Hydrochloric Acid → HCID 59263964, compound

HRID 644889Notes

Reaction equation

HRID 644889 reaction equation
C(=O)([O-])[O-].[K+].[K+].[CH2:7]([N:9]=[C:10]=[O:11])[CH3:8].[CH:12]1([C:15]2[NH:19][N:18]=[C:17]([O:20][C:21]3[C:26]([Cl:27])=[CH:25][C:24]([C:28]([F:31])([F:30])[F:29])=[CH:23][C:22]=3[Cl:32])[CH:16]=2)[CH2:14][CH2:13]1.Cl>C(OCC)(=O)C>[CH2:7]([NH:9][C:10]([N:19]1[C:15]([CH:12]2[CH2:13][CH2:14]2)=[CH:16][C:17]([O:20][C:21]2[C:26]([Cl:27])=[CH:25][C:24]([C:28]([F:31])([F:29])[F:30])=[CH:23][C:22]=2[Cl:32])=[N:18]1)=[O:11])[CH3:8]

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 8022Ethyl isocyanateHCID 11430Potassium CarbonateHCID 17862342HCID 17862342, compound

Product 1

HCID 59263964HCID 59263964, compoundYield 88.2%

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent

Procedure

Potassium carbonate (0.23 g, 1.7 mmol) and ethyl isocyanate (0.11 g, 1.5 mmol) were added to a solution of 5-cyclopropyl-3-(2,6-dichloro-4-trifluoromethylphenyloxy)pyrazole (0.51 g, 1.5 mmol) in ethyl acetate (10 ml), and the mixture was stirred at room temperature overnight. After completion of the reaction, the reaction mixture was poured into 2N hydrochloric acid and extracted with ethyl acetate (10 ml×3). An organic layer was washed with water, dried over anhydrous magnesium sulfate and filtered to remove a desiccant, and the solvent was distilled off from the filtrate under reduced pressure. The resultant crude product was purified with a silica gel column (ethyl acetate/hexane=1/10), to give a colorless viscous substance of N-ethyl-5-cyclopropyl-3-(2,6-dichloro-4-trifluoromethylpheyloxy)pyrazole-1-carboxamide (0.54 g, yield: 88.2%). 1H-NMR (CDCl3, TMS, ppm): δ 0.70 (m, 2H), 1.07 (m, 2H), 1.20 (t, J=7.3 Hz, 3H), 2.81 (m, 1H), 3.36 (dq, J=6.0 and 7.3 Hz, 2H), 5.45 (s, 1H), 6.60-6.85 (m, 1H), 7.66 (s, 2H).

Workup

  1. customAfter completion of the reaction
  2. extractionextracted with ethyl acetate (10 ml×3)
  3. washAn organic layer was washed with water
  4. dry with materialdried over anhydrous magnesium sulfate
  5. filtrationfiltered
  6. customto remove a desiccant, and the solvent
  7. distillationwas distilled off from the filtrate under reduced pressure
  8. customThe resultant crude product was purified with a silica gel column (ethyl acetate/hexane=1/10)

Sources & evidence

ORD record
ord-cc9f4f15d9584cb281f752e800a9baa9
Source dataset
uspto-grants-2010_04
Patent number
US07700786B2

Reaction notes

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