-nitroaniline 2-Nitro-4'-Dimethylaminoazobenzene Diazo Coupling Ultraviolet Spectra

出版日期: 2019-05-25 发布日期: 2019-05-25 整期出版日期: 2019-05-25

O636.1

引用本文:

任红, 吴平, 唐佳琪. 2-硝基-4′-二甲氨基偶氮苯的合成及性质研究 [J]. 吉林化工学院学报, 2019, 36(5): 16-18.
REN Hong, WU Ping, TANG Jiaqi. Synthesis and Properties of 2-Nitro-4'-Dimethylaminoazobenzene . Journal of Jilin Institute of Chemical Technology, 2019, 36(5): 16-18.

链接本文:

https://xuebao.jlict.edu.cn/CN/10.16039/j.cnki.cn22-1249.2019.05.004 或 https://xuebao.jlict.edu.cn/CN/Y2019/V36/I5/16

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[2]	吴平, 任红, 芦菲, 魏庆玲. 新型偶氮苯化合物对Zn(II)离子的感应研究 [J]. 吉林化工学院学报, 2018, 35(9): 8-10.
[3]	吴平, 任红, 史晋宜, 魏庆玲, 芦菲. 两个偶氮苯化合物的合成及紫外光谱研究 [J]. 吉林化工学院学报, 2018, 35(11): 1-3.

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