Thionyl Chloride → 1-(2,6-Dichloro-4-trifluoromethylphenyl)-4-trifluoromethylsulfenyl-5-(pyrazin-2-ylmethylamino)pyrazole-3-carbonitrile

HRID 22867노트

반응식

HRID 22867 반응식
[F:1][C:2]([F:7])([F:6])[S:3]([O-])=O.[K+].C1(C)C=CC(S(O)(=O)=O)=CC=1.CNC.O.C1(C)C=CC(S(O)(=O)=O)=CC=1.S(Cl)(Cl)=O.[Cl:39][C:40]1[CH:45]=[C:44]([C:46]([F:49])([F:48])[F:47])[CH:43]=[C:42]([Cl:50])[C:41]=1[N:51]1[C:55]([NH:56][CH2:57][C:58]2[CH:63]=[N:62][CH:61]=[CH:60][N:59]=2)=[CH:54][C:53]([C:64]#[N:65])=[N:52]1.C(=O)([O-])O.[Na+]>ClCCCl>[Cl:50][C:42]1[CH:43]=[C:44]([C:46]([F:47])([F:48])[F:49])[CH:45]=[C:40]([Cl:39])[C:41]=1[N:51]1[C:55]([NH:56][CH2:57][C:58]2[CH:63]=[N:62][CH:61]=[CH:60][N:59]=2)=[C:54]([S:3][C:2]([F:7])([F:6])[F:1])[C:53]([C:64]#[N:65])=[N:52]1

참가 물질

8

반응물 6

HCID 24386Thionyl ChlorideHCID 516892Sodium BicarbonateHCID 521998p-Toluenesulfonic acid monohydrateHCID 2733643Potassium trifluoromethanesulphinateHCID 112007821-(2,6-Dichloro-4-trifluoromethylphenyl)-5-(pyrazin-2-ylmethylamino)pyrazole-3-carbonitrileHCID 12199009Dimethylamine p-toluenesulfonate

생성물 1

HCID 111798181-(2,6-Dichloro-4-trifluoromethylphenyl)-4-trifluoromethylsulfenyl-5-(pyrazin-2-ylmethylamino)pyrazole-3-carbonitrile수율 38%

시약·촉매·용매 1

HCID 111,2-Dichloroethane용매

실험 절차

Into 5.0 ml of 1,2-dichloroethane were suspended 1.725 g (10.0 mmol) of potassium trifluoromethanesulfinate, 895 mg (4.1 mmol) of dimethylamine p-toluenesulfonate, 951 mg (5.0 mmol) of p-toluenesulfonic acid monohydrate, and then 1.506 g (12.6 mmol) of thionyl chloride was added under ice-cooling. After 3 hours of stirring at room temperature, 1.03 g (2.5 mmol) of 1-(2,6-dichloro-4-trifluoromethylphenyl)-5-(pyrazin-2-ylmethylamino)pyrazole-3-carbonitrile was added thereto, and the mixture was warmed to 40° C. and stirred for 5 hours. The reaction mixture was neutralized with saturated aqueous sodium hydrogen carbonate solution and then extracted with dichloromethane. The organic layer was dried over anhydrous magnesium sulfate. The solvent was removed by distillation under reduced pressure and the resulting oil was purified to isolate 487 mg (yield 38%) of 1-(2,6-dichloro-4-trifluoromethylphenyl)-4-trifluoromethylsulfenyl-5-(pyrazin-2-ylmethylamino)pyrazole-3-carbonitrile.

후처리

  1. temperaturecooling
  2. temperaturethe mixture was warmed to 40° C.
  3. stirringstirred for 5 hours
  4. extractionextracted with dichloromethane
  5. dry with materialThe organic layer was dried over anhydrous magnesium sulfate
  6. customThe solvent was removed by distillation under reduced pressure
  7. customthe resulting oil was purified

출처 및 근거

ORD 기록
ord-9f5dacb5fb6147e4a36b33c4f4d15450
출처 데이터셋
uspto-grants-2005_02
특허 번호
US06849633B2

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