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

HRID 2036436Notes

Reaction equation

HRID 2036436 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].C1C[O:30]CC1>>[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:30])[O:9][C:8]2=[O:10])[CH3:12])=[CH:14][CH:15]=1

Participants

3

Reactant 2

HCID 8028Tetrahydrofuran2×HCID 53473487(R)-6-allyl-3-((S)-1-(4-bromophenyl)ethyl)-6-(4-fluorophenyl)-1,3-oxazinan-2-one

Product 1

HCID 59532370(R)-3-((S)-1-(4-bromophenyl)ethyl)-6-(4-fluorophenyl)-6-(3-hydroxy-propyl)-1,3-oxazinan-2-oneYield 92%

Procedure

To a solution of (R)-6-allyl-3-((S)-1-(4-bromophenyl)ethyl)-6-(4-fluorophenyl)-1,3-oxazinan-2-one (1.19 g, 2.8 mmol) in THF (30 mL) was added BH3 THF (8.5 mL, 1 mol/L, 8.5 mmol) at 0° C. under nitrogen atmosphere. The formed mixture was stirred for 2 h. The reaction was quenched with water. Then NaOH (1 mol/L, 6 mL) and H2O2 (5 mL) were added to the above mixture. When the reaction was over, the mixture was extracted with EtOAc. The combined organic phase was concentrated to give the crude product, which was purified by preparative TLC to give (R)-3-((S)-1-(4-bromophenyl)ethyl)-6-(4-fluorophenyl)-6-(3-hydroxypropyl)-1,3-oxazinan-2-one (1.13 g, 92%).

Workup

  1. customThe reaction was quenched with water
  2. additionThen NaOH (1 mol/L, 6 mL) and H2O2 (5 mL) were added to the above mixture
  3. extractionwas extracted with EtOAc
  4. concentrationThe combined organic phase was concentrated
  5. customto give the crude product, which
  6. customwas purified by preparative TLC

Sources & evidence

ORD record
ord-7f35e786de9449ce82ae3a63b5660033
Source dataset
uspto-grants-2013_11
Patent number
US08575157B2

Reaction notes

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