a diarylamine, and elaboration via the 4,5‐dibromoacridone. The bromo substituents are amenable to Suzuki‐Miyaura coupling. Conversion to a 9‐chloro‐4,5‐dibromoacridine, followed by bromine‐lithium exchange, allows the preparation of a 4,5‐bis (phosphino)‐9‐chloroacridine. The 9‐chloro moiety undergoes nucleophilic aromatic substitution by methoxide or an aryloxide. One‐electron reduction of a 9‐(aryloxy)‐4
这项研究描述了通过直接芳基化二芳基胺和通过4,5-二
溴ac啶酮的精制合成one啶酮。
溴取代基适合Suzuki-Miyaura偶联。转化为9-
氯-4,5-二
溴ac啶,然后进行
溴-
锂交换,可以制备4,5-双(膦基)-9-
氯ac啶。9-
氯部分经历了
甲醇或芳氧基的亲核芳族取代。单电子还原9-(芳氧基)-4,5-双(膦基)ac啶可提供稳定的自由基阴离子。