Cobalt-Catalyzed C–H Acetoxylation of Phenols with Removable Monodentate Directing Groups: Access to Pyrocatechol Derivatives
作者:Quan Gou、Xiaoping Tan、Mingzhong Zhang、Man Ran、Tengrui Yuan、Shuhua He、Linzong Zhou、Tuanwu Cao、Feihua Luo
DOI:10.1021/acs.orglett.0c00312
日期:2020.3.6
An efficient cobalt-catalyzed C-Hacetoxylation of phenols has been developed by using PIDA (phenyliodine diacetate) as a sole acetoxy source to synthesize pyrocatechol derivatives for the first time. The key feature of this method is the use of earth-abundant metal cobalt as the green and inexpensive catalyst for the acetoxylation of C(sp2)-H bonds under neutral reaction conditions. Furthermore, the