光催化水还原4-氯硝基苯制备4,4′-二氯氧化偶氮苯  

Photocatalytic Reduction of 4-Chloronitrobenzene by Water to 4,4′-Dichloroazoxybenzene

作　　者：王海军 李明昊 仇铭 任运来 田欣哲 WANG Haijun;LI Minghao;QIU Ming;REN Yunlai;TIAN Xinzhe(Shaanxi University of Science and Technology,College of Bioresources Chemistry and Materials Engineering,Xi′an 710021,China;Henan Agricultural University,Faculty of Science,Zhengzhou 450002,China)

机构地区：[1]陕西科技大学轻工科学与工程学院,陕西西安710021 [2]河南农业大学理学院,河南郑州450002

出　　处：《河南科技大学学报（自然科学版）》2024年第1期98-104,M0008,共8页Journal of Henan University of Science And Technology:Natural Science

基　　金：国家自然科学基金项目(21002023)。

摘　　要：以便宜无毒的水为还原剂,实现了4-氯硝基苯的还原,发展了1种合成4,4′-二氯氧化偶氮苯的绿色方法。反应在光照和无催化剂条件下进行,避免了传统工艺中加热和污染性还原剂及催化剂的使用。研究了多种条件对反应的影响.结果表明:1,4-二氧六环是最佳溶剂;在光功率和波长分别为75 W和365 nm时,目标产物的产率最高,达到92%。Cheap and non-toxic water was,for the first time,used as the reducing agent to enable the reduction of 4-chloronitrobenzene,which provided a new and green method for the synthesis of 4,4′-dichloroazoxybenzene.Moreover,the reaction is carried out under light-free and catalyst-free conditions,avoiding the heating and the use of polluting reductants and catalysts in traditional processes.Effects of various conditions on the reaction were studied,and the results showed that 1,4-dioxane was the optimal solvent.When the optical power and wavelength were 75 W and 365 nm,respectively,the target product was obtained in the highest yield(92%).The results from isotope-labeling experiments suggested that water molecules were converted into pollution-free oxygen after playing their role as reductants.

关 键 词：光催化 4-氯硝基苯 4 4′-二氯氧化偶氮苯 还原 

分 类 号：O621[理学—有机化学]