反应详情

温度

85 °C

After adding 22 mg of 2-hydrazinopyrimidine and 50 μl of triethylamine to a solution of 112 mg of {2-[3-(1-hydroxyethyl)-4,5-dimethoxyphenyl]-2-[4-(5-methyl-[1,2,4]oxadiazol-3-yl)phenylimino]-1-methylsulfanylethylidene}carbamic acid methyl ester in 2 ml of DMF, the mixture was stirred overnight at 85° C. under a nitrogen atmosphere. The reaction mixture was concentrated, and the residue was dissolved in 3 ml of methanol and 0.3 ml of acetic acid. After adding 100 mg of sodium cyanotrihydroborate to the solution, the mixture was stirred at room temperature for 1 hour. Water was added to the reaction mixture and extraction was performed with ethyl acetate. The organic layer was dried over anhydrous magnesium sulfate. The desiccating agent was filtered off and the filtrate was concentrated under reduced pressure. The residue was purified by NAM silica gel column chromatography (methanol-ethyl acetate) to give 5-{[3-(1-hydroxyethyl)-4,5-dimethoxyphenyl]-[4-(5-methyl-[1,2,4]oxadiazol-3-yl)phenylamino]methyl}-2-pyrimidin-2-yl-4,5-dihydro-1H-[1,2,4]triazol-3-one (93 mg) as a light brown solid.

1. concentrationThe reaction mixture was concentrated
2. dissolutionthe residue was dissolved in 3 ml of methanol
3. additionAfter adding 100 mg of sodium cyanotrihydroborate to the solution
4. stirringthe mixture was stirred at room temperature for 1 hour
5. additionWater was added to the reaction mixture and extraction
6. dry with materialThe organic layer was dried over anhydrous magnesium sulfate
7. filtrationThe desiccating agent was filtered off
8. concentrationthe filtrate was concentrated under reduced pressure
9. customThe residue was purified by NAM silica gel column chromatography (methanol-ethyl acetate)