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【结 构 式】

【分子编号】50426

【品名】5-([[tert-butyl(dimethyl)silyl]oxy]methyl)-3-(3,4-dichlorophenyl)-3-(phenylselanyl)dihydro-2(3H)-furanone

【CA登记号】

【 分 子 式 】C23H28Cl2O3SeSi

【 分 子 量 】530.42442

【元素组成】C 52.08% H 5.32% Cl 13.37% O 9.05% Se 14.89% Si 5.29%

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)

The esterification of 3,4-dichlorophenylacetic acid (I) with methanol and ClH gives the methyl ester (II), which is alkylated with allyl bromide and LDA in THF to yield 2-(3,4-dichlorophenyl)-4-pentenoic acid methyl ester (IV). The hydrolysis of (IV) with LiOH in MeOH/water affords the corresponding free acid (V), which is epoxidated with MCPBA in refluxing chloroform to provide epoxide (VI), which, without isolation, is treated in acid medium, giving the tetrahydrofuranone (VII). The silylation of the OH group of (VII) with Tbdms-Cl and imidazole in DMF yields the protected silyl ether (VIII), which is treated with LDA in THF to afford the lithium enolate (IX). The reaction of (IX) with phenylselenyl chloride in THF provides the phenylselenyl derivative (X), which is oxidized with MCPBA to the corresponding selenoxide. This nonisolated compound undergoes spontaneous syn elimination to give, after hydrolysis of the silyl ether with AcOH, 3-(3,4-dichlorophenyl)-5-(hydroxymethyl)furan-2(5H)-one (XI). Finally, this compound is esterified with pivaloyl chloride and pyridine in dichloromethane to afford the target ester.

1 Pour, M.; et al.; 3-Phenyl-5-acyloxymethyl-2H,5H-furan-2-ones: Synthesis and biological activity of a novel group of potential antifungal drugs. J Med Chem 2001, 44, 17, 2701.
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) 30414 2-(3,4-dichlorophenyl)acetic acid;2-(3,4-Dichlorophenyl)acetic acid 5807-30-7 C8H6Cl2O2 详情 详情
(II) 47947 methyl 2-(3,4-dichlorophenyl)acetate C9H8Cl2O2 详情 详情
(III) 11463 3-Bromo-1-propene; 3-Bromopropene;allyl bromide 106-95-6 C3H5Br 详情 详情
(IV) 50420 methyl 2-(3,4-dichlorophenyl)-4-pentenoate C12H12Cl2O2 详情 详情
(V) 50421 2-(3,4-dichlorophenyl)-4-pentenoic acid C11H10Cl2O2 详情 详情
(VI) 50422 2-(3,4-dichlorophenyl)-3-(2-oxiranyl)propionic acid C11H10Cl2O3 详情 详情
(VII) 50423 3-(3,4-dichlorophenyl)-5-(hydroxymethyl)dihydro-2(3H)-furanone C11H10Cl2O3 详情 详情
(VIII) 50424 5-([[tert-butyl(dimethyl)silyl]oxy]methyl)-3-(3,4-dichlorophenyl)dihydro-2(3H)-furanone C17H24Cl2O3Si 详情 详情
(IX) 50425   C17H23Cl2LiO3Si 详情 详情
(X) 50426 5-([[tert-butyl(dimethyl)silyl]oxy]methyl)-3-(3,4-dichlorophenyl)-3-(phenylselanyl)dihydro-2(3H)-furanone C23H28Cl2O3SeSi 详情 详情
(XI) 50427 3-(3,4-dichlorophenyl)-5-(hydroxymethyl)-2(5H)-furanone C11H8Cl2O3 详情 详情
(XII) 44281 pivalic acid 75-98-9 C5H10O2 详情 详情
Extended Information