▎ 摘 要
NOVELTY - Preparation of 3-nitrophthalic acid involves adding 2,3-dimethyl nitrobenzene, water, and catalyst to a high-pressure reactor, introducing oxygen, and reacting under certain reaction pressure and reaction temperature. USE - Preparation of 3-nitrophthalic acid for use in synthesis of pharmaceutical intermediates. ADVANTAGE - The method provides 3-nitrophthalic acid having high selectivity under mild reaction conditions, by simple process.