水中氢氧化氧铁催化水合肼还原芳香族硝基化合物  

Reduction of Aromatic Nitro Compounds with Hydrazine Hydrate Catalyzed by Iron Oxide Hydroxide in Water

作　　者：蔡可迎[1] 魏贤勇[2] 

机构地区：[1]徐州教育学院化学系,江苏徐州221006 [2]中国矿业大学化工学院,江苏徐州221008

出　　处：《河北师范大学学报（自然科学版）》2007年第5期633-635,共3页Journal of Hebei Normal University：Natural Science

基　　金：江苏省高新技术产业发展项目(JHB05-33)

摘　　要：以NaOH溶液快速沉淀FeCl3溶液制备了催化剂FeO(OH).在水中用FeO(OH)催化水合肼还原芳香族硝基化合物得到芳胺.以邻硝基甲苯为底物,考察了水合肼用量、催化剂FeO(OH)用量和反应时间对邻甲基苯胺收率的影响.较优的反应条件是:n(水合肼)∶n(邻硝基甲苯)=2∶1,邻硝基甲苯4.11 g(30 mmol),FeO(OH)0.45g,反应50 min,反应温度80℃,溶剂为15 mL水.在此条件下邻甲基苯胺的收率达到98%.In water,a few of aromatic nitro compounds have been reduced in good yield to the corresponding anilines with hydrazine hydrate in the presence of an iron oxide hydroxide catalyst prepared by rapid precipitation from solution of iron（ Ⅲ ） chloride with sodium hydroxide. The effect of various factors in the process of reduction of o-nitrotoluene is investigated. The results show that under the conditions of n （hydrazine hydrate） ： n （o- nitrotoluene） =2：1, the quantity of o-nitrotoluene 4.11 g（30 mmol）, the quanitity of catalyst FeO（OH） 0.45 g, the reaction time for 1.0 h, the temperature of 80 ℃ and 15 mL water as solvent, the yield is 98 %.

关 键 词：芳香族硝基化合物 水合肼 还原 氢氧化氧铁 

分 类 号：O625.61[理学—有机化学]