ethyl 5-(dimethylamino)-2-<<4-<2-(3,4-dimethyl-3-phenyl-2,5-dioxo-1-imidazolidinyl)ethyl>phenyl>hydrazin-2-ylidene>pentanoate 在
硫酸 作用下,
以
乙醇 为溶剂,
以54%的产率得到ethyl 3-<2-(dimethylamino)ethyl>-5-<2-(3,4-dimethyl-4-phenyl-2,5-dioxo-1-imidazolidinyl)ethyl>-1H-indole-2-carboxylate