Dimethylformamide → ethyl 3-[3-methoxy-4-(5-methyl-2-phenyl-4-oxazolylmethoxy)benzyloxy]-1-(4-phenoxybenzyl)-1H-pyrazole-4-carboxylate

HRID 350310

Reaction equation

HRID 350310 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:47]=[CH:46][C:31]([O:32][CH2:33][C:34]2[N:35]=[C:36]([C:40]3[CH:45]=[CH:44][CH:43]=[CH:42][CH:41]=3)[O:37][C:38]=2[CH3:39])=[C:30]([O:48][CH3:49])[CH:29]=1.C(=O)([O-])[O-].[K+].[K+].CN(C)C=O>O>[CH3:49][O:48][C:30]1[CH:29]=[C:28]([CH:47]=[CH:46][C:31]=1[O:32][CH2:33][C:34]1[N:35]=[C:36]([C:40]2[CH:45]=[CH:44][CH:43]=[CH:42][CH:41]=2)[O:37][C:38]=1[CH3:39])[CH2:27][O: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

Participants

6

Reactant 4

HCID 6228DimethylformamideHCID 11430Potassium CarbonateHCID 223446094-(4-Chloromethyl-2-methoxyphenoxymethyl)-5-methyl-2-phenyloxazoleHCID 178469747HCID 178469747, compound

Product 1

HCID 23024786ethyl 3-[3-methoxy-4-(5-methyl-2-phenyl-4-oxazolylmethoxy)benzyloxy]-1-(4-phenoxybenzyl)-1H-pyrazole-4-carboxylateYield 95%

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)-5-methyl-2-phenyloxazole (3.06 g), potassium carbonate (2.50 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-[3-methoxy-4-(5-methyl-2-phenyl-4-oxazolylmethoxy)benzyloxy]-1-(4-phenoxybenzyl)-1H-pyrazole-4-carboxylate (5.43 g, yield: 95%) as colorless crystals from the fraction eluted with ethyl acetate-hexane (1:2, volume ratio). This was recrystallized from acetone-hexane. Melting point: 127–128° 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-05dccb700c1447b7b3c38b55a3380b37
Source dataset
uspto-grants-2007_02
Patent number
US07179823B1

Linked notes

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