反应详情

Isobutyryl chloride (96 μL, 0.917 mmol) was added drop wise to a chilled (0° C.) solution of 2-(ethoxymethyl)-6,7-dimethyl-1-(2-piperidin-4-ylethyl)-1H-imidazo[4,5-c]pyridin-4-amine (304 mg, 0.917 mmol) in dichloromethane (10 mL). The reaction mixture was allowed to stir overnight then it was diluted with chloroform and washed with 5% sodium hydroxide, water and brine. The organic layer was dried over magnesium sulfate and then concentrated under reduced pressure. The residue was recrystallized from acetonitrile to provide 185 mg of 2-(ethoxymethyl)-1-[2-(1-isobutyrylpiperidin-4-yl)ethyl]-6,7-dimethyl-1H-imidazo[4,5-c]pyridin-4-amine as a yellowish solid, m.p. 167.5-169.2° C.

1. washwashed with 5% sodium hydroxide, water and brine
2. dry with materialThe organic layer was dried over magnesium sulfate
3. concentrationconcentrated under reduced pressure
4. customThe residue was recrystallized from acetonitrile