摘要：Menadione was prepared from itaconic acid according to the reaction scheme described in the text. The direct oxidation of 2-methyl-1-tetralone to menadione (method A) appeared to be more convenient than that described by Sah3) in view of avoiding the processes of the tetralone derivative to 2-methylnaphthalene. Method B was a little tedious but gave a good yield in each process. From these experiments, it could be concluded that itaconic acid is valuable as the staring material for the preparation of menadione.
