Methylamine → HCID 58072242, compound

HRID 1624779Notes

Reaction equation

HRID 1624779 reaction equation
[O:1]=[C:2]1[CH:7]=[CH:6][N:5]([C:8]2[CH:13]=[CH:12][CH:11]=[C:10]([C:14]([F:17])([F:16])[F:15])[CH:9]=2)[N:4]=[C:3]1[CH:18]=O.[CH3:20][NH2:21].[CH2:22]=[N:23][CH:24](S(C1C=CC(C)=CC=1)(=O)=O)[C:25]1[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=1.C([O-])([O-])=O.[K+].[K+]>CN(C=O)C.O>[CH3:20][N:21]1[C:18]([C:3]2[C:2](=[O:1])[CH:7]=[CH:6][N:5]([C:8]3[CH:13]=[CH:12][CH:11]=[C:10]([C:14]([F:17])([F:16])[F:15])[CH:9]=3)[N:4]=2)=[C:24]([C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=2)[N:23]=[CH:22]1

Participants

7

Reactant 4

HCID 6329MethylamineHCID 11430Potassium CarbonateHCID 58072465HCID 58072465, compoundHCID 66710954HCID 66710954, compound

Product 1

HCID 58072242HCID 58072242, compoundYield 76.4%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

A mixture of 4-oxo-1-[3-(trifluoromethyl)phenyl]-1,4-dihydropyridazine-3-carbaldehyde (129 mg, 0.479 mmol) and MeNH2 (40% aqueous solution, 0.050 mL, 0.575 mmol) in DMF (3.5 mL) was stirred at room temperature for 90 min. To the mixture were added N-methylidene-1-[(4-methylphenyl)sulfonyl]-1-phenylmethanamine (131 mg, 0.479 mmol) and K2CO3 (66.2 mg, 0.479 mmol) at room temperature. The mixture was stirred at room temperature for 27 h. The mixture was diluted with water, extracted with AcOEt, washed with NaHCO3 aqueous solution, dried over Na2SO4, filtered, concentrated in vacuo, purified by column chromatography on basic silica gel (hexane/AcOEt=40/60 to 0/100 and AcOEt/MeOH=100/0 to 70/30) and recrystallized with AcOEt/hexane to yield the title compound (145 mg, 76% yield) as a pale yellow solid: mp 214-216° C. 1H NMR (DMSO-d6, 300 MHz): δ ppm 3.60 (3H, s), 6.74 (1H, d, J=8.0 Hz), 7.15-7.32 (3H, m), 7.45-7.53 (2H, m), 7.71-7.89 (4H, m), 7.91-7.98 (1H, m), 9.04 (1H, d, J=8.0 Hz). Anal. Calcd for C21H15F3N4O: C, 63.63; H, 3.81; N, 14.14. Found: C, 63.50; H, 3.89; N, 14.04.

Workup

  1. stirringThe mixture was stirred at room temperature for 27 h
  2. extractionextracted with AcOEt
  3. washwashed with NaHCO3 aqueous solution
  4. dry with materialdried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. custompurified by column chromatography on basic silica gel (hexane/AcOEt=40/60 to 0/100 and AcOEt/MeOH=100/0 to 70/30)
  8. customrecrystallized with AcOEt/hexane

Sources & evidence

ORD record
ord-fca6e3d8dedd410f9082399cf0820cc9
Source dataset
uspto-grants-2014_07
Patent number
US08778944B2

Reaction notes

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