反应详情

温度

80 °C

4-(3-Chloro-4-methoxybenzyl)amino-6-cyanol-1(2H)-phthalazinone (0.20 g) prepared in Example 21 was dissolved in 5 ml of N-methyl-2-pyrrolidinone, followed by the addition of 0.14 g of t-butyl bromoacetate and 0.24 g of potassium carbonate. The obtained mixture was stirred at 80° C. for 4 hours and poured into water, followed by extraction with ethyl acetate. The organic phase was washed with water twice and with a saturated aqueous solution of common salt, dried over anhydrous magnesium sulfate and freed from the solvent by vacuum distillation. The title compound (0.41 g) was obtained as a yellow crystal.

1. extractionfollowed by extraction with ethyl acetate
2. washThe organic phase was washed with water twice
3. dry with materialwith a saturated aqueous solution of common salt, dried over anhydrous magnesium sulfate
4. distillationfreed from the solvent by vacuum distillation