Triethylamine → 6-allyl-3-((S)-1-(4-bromophenyl)ethyl)-6-isopropyl-1,3-oxazinan-2-one

HRID 406754Notes

Reaction equation

HRID 406754 reaction equation
[Br:1][C:2]1[CH:7]=[CH:6][C:5]([C@@H:8]([NH:10][CH2:11][CH2:12][C:13]([CH:18]([CH3:20])[CH3:19])([OH:17])[CH2:14][CH:15]=[CH2:16])[CH3:9])=[CH:4][CH:3]=1.C(N(CC)CC)C.Cl[C:29](Cl)([O:31]C(=O)OC(Cl)(Cl)Cl)Cl>C(Cl)Cl>[CH2:14]([C:13]1([CH:18]([CH3:20])[CH3:19])[O:17][C:29](=[O:31])[N:10]([C@H:8]([C:5]2[CH:4]=[CH:3][C:2]([Br:1])=[CH:7][CH:6]=2)[CH3:9])[CH2:11][CH2:12]1)[CH:15]=[CH2:16]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 94429TriphosgeneHCID 596357281-((S)-1-(4-bromophenyl)ethylamino)-3-isopropylhex-5-en-3-ol

Product 1

HCID 596357496-allyl-3-((S)-1-(4-bromophenyl)ethyl)-6-isopropyl-1,3-oxazinan-2-oneYield 111.1%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of 1-((S)-1-(4-bromophenyl)ethylamino)-3-isopropylhex-5-en-3-ol (802 mg, 2.366 mmol) and triethylamine (139 mg, 2.366 mmol) in CH2Cl2 (20 mL) was added triphosgene (348 mg, 1.18 mmol) at 0° C. under N2, and the mixture was stirred at rt overnight. The reaction mixture was quenched with water, and extracted with CH2Cl2. The organic layer was washed with brine, dried over Na2SO4, filtered, concentrated, and purified by column chromatography to give 6-allyl-3-((S)-1-(4-bromophenyl)ethyl)-6-isopropyl-1,3-oxazinan-2-one (480 mg, 56% yield),

Workup

  1. customThe reaction mixture was quenched with water
  2. extractionextracted with CH2Cl2
  3. washThe organic layer was washed with brine
  4. dry with materialdried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated
  7. custompurified by column chromatography

Sources & evidence

ORD record
ord-1f89713139aa42229b7f1c08069233e0
Source dataset
uspto-grants-2014_06
Patent number
US08754076B2

Reaction notes

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