Methylamine → 2-ETHYL-5,7-DIMETHYL-3-(4-{2-[METHYL({[(4-METHYLPHENYL)SULFONYL]AMINO}CARBONYL)AMINO]ETHYL}PHENYL)-3H-IMIDAZO[4,5-b]PYRIDINE

HRID 50421

Reaction equation

HRID 50421 reaction equation
[CH2:1]([C:3]1[N:13]([C:14]2[CH:19]=[CH:18][C:17]([CH2:20][CH2:21][NH:22][C:23]([NH:25][S:26]([C:29]3[CH:34]=[CH:33][C:32]([CH3:35])=[CH:31][CH:30]=3)(=[O:28])=[O:27])=[O:24])=[CH:16][CH:15]=2)[C:6]2=[N:7][C:8]([CH3:12])=[CH:9][C:10]([CH3:11])=[C:5]2[N:4]=1)[CH3:2].[CH3:36]N>O>[CH2:1]([C:3]1[N:13]([C:14]2[CH:15]=[CH:16][C:17]([CH2:20][CH2:21][N:22]([CH3:36])[C:23]([NH:25][S:26]([C:29]3[CH:34]=[CH:33][C:32]([CH3:35])=[CH:31][CH:30]=3)(=[O:28])=[O:27])=[O:24])=[CH:18][CH:19]=2)[C:6]2=[N:7][C:8]([CH3:12])=[CH:9][C:10]([CH3:11])=[C:5]2[N:4]=1)[CH3:2]

Participants

4

Reactant 2

HCID 6329MethylamineHCID 99353672-ETHYL-5,7-DIMETHYL-3-(4-{2-[({[(4-METHYLPHENYL)SULFONYL]AMINO}CARBONYL)AMINO]ETHYL}PHENYL)-3H-IMIDAZO[4,5-b]PYRIDINE

Product 1

HCID 218757652-ETHYL-5,7-DIMETHYL-3-(4-{2-[METHYL({[(4-METHYLPHENYL)SULFONYL]AMINO}CARBONYL)AMINO]ETHYL}PHENYL)-3H-IMIDAZO[4,5-b]PYRIDINEYield 85%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
130 °C

Procedure

A mixture of 3-[4-(2-chloroethyl)phenyl]-2-ethyl-5,7-dimethyl-3H-imidazo[4,5-b]pyridine (step 7 of Example 1, 627 mg, 9.0 mmol), a solution of methylamine (40% in methanol, 6 mL) and water (6 mL) was placed in a sealed tube and heated overnight at 130° C. The reaction mixture was partitioned between dichloromethane (50 mL) and water (50 mL). The organic phase was separated and the aqueous phase was extracted with dichloromethane (50 mL). The combined organic extracts were washed with brine (50 mL) and dried (Na2SO4). After removal of solvent, the crude product was purified by flash column chromatography on silica gel eluting with dichloromethane/methanol (5:1) to afford 523 mg (85%) of the title compound as white solids: 1H-NMR (CDCl3) δ 7.41 (2H, d, J=8.3 Hz), 7.31 (2H, d, J=8.3 Hz), 6.90 (1H, s), 4.73 (1H, br.s), 2.93 (4H, s), 2.82 (2H, q, J=7.5 Hz), 2.65 (3H, s), 2.51 (3H, s), 2.49 (3H, s), 1.28 (3H, t, J=7.5 Hz).

Workup

  1. customThe reaction mixture was partitioned between dichloromethane (50 mL) and water (50 mL)
  2. customThe organic phase was separated
  3. extractionthe aqueous phase was extracted with dichloromethane (50 mL)
  4. washThe combined organic extracts were washed with brine (50 mL)
  5. dry with materialdried (Na2SO4)
  6. customAfter removal of solvent
  7. customthe crude product was purified by flash column chromatography on silica gel eluting with dichloromethane/methanol (5:1)

Sources & evidence

ORD record
ord-4e25a58561024da0bf81c694df1d9993
Source dataset
uspto-grants-2004_03
Patent number
US06710054B2

Linked notes

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