| 摘要 |
Known processes for preparing 4-aminomethylbenzoic acid suffer from a variety of disadvantages, such as low yields and the use of starting materials which are not readily available. These problems are now overcome by preparing 4-aminomethylbenzoic acid or a salt thereof by catalytically hydrogenating 4-hydroxyiminomethyl- benzoic acid dispersed in an aqueous acidic or neutral medium in the presence of a catalyst of at least one of palladium and rhodium, and if desired converting a resulting salt to the free acid. |
