ethyl 5-chloro-2-[(chloroacetyl)amino]-6-[(2,2-dimethylpropanoyl)amino]nicotinate 在
乙酸乙酯 作用下,
以
叔丁醇 为溶剂,
反应 42.0h,
以to afford 1.28 g (29%) of the title compound as a pale purple solid的产率得到ethyl 5-amino-6-chloro-2-oxo-2,3-dihydroimidazo[1,2-a]pyridine-8-carboxylate