Regioselective Synthesis of Aniline-Derived 1,3- and <i>C</i><sub>i</sub>-Symmetric 1,4-Diols from <i>trans</i>-1,4-Cyclohexadiene Dioxide
作者:Christopher J. Monceaux、Paul R. Carlier
DOI:10.1021/ol902856b
日期:2010.2.5
trans-Diepoxide 1 is well-known to react with aliphatic amines and the azide ion to give exclusively the 1,3-diol products. However, we observed that by judicious choice of conditions, reaction with anilines can give predominantly the 1,3-diol (3) or the heretofore rarely seen Ci-symmetric 1,4-diol (4). Synthesis of an unsymmetrical 1,4-diol from two different anilines is also demonstrated. These studies
众所周知,反式-二环氧化物1与脂族胺和叠氮化物离子反应,仅得到1,3-二醇产物。然而,我们观察到,通过明智地选择条件,与苯胺的反应可以主要产生1,3-二醇(3)或迄今为止很少见的C 1-对称的1,4-二醇(4)。还证明了由两种不同的苯胺合成不对称的1,4-二醇。这些研究表明,分子内苯胺基-NH氢键供体可以指导Fürst-Plattner环氧化合物的打开。