Employing four steps of reaction with bromination, methoxylation, methylation, and oxidation, we have synthesized 3,4,5 trimethoxy benzoic acid from 4 hydroxybenzaldehyde.

• 以对羟基苯甲醛为原料,以溴代、甲氧基化、甲基化、氧化四步合成了3,4,5三甲氧基苯甲酸。