反应详情

Under a dry nitrogen atmosphere a solution of 5-methyl-1H-imidazole-4-carboxylic acid chloride (1.5 g, 0.01 mole) and 3-chloroaniline (1.3 g, 0.01 mole) in 25 ml of pyridine was stirred at ambient temperature for two days. The reaction mixture was then concentrated under reduced pressure, and the residue was slurried with aqueous saturated sodium bicarbonate. The resultant solid was collected by filtration, washed with water, and recrystallized, yielding N-(3-chlorophenyl)-5-methyl-1H-imidazole-4-carboxamide; (0.5 g; mp, 199°-202°).

1. concentrationThe reaction mixture was then concentrated under reduced pressure
2. filtrationThe resultant solid was collected by filtration
3. washwashed with water
4. customrecrystallized