The synthetic process of 2-acetyl-3-methylquinoxaline-1,4-dioxide was studied,which was synthesized in over all yield of 86% by the oxidation of o-nitro-aniline and Beirut reaction of benzofuraxan and acetylacetone.

The resolution was 4 for the separation of the most difficult isomers such as o-toluidine and p-toluidine.

Indole has been prepared by the reaction of O-toluidine and formic acid to obtain N-formacyl-O-toluidine(O-toluidide),then in the presence of potassium hydroxide by toluone and O-toluidine used as water carrying reagent and solvent converted furter into potassium salt of O-toluidide,followed cyclization and hydrolysis.

Synthesize saframine O using o-toluidine as primer reactant by diazotization, coupling reaction, reduction reaction, and oxidation.

In the presence of urushibara nickel catalyst, o-phenylenediamine was prepared by catalytic hydrogenation of o-nitroaniline at ambient pressure and 45℃.

In this paper,the one-pot reaction of aqueous titanium trichloride with o-nitroaniline and 1,2-diketone compounds in basic media was studied.

Using o-nitroaniline as the starting material, benzimidazoles were prepared by the way of one-pot synthesis in the system of SnCl2·2H2O/KI/HCl at the temperature of 100 ℃.

Cooperative effect of inhibiting H2 evolution for stannate and O-aminophenol on Al anode;

The effect of inhibiting H_2-evolution for O-aminophenol on Al-alloy anode in 4 mol/L KOH was studied by galvanostatic gathering volumes of hydrogen evolution and stable state polarization curves and electrochemical impedance spectrum.