A simple and efficient visible-light-induced methodology has been developed for the selective synthesis of dihydro-4H-furo[3,2-c]chromen-4-one derivatives via dehydrogenative coupling reaction. The methodology is highly useful for the synthesis of varieties of dihydro-4H-furo[3,2-c]chromen-4-ones from readily accessible reactants under oxygen atmosphere. Importantly, the additive-free approach has
开发了一种简单有效的可见光诱导方法,用于通过脱氢偶联反应选择性合成 dihydro-4 H -furo[3,2- c ]chromen-4-one 衍
生物。该方法对于在
氧气气氛下从容易获得的反应物合成各种二氢-4 H-
呋喃[3,2- c ]chromen-4-ones 非常有用。重要的是,这种转变也证明了无添加剂的方法。机理研究的结果表明,这种脱氢反应是通过自由基途径进行的。此外,合成的 dihydro-4 H -furo[3,2- c ]chromen-4-one 已转化为不同的 4 H-furo[3,2- c ]chromen-4-ones 通过简单的协议。