Zhuo‐An Zhao
2002
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Journal
Fine chemicals
Abstract
3,4-Methylenedioxyphenol(Ⅰ)was prepared from 3,4 methylenedioxyacetophenone(Ⅱ)by oxidation with acetylhydroperoxide and hydrolysis.Effects of reaction conditions on yield and quality of the product were investigated. The optimum conditions of oxidation were n (CH 3COOH)∶ n (Ⅱ)=(1 05-1 15)∶1,reaction temperature 20-30 ℃ and reaction time 4 h.The crude acetic ester of Ⅰ was directly hydrolyzed with w (NaOH)=5% aqueous solution at room temperature for 4 h to give pure Ⅰ in 87 7% yield.