3,4-dihydroxybenzoic acid is a kind of phenolic acid which is widely used in the fields of medicine and chemical industry, mainly as important pharmaceutical intermediates and chemical raw materials. At present, 3,4-dihydroxybenzoic acid is in great demand in the international market.
It is understood that 3,4-dihydroxybenzoic acid, as a medical intermediate, has a variety of biological activities, can play a nerve protection, pain relief, anti-inflammatory, antibacterial, antioxidant, anti-tumor and other functions. If we want to get 3,4-dihydroxybenzoic acid with high yield and high purity, we can use vanillin as raw material, get 4 hydroxyl 3 methoxy benzoic acid under the action of organic solvent and oxidation catalyst, and then use 4 hydroxyl 3 methoxy benzoic acid demethylation reagent to remove methyl, 3,4-dihydroxybenzoic acid is obtained, which is a low-cost process for producing 3,4-dihydroxybenzoic acid and can also be used in industrial production.
