Harnessing selective PET and EnT catalysis by chlorophyll to synthesize <i>N</i>-alkylated quinoline-2(1<i>H</i>)-ones, isoquinoline-1(2<i>H</i>)-ones and 1,2,4-trioxanes
作者:Saira Banu、Kuldeep Singh、Shaifali Tyagi、Anjali Yadav、Prem P. Yadav
DOI:10.1039/d1ob01865e
日期:——
alcohols as substrates, affording their aerobic oxidation under green reaction conditions. The mechanistic investigations affirm that the catalytic cycle follows the electron-transfer pathway in carrying out the oxidation of N-alkyl(iso)quinolinium salts. Furthermore, the method provides an environmentally benign, simple reaction strategy for organic transformations of (N)-heterocycles.
分别通过选择性光诱导电子转移(PET)和能量转移(EnT)实现了喹啉-2(1 H )-酮、异喹啉-1(2 H )-酮和1,2,4-三恶烷的光催化合成,由叶绿素在可见光照射下产生。喹啉-2(1 H )-酮、异喹啉-1(2 H )-酮和1,2,4-三恶烷是具有生物活性的支架,其遵循温和反应方案的合成受到高度追捧。这项工作展示了叶绿素的不同光催化作用,即喹啉或异喹啉的电子转移以及以烯丙醇为底物的能量转移,在绿色反应条件下提供有氧氧化。机理研究证实,催化循环遵循电子转移途径来进行N-烷基(异)喹啉鎓盐的氧化。此外,该方法为(N)-杂环的有机转化提供了一种环境友好、简单的反应策略。