HCID 86628083, compound → HCID 67037355, compound

HRID 1401299Notes

Reaction equation

HRID 1401299 reaction equation
[C:1](/[C:5]1[C:6]([C:12]([F:15])([F:14])[F:13])=[N+:7]([O-:11])[CH:8]=[CH:9][CH:10]=1)(=[N:3]\[NH2:4])\[NH2:2].[CH3:16][O:17][C:18]1[CH:19]=[C:20]([C:29](=O)[CH:30]=O)[CH:21]=[C:22]([N+:26]([O-:28])=[O:27])[C:23]=1[O:24][CH3:25]>C(O)C>[CH3:16][O:17][C:18]1[CH:19]=[C:20]([C:29]2[N:2]=[C:1]([C:5]3[C:6]([C:12]([F:13])([F:15])[F:14])=[N+:7]([O-:11])[CH:8]=[CH:9][CH:10]=3)[N:3]=[N:4][CH:30]=2)[CH:21]=[C:22]([N+:26]([O-:28])=[O:27])[C:23]=1[O:24][CH3:25]

Participants

4

Reactant 2

HCID 86628083HCID 86628083, compoundHCID 87244702HCID 87244702, compound

Product 1

HCID 67037355HCID 67037355, compound

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

To a stirred solution of (Z)-3-carbamohydrazonoyl-2-(trifluoromethyl)pyridine 1-oxide (1.10 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, and 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 3-(5-(3,4-dimethoxy-5-nitrophenyl)-1,2,4-triazin-3-yl)-2-(trifluoromethyl)pyridine 1-oxide, 1.69 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-9163b9084419494f9b0ad27bcb4a0fad
Source dataset
uspto-grants-2014_12
Patent number
US08907099B2

Reaction notes

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