Hydrochloric Acid → (R)-3-((S)-1-(4-bromophenyl)ethyl)-6-(4-fluorophenyl)-6-(3-hydroxy-propyl)-1,3-oxazinan-2-one

HRID 450988Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 450988
[CH2:1]([C@@:4]1([C:20]2[CH:25]=[CH:24][C:23]([F:26])=[CH:22][CH:21]=2)[O:9][C:8](=[O:10])[N:7]([C@H:11]([C:13]2[CH:18]=[CH:17][C:16]([Br:19])=[CH:15][CH:14]=2)[CH3:12])[CH2:6][CH2:5]1)[CH:2]=[CH2:3].B.C1C[O:31]CC1.[OH-].[Na+].OO.Cl>C1COCC1.O>[Br:19][C:16]1[CH:17]=[CH:18][C:13]([C@@H:11]([N:7]2[CH2:6][CH2:5][C@@:4]([C:20]3[CH:21]=[CH:22][C:23]([F:26])=[CH:24][CH:25]=3)([CH2:1][CH2:2][CH2:3][OH:31])[O:9][C:8]2=[O:10])[CH3:12])=[CH:14][CH:15]=1

Komponenten

8

Edukt 5

HCID 313Hydrochloric AcidHCID 784Hydrogen PeroxideHCID 14798Sodium HydroxideHCID 2723981Borane;tetrahydrofuranHCID 53473487(R)-6-allyl-3-((S)-1-(4-bromophenyl)ethyl)-6-(4-fluorophenyl)-1,3-oxazinan-2-one

Produkt 1

HCID 59532370(R)-3-((S)-1-(4-bromophenyl)ethyl)-6-(4-fluorophenyl)-6-(3-hydroxy-propyl)-1,3-oxazinan-2-oneAusbeute 38 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962WaterLösungsmittel2×HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

To a solution of (R)-6-allyl-3-((S)-1-(4-bromophenyl)ethyl)-6-(4-fluorophenyl)-1,3-oxazinan-2-one (1 g, 2.4 mmol) in dry THF (15 mL) was added dropwise BH3.THF (5 mL, 1 M) at 0° C. After stirring for 2 h at rt, the reaction mixture was cooled to 0° C. and water (1 mL), aqueous NaOH (0.5 mL, 3 M) and H2O2 (0.5 mL, 30%) were successively added. The mixture was stirred for 2-3 h at rt and diluted with water (8 mL). The pH was adjusted to 6-7 with 0.5 N HCl. The layers were separated, and the aqueous phase was extracted with EtOAc (3×10 mL). The combined organic layers were washed with a satd aq NaHCO3 (20 mL) and brine (20 mL), dried over Na2SO4, and concentrated in vacuo to give the crude product, which was purified by preparative TLC to afford (R)-3-((S)-1-(4-bromophenyl)ethyl)-6-(4-fluorophenyl)-6-(3-hydroxypropyl)-1,3-oxazinan-2-one (400 mg, 38%).

Aufarbeitung

  1. temperaturethe reaction mixture was cooled to 0° C.
  2. stirringThe mixture was stirred for 2-3 h at rt
  3. customThe layers were separated
  4. extractionthe aqueous phase was extracted with EtOAc (3×10 mL)
  5. washThe combined organic layers were washed with a satd aq NaHCO3 (20 mL) and brine (20 mL)
  6. dry with materialdried over Na2SO4
  7. concentrationconcentrated in vacuo
  8. customto give the crude product, which
  9. customwas purified by preparative TLC

Quellen und Nachweise

ORD-Eintrag
ord-777d15558a884a608f6e33241bcbaa67
Quelldatensatz
uspto-grants-2013_07
Patentnummer
US08487094B2

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