Triethylamine → 5-fluoro-1,3-dimethyl-N-[2-(3-methylbutyl)phenyl]-1H-pyrazole-4-carboxamide
Reaction equation
[CH3:1][CH:2]([CH3:12])[CH2:3][CH2:4][C:5]1[CH:10]=[CH:9][CH:8]=[CH:7][C:6]=1[NH2:11].[F:13][C:14]1[N:18]([CH3:19])[N:17]=[C:16]([CH3:20])[C:15]=1[C:21](Cl)=[O:22].C(N(CC)CC)C>O1CCCC1>[F:13][C:14]1[N:18]([CH3:19])[N:17]=[C:16]([CH3:20])[C:15]=1[C:21]([NH:11][C:6]1[CH:7]=[CH:8][CH:9]=[CH:10][C:5]=1[CH2:4][CH2:3][CH:2]([CH3:12])[CH3:1])=[O:22]Participants
5
Reactant 3
Product 1
Reagents, catalysts & solvents 1
Conditions
- Temperature
- 60 °C
Procedure
326.5 mg (2.0 mmol) of [2-(3-methylbutyl)phenyl]amine (III-1) are added to a solution comprising 388.5 mg (2.2 mmol) of 5-fluoro-1,3-dimethyl-1H-pyrazole-4-carbonyl chloride and 0.45 ml (3.2 mmol) of triethylamine in 20 ml of tetrahydrofuran. The reaction solution is stirred at 60° C. for 90 min, filtered through silica gel and concentrated. Column chromatography (cyclohexane/ethyl acetate gradient) gives 592 mg (98% of theory) of 5-fluoro-1,3-dimethyl-N-[2-(3-methylbutyl)phenyl]-1H-pyrazole-4-carboxamide of logP (pH 2.3)=3.12.
Workup
- filtrationfiltered through silica gel
- concentrationconcentrated
Sources & evidence
- ORD record
- ord-4d645840303e48279aaa74d4b9c832c4
- Source dataset
- uspto-grants-2011_02
- Patent number
- US07879760B2
Reaction notes
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