The reaction of 1-amino-4-acylaminoanthraquinones with piperidine in the presence of CoCl2 and atmospheric oxygen gave the 2-aminated products in 75–80%, and similar reaction of 1-hydroxyanthraquinone or 1-aminoanthraquinone-2-sulfonic acid with butylamine gave the corresponding 4-aminated products, respectively. The effects of the α-substituents and the role of metal salts were discussed.
1-amino-4-acylaminoanthraquinones 与
哌啶在 CoCl2 和大气氧存在下发生反应,得到 75-80% 的 2-
氨基产物;1-hydroxyanthraquinone 或 1-aminoanthraquinone-2-sulfonic acid 与
丁胺发生类似反应,分别得到相应的 4-
氨基产物。讨论了 α 取代基的影响和
金属盐的作用。