Water → 5-[3-(2,6-dichloropyridin-4-yl)-3-(trifluoromethyl)-3,4-dihydro-2H-pyrrol-5-yl]-2-(1H-1,2,4-triazol-1-yl)benzonitrile

HRID 2172530Notes

Reaction equation

HRID 2172530 reaction equation
[C:1]([C:3]1[CH:4]=[C:5]([C:14](SC)=[N:15][CH2:16][Si](C)(C)C)[CH:6]=[CH:7][C:8]=1[N:9]1[CH:13]=[N:12][CH:11]=[N:10]1)#[N:2].[Cl:23][C:24]1[CH:29]=[C:28]([C:30]([C:32]([F:35])([F:34])[F:33])=[CH2:31])[CH:27]=[C:26]([Cl:36])[N:25]=1.[F-].C([N+](CCCC)(CCCC)CCCC)CCC.O>C1COCC1>[Cl:23][C:24]1[CH:29]=[C:28]([C:30]2([C:32]([F:33])([F:34])[F:35])[CH2:31][C:14]([C:5]3[CH:6]=[CH:7][C:8]([N:9]4[CH:13]=[N:12][CH:11]=[N:10]4)=[C:3]([CH:4]=3)[C:1]#[N:2])=[N:15][CH2:16]2)[CH:27]=[C:26]([Cl:36])[N:25]=1

Participants

6

Reactant 4

HCID 962WaterHCID 2724141Tetrabutylammonium FluorideHCID 66820051methyl 3-cyano-4-(1H-1,2,4-triazol-1-yl)-N-[(trimethylsilyl)methyl]benzenecarbimidothioateHCID 86664620Pyridine, 2,6-dichloro-4-[1-(trifluoromethyl)ethenyl]-

Product 1

HCID 497871395-[3-(2,6-dichloropyridin-4-yl)-3-(trifluoromethyl)-3,4-dihydro-2H-pyrrol-5-yl]-2-(1H-1,2,4-triazol-1-yl)benzonitrileYield 46%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To the crude solution of methyl 3-cyano-4-(1H-1,2,4-triazol-1-yl)-N-[(trimethylsilyl)methyl]benzenecarbimidothioate (Japanese patent application JP2008-143120) was added 2,6-dichloro-4-(3,3,3-trifluoroprop-1-en-2-yl)pyridine (0.15 g) and the resultant mixture was cooled to −10° C. Additionally, a solution of tetrabutylammonium fluoride (0.70 mL of 1.0 M in THF) in THF was added over 10 minutes under argon atmosphere. The reaction mixture was stirred for 30 minutes at the same temperature and returned to room temperature gradually, and then stirred 3 hours. Water was added to the reaction liquor, and aqueous layer was extracted with ethyl acetate. The combined organic layers were washed with a saturated aqueous brine, and subsequently dried over magnesium sulfate. After filtering the reaction mixture, the solvent was distilled off under reduced pressure, and the resulting mixture was purified by silica gel chromatography, to obtain 5-[3-(2,6-dichloropyridin-4-yl)-3-(trifluoromethyl)-3,4-dihydro-2H-pyrrol-5-yl]-2-(1H-1,2,4-triazol-1-yl)benzonitrile (0.14 g) at a yield of 46%.

Workup

  1. customreturned to room temperature
  2. stirringstirred 3 hours
  3. extractionwas extracted with ethyl acetate
  4. washThe combined organic layers were washed with a saturated aqueous brine
  5. dry with materialsubsequently dried over magnesium sulfate
  6. filtrationAfter filtering the reaction mixture
  7. distillationthe solvent was distilled off under reduced pressure
  8. customthe resulting mixture was purified by silica gel chromatography

Sources & evidence

ORD record
ord-07a9c8c0fe2840a385a6c06973640899
Source dataset
uspto-grants-2015_06
Patent number
US09055749B2

Reaction notes

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