Sulfuryl chloride → HCID 17862335, compound

HRID 644916Notes

Reaction equation

HRID 644916 reaction equation
S(Cl)([Cl:4])(=O)=O.[CH2:6]([NH:8][C:9]([N:11]1[C:15]([CH3:16])=[CH:14][C:13]([O:17][C:18]2[C:23]([Cl:24])=[CH:22][C:21]([C:25]([F:28])([F:27])[F:26])=[CH:20][N:19]=2)=[N:12]1)=[O:10])[CH3:7]>C(O)(=O)C>[CH2:6]([NH:8][C:9]([N:11]1[C:15]([CH3:16])=[C:14]([Cl:4])[C:13]([O:17][C:18]2[C:23]([Cl:24])=[CH:22][C:21]([C:25]([F:26])([F:27])[F:28])=[CH:20][N:19]=2)=[N:12]1)=[O:10])[CH3:7]

Participants

4

Reactant 2

HCID 24648Sulfuryl chlorideHCID 17862339HCID 17862339, compound

Product 1

HCID 17862335HCID 17862335, compoundYield 92.1%

Reagents, catalysts & solvents 1

HCID 176Acetic AcidSolvent

Procedure

Sulfuryl chloride (0.16 g, 1.2 mmol) was added to a solution of N-ethyl-3-(3-chloro-5-trifluoromethylpyridin-2-yloxy)-5-methylpyrazole-1-carboxamide (0.35 g, 1.0 mmol) in acetic acid (5 ml), and the mixture was stirred at room temperature for 4 hours. After completion of the reaction, the reaction mixture was poured into ice water 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. 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 white solid of N-ethyl-4-chloro-3-(3-chloro-5-trifluoromethylpyridin-2-yloxy)-5-methylpyrazole-1-carboxamide (0.35 g, yield: 92.1%). mp: 111-112° C.; 1H-NMR (CDCl3, TMS, ppm): δ 1.23 (t, J=7.3 Hz, 3H), 2.66 (s, 3H), 3.41 (dq, J=5.8 and 7.3 Hz, 2H), 6.85-7.10 (m, 1H), 8.03 (d, J=2.0 Hz, 1H), 8.31 (m, 1H).

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
  7. distillationThe solvent was 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-2b06c10156ba49df95dd51f6a2272461
Source dataset
uspto-grants-2010_04
Patent number
US07700786B2

Reaction notes

Loading…