METHOD FOR PRODUCING 2-METHYL-1,4-NAPHTHOQUINONE

摘要

The invention relates to a method for producing 2-methyl-1,4-naphthoquinone by the oxidation of 2-methylnaphthalene. 2-methyl-1,4-naphthoquinone, also known as menandione or vitamin K3, is used in the field of animal nutrition as a food supplement and is thus produced in large quantities. To facilitate large-scale production, the oxidation of the 2-methylnaphthalene takes place without a metallic catalyst, using hydrogen peroxide in carboxylic acids, their respective anhydride and a strong mineral acid as a catalyst for the formation of the percarboxylic acid in a thermal treatment process.