Water → (S)-3-((S)-1-(4-bromophenyl)ethyl)-6-(4-fluorophenyl)-6-(2-oxopropyl)-1,3-oxazinan-2-one

HRID 1096368Notes

Reaction equation

HRID 1096368 reaction equation
[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].[OH2:27].O=O>CN(C=O)C.Cl[Cu].Cl[Pd]Cl>[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][C:2](=[O:27])[CH3:3])[O:9][C:8]2=[O:10])[CH3:12])=[CH:14][CH:15]=1

Participants

7

Reactant 3

HCID 962WaterHCID 977OxygenHCID 53473487(R)-6-allyl-3-((S)-1-(4-bromophenyl)ethyl)-6-(4-fluorophenyl)-1,3-oxazinan-2-one

Product 1

HCID 59635654(S)-3-((S)-1-(4-bromophenyl)ethyl)-6-(4-fluorophenyl)-6-(2-oxopropyl)-1,3-oxazinan-2-oneYield 92%

Reagents, catalysts & solvents 3

HCID 24290Palladium ChlorideCatalystHCID 62652Cuprous chlorideCatalystHCID 6228DimethylformamideSolvent

Procedure

To a solution of (R)-6-allyl-3-((S)-1-(4-bromophenyl)ethyl)-6-(4-fluorophenyl)-1,3-oxazinan-2-one (5 g, 12 mmol) and CuCl (2.75 g, 27.8 mmol) in dry DMF (50 mL) was added H2O (20 mL) and PdCl2 (950 mg, 3.2 mmol) at room temperature. The mixture was vigorously stirred under a balloon of oxygen for 24 h. After TLC showed the starting material had disappeared, the solid was filtered off. Water (200 mL) and EtOAc (50 mL) was added, the layers were separated and the aqueous layer was extracted with EtOAc (3×40 mL). The combined organic layer was washed with brine, dried over Na2SO4, filtered and concentrated to give (S)-3-((S)-1-(4-bromophenyl)ethyl)-6-(4-fluorophenyl)-6-(2-oxopropyl)-1,3-oxazinan-2-one (5.25 g, 92%), which was purified by column chromatography. 1H NMR (CDCl3): 1.47 (s, 3H), 2.06 (s, 3H), 2.10-2.36 (m, 3H), 2.58 (m, 1H), 2.90 (m, 2H), 5.58 (m, 1H), 6.69 (m, 1H), 6.79 (m, 1H), 7.02 (m, 2H), 7.19-7.33 (m, 4H).

Workup

  1. filtrationthe solid was filtered off
  2. additionWater (200 mL) and EtOAc (50 mL) was added
  3. customthe layers were separated
  4. extractionthe aqueous layer was extracted with EtOAc (3×40 mL)
  5. washThe combined organic layer was washed with brine
  6. dry with materialdried over Na2SO4
  7. filtrationfiltered
  8. concentrationconcentrated

Sources & evidence

ORD record
ord-0e0c594506744c299ac7cc494bcd54be
Source dataset
uspto-grants-2012_03
Patent number
US08138178B2

Reaction notes

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