| 摘要 |
PROBLEM TO BE SOLVED: To produce benzaldehydes and/or benzoic acids with a good production efficiency while suppressing side reactions without using a catalyst having great corrosiveness. SOLUTION: This method for producing an aromatic compound comprises (A) an oxidation step for bringing toluenes which may have a substituent group in the benzene ring into contact with molecular oxygen in the presence of an N-substituted cyclic imide-based catalyst and oxidizing the toluenes, (B) a first extraction step for adding water to the reactional mixture and carrying out the extraction, (C) a first neutralizing step for adding an aqueous solution of an alkali to an organic layer obtained in the first extraction step, neutralizing the organic layer and separating the liquids and (D) at least one step selected from (D1) a benzaldehydes recovering step for recovering the benzaldehydes produced from the organic layer prepared in the first neutralizing step by the reaction and (D2) a benzoic acids recovering step for adding an acid to the aqueous layer obtained by the first neutralizing step, acidifying the aqueous layer and recovering the benzoic acids produced by the reaction.
|
