IMIDAZOLE-ALDOXIME COMPOUND AND SYNTHESIS THEREOF

摘要

NEW MATERIAL:An imidazole-aldoxime compound expressed by formula I (R2 is H, methyl, ethyl, undecyl, heptadecyl or phenyl; R4 is H or methyl). EXAMPLE:Imidazole-4-aldoxime. USE:An intermediate for various imidazole compounds having important meaning in the field of biochemistry or medicines, e.g. DL-histidine or cimetidine R useful as a remedy for nervous gastric ulcer, etc., or reagent for research. PREPARATION:Hydroxylamine hydrochloride in an amount of =1.5mol and sodium acetate in an amount of =1.5mol are added to 1mol compound expressed by formula II and refluxed while heating in an acetic acid solution to afford the aimed compound expressed by formula I. The resultant compound expressed by formula I is capable of reacting with an aqueous solution of a mineral acid to readily give a formyl-imidazole compound, which is then oxidized with a peracid to provide various imidazole-carboxylic acids useful for biochemistry.