Pyridine → (1S,6R,9aR)-1-methyl-6-(3,4,5-trifluorophenyl)tetrahydro[1,4]oxazino[3,4-c][1,4]oxazine-3,4-dione

HRID 16374

Reaktionsgleichung

Reaktionsgleichung von HRID 16374
[F:1][C:2]1[CH:3]=[C:4]([C@H:10]2[NH:15][C@@H:14]([C@@H:16]([OH:18])[CH3:17])[CH2:13][O:12][CH2:11]2)[CH:5]=[C:6]([F:9])[C:7]=1[F:8].N1C=CC=CC=1.[C:25](Cl)(=[O:29])[C:26](Cl)=[O:27]>ClCCl.O>[CH3:17][C@H:16]1[C@H:14]2[CH2:13][O:12][CH2:11][C@@H:10]([C:4]3[CH:3]=[C:2]([F:1])[C:7]([F:8])=[C:6]([F:9])[CH:5]=3)[N:15]2[C:26](=[O:27])[C:25](=[O:29])[O:18]1

Komponenten

6

Edukt 3

HCID 1049PyridineHCID 65578Oxalyl chlorideHCID 68716490(S)-1-[(3R,5R)-5-(3,4,5-trifluorophenyl)morpholine-3-yl]ethanol

Produkt 1

HCID 68718058(1S,6R,9aR)-1-methyl-6-(3,4,5-trifluorophenyl)tetrahydro[1,4]oxazino[3,4-c][1,4]oxazine-3,4-dione

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962WaterLösungsmittelHCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

To a solution consisting of (S)-1-[(3R,5R)-5-(3,4,5-trifluorophenyl)morpholine-3-yl]ethanol (1.18 g) and pyridine (5 mL) in dichloromethane (20 mL) was dropwise added oxalyl chloride (1.18 mL) while cooling with ice. The resultant solution was stirred at the same temperature for 30 minutes, and then at room temperature for 1 hour. The reaction solution was diluted with water, and the organic layer was partitioned. The organic layer was then dried over anhydrous magnesium sulfate. Solvent was removed by distillation under reduced pressure, and the resulting residue was purified by silica gel column chromatography (heptane/ethyl acetate→ethyl acetate), to thereby obtain the titled compound (912 mg). The physical properties of the compound were as follows. ESI-MS; m/z 316 [M++H]. 1H-NMR (CDCl3) δ (ppm): 1.54 (d, J=7.2 Hz, 3H), 3.50 (dd, J=11.6, 11.6 Hz, 1H), 3.68 (dd, J=12.4, 8.0 Hz, 1H), 4.06 (dd, J=11.6, 4.4 Hz, 1H), 4.18 (dd, J=12.4, 4.8 Hz, 1H), 4.49 (ddd, J=12.0, 4.4, 4.0 Hz, 1H), 4.64-4.70 (m, 1H), 4.78 (dd, J=8.4, 5.2 Hz, 1H), 7.01 (dd, J=8.0, 6.4 Hz, 2H).

Aufarbeitung

  1. temperaturewhile cooling with ice
  2. customthe organic layer was partitioned
  3. dry with materialThe organic layer was then dried over anhydrous magnesium sulfate
  4. customSolvent was removed by distillation under reduced pressure
  5. customthe resulting residue was purified by silica gel column chromatography (heptane/ethyl acetate→ethyl acetate)

Quellen und Nachweise

ORD-Eintrag
ord-8bd413c2f5d44c51b68064144a54694e
Quelldatensatz
uspto-grants-2010_06
Patentnummer
US07737141B2

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