Dimethylformamide → ethyl 3-[4-[2-(2-furyl)-5-methyl-4-oxazolylmethoxy]-3-methoxybenzyloxy]-1-(4-phenoxybenzyl)-1H-pyrazole-4-carboxylate

HRID 350307

Reaction equation

HRID 350307 reaction equation
[OH:1][C:2]1[C:6]([C:7]([O:9][CH2:10][CH3:11])=[O:8])=[CH:5][N:4]([CH2:12][C:13]2[CH:18]=[CH:17][C:16]([O:19][C:20]3[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=3)=[CH:15][CH:14]=2)[N:3]=1.Cl[CH2:27][C:28]1[CH:46]=[CH:45][C:31]([O:32][CH2:33][C:34]2[N:35]=[C:36]([C:40]3[O:41][CH:42]=[CH:43][CH:44]=3)[O:37][C:38]=2[CH3:39])=[C:30]([O:47][CH3:48])[CH:29]=1.C(=O)([O-])[O-].[K+].[K+].CN(C)C=O>O>[O:41]1[CH:42]=[CH:43][CH:44]=[C:40]1[C:36]1[O:37][C:38]([CH3:39])=[C:34]([CH2:33][O:32][C:31]2[CH:45]=[CH:46][C:28]([CH2:27][O:1][C:2]3[C:6]([C:7]([O:9][CH2:10][CH3:11])=[O:8])=[CH:5][N:4]([CH2:12][C:13]4[CH:18]=[CH:17][C:16]([O:19][C:20]5[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=5)=[CH:15][CH:14]=4)[N:3]=3)=[CH:29][C:30]=2[O:47][CH3:48])[N:35]=1

Participants

6

Reactant 4

HCID 6228DimethylformamideHCID 11430Potassium CarbonateHCID 223445974-(4-Chloromethyl-2-methoxyphenoxymethyl)-2-(2-furyl)-5-methyloxazoleHCID 178469747HCID 178469747, compound

Product 1

HCID 69421586ethyl 3-[4-[2-(2-furyl)-5-methyl-4-oxazolylmethoxy]-3-methoxybenzyloxy]-1-(4-phenoxybenzyl)-1H-pyrazole-4-carboxylateYield 94%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
80 °C

Procedure

A mixture of ethyl 3-hydroxy-1-(4-phenoxybenzyl)-1H-pyrazole-4-carboxylate (3.00 g), 4-(4-chloromethyl-2-methoxyphenoxymethyl)-2-(2-furyl)-5-methyloxazole (3.00 g), potassium carbonate (2.52 g), and N,N-dimethylformamide (30 ml) was stirred at 80° C. for 8 hours. The reaction mixture was poured into water, and extracted with ethyl acetate. The ethyl acetate layer was washed successively with dilute hydrochloric acid and aqueous sodium chloride solution, dried (MgSO4), and concentrated. The residue was subjected to silica gel column chromatography to obtain ethyl 3-[4-[2-(2-furyl)-5-methyl-4-oxazolylmethoxy]-3-methoxybenzyloxy]-1-(4-phenoxybenzyl)-1H-pyrazole-4-carboxylate (5.30 g, yield: 94%) as colorless crystals from the fraction eluted with ethyl acetate-hexane (1:2, volume ratio). This was recrystallized from ethyl acetate-hexane. Melting point: 98–99° C.

Workup

  1. extractionextracted with ethyl acetate
  2. washThe ethyl acetate layer was washed successively with dilute hydrochloric acid and aqueous sodium chloride solution
  3. dry with materialdried (MgSO4)
  4. concentrationconcentrated

Sources & evidence

ORD record
ord-097a6e87607542d5966acfd23458d6af
Source dataset
uspto-grants-2007_02
Patent number
US07179823B1

Linked notes

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