Mamchur A. Investigation of naphthalene oxidation reaction and its derivatives by ozon in the liquid phase.

Having learned the processes of naphthalene ozonization and its derivatives in the solution of acetic acid, it was proved that the reaction proceeded mainly on double bonds of the same aromatic system destruction products, namely, peroxy compounds. In the process of ozonization of naphthalene and 2-methylnaphthalene the corresponding quinones and 2-naphthoic acid were produced for the first time. It has been shown that adding a methyl group to an aromatic ring of naphthalene activates a molecule in the reaction with ozone, besides, effective rate constant increases twice. Adding cobalt diacetate even in small quantities into the system of 2-methylnaphthalene-ozone-acetic acid prevents from aromatic ring ozonlysis, and only the admixture of alkali metal bromides enables to direct the reation to methyl group oxidation forming 2-naphthoic acid. Using twostage oxidation by ozonized chrome and marganese compounds help to get finished products in the form of 2-methyl-1,4-naphthoquinone and 5-hudroxy-1,4-naphthoquinone with high output.