m-Terphenyl Ethers, a New Hydroxy Protecting Group Cleavable under Reductive Single Electron Transfer Reaction Conditions
作者:Ugo Azzena、Luisa Pisano、Sarah Mocci
DOI:10.1055/s-0030-1259997
日期:2011.5
m-Terphenyl ethers and, to a lesser extent, 2,6-dimethoxyphenyl ethers, were tested as protected hydroxy derivatives under a variety of reaction conditions. These ethers underwent regioselective cleavage of the aromatic C(1)-O bond under reductive SET reaction conditions using alkali metals in tetrahydrofuran at room temperature. This deprotective procedure was efficiently realized in the presence
米三联苯醚和,在较小程度上,2,6-二甲氧基苯基醚,测试了作为在各种反应条件下被保护的羟基的衍生物。这些醚在室温下在四氢呋喃中使用碱金属在还原性SET反应条件下经历了芳香族C(1)-O键的区域选择性裂解。在几个其他官能团(包括缩醛,苯基烷基醚,未保护的醇以及碳-碳双键和三键)的存在下,可以有效地实现这种脱保护程序。此外,米-三联苯醚证明不同的反应条件,包括酸性水解和形成和/或不同的有机金属试剂的就业下是稳定的。 醇-电子转移-保护基-还原-钠