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

HRID 2221727Notes

Reaction equation

HRID 2221727 reaction equation
Cl[CH2:2][C:3]1[CH:21]=[CH:20][C:6]([O:7][CH2:8][C:9]2[N:10]=[C:11]([C:15]3[O:16][CH:17]=[CH:18][CH:19]=3)[O:12][C:13]=2[CH3:14])=[C:5]([O:22][CH3:23])[CH:4]=1.[CH2:24]([N:31]1[CH:35]=[C:34]([C:36]([O:38][CH2:39][CH3:40])=[O:37])[C:33]([OH:41])=[N:32]1)[C:25]1[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=1.C(=O)([O-])[O-].[K+].[K+].CN(C)C=O>O>[CH2:24]([N:31]1[CH:35]=[C:34]([C:36]([O:38][CH2:39][CH3:40])=[O:37])[C:33]([O:41][CH2:2][C:3]2[CH:21]=[CH:20][C:6]([O:7][CH2:8][C:9]3[N:10]=[C:11]([C:15]4[O:16][CH:17]=[CH:18][CH:19]=4)[O:12][C:13]=3[CH3:14])=[C:5]([O:22][CH3:23])[CH:4]=2)=[N:32]1)[C:25]1[CH:26]=[CH:27][CH:28]=[CH:29][CH:30]=1

Participants

6

Reactant 4

HCID 6228DimethylformamideHCID 11430Potassium CarbonateHCID 223445974-(4-Chloromethyl-2-methoxyphenoxymethyl)-2-(2-furyl)-5-methyloxazoleHCID 178469738HCID 178469738, compound

Product 1

HCID 69215985ethyl 1-benzyl-3-[(4-{[2-(2-furyl)-5-methyl-1,3-oxazol-4-yl]methoxy}-3-methoxybenzyl)oxy]-1H-pyrazole-4-carboxylateYield 86%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
80 °C

Procedure

A mixture of 4-(4-chloromethyl-2-methoxyphenoxy)methyl-5-methyl-2-(2-furyl)-1,3-oxazole (1.94 g), ethyl 1-benzyl-3-hydroxy-1H-pyrazole-4-carboxylate (1.31 g), potassium carbonate (0.73 g) and N,N-dimethylformamide (50 mL) was stirred at 80° C. for 15 hrs. Water was poured into the reaction mixture, and the mixture was extracted with ethyl acetate. The ethyl acetate layer was washed with saturated brine, dried over anhydrous magnesium sulfate and concentrated. The residue was subjected to silica gel column chromatography and eluted with ethyl acetate-hexane (1:1, v/v) to give ethyl 1-benzyl-3-[(4-{[2-(2-furyl)-5-methyl-1,3-oxazol-4-yl]methoxy}-3-methoxybenzyl)oxy]-1H-pyrazole-4-carboxylate (2.48 g, yield 86%) as colorless crystals. Recrystallization from ethyl acetate-hexane gave colorless prism crystals. melting point: 117-118° C.

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe ethyl acetate layer was washed with saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. concentrationconcentrated
  5. washeluted with ethyl acetate-hexane (1:1

Sources & evidence

ORD record
ord-9b0899bc4d724acda1701819026a108e
Source dataset
uspto-grants-2008_05
Patent number
US07368578B2

Reaction notes

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