A Facile Demethylation of Ortho Substituted Aryl Methyl Ethers Promoted by AlCl<sub>3</sub>
作者:Zhen-Ting Du、Jing Lu、Hong-Rui Yu、Yan Xu、An-Pai Li
DOI:10.3184/030823410x12708998015900
日期:2010.4
An efficient and practical demethylation of ortho substituted aryl methyl ethers using AlCl3 has been developed. This method gives a high conversion, is simple to operate and is cost-effective. A mechanism involving the complexation of AlCl3 with the OMe and the adjacent electron withdrawing group is proposed. Many functional groups can be tolerated in the demethylation process, and 29 examples gave
已经开发出使用 AlCl3 对邻位取代的芳基甲基醚进行有效和实用的去甲基化。该方法转化率高,操作简单,成本低廉。提出了一种涉及 AlCl3 与 OMe 和相邻吸电子基团络合的机制。去甲基化过程中可以容忍许多官能团,29个例子以90-98%的产率得到了去甲基化产物。