Aryl Boronic Acid Catalysed Dehydrative Substitution of Benzylic Alcohols for C−O Bond Formation
作者:Susana Estopiñá‐Durán、Liam J. Donnelly、Euan B. Mclean、Bryony M. Hockin、Alexandra M. Z. Slawin、James E. Taylor
DOI:10.1002/chem.201806057
日期:2019.3.12
substitution of benzylic alcohols with a second alcohol to form new C−O bonds. This method has been applied to the intermolecular substitution of benzylic alcohols to form symmetrical ethers, intramolecular cyclisations of diols to form aryl‐substituted tetrahydrofuran and tetrahydropyran derivatives, and intermolecular crossed‐etherification reactions between two different alcohols. Mechanistic control
五氟苯基硼酸和草酸的组合催化苄醇与第二种醇的脱水取代,形成新的C-O键。该方法已应用于苯甲醇的分子间取代以形成对称醚,二醇的分子内环化以形成芳基取代的四氢呋喃和四氢吡喃衍生物,以及两种不同醇之间的分子间交叉醚化反应。机械控制实验已经确定了在芳基硼酸和草酸之间形成的潜在催化中间体。