Catalytic hydrogenolysis, effective for the synthesis of 2-aminoimidazoles from 2-(arylazo) imidazoles, cannot be used to prepare 2-amino-4fluoroimidazolee because the fluorine atom is lost simultaneously; formamidinesulfinic acid, however, achieves the required conversion in good yield. Ethyl 2, 4d~ uoroimidazole-5-carboxylate is obtained by photolysis of ethyl 2-diazonio-4-fluoroimidazole-5-carboxylate in fluoroboric acid. The ester is ...
![[5-fluoro-3-(methoxymethyl)imidazol-4-yl]methanol结构式](https://image.chemsrc.com/caspic/456/89676-66-4.png)
![2-[(4-bromophenyl)hydrazinylidene]-5-fluoroimidazole-4-carboxamide结构式](https://image.chemsrc.com/caspic/156/89676-61-9.png)
