NaOH对氧气液相氧化硝基甲苯助催化作用的研究

研究了在甲醇溶剂中强碱ＮａｏＨ对氧气液相氧化邻，间，对硝基甲苯制取邻，间，对硝基苯甲酸的助催化作用。，发现ＮａＯＨ对氧气氧化邻，对硝基甲苯有明显的助催化作用，且碱的助催化作用随着ＮａＯＨ浓度的增加而增加；而对氧气氧化间硝在甲苯则没有助催化作用。通过对反应机理的研究，发现碱的助催化作用是从邻，对硝基甲苯中夺去了一个质子使形形成邻，对硝基苯甲基阴离子。

Study of cocatalytic action of NaOH for oxidation of nitrotoluene in liquid phase

? Cocatalytic action of NaOH on the oxidation of o , m , p nitrotoluenes to o , m , p nitrobenzoic acids with dioxygen in methanol solvent is investigated. It is found that NaOH exhibited significant cocatalytic action on the oxidation of o and p nitrotoluenes and had no cocatalytic action on the oxidation of m nitrotoluene, and the cocatalytic action of alkali NaOH increased as the concentrations of NaOH increased. The cocatalytic action of NaOH is to withdraw a proton from o and p nitrotoluenes and to make them form o and p nitrobenzyl anions by studying reaction mechanism.