反应详情

温度

9 °C

A solution of 152 g. (0.78 m.) of 3-chloro-1-methyl-1H-quinoxalin-2-one, 116 g. (1.1 m.) of ethyl carbazate and 1 l. of acetonitrile is refluxed for 16 hours. The mixture is cooled to 9° C. and the product collected by filtration and used directly for cyclization.

1. filtrationthe product collected by filtration