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Ethyl Acetate → N-Cyclopropyl-N-[1-(5-methyl-pyrazin-2-yl)-piperidin-4-yl]-4-oxazol-5-yl-benzamide

HRID 68857
Notes
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Reaction equation

HRID 68857 reaction equation
[CH:1]1([N:4]([CH:18]2[CH2:23][CH2:22][NH:21][CH2:20][CH2:19]2)[C:5](=[O:17])[C:6]2[CH:11]=[CH:10][C:9]([C:12]3[O:16][CH:15]=[N:14][CH:13]=3)=[CH:8][CH:7]=2)[CH2:3][CH2:2]1.Cl[C:25]1[CH:30]=[N:29][C:28]([CH3:31])=[CH:27][N:26]=1.C(=O)([O-])[O-].[Cs+].[Cs+].C(OCC)(=O)C>CN(C)C=O.O>[CH:1]1([N:4]([CH:18]2[CH2:23][CH2:22][N:21]([C:25]3[CH:30]=[N:29][C:28]([CH3:31])=[CH:27][N:26]=3)[CH2:20][CH2:19]2)[C:5](=[O:17])[C:6]2[CH:7]=[CH:8][C:9]([C:12]3[O:16][CH:15]=[N:14][CH:13]=3)=[CH:10][CH:11]=2)[CH2:3][CH2:2]1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

7

Reactant 4

HCID 8857Ethyl AcetateHCID 10796Cesium carbonateHCID 126003862-Chloro-5-methylpyrazineHCID 68289931N-Cyclopropyl-4-oxazol-5-yl-N-piperidin-4-yl-benzamide

Product 1

HCID 68290609N-Cyclopropyl-N-[1-(5-methyl-pyrazin-2-yl)-piperidin-4-yl]-4-oxazol-5-yl-benzamide

Reagents, catalysts & solvents 2

HCID 962
Water
Solvent
HCID 6228DimethylformamideSolvent

Conditions

Temperature
80 °C

Procedure

A mixture of N-cyclopropyl-4-oxazol-5-yl-N-piperidin-4-yl-benzamide (600 mg), 2-chloro-5-methyl-pyrazine (100 mg), and cesium carbonate (300 mg) in N,N-dimethylformamide (10 mL) is stirred for 3 days at 80° C. After cooling to room temperature ethyl acetate and water are added. The organic phase is separated, washed with water and brine, dried over MgSO4, and concentrated in vacuo. The residue is chromatographed on silica gel (ethyl acetate/methanol 7:3) to give the title compound. LC (method 1): tR=1.08 min; Mass spectrum (ESI+): m/z=404 [M+H]+.

Workup

  1. additionare added
  2. customThe organic phase is separated
  3. washwashed with water and brine
  4. dry with materialdried over MgSO4
  5. concentrationconcentrated in vacuo
  6. customThe residue is chromatographed on silica gel (ethyl acetate/methanol 7:3)

Sources & evidence

ORD record
ord-8b26fe2d26d141b59329e926cf0a860e
Source dataset
uspto-grants-2014_09
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08822471B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes