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Sodium Bicarbonate → (5R)-3-(3-Fluoro-4-(2-methylimidazol-1-yl)phenyl)-5-hydroxymethyloxazolidin-2-one

HRID 8154
Notes
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Reaction equation

HRID 8154 reaction equation
C(O[C:9]([NH:11][C:12]1[CH:13]=[CH:14][C:15]([N:19]2[CH:23]=[CH:22][N:21]=[C:20]2[CH3:24])=[C:16]([F:18])[CH:17]=1)=O)C1C=CC=CC=1.C([Li])CCC.[CH2:30]([O:34][C:35](=[O:39])CCC)[C@@H:31]1[O:33]C1.C(=O)(O)[O-].[Na+]>O1CCCC1.CN1CCCN(C)C1=O.C(OCC)(=O)C>[F:18][C:16]1[CH:17]=[C:12]([N:11]2[CH2:9][C@H:30]([CH2:31][OH:33])[O:34][C:35]2=[O:39])[CH:13]=[CH:14][C:15]=1[N:19]1[CH:23]=[CH:22][N:21]=[C:20]1[CH3:24]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

8

Reactant 4

HCID 516892Sodium BicarbonateHCID 2724536(2R)-Oxiran-2-ylmethyl butanoateHCID 218766515-Benzyloxycarbonylamino-2-(2-methyl-imidazol-1-yl)fluorobenzeneHCID 178418339Butyllithium

Product 1

HCID 21356557(5R)-3-(3-Fluoro-4-(2-methylimidazol-1-yl)phenyl)-5-hydroxymethyloxazolidin-2-oneYield 44.5%

Reagents, catalysts & solvents

3
HCID 8028TetrahydrofuranSolvent2×HCID 8857Ethyl AcetateSolventHCID 816462(1H)-Pyrimidinone, tetrahydro-1,3-dimethyl-Solvent

Procedure

5-Benzyloxycarbonylamino-2-(2-methylimidazol-1-yl)fluorobenzene (54 g, 0.166 M) was dissolved in a mixture of dry tetrahydrofuran (600 ml) and 1,3-dimethyl-2,4,5,6-tetrahydro-2(1H)-pyrimidinone (100 ml) under nitrogen, cooled to −70°, and treated with a solution of n-butyllithium (1.6 M in isohexane, 114 ml), over 30 minutes. After stirring for 30 minutes at −70°, a solution of (R)glycidylbutyrate (26.35 g, 0.183 M) in dry tetrahydrofuran (50 ml) was added over 15 minutes. Stirring was continued for 16 hours allowing the temperature to rise to ambient. The mixture was treated with aqueous sodium bicarbonate (5%, 500 ml) and ethyl acetate (800 ml), the organic layer separated, and the aqueous extracted with further ethyl acetate (3×750 ml). The combined extracts were dried (magnesium sulfate) and evaporated, and the resulting oil triturated with diethyl ether. The resulting solid was recrystallisd from isopropanol to give the title compound (21.5 g).

Workup

  1. temperaturecooled to −70°
  2. stirringStirring
  3. waitwas continued for 16 hours
  4. customthe organic layer separated
  5. extractionthe aqueous extracted with further ethyl acetate (3×750 ml)
  6. dry with materialThe combined extracts were dried (magnesium sulfate)
  7. customevaporated
  8. customthe resulting oil triturated with diethyl ether

Sources & evidence

ORD record
ord-aa26d458b5ff4db1a0e567ab41a29afd
Source dataset
uspto-grants-2006_08
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07087629B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes