HCID 86628083, compound → 5-(3,4-Dimethoxy-5-nitrophenyl)-3-(2-(trifluoromethyl)pyridin-3-yl)-1,2,4-triazine

HRID 62002Notes

Reaction equation

HRID 62002 reaction equation
[F:1][C:2]([F:14])([F:13])[C:3]1[N:12]=[CH:11][CH:10]=[CH:9][C:4]=1/[C:5](=[N:7]/[NH2:8])/[NH2:6].[CH3:15][O:16][C:17]1[CH:18]=[C:19]([C:28](=O)[CH:29]=O)[CH:20]=[C:21]([N+:25]([O-:27])=[O:26])[C:22]=1[O:23][CH3:24]>C(O)C>[CH3:15][O:16][C:17]1[CH:18]=[C:19]([C:28]2[N:6]=[C:5]([C:4]3[C:3]([C:2]([F:13])([F:1])[F:14])=[N:12][CH:11]=[CH:10][CH:9]=3)[N:7]=[N:8][CH:29]=2)[CH:20]=[C:21]([N+:25]([O-:27])=[O:26])[C:22]=1[O:23][CH3:24]

Participants

4

Reactant 2

HCID 86628083HCID 86628083, compoundHCID 87543466N'-amino-2-(trifluoromethyl)pyridine-3-carboximidamide

Product 1

HCID 687018815-(3,4-Dimethoxy-5-nitrophenyl)-3-(2-(trifluoromethyl)pyridin-3-yl)-1,2,4-triazine

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

To a stirred solution of (Z)-2-(trifluoromethyl)nicotinohydrazonamide (1.02 g, 5 mmol) in ethanol (30 mL) was added 2-(3,4-dimethoxy-5-nitrophenyl)-2-oxoacetaldehyde (1.19 g, 5 mmol). The reaction mixture was heated to reflux for 5 hours. It was then cooled to room temperature and the solvent was removed by evaporation. The residue was dissolved in dichloromethane (30 mL) and the organic phase was washed with water and dried over anhydrous magnesium sulphate, filtered and evaporated. The crude product was recrystallized from isopropanol to give 5-(3,4-dimethoxy-5-nitrophenyl)-3-(2-(trifluoromethyl)pyridin-3-yl)-1,2,4-triazine, 1.628 g (80%).

Workup

  1. temperatureThe reaction mixture was heated
  2. temperatureto reflux for 5 hours
  3. customthe solvent was removed by evaporation
  4. dissolutionThe residue was dissolved in dichloromethane (30 mL)
  5. washthe organic phase was washed with water
  6. dry with materialdried over anhydrous magnesium sulphate
  7. filtrationfiltered
  8. customevaporated
  9. customThe crude product was recrystallized from isopropanol

Sources & evidence

ORD record
ord-042b72051a7047aea4b617ab5be8c151
Source dataset
uspto-grants-2016_09
Patent number
US09446012B2

Reaction notes

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