Ipso-Borylation of Aryl Ethers via Ni-Catalyzed C–OMe Cleavage
摘要:
A Ni-catalyzed ipso-borylation of aryl ethers via C(sp(2))-OMe and C(sp(3))-OMe Cleavage is described. The transformation is characterized by its wide substrate scope tinder mild conditions and an exquisite divergence in Site selectivity that can be easily switched by selecting the appropriate, boron reagent.
Borylation of Aryl and Alkenyl Carbamates through Ni-Catalyzed CO Activation
作者:Kun Huang、Da-Gang Yu、Shu-Fang Zheng、Zhen-Hua Wu、Zhang-Jie Shi
DOI:10.1002/chem.201001943
日期:2011.1.17
Direct borylation of aryl/alkenylcarbamates was developed through Ni catalysis. A broad substrate scope, including aryl, alkenyl, and heterocyclic derivatives, was studied. This study offers a convenient method to approach aryl/alkenyl boronic esters from phenol and ketone derivatives (see scheme).