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【结 构 式】 
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【分子编号】37585 【品名】3-chloro-2-pentanone 【CA登记号】 |
【 分 子 式 】C5H9ClO 【 分 子 量 】120.57856 【元素组成】C 49.81% H 7.52% Cl 29.4% O 13.27% |
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：(I)This compound can be prepared in two different ways: 1) The condensation of 3-chloro-2-pentanone (I) with 2-fluoroanisole (II) by means of concentrated H2SO4 and subsequent heating at 240 C gives 2,3-bis(3-fluoro-4-methoxyphenyl)-2-pentene (III), which is reduced with H2 over Pd/C in anhydrous AcOH to afford 2,3-bis(3-fluoro-4-methoxyphenyl)pentane (IV). Finally, this compound is demethylated by treatment with refluxing aqueous HBr. 2) The Friedel-Kraft's condensation of (II) with 3-chloro-2-pentanol by means of AlCl3 also gives (IV).
| 【1】 Turner, J.C.; Chan, R.P.-K.; US 4051263 . |
| 【2】 Castaner, J.; Hopkins, S.J.; Bifluranol. Drugs Fut 1981, 6, 9, 531. |
| 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) | 37585 | 3-chloro-2-pentanone | C5H9ClO | 详情 | 详情 | |
| (II) | 37586 | 2-fluoroanisole; 1-fluoro-2-methoxybenzene; 2-fluorophenyl methyl ether | 321-28-8 | C7H7FO | 详情 | 详情 |
| (III) | 37587 | 4-[(E)-1-ethyl-2-(3-fluoro-4-methoxyphenyl)-1-propenyl]-2-fluorophenyl methyl ether; 4-[(E)-1-ethyl-2-(3-fluoro-4-methoxyphenyl)-1-propenyl]-2-fluoro-1-methoxybenzene | C19H20F2O2 | 详情 | 详情 | |
| (IV) | 37588 | 4-[1-ethyl-2-(3-fluoro-4-methoxyphenyl)propyl]-2-fluorophenyl methyl ether; 4-[1-ethyl-2-(3-fluoro-4-methoxyphenyl)propyl]-2-fluoro-1-methoxybenzene | C19H22F2O2 | 详情 | 详情 | |
| (V) | 37589 | 3-chloro-2-pentanol | C5H11ClO | 详情 | 详情 |
Extended Information