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

HRID 858381Notes

Reaction equation

HRID 858381 reaction equation
[CH2:1]([C:3]1[N:13]([C:14]2[CH:19]=[CH:18][C:17]([CH2:20][CH2:21][NH2:22])=[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].[C:23]1([CH3:35])[CH:28]=[CH:27][C:26]([S:29]([N:32]=[C:33]=[O:34])(=[O:31])=[O:30])=[CH:25][CH:24]=1>ClCCl>[CH2:1]([C:3]1[N:13]([C:14]2[CH:15]=[CH:16][C:17]([CH2:20][CH2:21][NH:22][C:33]([NH:32][S:29]([C:26]3[CH:27]=[CH:28][C:23]([CH3:35])=[CH:24][CH:25]=3)(=[O:31])=[O:30])=[O:34])=[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 77703p-Toluenesulfonyl isocyanateHCID 218763642-[4-(2-ethyl-5,7-dimethyl-3H-imidazo[4,5-b]pyridin-3-yl)phenyl]ethylamine

Product 1

HCID 99353672-ETHYL-5,7-DIMETHYL-3-(4-{2-[({[(4-METHYLPHENYL)SULFONYL]AMINO}CARBONYL)AMINO]ETHYL}PHENYL)-3H-IMIDAZO[4,5-b]PYRIDINEYield 56%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of 2-[4-(2-ethyl-5,7-dimethyl-3H-imidazo[4,5-b]pyridin-3-yl)phenyl]ethylamine (step 9, 1.2 g, 4.0 mmol) in dichloromethane (15 mL) was added p-toluenesulfonyl isocyanate (805 mg, 4.0 mmol). The resulting mixture was stirred at room temperature for 3 h. After removal of solvent, the residue was purified by flash column chromatography on silica gel eluting with dichloromethane/methanol (20:1) to afford 1.10 g (56%) of the title compound as white solids: 1H-NMR (CDCl3) δ 7.85 (2H, d, J=8.2 Hz), 7.32 (2H, d, J=8.2 Hz), 7.23 (2H, d, J=8.4 Hz), 7.16 (2H, d, J=8.4 Hz), 6.91 (1H, s), 6.12 (1H, br.s), 3.55–3.46 (2H, m), 2.85 (2H, t, J=6.3 Hz), 2.74–2.64 (5H, m), 2.42 (3H, s), 2.41 (3H, s), 1.21 (3H, t, J=7.6 Hz).

Workup

  1. customAfter removal of solvent
  2. customthe residue was purified by flash column chromatography on silica gel eluting with dichloromethane/methanol (20:1)

Sources & evidence

ORD record
ord-af21aca094134ba1bf530c5245236b7f
Source dataset
uspto-grants-2006_12
Patent number
US07148234B2

Reaction notes

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