The invention describes the process of catalytic O-demethylation of 3-methoxy-morphinane compounds using boron tribromide. Addition of catalysts reduces the reaction time, improves reacting the substrate to give the product in very good purity and yield. The said approach can be used, for example, for the preparation of oxymorphone, naltrexone, naloxone and nalbuphine from their respective O-methyl derivatives.
本发明描述了使用
三溴化硼催化剂进行3-甲
氧基
吗啡烷类化合物的催化O-去
甲基化过程。添加
催化剂可缩短反应时间,提高底物的反应性,从而以非常高的纯度和收率给出产物。该方法可用于制备羟
吗啡酮、
纳曲酮、
纳洛酮和
纳布啡等化合物,这些化合物是从它们各自的O-
甲基衍
生物制备而来的。