A mild and efficient ultrasound-assisted synthesis of diaryl ethers without any catalyst.
Diaryl ethers have been prepared by a mild and efficient S(N)Ar reaction by coupling of various phenols including that having a electron-withdrawing group with activated fluoroarenes using sonication in good to excellent yields at very low temperature (58 degrees C) under catalyst-free.
Xu
Hui
H
College of Science, Northwest A&F University, Yangling 712100, Shaanxi Province, PR China. xhzjyy@yahoo.com.cn
Liao
Wu-Ming
WM
Li
Hong-Feng
HF