A ligand-free, powerful, and practical method for methoxylation of unactivated aryl bromides by use of the CuCl/HCOOMe/MeONa/MeOH system
作者:Ying Guo、Si-Zhe Ji、Cheng Chen、Hong-Wei Liu、Jian-Hong Zhao、Yu-Lin Zheng、Ya-Fei Ji
DOI:10.1007/s11164-014-1917-x
日期:2015.11
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。