3-(4-chlorobenzyl)-4-methyl-2-(4-chlorophenyl)selenocarbamoylthiazolium inner salt 、
丁炔二酸二甲酯 以
苯 为溶剂,
反应 0.5h,
以89%的产率得到(E)-dimethyl 1-(4-chlorobenzyl)-4-(4-chlorophenyl)-3-(1,2-dimethoxycarbonylvinylthio)-2-methyl-1,4-dihydroselenopheno[2,3-b]-pyrazine-6,7-dicarboxylate