【结 构 式】 |
【分子编号】49692 【品名】Tetrahydrothiopyran-4-one; Tetrahydro-4H-thiopyran-4-one; 4-Oxothiane 【CA登记号】1072-72-6 |
【 分 子 式 】C5H8OS 【 分 子 量 】116.18392 【元素组成】C 51.69% H 6.94% O 13.77% S 27.6% |
合成路线1
该中间体在本合成路线中的序号:(V)The reaction of 3-fluoroaniline (I) with isobutyl chloroformate (II) by means of K2CO3 in dichloromethane/water gives the carbamate (III), which is brominated with 1,3-dibromo-5,5-dimethylhydantoin (DBDH) to yield the 4-bromo-3-fluorophenyl carbamate (IV). The condensation of (IV) with tetrahydrothiopyran-4-one (V) by means of EtMgBr and BuLi in THF affords the tertiary alcohol (VI), which is dehydrated by means of TFA in dichloromethane and oxidized with NaIO4 in methanol/water to provide the unsaturated sulfoxide (VII). The stereoselective reduction of (VII) by means of H2 over Pt/C in DMF gives the cis sulfoxide (VIII). The cyclization of the carbamate (VIII) with (S)-3-chloropropane-1,2-diol (IX) by means of Li t-amylate in DMF gives the oxazolidinone (X), whose free OH group is activated with 2,5-dichlorobenzenesulfonyl chloride (XI) and TEA in dichloromethane to yield the sulfonate (XII). The reaction of (XII) with NH4OH in methanol/acetonitrile affords the aminomethyl derivative (XIII), which is finally acylated with acetic anhydride (XIV) to provide the target sulfoxide.
【1】 Gage, J.R.; et al.; Stereodivergent synthesis of sulfoxide-containing oxazolidinone antibiotics. Tetrahedron Lett 2000, 41, 22, 4301. |
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) | 20697 | 3-fluoroaniline; 3-fluorophenylamine | 372-19-0 | C6H6FN | 详情 | 详情 |
(II) | 13423 | 1-[(Chlorocarbonyl)oxy]-2-methylpropane; Isobutyl chloroformate;isobutyl carbonochloridate | 543-27-1 | C5H9ClO2 | 详情 | 详情 |
(III) | 49690 | isobutyl 3-fluorophenylcarbamate | C11H14FNO2 | 详情 | 详情 | |
(IV) | 49691 | isobutyl 4-bromo-3-fluorophenylcarbamate | C11H13BrFNO2 | 详情 | 详情 | |
(V) | 49692 | Tetrahydrothiopyran-4-one; Tetrahydro-4H-thiopyran-4-one; 4-Oxothiane | 1072-72-6 | C5H8OS | 详情 | 详情 |
(VI) | 49693 | isobutyl 3-fluoro-4-(4-hydroxytetrahydro-2H-thiopyran-4-yl)phenylcarbamate | C16H22FNO3S | 详情 | 详情 | |
(VII) | 49694 | 4-[2-fluoro-4-[(isobutoxycarbonyl)amino]phenyl]-3,6-dihydro-2H-thiopyranium-1-olate | C16H20FNO3S | 详情 | 详情 | |
(VIII) | 49695 | 4-[2-fluoro-4-[(isobutoxycarbonyl)amino]phenyl]tetrahydro-2H-thiopyranium-1-olate | C16H22FNO3S | 详情 | 详情 | |
(IX) | 49696 | (S)-(+)-Alpha-Chlorohydrin; (S)-(+)-3-Chloro-1,2-propanediol; (S)-3-Chloro-1,2-propanediol | 60827-45-4 | C3H7ClO2 | 详情 | 详情 |
(X) | 49697 | 4-[2-fluoro-4-[(5R)-5-(hydroxymethyl)-2-oxo-1,3-oxazolidin-3-yl]phenyl]tetrahydro-2H-thiopyranium-1-olate | C15H18FNO4S | 详情 | 详情 | |
(XI) | 49698 | 2,5-Dichlorobenzenesulfonic acid | 88-42-6 | C6H4Cl2O3S | 详情 | 详情 |
(XII) | 49699 | 4-[4-[(5R)-5-([[(2,5-dichlorophenyl)sulfonyl]oxy]methyl)-2-oxo-1,3-oxazolidin-3-yl]-2-fluorophenyl]tetrahydro-2H-thiopyranium-1-olate | C21H20Cl2FNO6S2 | 详情 | 详情 | |
(XIII) | 49700 | 4-[4-[(5S)-5-(aminomethyl)-2-oxo-1,3-oxazolidin-3-yl]-2-fluorophenyl]tetrahydro-2H-thiopyranium-1-olate | C15H19FN2O3S | 详情 | 详情 | |
(XIV) | 49701 | Acetic anhydride; Acetyl oxide | 108-24-7 | C4H6O3 | 详情 | 详情 |
合成路线2
该中间体在本合成路线中的序号:(V)The reaction of 3-fluoroaniline (I) with isobutyl chloroformate (II) by means of K2CO3 in dichloromethane/water gives the carbamate (III), which is brominated with 1,3-dibromo-5,5-dimethylhydantoin (DBDH) to yield the 4-bromo-3-fluorophenyl carbamate (IV). The condensation of (IV) with tetrahydrothiopyran-4-one (V) by means of EtMgBr and BuLi in THF affords the tertiary alcohol (VI), which is dehydroxylated by means of poly(methylhydrosiloxane) (PMHS), (Me3Si)2O and Ts-OH in toluene to provide the intermediate (VII). The stereoselective oxidation of (VII) to the trans sulfoxide (VIII) is performed by means of Ti(OiPr)4 and tert-butyl hydroperoxide in the presence of diisopropyl D-tartrate. The cyclization of the carbamate (VIII) with (S)-3-chloropropane-1,2-diol (IX) by means of Li t-amylate in DMF gives the oxazolidinone (X), whose free OH group is activated with 3-nitrobenzenesulfonyl chloride and TEA in dichloromethane to yield the sulfonate (XII). The reaction of (XII) with NH4OH in methanol/acetonitrile affords the aminomethyl derivative (XIII), which is finally acylated with propionic anhydride (XIV) to provide the target sulfoxide.
【1】 Gage, J.R.; et al.; Stereodivergent synthesis of sulfoxide-containing oxazolidinone antibiotics. Tetrahedron Lett 2000, 41, 22, 4301. |
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) | 20697 | 3-fluoroaniline; 3-fluorophenylamine | 372-19-0 | C6H6FN | 详情 | 详情 |
(II) | 13423 | 1-[(Chlorocarbonyl)oxy]-2-methylpropane; Isobutyl chloroformate;isobutyl carbonochloridate | 543-27-1 | C5H9ClO2 | 详情 | 详情 |
(III) | 49690 | isobutyl 3-fluorophenylcarbamate | C11H14FNO2 | 详情 | 详情 | |
(IV) | 49691 | isobutyl 4-bromo-3-fluorophenylcarbamate | C11H13BrFNO2 | 详情 | 详情 | |
(V) | 49692 | Tetrahydrothiopyran-4-one; Tetrahydro-4H-thiopyran-4-one; 4-Oxothiane | 1072-72-6 | C5H8OS | 详情 | 详情 |
(VI) | 49693 | isobutyl 3-fluoro-4-(4-hydroxytetrahydro-2H-thiopyran-4-yl)phenylcarbamate | C16H22FNO3S | 详情 | 详情 | |
(VII) | 49702 | isobutyl 3-fluoro-4-tetrahydro-2H-thiopyran-4-ylphenylcarbamate | C16H22FNO2S | 详情 | 详情 | |
(VIII) | 49706 | 4-[2-fluoro-4-[(isobutoxycarbonyl)amino]phenyl]tetrahydro-2H-thiopyranium-1-olate | C16H22FNO3S | 详情 | 详情 | |
(IX) | 49696 | (S)-(+)-Alpha-Chlorohydrin; (S)-(+)-3-Chloro-1,2-propanediol; (S)-3-Chloro-1,2-propanediol | 60827-45-4 | C3H7ClO2 | 详情 | 详情 |
(X) | 49707 | 4-[2-fluoro-4-[(5R)-5-(hydroxymethyl)-2-oxo-1,3-oxazolidin-3-yl]phenyl]tetrahydro-2H-thiopyranium-1-olate | C15H18FNO4S | 详情 | 详情 | |
(XI) | 49703 | m-nitrobenzenesulfonic acid; 3-nitrobenzenesulfonic acid | 98-47-5 | C6H5NO5S | 详情 | 详情 |
(XII) | 49704 | 4-[2-fluoro-4-[(5R)-5-([[(3-nitrophenyl)sulfonyl]oxy]methyl)-2-oxo-1,3-oxazolidin-3-yl]phenyl]tetrahydro-2H-thiopyranium-1-olate | C21H21FN2O8S2 | 详情 | 详情 | |
(XIII) | 49705 | 4-[4-[(5S)-5-(aminomethyl)-2-oxo-1,3-oxazolidin-3-yl]-2-fluorophenyl]tetrahydro-2H-thiopyranium-1-olate | C15H19FN2O3S | 详情 | 详情 | |
(XIV) | 49701 | Acetic anhydride; Acetyl oxide | 108-24-7 | C4H6O3 | 详情 | 详情 |