Dimethylformamide → ethyl 3-[1-[2-[4-(5-methyl-2-phenyl-4-oxazolylmethoxy)phenyl]ethyl]-3-phenyl-1H-pyrazol-4-yl]propionate

HRID 350130Notes

Reaction equation

HRID 350130 reaction equation
[H-].[Na+].CN(C)C=O.[C:8]1([C:14]2[C:18]([CH2:19][CH2:20][C:21]([O:23][CH2:24][CH3:25])=[O:22])=[CH:17][NH:16][N:15]=2)[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1.CS(O[CH2:31][CH2:32][C:33]1[CH:38]=[CH:37][C:36]([O:39][CH2:40][C:41]2[N:42]=[C:43]([C:47]3[CH:52]=[CH:51][CH:50]=[CH:49][CH:48]=3)[O:44][C:45]=2[CH3:46])=[CH:35][CH:34]=1)(=O)=O>O>[CH3:46][C:45]1[O:44][C:43]([C:47]2[CH:48]=[CH:49][CH:50]=[CH:51][CH:52]=2)=[N:42][C:41]=1[CH2:40][O:39][C:36]1[CH:35]=[CH:34][C:33]([CH2:32][CH2:31][N:16]2[CH:17]=[C:18]([CH2:19][CH2:20][C:21]([O:23][CH2:24][CH3:25])=[O:22])[C:14]([C:8]3[CH:9]=[CH:10][CH:11]=[CH:12][CH:13]=3)=[N:15]2)=[CH:38][CH:37]=1

Participants

6

Reactant 4

HCID 6228DimethylformamideHCID 24758Sodium hydrideHCID 867604162-[4-(5-Methyl-2-phenyl-4-oxazolylmethoxy)phenyl]ethyl methanesulfonateHCID 178471160HCID 178471160, compound

Product 1

HCID 69421756ethyl 3-[1-[2-[4-(5-methyl-2-phenyl-4-oxazolylmethoxy)phenyl]ethyl]-3-phenyl-1H-pyrazol-4-yl]propionateYield 62%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
0 °C

Procedure

Sodium hydride (60%, oily, 170 mg) was added to an N,N-dimethylformamide solution (50 ml) of ethyl 3-(3-phenyl-1H-pyrazole-4-yl)propionate (890 mg) at 0° C., and this mixture was stirred at 0° C. for 30 minutes. 2-[4-(5-Methyl-2-phenyl-4-oxazolylmethoxy)phenyl]ethyl methane sulfonate (2.79 g) was added to the reaction mixture, which was stirred at 90° C. for 1 hour. The reaction mixture was poured into water, which was extracted with ethyl acetate. The ethyl acetate layer was washed with saturated aqueous sodium chloride solution, dried (MgSO4), then concentrated. The residue was subjected to silica gel column chromatography, and ethyl 3-[1-[2-[4-(5-methyl-2-phenyl-4-oxazolylmethoxy)phenyl]ethyl]-3-phenyl-1H-pyrazol-4-yl]propionate (1.19 g, yield: 62%) was obtained as colorless crystals. This was recrystallized from ethyl acetate-hexane. Melting point: 81–82° C.

Workup

  1. stirringwas stirred at 90° C. for 1 hour
  2. extractionwas extracted with ethyl acetate
  3. washThe ethyl acetate layer was washed with saturated aqueous sodium chloride solution
  4. dry with materialdried (MgSO4)
  5. concentrationconcentrated

Sources & evidence

ORD record
ord-74a83ad9c1ed47e786808b083d7e48eb
Source dataset
uspto-grants-2007_02
Patent number
US07179823B1

Reaction notes

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