Water → [1-ethyl-5-(4-methoxyphenoxy)-3-methyl-1H-pyrazol-4-yl]-phenyl-methanone

HRID 350878Notes

Reaction equation

Cl[C:2]1[N:6]([CH2:7][CH3:8])[N:5]=[C:4]([CH3:9])[C:3]=1[C:10]([C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1)=[O:11].[CH3:18][O:19][C:20]1[CH:25]=[CH:24][C:23]([OH:26])=[CH:22][CH:21]=1.[H-].[Na+].O>CN(C)C=O>[CH2:7]([N:6]1[C:2]([O:26][C:23]2[CH:24]=[CH:25][C:20]([O:19][CH3:18])=[CH:21][CH:22]=2)=[C:3]([C:10]([C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)=[O:11])[C:4]([CH3:9])=[N:5]1)[CH3:8]

Participants

Conditions

Temperature: 110 °C

Procedure

A mixture of 129 mg of (5-chloro-1-ethyl-3-methyl-1H-pyrazol-4-yl)-phenyl-methanone, 141 mg of 4-methoxyphenol and 33 mg of sodium hydride (60% in mineral oil) in 3 ml of anhydrous N,N-dimethylformamide was stirred under nitrogen at 110° C. for 5 h. Water (8 ml) was added and the mixture was extracted three times with 10 ml of dichloromethane. The combined extracts were dried over magnesium sulphate, filtered and evaporated. The residue was purified by flash chromatography on silica gel using ethyl acetate/petroleum ether (bp 40–60° C.) (1:3) for the elution to give 100 mg of [1-ethyl-5-(4-methoxyphenoxy)-3-methyl-1H-pyrazol-4-yl]-phenyl-methanone as a yellow oil. Mass spectrum (ES) m/z 337 [M]+, 378 [M+H+CH3CN]+.

Workup

extractionthe mixture was extracted three times with 10 ml of dichloromethane
dry with materialThe combined extracts were dried over magnesium sulphate
filtrationfiltered
customevaporated
customThe residue was purified by flash chromatography on silica gel
washfor the elution

Sources & evidence

ORD record: ord-831b5cf3849348208cc7b3ba35c5c5d1
Source dataset: uspto-grants-2007_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07183296B2

Reaction notes

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