3-benzyl-4-methyl-2-(4-trifluoromethylphenyl)selenocarbamoylthiazolium inner salt 、
丁炔二酸二甲酯 以
苯 为溶剂,
反应 0.5h,
以87%的产率得到(E)-dimethyl 1-benzyl-3-(1,2-dimethoxycarbonylvinylthio)-2-methyl-4-(4-trifluoromethylphenyl)-1,4-dihydroselenopheno[2,3-b]-pyrazine-6,7-dicarboxylate