Dimethylformamide → HCID 23025049, compound

HRID 350166Notes

Reaction equation

[OH:1][C:2]1[C:6]([CH2:7][CH2:8][C:9]([O:11][CH2:12][CH3:13])=[O:10])=[CH:5][N:4]([CH2:14][C:15]2[CH:20]=[CH:19][C:18]([O:21][CH2:22][C:23]3[N:24]=[C:25]([C:29]4[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=4)[O:26][C:27]=3[CH3:28])=[CH:17][CH:16]=2)[N:3]=1.C(=O)([O-])[O-].[K+].[K+].[CH2:41](Br)[C:42]1[CH:47]=[CH:46][CH:45]=[CH:44][CH:43]=1.CN(C)C=O>O>[CH2:41]([O:1][C:2]1[C:6]([CH2:7][CH2:8][C:9]([O:11][CH2:12][CH3:13])=[O:10])=[CH:5][N:4]([CH2:14][C:15]2[CH:16]=[CH:17][C:18]([O:21][CH2:22][C:23]3[N:24]=[C:25]([C:29]4[CH:30]=[CH:31][CH:32]=[CH:33][CH:34]=4)[O:26][C:27]=3[CH3:28])=[CH:19][CH:20]=2)[N:3]=1)[C:42]1[CH:47]=[CH:46][CH:45]=[CH:44][CH:43]=1

Participants

Conditions

Temperature: 80 °C

Procedure

A mixture of ethyl 3-[3-hydroxy-1-[4-(5-methyl-2-phenyl-4-oxazolylmethoxy)benzyl]-1H-pyrazol-4-yl]propionate (500 mg), potassium carbonate (165 mg), benzyl bromide (205 mg), and N,N-dimethylformamide (10 ml) was stirred at 80° C. for one hour. The reaction mixture was poured into water, which was extracted with ethyl acetate. The ethyl acetate layer was washed with water, dried (MgSO4), and concentrated. The residue was subjected to silica gel column chromatography, and ethyl 3-[3-benzyloxy-1-[4-(5-methyl-2-phenyl-4-oxazolylmethoxy)benzyl]-1H-pyrazol-4-yl]propionate (385 mg, yield: 64%) was obtained as a colorless oily substance from the fraction eluted with ethyl acetate-hexane (1:2, volume ratio).

Workup

extractionwas extracted with ethyl acetate
washThe ethyl acetate layer was washed with water
dry with materialdried (MgSO4)
concentrationconcentrated

Sources & evidence

ORD record: ord-0cdc5517167546259099c83a1a6677b1
Source dataset: uspto-grants-2007_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07179823B1

Reaction notes

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