作者:Anna C. Dawsey、Vincent Li、Kimberly C. Hamilton、Jianmei Wang、Travis J. Williams
DOI:10.1039/c2dt00025c
日期:——
We report herein convenient, aerobic conditions for the oxidation of thiazolines to thiazoles and data regarding the oxidation mechanism. These reactions feature operationally simple and environmentally benign conditions and proceed in good yield to afford the corresponding azoles, thus enabling the inexpensive preparation of valuable molecular building blocks. Incorporation of a novel diimine-ligated copper catalyst, [(MesDABMe)CuII(OH2)3]2+ [−OTf]2, provides increased reaction efficiency in many cases. In other cases copper-free conditions involving a stoichiometric quantity of base affords superior results.
我们在此报告了便捷的厌氧条件下将噻唑啉氧化为噻唑的反应及其氧化机制的数据。这些反应具有操作简单和环保的特点,并且能以良好的产率生成相应的杂环化合物,从而实现价值分子构建块的廉价制备。引入一种新型的双亚胺配位铜催化剂[(MesDABMe)CuII(OH2)3]2+ [−OTf]2,在许多情况下提高了反应效率。而在其他情况下,使用计量的碱无铜条件能够获得更优的结果。