Synthesis of Diaryl Ethers, Diaryl Sulfides, Heteroaryl Ethers and Heteroaryl Sulfides under Microwave Dielectric Heating
作者:Quanrui Wang、Feng Li、Qingqing Meng、Huansheng Chen、Zhiming Li、Fenggang Tao
DOI:10.1055/s-2005-865321
日期:——
This paper describes the synthesis of diaryl ethers and sulfides by utilizing microwave heating methodology. The methodology is shown to be rapid and efficient for the coupling of phenols or thiophenol with electron-deficient aryl halides through a SNAr reaction. The scope of the protocol can be expanded to six-membered heterocycles bearing a hydroxyl group as well as to the reaction of 2-pyrimidinethiol with mildly activated aryl halides, providing heteroaryl ethers and sulfides, respectively. The advantages of the present method include the wide substrate scope, the obviation of metal catalysts, ease of product isolation, and high purity of products.
本文描述了利用微波加热技术合成二芳基醚和硫化物的方法。该方法在芳基卤与缺电子酚或苯硫酚的SNAr反应中表现出快速、高效的特点。该方法的应用范围可扩展到含有羟基的六元杂环化合物,以及2-嘧啶硫醇与适度活化的芳基卤的反应,分别得到杂芳基醚和硫化物。目前方法的优势包括广泛的底物适用性、无需金属催化剂、产品分离简便以及高纯度。