ethyl 2-(2-chloroethyl)-3,4-dihydro-5-methyl-4-oxothieno[2,3-d]pyrimidin 6-carboxylate 、
(5-Methyl-1H-benzoimidazol-2-yl)-methanethiol 在
sodium hydroxide 作用下,
以
乙醇 为溶剂,
反应 3.0h,
以49%的产率得到ethyl 2-{2-[(5(6)-methyl-1H-benzimidazol-2-ylmethyl)thio]ethyl}-5-methyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylate