1H-imidazole-4-carboxylic acid -Drug Synthesis Database

【结构式】

【分子编号】37426

【品名】1H-imidazole-4-carboxylic acid

【CA登记号】

【分子式】C₄H₄N₂O₂

【分子量】112.08804

【元素组成】C 42.86% H 3.6% N 24.99% O 28.55%

与该中间体有关的原料药合成路线共 1 条

合成路线1

该中间体在本合成路线中的序号：(IV)

The hydrolysis of diethyl imidazole-4,5-dicarboxylate (I) with aqueous NaOH gives imidazole-4,5-dicarboxylic acid (II), which is partially decarboxylated by treatment with refluxing aniline yielding 4-anilinocarbonylimidazole (III). The hydrolysis of (III) with refluxing aqueous HCl affords imidazole-4-carboxylic acid (IV), which is finally esterified with ethanol and dry HCl at reflux temperature.

参考文献中间体

合成目标

【1】 Schen, T.-T.; et al.; US 3438992 .
【2】 Serradell, M.N.; Blancafort, P.; Hillier, K.; Castaner, J.; C-751. Drugs Fut 1981, 6, 4, 218.

中间体序号	中间体编号	品名	CAS号	分子式	供应商	用于合成
(A)	12294	Aniline; Phenylamine	62-53-3	C₆H₇N	详情	详情
(I)	37424	diethyl 1H-imidazole-4,5-dicarboxylate		C₉H₁₂N₂O₄	详情	详情
(II)	31951	1H-imidazole-4,5-dicarboxylic acid	570-22-9	C₅H₄N₂O₄	详情	详情
(III)	37425	N-phenyl-1H-imidazole-4-carboxamide		C₁₀H₉N₃O	详情	详情
(IV)	37426	1H-imidazole-4-carboxylic acid		C₄H₄N₂O₂	详情	详情

Extended Information