Triethylamine → N-(3-Cyano-4-isobutoxyphenyl)-1-(4-fluorophenyl)-3-methylpyrazole-4-carboxamide

HRID 1744556Notes

Reaction equation

HRID 1744556 reaction equation
[F:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]2[CH:12]=[C:11]([C:13]([OH:15])=O)[C:10]([CH3:16])=[N:9]2)=[CH:4][CH:3]=1.[NH2:17][C:18]1[CH:19]=[CH:20][C:21]([O:26][CH2:27][CH:28]([CH3:30])[CH3:29])=[C:22]([CH:25]=1)[C:23]#[N:24].C(N(CC)CC)C.P(C#N)(OCC)(OCC)=O>O.CN(C)C=O>[C:23]([C:22]1[CH:25]=[C:18]([NH:17][C:13]([C:11]2[C:10]([CH3:16])=[N:9][N:8]([C:5]3[CH:4]=[CH:3][C:2]([F:1])=[CH:7][CH:6]=3)[CH:12]=2)=[O:15])[CH:19]=[CH:20][C:21]=1[O:26][CH2:27][CH:28]([CH3:29])[CH3:30])#[N:24]

Participants

7

Reactant 4

HCID 8471TriethylamineHCID 76257Diethyl cyanophosphonateHCID 193660285-Amino-2-isobutoxybenzonitrileHCID 222280571-(4-fluorophenyl)-3-methyl-1H-pyrazole-4-carboxylic acid

Product 1

HCID 22228207N-(3-Cyano-4-isobutoxyphenyl)-1-(4-fluorophenyl)-3-methylpyrazole-4-carboxamideYield 19.4%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

1-(4-Fluorophenyl)-3-methylpyrazole-4-carboxylic acid (0.6 g), 5-amino-2-isobutoxybenzonitrile (0.5 g), triethylamine (0.8 g) and diethyl cyanophosphate (0.7 g) were added to dimethylformamide (8 ml) and the mixture was stirred at room temperature for 1 h. The reaction mixture was added into water and extracted with ethyl acetate. The organic layer was washed with saturated brine and dried over anhydrous magnesium sulfate, after which the solvent was evaporated under reduced pressure. n-Hexane was added to the residue to allow crystallization. The crystals were recrystallized from hydrous ethanol to give the title compound (0.2 g), melting point: 179–180° C.

Workup

  1. extractionextracted with ethyl acetate
  2. washThe organic layer was washed with saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. customafter which the solvent was evaporated under reduced pressure
  5. additionn-Hexane was added to the residue
  6. customcrystallization
  7. customThe crystals were recrystallized from hydrous ethanol

Sources & evidence

ORD record
ord-6fa53370f0a24380a8a5e446d82b50dc
Source dataset
uspto-grants-2006_03
Patent number
US07015218B1

Reaction notes

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