1. Reaction mechanism of liquid phase autoxidation of O - nitrotoluene under strong base is investigated in this paper.

2. In this paper, ortho nitrobenzaldehyde is prepared with indirect oxo- process for o nitrotoluene.

3. A new process was developed to synthesize 2 nitrobenzyl alcohol from 2 nitrotoluene by catalytic bromination.

4. The HPLC methods for seperation and determination of isomers of nitrotoluene and nitrobenzoic acid were studied.

5. The results showed that the purity of 6 chloro 2 nitrotoluene was over 96% by two tower distillation.

6. The HPLC methods for seperation and determination of isomers of nitrotoluene and nitrobenzoic acid were studied. Various factors related to the experiment were discussed and complared.

7. Such esters, or mixtures thereof may also be modified by as nitrobenzene, nitrotoluene, dinitrotoluene or trinitrololuene.

8. The experiment results show that A 1 is a good PTC for synthesis of ONBA with O nitrotoluene by oxidation of potassium permanganate.