Synthesis of 4,5-Disubstituted Benzo[c][2,7]naphthyridines by Combined Metalation-Palladium-Catalysed Cross-Coupling Strategies. Preparation of 8h-Pyrido[4,3,2-<i>mn</i>]acridone as a Model of Cystodytin Alkaloids
作者:F. Guillier、F. Nivoliers、C. Cochennec、A. Godard、F. Marsais、G. Quéguiner
DOI:10.1080/00397919608003845
日期:1996.12
Abstract A short and efficient synthesis of 8H-pyrido[4,3,2-mn]acridone is described. The strategy involves the preparation of 4-chloro-5-methylbenzo[c][2,7]naphtyridine, as key intermediate, by metalation and Palladium catalyzed cross-coupling reaction. A second cross-coupling reaction and subsequent oxydation by SeO2 led to the title compound.
摘要 描述了 8H-吡啶并[4,3,2-mn]吖啶酮的快速高效合成。该策略涉及通过金属化和钯催化的交叉偶联反应制备作为关键中间体的 4-氯-5-甲基苯并[c][2,7]萘啶。第二次交叉偶联反应和随后的 SeO2 氧化得到标题化合物。