Triethylamine → N-{4-[4-amino-2-(ethoxymethyl)-6-methyl-1H-imidazo[4,5-c]pyridin-1-yl]butyl}-2-methylpropanamide
Reaction equation
[C:1](Cl)(=[O:5])[CH:2]([CH3:4])[CH3:3].[NH2:7][CH2:8][CH2:9][CH2:10][CH2:11][N:12]1[C:20]2[CH:19]=[C:18]([CH3:21])[N:17]=[C:16]([NH2:22])[C:15]=2[N:14]=[C:13]1[CH2:23][O:24][CH2:25][CH3:26].C(N(CC)CC)C>C(Cl)(Cl)Cl>[NH2:22][C:16]1[C:15]2[N:14]=[C:13]([CH2:23][O:24][CH2:25][CH3:26])[N:12]([CH2:11][CH2:10][CH2:9][CH2:8][NH:7][C:1](=[O:5])[CH:2]([CH3:4])[CH3:3])[C:20]=2[CH:19]=[C:18]([CH3:21])[N:17]=1Participants
Reactant 3
Product 1
Reagents, catalysts & solvents 1
Procedure
Isobutyryl chloride (181 μL, 1.73 mmol) was added to a solution of 1-(4-aminobutyl)-2-ethoxymethyl-6-methyl-1H-imidazo[4,5-c]pyridin-4-amine (0.435 g, 1.57 mmol), triethylamine (280 μL, 2.04 mmol) and chloroform (8 mL). The reaction mixture was allowed to stir at ambient temperature for 4 hours then it was diluted with chloroform (20 mL) and washed with saturated sodium bicarbonate solution (10 mL). The organic * layer was dried over magnesium sulfate and then concentrated under reduced pressure. The residue was purified by column chromatography (30 g of silica gel eluting with 1 L of 2% methanol in chloroform containing 0.5% triethylamine) to provide 0.225 g of N-{4-[4-amino-2-(ethoxymethyl)-6-methyl-1H-imidazo[4,5-c]pyridin-1-yl]butyl}-2-methylpropanamide as a white powder, m.p. 170.5-172.5° C.
Workup
- washwashed with saturated sodium bicarbonate solution (10 mL)
- dry with materialThe organic * layer was dried over magnesium sulfate
- concentrationconcentrated under reduced pressure
- customThe residue was purified by column chromatography (30 g of silica gel eluting with 1 L of 2% methanol in chloroform containing 0.5% triethylamine)
Sources & evidence
- ORD record
- ord-5d0d1ba132d1482182098c302995633b
- Source dataset
- uspto-grants-2004_04
- Patent number
- US06720422B2
Reaction notes
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