Phenylhydrazine → HCID 58072261, compound

HRID 1624738Notes

Reaction equation

HRID 1624738 reaction equation
C[N:2](C)[CH:3]=[CH:4][C:5]([C:7]1[C:12](=[O:13])[CH:11]=[CH:10][N:9]([C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][C:15]=2[N:20]2[CH2:25][CH2:24][O:23][CH2:22][CH2:21]2)[N:8]=1)=O.[C:27]1([NH:33]N)[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=1>CO>[N:20]1([C:15]2[CH:16]=[CH:17][CH:18]=[CH:19][C:14]=2[N:9]2[CH:10]=[CH:11][C:12](=[O:13])[C:7]([C:5]3[N:33]([C:27]4[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=4)[N:2]=[CH:3][CH:4]=3)=[N:8]2)[CH2:21][CH2:22][O:23][CH2:24][CH2:25]1

Participants

4

Reactant 2

HCID 7516PhenylhydrazineHCID 66710450HCID 66710450, compound

Product 1

HCID 58072261HCID 58072261, compoundYield 5.1%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

To a solution of 3-[3-(dimethylamino)prop-2-enoyl]-1-(2-morpholin-4-ylphenyl)pyridazin-4(1H)-one (crude, 870 mg, 2.46 mmol) 20 mL of methanol was added phenylhydrazine (400 mg, 3.69 mmol). The mixture was refluxed for 4 h and concentrated. The residue was dissolved in dichloromethane (20 mL), washed with 1N HCl aqueous solution and brine, dried over Na2SO4, and concentrated under reduced pressure. The residue was purified by prep-HPLC to give 1-(2-morpholin-4-ylphenyl)-3-(1-phenyl-1H-pyrazol-5-yl)pyridazin-4(1H)-one (50 mg, 5% for two steps) as a yellow solid.

Workup

  1. temperatureThe mixture was refluxed for 4 h
  2. concentrationconcentrated
  3. dissolutionThe residue was dissolved in dichloromethane (20 mL)
  4. washwashed with 1N HCl aqueous solution and brine
  5. dry with materialdried over Na2SO4
  6. concentrationconcentrated under reduced pressure
  7. customThe residue was purified by prep-HPLC

Sources & evidence

ORD record
ord-f2bc5a8d3f3e4f76bc1f9652993c57c0
Source dataset
uspto-grants-2014_07
Patent number
US08778944B2

Reaction notes

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