Abstract
The oxidation of 2-methylnaphthalene was carried out in acetic acid with aqueous hydrogen peroxide. 2-Methyl-1,4-naphthoquinone was obtained in a selectivity of nearly ≥90% at 100 °C for 3 h. The reaction has been studied by varying different parameters like concentration of hydrogen peroxide, strength of acetic acid, molar ratio of 2-methylnaphthalene to hydrogen peroxide, reaction temperature and time. Compared to the conventional preparation of Vitamin K 3, this method could be economical and ecofriendly as the use of mineral acid and chromium salts are avoided.
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