2-chloro-3-(thiomorpholine-4-yl)maleimide 1,8-diazabicyclo[5.4.0]undec-7-ene salt 、
5-chloro-6-phenylpyrazine-2,3-dicarbonitrile 以
丙酮 为溶剂,
反应 1.0h,
以73%的产率得到5-[3-chloro-2,5-dioxo-4-(thiomorpholin-4-yl)-2,5-dihydro-pyrrol-1-yl]-6-phenylpyrazine-2,3-dicarbonitrile