4-methyl-3-(4-methylbenzyl)-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 3-(1,2-dimethoxycarbonylvinylthio)-2-methyl-1-(4-methylbenzyl)-4-(4-trifluoromethylphenyl)-1,4-dihydroselenopheno[2,3-b]pyrazine-6,7-dicarboxylate