Tetrabutylammonium Fluoride → HCID 11497948, Verbindung

HRID 1994558Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1994558
[F:1][C:2]([F:46])([F:45])[C:3]1[CH:4]=[C:5]([C@H:13]2[O:17][C:16](=[O:18])[N:15]([CH2:19][C:20]3[CH:25]=[C:24]([C:26]([F:29])([F:28])[F:27])[CH:23]=[CH:22][C:21]=3[C:30]3[S:31][CH:32]=[C:33]([CH2:35][O:36][Si](C(C)(C)C)(C)C)[N:34]=3)[C@H:14]2[CH3:44])[CH:6]=[C:7]([C:9]([F:12])([F:11])[F:10])[CH:8]=1.CCCC[N+](CCCC)(CCCC)CCCC.[F-]>C1COCC1>[F:46][C:2]([F:1])([F:45])[C:3]1[CH:4]=[C:5]([C@H:13]2[O:17][C:16](=[O:18])[N:15]([CH2:19][C:20]3[CH:25]=[C:24]([C:26]([F:28])([F:29])[F:27])[CH:23]=[CH:22][C:21]=3[C:30]3[S:31][CH:32]=[C:33]([CH2:35][OH:36])[N:34]=3)[C@H:14]2[CH3:44])[CH:6]=[C:7]([C:9]([F:12])([F:11])[F:10])[CH:8]=1

Komponenten

4

Edukt 2

HCID 2724141Tetrabutylammonium FluorideHCID 86603422HCID 86603422, Verbindung

Produkt 1

HCID 11497948HCID 11497948, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel2×

Reaktionsbedingungen

Temperatur
0 °C

Versuchsvorschrift

To a 0° C. solution of (4S,5R)-5-[3,5-bis(trifluoromethyl)phenyl]-3-[2-[4-({[tert-butyl(dimethyl)silyl]oxy}methyl)-1,3-thiazol-2-yl]-5-(trifluoromethyl)benzyl]-4-methyl-1,3-oxazolidin-2-one (Example 178) (54.0 mg, 0.0774 mmol) in THF (10 mL) was added TBAF (194 μL of a 1M solution in THF, 0.194 mmol). The reaction was stirred at 0° C. for 30 minutes and then quenched by pouring into saturated NH4Cl (15 mL). The mixture was extracted with EtOAc (60 mL) and the organic layer was washed with water and brine (15 mL each). The organic layer was dried over Na2SO4, filtered, and concentrated. Purification of the residue by flash chromatography on silica gel (60% EtOAc/hexanes) afforded (4S,5R)-5-[3,5-bis(trifluoromethyl)phenyl]-3-[2-[4-(hydroxymethyl)-1,3-thiazol-2-yl]-5-(trifluoromethyl)benzyl]-4-methyl-1,3-oxazolidin-2-one. Rf=0.11 (40% EtOAc/hexanes). LCMS=585.1 (M+1)+. 1H NMR (CDCl3, 500 MHz) δ 7.85 (s, 1H), 7.81 (d, J=8.0 Hz, 1H), 7.70-7.73 (m, 4H), 7.36 (s, 1H), 5.52 (d, J=8.0 Hz, 1H), 5.39 (d, J=15.3 Hz, 1H), 4.81 (s, 2H), 4.55 (d, J=15.3 Hz, 1H), 3.87 (m, 1H), 0.69 (d, J=6.7 Hz, 3H).

Aufarbeitung

  1. customquenched
  2. additionby pouring into saturated NH4Cl (15 mL)
  3. extractionThe mixture was extracted with EtOAc (60 mL)
  4. washthe organic layer was washed with water and brine (15 mL each)
  5. dry with materialThe organic layer was dried over Na2SO4
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customPurification of the residue by flash chromatography on silica gel (60% EtOAc/hexanes)

Quellen und Nachweise

ORD-Eintrag
ord-cc57f3c8280a44b5b496f7bf729d7942
Quelldatensatz
uspto-grants-2010_01
Patentnummer
US07652049B2

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