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【结 构 式】

【分子编号】38408

【品名】ethyl 4-[[(2-imino-2H-chromen-3-yl)carbonyl]amino]benzoate

【CA登记号】

【 分 子 式 】C19H16N2O4

【 分 子 量 】336.34712

【元素组成】C 67.85% H 4.79% N 8.33% O 19.03%

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:(III)

The cyclization of 2-hydroxybenzaldehyde (I) with 4-(cyanacetamido)benzoic acid ethyl ester (II) catalyzed by piperidine in ethanol gives the 2-imino-1-benzopyran (III), which is then hydrolyzed to the target benzopyranone with HCl in refluxing ethanol/water.

1 Vasylyev, M.V.; Bilokin, Y.V.; Bylov, I.E.; Synthesis and antiinflammatory activity of N-substituted 2-oxo-2H-1-benzopyran-3-carboxamides and their 2-iminoanalagues. Eur J Med Chem 1999, 34, 11, 997.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 21351 2-Hydroxybenzaldehyde;Salicylic aldehyde;2-Formylphenol;salicylaldehyde 90-02-8 C7H6O2 详情 详情
(II) 38407 ethyl 4-[(2-cyanoacetyl)amino]benzoate C12H12N2O3 详情 详情
(III) 38408 ethyl 4-[[(2-imino-2H-chromen-3-yl)carbonyl]amino]benzoate C19H16N2O4 详情 详情
Extended Information