A ligand-free, powerful, and practical method for mono and polymethoxylation of unactivated aryl bromides has been developed; CuCl was used as catalyst, HCOOMe as cocatalyst, and methanolic MeONa as both nucleophile and solvent. This eco-friendly procedure is characterized by operational simplicity, inexpensive substrates (unactivated mono to polybromoarenes), full conversion, and direct recovery of pure MeOH.
一种无
配体的强有效的方法已被开发用于非活化芳基
溴化物的单甲氧基化和多甲氧基化;该反应使用CuCl作为催化剂,HCOOMe作为助催化剂,
甲醇的MeONa作为亲核试剂和溶剂。这种环保的工艺具有操作简单、底物成本低(非活化单至多
溴苯)、完全转化以及可直接回收纯MeOH的特点。