Rapid Access to Free Phenols by Photocatalytic Acceptorless Dehydrogenation of Cyclohexanones at Room Temperature
作者:Lin Min、Jiani Lin、Wei Shu
DOI:10.1002/cjoc.202300363
日期:2023.11
conditions remain challenging. Herein, a photocatalytic acceptorless hydrogen-evolution aromatization of cyclohexanones or cyclohexenones at room temperature has been developed. The reaction features the visible-light and cobalt co-catalyzed sequential dehydrogenation of in-situ formed enol silyl ethers, which are regarded as a challenging process. This operationally simple method enables the synthesis
酚类是天然产物和生物活性化合物中普遍存在的子结构。然而,在温和条件下直接构建酚的实用方法仍然具有挑战性。在此,开发了环己酮或环己烯酮在室温下的光催化无受体析氢芳构化。该反应的特点是可见光和钴共催化原位顺序脱氢形成烯醇甲硅烷基醚,这被认为是一个具有挑战性的过程。这种操作简单的方法能够从环己酮或环己烯酮合成一系列具有不同取代模式的酚类。此外,从环己二酮中获得了多种取代的1,2-、1,3-和1,4-苯二酚,为在温和条件下从简单起始原料合成苯酚提供了通用且直接的方法。