Water → HCID 58072214, compound

HRID 1895305Notes

Reaction equation

HRID 1895305 reaction equation
[C:1]1([C:7]2[C:11]([C:12]3[C:17](=[O:18])[CH:16]=[CH:15][N:14]([C:19]4[CH:24]=[CH:23][CH:22]=[C:21]([C:25]([F:28])([F:27])[F:26])[CH:20]=4)[N:13]=3)=[CH:10][NH:9][N:8]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.IC.[C:31]([O-])([O-])=O.[K+].[K+].O>CN(C=O)C>[CH3:31][N:8]1[C:7]([C:1]2[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=2)=[C:11]([C:12]2[C:17](=[O:18])[CH:16]=[CH:15][N:14]([C:19]3[CH:24]=[CH:23][CH:22]=[C:21]([C:25]([F:26])([F:27])[F:28])[CH:20]=3)[N:13]=2)[CH:10]=[N:9]1

Participants

6

Reactant 4

HCID 962WaterHCID 6328Methyl iodideHCID 11430Potassium CarbonateHCID 178516401HCID 178516401, compound

Product 1

HCID 58072214HCID 58072214, compoundYield 30%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A suspension of 3-(3-phenyl-1H-pyrazol-4-yl)-1-[3-(trifluoromethyl)phenyl]pyridazin-4(1H)-one (325 mg, 0.85 mmol), iodomethane (0.081 mL, 1.3 mmol), and K2CO3 (235 mg, 1.7 mmol) in DMF (3 mL) was stirred overnight at room temperature. The reaction mixture was poured into water and extracted with AcOEt. The extract was washed with water and brine, dried over MgSO4, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography eluting with AcOEt and recrystallized from hexane/AcOEt to give 3-(1-methyl-5-phenyl-1H-pyrazol-4-yl)-1-[3-(trifluoromethyl)phenyl]pyridazin-4(1H)-one (100 mg, 30% yield) as a white solid: mp 193-195° C.; 1H NMR (300 MHz, CDCl3): δ ppm 3.74 (3H, s), 6.61 (1H, d, J=7.9 Hz), 6.91 (1H, dd, J=2.3, 8.3 Hz), 7.25 (1H, s), 7.33-7.40 (3H, m), 7.45-7.52 (4H, m), 8.12 (1H, d, J=7.9 Hz), 8.67 (1H, s). LC-MS (ESI) m/z 397 [M+H]+. Anal. Calcd for C21H15F3N4O: C, 63.63; H, 3.81; N, 14.14. Found: C, 63.56; H, 3.88; N, 14.09.

Workup

  1. extractionextracted with AcOEt
  2. washThe extract was washed with water and brine
  3. dry with materialdried over MgSO4
  4. concentrationconcentrated under reduced pressure
  5. customThe residue was purified by silica gel column chromatography
  6. washeluting with AcOEt
  7. customrecrystallized from hexane/AcOEt

Sources & evidence

ORD record
ord-d8c158308fef401e9a76ba0bc81bf7b7
Source dataset
uspto-grants-2013_08
Patent number
US08513251B2

Reaction notes

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