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有机化学
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有机化学 ›› 2000, Vol. 20 ›› Issue (4): 570-573. 上一篇    下一篇

研究论文

皂土催化剂上芳烃的硝酸酯硝化反应的区域选择性研究

彭新华;吕春绪   

  1. 南京理工大学化学系.南京(210014)
  • 发布日期:2000-08-25

Regioselectivity of aromatic nitration (with alkyl nitrates) in the presence of acid-treated bentonite catalysts

Peng Xinhua;Lu Chunxu   

  1. Nanjing Univ Sci & Technol, Dept Chem.Nanjing(210014)
  • Published:2000-08-25

PDF

578

被引次数

32

研究了酸性皂土催化剂上硝酸烷基酯硝化芳烃烷基苯方法的区域选择性。反应具有强对位选择性硝化能力，如甲苯的硝酸正丙酯硝化，产物邻对比例可达到0.58，较硝硫混酸的1.67显著降低。催化剂可循环使用。催化特性通过化学分析、FTIR、XRD和ESCA讨论。该方法在合成硝基芳烃化合物领域具有环境和经济双重意义。

关键词: 皂土, 芳烃, 硝酸酯, 选择性, 付里叶变换, 红外分光光度法, Ｘ射线衍射分析

REgioselectivities of alkylbenzenes nitration were investigated in the presence of acid-treated bentonite catalysts by using alkyl nitrates. The reaction was highly para-selective. Ortho-to-para ratio was below 0.58 in the nitration products of toluene with n-propyl nitrate instead of 1.67, as compared with sulfonitric acid. Catalyst can be recycled. Catalytic characteristics were discussed by chemical analysis, FTIR, XRD and ESCA. The process is enviro-economics and represents an attractive method for the clean synthesis of a range of nitro aromatic compounds.

Key words: TFOL, ARENE, NITRATE, SELECTIVITY, FOURIER TRANSFORM, INFRARED SPECTROPHOTOMETRY, X-RAY DIFFRACTION ANALYSIS

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