作者:Yanzhao Wang、Jingzhao Xia、Guoqiang Yang、Wanbin Zhang
DOI:10.1016/j.tet.2017.12.015
日期:2018.1
An Ir-catalyzed asymmetric hydrogenation of 2-substituted 1,4-benzodioxines was developed for the preparation of chiral 1,4-benzodioxanes, which are present in numerous biologically active compounds and natural products. Our tropos biphenyl phosphine-oxazoline ligand is essential for obtaining good ee. A broad range of substrates were tolerable to the reaction conditions and gave the corresponding
开发了Ir催化的2-取代的1,4-苯并二恶英的不对称氢化反应,用于制备手性的1,4-苯并二恶烷,该手性存在于许多生物活性化合物和天然产物中。我们的对位联苯膦-恶唑啉配体对于获得良好的ee是必不可少的。使用我们的Tropos膦-恶唑啉配体的Ir配合物,各种各样的底物可耐受反应条件,并以优异的收率和中等至良好的对映选择性提供相应的氢化产物。