Pyrido[4,3 or 3,4 or 2,3-c]-1,5-naphthyridines were obtained with good yields after chlorodehydroxylation and dehalogenation reactions starting from the parent pyridonaphthyridinones. These pyridonaphthyridinones were synthesized in a two-step procedure using a Suzuki cross-coupling reaction between 2-chloro-3-fluoropyridine and orthocyanopyridylboronic esters followed by a KOH-mediated anionic ring
从母体吡啶并吡啶并吡啶酮开始进行氯脱羟基化和脱卤反应后,可得到高产率的吡啶并[4,3或3,4或2,3 - c ] -1,5-萘啶。使用2-氯-3-氟吡啶与原氰基吡啶基硼酸酯之间的Suzuki交叉偶联反应,然后进行KOH介导的阴离子闭环,以两步法合成这些吡啶并萘并吡啶并酮。