Selective radical cascade (4+2) annulation with olefins towards the synthesis of chroman derivatives <i>via</i> organo-photoredox catalysis
作者:Zhipeng Guan、Xingxing Zhong、Yayu Ye、Xiangwei Li、Hengjiang Cong、Hong Yi、Heng Zhang、Zhiliang Huang、Aiwen Lei
DOI:10.1039/d2sc00903j
日期:——
highly selective manner. Moreover, the present strategy can be used in the late-stage functionalization of natural product derivatives and biologically active compounds, which demonstrated the potential application. This method is complementary to the traditional Diels–Alder [4 + 2] cycloaddition reaction of ortho-quinone methides and electron-rich dienophiles, since electron-deficient dienophiles were
由于色满框架在药物化学中的重要性,为这些结构开发新的合成方法越来越引起化学家的兴趣。这里报道了一种新的 (4 + 2) 自由基环化方法,用于通过光催化构建这些功能性六元框架。该协议具有温和的反应条件,可随时获得N-羟基邻苯二甲酰亚胺酯和缺电子烯烃以高选择性方式转化为各种有价值的色满。此外,本策略可用于天然产物衍生物和生物活性化合物的后期功能化,显示出潜在的应用。该方法是对邻醌甲基化物和富电子亲双烯体的传统 Diels-Alder [4 + 2] 环加成反应的补充,因为缺电子亲双烯体顺利转化为所需的色满。