Delivering 2-Aryl Benzoxazoles through Metal-Free and Redox-Neutral De-CF<sub>3</sub> Process
作者:Xinxin Qiao、Yong-De Zhao、Mingru Rao、Zhan-Wei Bu、Guangwu Zhang、Heng-Ying Xiong
DOI:10.1021/acs.joc.1c01619
日期:2021.10.1
demonstrated broad substrate scope and good compatibility of functional groups. 2-Aryl benzothiazole and 2-aryl benzoimidazole could be smoothly assembled in the same manner. On the basis of preliminary mechanistic studies, base initiated and aromatization driven β-carbon elimination was considered to be the key step for the formation of 2. This reaction offers an alternative, facile, and sustainable route to
CF 3 -氢苯并恶唑的C sp3 -CF 3键的意外断裂已被公开,在无金属和氧化还原中性条件下提供了一系列2-芳基苯并恶唑。这种转变展示了广泛的底物范围和良好的官能团兼容性。2-芳基苯并噻唑和2-芳基苯并咪唑可以以相同的方式顺利组装。在初步机理研究的基础上,碱引发和芳构化驱动的 β-碳消除被认为是形成2的关键步骤。该反应为获取重要的 2-芳基苯并恶唑基序提供了一种替代、简便且可持续的途径。