Dimethylformamide → 1-benzyl-3-[(4{[2-(2-furyl)-5-methyl-1,3-oxazol-4-yl]methoxy}benzyl)oxy]-1H-pyrazole-4-carboxamide

HRID 2221723Notes

Reaction equation

HRID 2221723 reaction equation
[CH2:1]([N:8]1[CH:12]=[C:11]([C:13](O)=[O:14])[C:10]([O:16][CH2:17][C:18]2[CH:23]=[CH:22][C:21]([O:24][CH2:25][C:26]3[N:27]=[C:28]([C:32]4[O:33][CH:34]=[CH:35][CH:36]=4)[O:29][C:30]=3[CH3:31])=[CH:20][CH:19]=2)=[N:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.Cl.C([N:40]=C=NCCCN(C)C)C.CN(C)C=O>O>[CH2:1]([N:8]1[CH:12]=[C:11]([C:13]([NH2:40])=[O:14])[C:10]([O:16][CH2:17][C:18]2[CH:19]=[CH:20][C:21]([O:24][CH2:25][C:26]3[N:27]=[C:28]([C:32]4[O:33][CH:34]=[CH:35][CH:36]=4)[O:29][C:30]=3[CH3:31])=[CH:22][CH:23]=2)=[N:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

5

Reactant 3

HCID 6228DimethylformamideHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 692172301-benzyl-3-[(4{[2-(2-furyl)-5-methyl-1,3-oxazol-4-yl]methoxy}benzyl)oxy]-1H-pyrazole-4-carboxylic acid

Product 1

HCID 692176221-benzyl-3-[(4{[2-(2-furyl)-5-methyl-1,3-oxazol-4-yl]methoxy}benzyl)oxy]-1H-pyrazole-4-carboxamideYield 100.2%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

A mixture of 1-benzyl-3-[(4{[2-(2-furyl)-5-methyl-1,3-oxazol-4-yl]methoxy}benzyl)oxy]-1H-pyrazole-4-carboxylic acid (1.10 g), 1-hydroxybenzotriazole ammonia complex (0.53 g), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (0.67 g) and N,N-dimethylformamide (50 mL) was stirred at room temperature for 3 days. Water was poured into the reaction mixture, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine, dried over anhydrous magnesium sulfate and concentrated to give 1-benzyl-3-[(4{[2-(2-furyl)-5-methyl-1,3-oxazol-4-yl]methoxy}benzyl)oxy]-1H-pyrazole-4-carboxamide as pale-yellow crystals (1.10 g, yield 99%). Recrystallization from ethyl acetate-hexane gave pale-yellow prism crystals. melting point: 139-140° C.

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe organic layer was washed with saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. concentrationconcentrated

Sources & evidence

ORD record
ord-5947ef40fbd14755ade0614350612f5f
Source dataset
uspto-grants-2008_05
Patent number
US07368578B2

Reaction notes

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