马来酸酐 、
4-[1-(4-Dimethylamino-phenylamino)-meth-(Z)-ylidene]-5-methyl-2-phenyl-2,4-dihydro-pyrazole-3-selone 以
甲苯 为溶剂,
反应 0.33h,
生成 4-(4-Dimethylamino-phenylamino)-3-methyl-1-phenyl-1,4,4a,7a-tetrahydro-furo[3',4':5,6]selenino[2,3-c]pyrazole-5,7-dione