Imidazole → HCID 58109239, compound

HRID 2037537Notes

Reaction equation

HRID 2037537 reaction equation
CS(O[CH2:6][CH2:7][C@@:8]1([C:31]2[CH:36]=[CH:35][C:34]([F:37])=[CH:33][CH:32]=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]([F:29])=[CH:25][C:24]=3[F:30])=[CH:19][CH:18]=2)[CH3:16])[CH2:10][CH2:9]1)(=O)=O.[NH:38]1[CH:42]=[CH:41][N:40]=[CH:39]1.C([O-])([O-])=O.[K+].[K+]>C(#N)C>[F:30][C:24]1[CH:25]=[C:26]([F:29])[CH:27]=[CH:28][C:23]=1[C:20]1[CH:21]=[CH:22][C:17]([C@@H:15]([N:11]2[CH2:10][CH2:9][C@@:8]([C:31]3[CH:32]=[CH:33][C:34]([F:37])=[CH:35][CH:36]=3)([CH2:7][CH2:6][N:38]3[CH:42]=[CH:41][N:40]=[CH:39]3)[O:13][C:12]2=[O:14])[CH3:16])=[CH:18][CH:19]=1

Participants

5

Reactant 3

HCID 795ImidazoleHCID 11430Potassium CarbonateHCID 86649947HCID 86649947, compound

Product 1

HCID 58109239HCID 58109239, compoundYield 1.2%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

A mixture of 2-((S)-3-((S)-1-(2′,4′-difluorobiphenyl-4-yl)ethyl)-6-(4-fluorophenyl)-2-oxo-1,3-oxazinan-6-yl)ethyl methanesulfonate (230 mg, 0.43 mmol), imidazole (44 mg, 0.65 mmol), K2CO3 (178.7 mg, 1.29 mmol) in acetonitrile (4 mL) was heated to reflux overnight. The solvent was removed and the residue was partitioned between EtOAc and water. The aqueous layer was extracted with EtOAc and the combined organic layer was washed with brine, dried over Na2SO4, filtered and concentrated to give the crude product, which was purified by preparative HPLC to give (R)-3-[(S)-1-(2′,4′-difluoro-biphenyl-4-yl)-ethyl]-6-(4-fluoro-phenyl)-6-(2-imidazol-1-yl-ethyl)-[1,3]oxazinan-2-one (2.5 mg, 1.2%). LC-MS Method 2 tR=2.14, min, m/z=506; 1H NMR (CDCl3): 1.51 (d, 3H), 2.16-2.63 (m, 7H), 2.94 (m, 2H), 3.91 (m, 1H), 4.32 (m, 1H), 5.66 (m, 1H), 6.25 (m, 1H), 6.81-6.90 (m, 2H), 6.94-7.08 (m, 5H), 7.14-7.26 (m, 6H).

Workup

  1. temperaturewas heated
  2. temperatureto reflux overnight
  3. customThe solvent was removed
  4. customthe residue was partitioned between EtOAc and water
  5. extractionThe aqueous layer was extracted with EtOAc
  6. washthe combined organic layer was washed with brine
  7. dry with materialdried over Na2SO4
  8. filtrationfiltered
  9. concentrationconcentrated
  10. customto give the crude product, which
  11. customwas purified by preparative HPLC

Sources & evidence

ORD record
ord-bab89b01d6d24903bf81ff5962f4e746
Source dataset
uspto-grants-2013_11
Patent number
US08575156B2

Reaction notes

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