Regioselective cross-coupling reactions and nucleophilic aromatic substitutions on a 5,7-dichloropyrido[4,3-d]pyrimidine scaffold
作者:Mi-Yeon Jang、Steven De Jonghe、Ling-Jie Gao、Piet Herdewijn
DOI:10.1016/j.tetlet.2006.10.056
日期:2006.12
7-dichloropyrido[4,3-d]pyrimidine scaffold is described. The chlorine at position 5 can selectively be displaced by different palladium-catalyzed cross-coupling reactions and nucleophilic aromatic substitutions. In the subsequent step, the chlorine at position 7 can be further derivatized. The described synthetic sequence allows for the construction of a diverse pyrido[4,3-d]pyrimidine library with structural
描述了5,7-二氯吡啶并[4,3- d ]嘧啶骨架的合成。位置5上的氯可以通过不同的钯催化的交叉偶联反应和亲核芳族取代选择性取代。在随后的步骤中,可以将7位的氯进一步衍生化。所述的合成序列允许构建在位置5和7具有结构变化的多样化的吡啶并[4,3- d ]嘧啶文库。