反应详情

温度

90 °C

A 2.49 g quantity of carbomethoxymethylisocyanate was added to a suspension of 2.00 g of 4-hydroxy-2(1H)-pyridone in 60 ml of dioxane, and the mixture was stirred at 90° C. for 30 minutes. The solvent was distilled off, and ether was added to the residue. The precipitate thus formed was filtered, giving 2.20 g of the title compound in a yield of 54%.

1. distillationThe solvent was distilled off
2. additionether was added to the residue
3. customThe precipitate thus formed
4. filtrationwas filtered