Imidazole → (R)-6-(3-(tert-butyldimethylsilyloxy)propyl)-6-(4-fluorophenyl)-3-((S)-1-(4-(6-oxo-1,6-dihydropyridin-3-yl)phenyl)ethyl)-1,3-oxazinan-2-one

HRID 406676Notes

Reaction equation

HRID 406676 reaction equation
[F:1][C:2]1[CH:7]=[CH:6][C:5]([C@:8]2([CH2:30][CH2:31][CH2:32][OH:33])[O:13][C:12](=[O:14])[N:11]([C@H:15]([C:17]3[CH:22]=[CH:21][C:20]([C:23]4[CH:28]=[CH:27][C:26](=[O:29])[NH:25][CH:24]=4)=[CH:19][CH:18]=3)[CH3:16])[CH2:10][CH2:9]2)=[CH:4][CH:3]=1.N1C=CN=C1.[C:39]([Si:43](Cl)([CH3:45])[CH3:44])([CH3:42])([CH3:41])[CH3:40]>C(Cl)Cl>[Si:43]([O:33][CH2:32][CH2:31][CH2:30][C@@:8]1([C:5]2[CH:6]=[CH:7][C:2]([F:1])=[CH:3][CH:4]=2)[O:13][C:12](=[O:14])[N:11]([C@H:15]([C:17]2[CH:22]=[CH:21][C:20]([C:23]3[CH:28]=[CH:27][C:26](=[O:29])[NH:25][CH:24]=3)=[CH:19][CH:18]=2)[CH3:16])[CH2:10][CH2:9]1)([C:39]([CH3:42])([CH3:41])[CH3:40])([CH3:45])[CH3:44]

Participants

5

Reactant 3

HCID 795ImidazoleHCID 28928tert-Butyldimethylsilyl chlorideHCID 59635635(R)-6-(4-fluorophenyl)-6-(3-hydroxypropyl)-3-((S)-1-(4-(6-oxo-1,6-dihydropyridin-3-yl)phenyl)ethyl)-1,3-oxazinan-2-one

Product 1

HCID 59635779(R)-6-(3-(tert-butyldimethylsilyloxy)propyl)-6-(4-fluorophenyl)-3-((S)-1-(4-(6-oxo-1,6-dihydropyridin-3-yl)phenyl)ethyl)-1,3-oxazinan-2-oneYield 27.2%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

A mixture of (R)-6-(4-fluorophenyl)-6-(3-hydroxypropyl)-3-((S)-1-(4-(6-oxo-1,6-dihydropyridin-3-yl)phenyl)ethyl)-1,3-oxazinan-2-one (100 mg, 0.78 mmol), imidazole (142.8 mg, 2.1 mmol), and tert-butylchlorodimethylsilane (350 mg, 2.34 mmol) in CH2Cl2 (20 mL) was stirred overnight. The mixture was washed with water and extracted with EtOAc. The combined organic phase was washed with brine, dried over Na2SO4, filtered and concentrated to give crude (R)-6-(3-(tert-butyldimethylsilyloxy)propyl)-6-(4-fluorophenyl)-3-((S)-1-(4-(6-oxo-1,6-dihydropyridin-3-yl)phenyl)ethyl)-1,3-oxazinan-2-one (120 mg), which was used for the next step without further purification.

Workup

  1. washThe mixture was washed with water
  2. extractionextracted with EtOAc
  3. washThe combined organic phase was washed with brine
  4. dry with materialdried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated

Sources & evidence

ORD record
ord-f448460a1ba643c7b03fcd495ff91e29
Source dataset
uspto-grants-2014_06
Patent number
US08754076B2

Reaction notes

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