Author/Authors :
Yang، نويسنده , , Shuliang and Wu، نويسنده , , Cunqi and Ruan، نويسنده , , Mingbo and Yang، نويسنده , , Yanqin and Zhao، نويسنده , , Yongxia and Niu، نويسنده , , Jiajia and Yang، نويسنده , , Wei and Xu، نويسنده , , Jingwei، نويسنده ,
Abstract :
A simple, metal- and ligand-free procedure for the Ullmann-type C–O coupling reactions has been achieved by allowing aryl bromides to react with a variety of phenols in the presence of t-BuOK. Moderate to excellent yields of O-arylation products are obtained under mild conditions in a short time. In addition, two examples of C–N coupling reactions are also reported. A benzyne mechanism is proposed according to the experiment data.
Keywords :
diaryl ether , Benzyne , Ullmann-type coupling , Aryl bromides , potassium tert-butoxide
