dimethyl 2-(4-methyl-5-sulfanyl-1,3-dithiol-2-ylidene)propanedioate;2,3,4,6,7,8-hexahydropyrrolo[1,2-a]pyrimidine 在
碘 作用下,
以
甲醇 为溶剂,
以38%的产率得到2-{4-[2-(Bis-methoxycarbonyl-methylene)-5-methyl-[1,3]dithiol-4-yldisulfanyl]-5-methyl-[1,3]dithiol-2-ylidene}-malonic acid dimethyl ester