ethyl 1(β-diethylaminoethyl)-3-phenyl-7-methyl-2,4-dioxo-1,2,3,4-tetrahydropyrido<2,3-d>pyrimidine-5-carboxylate 在
盐酸 作用下,
以
乙醇 为溶剂,
以90%的产率得到ethyl 1-[2-(diethylamino)ethyl]-7-methyl-2,4-dioxo-3-phenylpyrido[2,3-d]pyrimidine-5-carboxylate;hydron;chloride