中文摘要：

以5%Pd/C为催化剂,芳香族硝基化合物在温和条件（30℃,H2/0.1 MPa）下还原成芳胺。研究了芳环上的取代基对催化加氢反应的影响。结果表明：对位取代的芳硝基化合物的加氢反应速率为：H〉CH3〉CO2CH3〉CF3〉F〉OCH3;间位取代芳硝基化合物加氢反应速率为：H〉CH3〉CF3〉F〉CO2CH3〉OCH3〉CN;邻位取代芳硝基化合物加氢反应速率为：H〉CF3〉CH3〉OCH3〉F〉CO2CH3〉CN。

英文摘要：

A series of aromatic amines compounds were synthesized by catalytic hydrogenation, using aromatic nitro-compound as the materials and 5% Pd/C as the catalyst under mild conditions（30 ℃, H2/0.1 MPa）. The effects of substituents of aromatic nitro compounds on the hydrogenation reactivities were investigated. The results showed that the type and position of substituents had a considerable effect on hydrogenation reaction. Hydrogenation rates of para-substituted nitrobenzenes were compared and the following order were observed： H 〉 CH3 〉 CO2CH3 〉 CF3 〉 F 〉 OCH3. The reaction rate of meta-substituted nitrobenzenes decreased in the following order： H 〉 CH3 〉 CF3 〉 F 〉 CO2CI-I3 〉 OCH3 〉 CN. The reaction rate of ortho-substituted nitrobenzenes decreased in the following order： H 〉 CF3 〉 CH3 〉 OCH3 〉 F 〉 CO2CH3 〉 CN.