ethyl 5-fluoro-2,3-dihydro-4-(4-methyl-1-piperazinyl)-1-methyl-2,7-dioxo-1H,7H-pyrido<3,2,1-i,j>cinnoline-8-carboxylate 在
盐酸 作用下,
以
溶剂黄146 为溶剂,
反应 5.0h,
以64%的产率得到5-fluoro-2,3-dihydro-1-methyl-2,7-dioxo-4-(4-methyl-1-piperazinyl)-1H,7H-pyrido<3,2,1-i,j>cinnoline-8-carboxylate