Water Compatible Gold(III)-Catalysed Synthesis of Unsymmetrical Ethers from Alcohols
作者:Ana B. Cuenca、Gisela Mancha、Gregorio Asensio、Mercedes Medio-Simón
DOI:10.1002/chem.200701134
日期:2008.2.8
preparation of unsymmetrical ethers from alcohols catalysed by the simplest and least expensive gold catalyst, NaAuCl(4), is described for the first time. The procedure enables the etherification of benzylic and tertiary alcohols with moderate to good yields under mild conditions with low catalyst loading. Symmetrical ethers, the usual side products in the etherification of alcohols, were not detected
首次描述了一种由最简单和最便宜的金催化剂NaAuCl(4)催化的由醇制备不对称醚的有效且广泛的方法。该方法能够在温和的条件下以较低的催化剂载量以中等至良好的产率醚化苄醇和叔醇。在这种情况下,未检测到对称醚,这是醇醚化过程中的常见副产物。由手性苄醇形成外消旋醚表明是碳正离子的中间产物,以前尚不假定碳正离子涉及涉及醇的金催化反应。