3-methyl-4-phenylthieno[2,3-b]thiophene-2,5-dicarbonyl diazide 、
丙二酸二乙酯 在
sodium ethanolate 作用下,
以
乙醇 为溶剂,
以70%的产率得到ethyl 1-[(5-[4-ethoxycarbonyl-5-hydroxy(1,2,3)triazol-1-yl]-4-methyl-3-phenyl-thieno[2,3-b]thiophene-2-yl)carbonyl]-5-hydroxy(1,2,3)triazole-4-carboxylate