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【结 构 式】

【分子编号】30313

【品名】2-methyl-2-[4-[(2-methyl-2-propenyl)amino]phenyl]malonic acid

【CA登记号】

【 分 子 式 】C14H17NO4

【 分 子 量 】263.29332

【元素组成】C 63.87% H 6.51% N 5.32% O 24.31%

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:(XIII)

The malonic synthesis of 4-nitrochlorobenzene (VIII) with sodium diethyl methylmalonate (IX) (prepared with the corresponding malonic ester and NaH) in hot DMF gives diethyl (4-nitrophenyl)methylmalonate (X), which is reduced with H2 over Pd/C as before yielding diethyl (4-aminophenyl)methylmalonate (XI). The alkylation of (XI) with (VI) by means of NaHCO3 in refluxing ethanol affords diethyl [4-(2-methylallyl)aminophenyl]methylmalonate (XII), which is treated with sodium ethoxide in refluxing ethanol to yield ethyl 2-(4-[2-methylallylamino)phenyl]propionate (XIV). Finally, this compound is hydrolyzed with NaOH in refluxing ethanol. Partial hydrolysis of (XII) with NaOH in refluxing ethanol gives 2-[4-(2-methylallylamino)phenyl]methylmalonic acid (XIII), which is finally decarboxylated by treatment with refluxing aqueous HCl. The simultaneous hydrolysis and decarboxylation of (XII) with NaOH in refluxing ethanol also gives the title product.

1 Dumaitre, B.; et al.; Synthesis of some analgesic and antiinflammatory 4-aminophenylacetic and 4-aminophenylacetic and 2-(4-aminophenyl)propionic acid derivatives. Eur J Med Chem - Chim Ther 1979, 14, 3, 207-214.
2 Serradell, M.N.; Castaner, J.; Alminoprofen. Drugs Fut 1984, 9, 3, 165.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(VI) 12127 3-Chloro-2-methyl-1-propene; Isobutenyl chloride 563-47-3 C4H7Cl 详情 详情
(VIII) 13909 1-Chloro-4-nitrobenzene; p-Nitrochlorobenzene 100-00-5 C6H4ClNO2 详情 详情
(IX) 30310 diethyl 2-methylmalonate 609-08-5 C8H14O4 详情 详情
(X) 13910 diethyl 2-methyl-2-(4-nitrophenyl)malonate C14H17NO6 详情 详情
(XI) 30311 diethyl 2-(4-aminophenyl)-2-methylmalonate C14H19NO4 详情 详情
(XII) 30312 diethyl 2-methyl-2-[4-[(2-methyl-2-propenyl)amino]phenyl]malonate C18H25NO4 详情 详情
(XIII) 30313 2-methyl-2-[4-[(2-methyl-2-propenyl)amino]phenyl]malonic acid C14H17NO4 详情 详情
(XIV) 30314 ethyl 2-[4-[(2-methyl-2-propenyl)amino]phenyl]propanoate C15H21NO2 详情 详情
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