ammonium nitrate (CAN) regioselectively furnished an ortho-quinone leaving a methoxyl group unreacted, which further condensed with aromatic ortho-diamines to afford angularly fused π-extended acridone derivatives. Crystallographic analysis reveals the distinct manner of molecular packing in the crystals according to the dimension of π-extension. The benzene at the turning point possesses a shorter outer
邻二甲氧基
吖啶酮与
硝酸铈铵 (CAN)的氧化脱甲基反应区域选择性地提供了一个邻苯醌,留下一个未反应的甲氧基,其进一步与芳族邻二胺缩合得到角稠合的 π- 扩展
吖啶酮衍
生物。晶体学分析揭示了晶体中分子堆积的不同方式,这取决于 π 延伸的尺寸。转折点的苯具有较短的外键和较长的内键,这会影响分子共轭并导致芳香性减弱。