Triethylamine → Tert-butyl 3-(5-(3-fluorophenyl)-3-isobutyryl-2-phenyl-2,3-dihydro-1,3,4-thiadiazol-2-yl)butylcarbamate

HRID 270497Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 270497
[F:1][C:2]1[CH:3]=[C:4]([C:8]2[S:12][C:11]([CH:19]([CH3:30])[CH2:20][CH2:21][NH:22][C:23](=[O:29])[O:24][C:25]([CH3:28])([CH3:27])[CH3:26])([C:13]3[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=3)[NH:10][N:9]=2)[CH:5]=[CH:6][CH:7]=1.[C:31](Cl)(=[O:35])[CH:32]([CH3:34])[CH3:33].C(N(CC)CC)C>C(Cl)Cl>[F:1][C:2]1[CH:3]=[C:4]([C:8]2[S:12][C:11]([CH:19]([CH3:30])[CH2:20][CH2:21][NH:22][C:23](=[O:29])[O:24][C:25]([CH3:26])([CH3:28])[CH3:27])([C:13]3[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=3)[N:10]([C:31](=[O:35])[CH:32]([CH3:34])[CH3:33])[N:9]=2)[CH:5]=[CH:6][CH:7]=1

Komponenten

5

Edukt 3

HCID 8471TriethylamineHCID 62325Isobutyryl chlorideHCID 67215287Tert-butyl 3-(5-(3-fluorophenyl)-2-phenyl-2,3-dihydro-1,3,4-thiadiazol-2-yl)butylcarbamate

Produkt 1

HCID 67214508Tert-butyl 3-(5-(3-fluorophenyl)-3-isobutyryl-2-phenyl-2,3-dihydro-1,3,4-thiadiazol-2-yl)butylcarbamate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

To a solution of tert-butyl 3-(5-(3-fluorophenyl)-2-phenyl-2,3-dihydro-1,3,4-thiadiazol-2-yl)butylcarbamate (50 mg, 116 mmol) in anhydrous DCM (5 mL) was added isobutyryl chloride (16 μL, 151 mmol) followed by triethylamine (21 μL, 151 mmol). After stirring at room temperature for 16 hours the mixture was partitioned between sat. NaHCO3 (20 mL) and DCM (20 mL). The aqueous layer was extracted with DCM (10 mL) and the combined organic phases were washed with brine (20 mL), dried over Na2SO4 and concentrated under reduced pressure. The residue was chromatographed (19:1, hexanes/ethyl acetate) to afford two diastereomeric pairs, diastereomer pair A (more polar, 13.1 mg) and diastereomer pair B (less polar, 11 mg).

Aufarbeitung

  1. customwas partitioned between sat. NaHCO3 (20 mL) and DCM (20 mL)
  2. extractionThe aqueous layer was extracted with DCM (10 mL)
  3. washthe combined organic phases were washed with brine (20 mL)
  4. dry with materialdried over Na2SO4
  5. concentrationconcentrated under reduced pressure
  6. customThe residue was chromatographed (19:1, hexanes/ethyl acetate)
  7. customto afford two diastereomeric pairs, diastereomer pair A (more polar, 13.1 mg) and diastereomer pair B (less polar, 11 mg)

Quellen und Nachweise

ORD-Eintrag
ord-74552c787db344a9b54b80002a93a304
Quelldatensatz
uspto-grants-2008_11
Patentnummer
US07449486B2

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