Dimethyl Sulfoxide → HCID 25206537, Verbindung

HRID 1873804Notizen

Reaktionsgleichung

[OH:1][CH:2]([C:19]1[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=1)[CH2:3][O:4][C:5]1[CH:18]=[CH:17][C:8]([CH2:9][CH:10]2[S:14][C:13](=[O:15])[NH:12][C:11]2=[O:16])=[CH:7][CH:6]=1.CS(C)=O.O=P12OP3(OP(OP(O3)(O1)=O)(=O)O2)=O.C(N(CC)CC)C>C(Cl)Cl>[O:1]=[C:2]([C:19]1[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=1)[CH2:3][O:4][C:5]1[CH:18]=[CH:17][C:8]([CH2:9][CH:10]2[S:14][C:13](=[O:15])[NH:12][C:11]2=[O:16])=[CH:7][CH:6]=1

Komponenten

Reaktionsbedingungen

Temperatur: 0 °C

Versuchsvorschrift

To a stirring solution of 5-[4-(2-hydroxy-2-phenylethoxy)benzyl]-1,3-thiazolidine-2,4-dione (1.00 g, 2.91 mmol) in DCM (35 ml) was added DMSO (2 ml) and the solution was cooled to 0° C. Phosphorus pentoxide (0.83 g, 2.91 mmol) was added followed by triethylamine (1.8 mL, 13.1 mmol). The reaction was allowed to slowly warm to RT. After 2 hours, the reaction mixture was partitioned between DCM and water and the organic phase was washed with brine, dried (Na2SO4), filtered and evaporated in vacuo. The resulting yellow oil was chromatographed on silica gel eluting with 25-35% EtOAc/hexanes. Fractions containing product were combined and evaporated in vacuo to give 0.40 g (40%) of the title compound as a white solid. Trituration with ether afforded 245 mg of clean product. MS (ESI−) for C18H15NO4S m/z 340.1 (M−H)−

Aufarbeitung

temperatureto slowly warm to RT
customthe reaction mixture was partitioned between DCM and water
washthe organic phase was washed with brine
dry with materialdried (Na2SO4)
filtrationfiltered
customevaporated in vacuo
customThe resulting yellow oil was chromatographed on silica gel eluting with 25-35% EtOAc/hexanes
additionFractions containing product
customevaporated in vacuo

Quellen und Nachweise

ORD-Eintrag: ord-6aa7ee4729044f4cb808e1601dc412f8
Quelldatensatz: uspto-grants-2012_11
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US08304441B2

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