ethyl 5-(dimethylamino)-2-<<4-<2-(4-phenyl-4-methyl-2,5-dioxo-1-imidazolidinyl)ethyl>phenyl>hydrazin-2-ylidene>pentanoate 在
硫酸 作用下,
以
乙醇 为溶剂,
以80%的产率得到ethyl 3-<2-(dimethylamino)ethyl>-5-<2-(4-phenyl-4-methyl-2,5-dioxo-1-imidazolidinyl)ethyl>-1H-indole-2-carboxylate