反应详情

0.72 g of sodium hydride are added to a suspension of 4.1 g of 2,3-dihydro-4-methyl-2-oxo-1-pyrid-3-ylmethyleneamino-1H-imidazole in 80 ml of N,N-dimethylformamide. The mixture is heated to 50°, treated with a solution of 3.78 g of 1-bromo-2-oxo-butane in 20 ml of N,N-dimethylformamide, and stirred for 30 minutes. The N,N-dimethylformamide is then removed on a rotary evaporator. In a mixer, the residue is mixed intimately with water. The crystals are filtered off, yielding the title compound melting at 183°-184°.

1. temperatureThe mixture is heated to 50°
2. customThe N,N-dimethylformamide is then removed on a rotary evaporator
3. additionIn a mixer, the residue is mixed intimately with water
4. filtrationThe crystals are filtered off