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【结 构 式】

【分子编号】49030

【品名】N-(4-methoxy-2-methyl-6-quinolinyl)acetamide

【CA登记号】

【 分 子 式 】C13H14N2O2

【 分 子 量 】230.26644

【元素组成】C 67.81% H 6.13% N 12.17% O 13.9%

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:(X)

Bromination of methyl toluate (I) with N-bromosuccinimide and benzoyl peroxide (Bz2O2) in refluxing CCl4 gives alpha-bromo-o-toluate (II), which is coupled with phenolic derivative (III) by means of K2CO3 in DMF to provide phenoxy derivative (IV). Saponification of the methyl ester group of (IV) by treatment with KOH in refluxing EtOH affords carboxylic acid (V), which is then converted into the desired compound via the corresponding acid chloride obtained by reaction with oxalyl chloride in CHCl3, followed by coupling with 4,6-diamino-2-methylquinoline (XII) by means of pyridine. Quinoline (XII) can be obtained as follows: Condensation of 4-aminoacetanilide (VII) with methyl acetoacetate (VIII) by heating in MeOH affords crotonate (IX), which is then subjected to cyclization in refluxing Dowtherm A to provide hydroxy quinoline (X). Methylation of (X) with dimethyl sulfate in refluxing toluene gives methoxy quinoline (XI), whose methoxy group is converted into an amino group with ammonium acetate and whose acetyl group is finally removed by hydrolysis with HCl.

1 Kitao, Y.; Shinkai, H.; Ito, T.; Uchida, I.; Yamada, H.; Iida, T.; 4-Aminoquinolones: Novel nociceptin antagonists with analgesics activity. J Med Chem 2000, 43, 24, 4667.
2 Shinkai, H.; Yamada, H.; to, T. (Japan Tobacco Inc.); Amide derivs. and nociceptin antagonists. EP 1072263; JP 1999335355; WO 9948492 .
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) 49024 2-Methyl Methylbenzoate; 2-Methylbenzoic acid methyl ester; Methyl o-toluate; o-Toluic acid methyl ester 89-71-4 C9H10O2 详情 详情
(II) 28575 methyl 2-(bromomethyl)benzoate C9H9BrO2 详情 详情
(III) 49025 p-Ethylphenol; 4-Ethylphenol 123-07-9 C8H10O 详情 详情
(IV) 49026 methyl 2-[(4-ethylphenoxy)methyl]benzoate C17H18O3 详情 详情
(V) 49027 2-[(4-ethylphenoxy)methyl]benzoic acid C16H16O3 详情 详情
(VI) 29016 N-(4-aminophenyl)acetamide 122-80-5 C8H10N2O 详情 详情
(VII) 11791 methyl 3-oxobutanoate; Methyl acetoacetate 105-45-3 C5H8O3 详情 详情
(VIII) 49028 methyl (Z)-3-[4-(acetamido)anilino]-2-butenoate C13H16N2O3 详情 详情
(IX) 49029 N-(4-hydroxy-2-methyl-6-quinolinyl)acetamide C12H12N2O2 详情 详情
(X) 49030 N-(4-methoxy-2-methyl-6-quinolinyl)acetamide C13H14N2O2 详情 详情
(XI) 49031 4-amino-2-methyl-6-quinolinylamine; 2-methyl-4,6-quinolinediamine C10H11N3 详情 详情
Extended Information