Hydrochloric Acid → N-ethyl-3-(2-chloro-6-fluoro-4-trifluoromethylphenyloxy)-5-methylpyrazole-1-carbothioamide

HRID 644897ノート

反応式

HRID 644897 の反応式
C(=O)([O-])[O-].[K+].[K+].[CH2:7]([N:9]=[C:10]=[S:11])[CH3:8].[Cl:12][C:13]1[CH:18]=[C:17]([C:19]([F:22])([F:21])[F:20])[CH:16]=[C:15]([F:23])[C:14]=1[O:24][C:25]1[CH:29]=[C:28]([CH3:30])[NH:27][N:26]=1.Cl>C(OCC)(=O)C>[CH2:7]([NH:9][C:10]([N:27]1[C:28]([CH3:30])=[CH:29][C:25]([O:24][C:14]2[C:15]([F:23])=[CH:16][C:17]([C:19]([F:22])([F:20])[F:21])=[CH:18][C:13]=2[Cl:12])=[N:26]1)=[S:11])[CH3:8]

参加物

6

反応物 4

HCID 313Hydrochloric AcidHCID 10966Ethyl isothiocyanateHCID 11430Potassium CarbonateHCID 178624283-(2-Chloro-6-fluoro-4-trifluoromethylphenyloxy)-5-methylpyrazole

生成物 1

HCID 17862390N-ethyl-3-(2-chloro-6-fluoro-4-trifluoromethylphenyloxy)-5-methylpyrazole-1-carbothioamide収率 9.4%

試薬・触媒・溶媒 1

HCID 8857Ethyl Acetate溶媒

実験手順

Potassium carbonate (0.22 g, 1.6 mmol) and ethyl isothiocyanate (0.13 g, 1.8 mmol) were added to a solution of 3-(2-chloro-6-fluoro-4-trifluoromethylphenyloxy)-5-methylpyrazole (0.44 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 white solid of N-ethyl-3-(2-chloro-6-fluoro-4-trifluoromethylphenyloxy)-5-methylpyrazole-1-carbothioamide (0.05 g, yield: 9.4%). mp: 114-115° C.; 1H-NMR (CDCl3, TMS, ppm): δ 1.25 (t, J=7.3 Hz, 3H), 2.81 (d, J=0.6 Hz, 3H), 3.67 (dq, J=5.7 and 7.3 Hz, 2H), 5.84 (q, J=0.6 Hz, 1H), 7.41 (dd, JHF=2.1 and 9.4 Hz, 1H), 7.62 (s, 1H), 8.54 (br s, 1H).

後処理

  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)

出典と根拠

ORDレコード
ord-7e79aa6df1294f44be847ee75cae9f9d
出典データセット
uspto-grants-2010_04
特許番号
US07700786B2

反応ノート

読み込み中…