反应详情

A solution of 3-chloro-1-(4-chlorophenyl)-1,2-dihydroquinoxalin-2-one (7.5 g), piperidine (2.4 g), and triethylamine (2.9 g) in ethanol (50 ml) was stirred at 20° C. for 2 hours. Water was added and the product was extracted into chloroform. Evaporation of the solvent and recrystallisation from ethanol gave the title compound mp 184°-185° C.

1. extractionthe product was extracted into chloroform
2. customEvaporation of the solvent and recrystallisation from ethanol