A Copper-Catalyzed Aerobic [1,3]-Nitrogen Shift through Nitrogen-Radical 4-<i>exo</i>
-trig Cyclization
作者:Yan Li、Rui Wang、Tao Wang、Xiu-Fen Cheng、Xin Zhou、Fan Fei、Xi-Sheng Wang
DOI:10.1002/anie.201709894
日期:2017.11.27
shift catalyzed by copper diacetate under an oxygen atmosphere (1 atm) has been developed for the construction of a diverse range of indole derivatives from α,α‐disubstituted benzylamine. In this reaction, oxygen was used as a clean terminal oxidant, and water was produced as the only by‐product. Five inert bonds were cleaved, and two C−N bonds and one C−C double bond were constructed in one pot during
在氧气氛(1个大气压)下,由二乙酸铜催化的新型[1,3]-氮自由基转化已被开发出来,用于从α,α-二取代的苄胺中构建各种吲哚衍生物。在该反应中,氧气用作清洁的终端氧化剂,而水是唯一的副产物。在该转化过程中,五个惰性键被裂解,并且在一个罐中构建了两个C-N键和一个C-C双键。这种独特的方法证明了其对生物活性天然产物和药物的后期修饰的广泛应用潜力。机理研究表明,氨基自由基在苯环上的独特的4- exo- trig环化涉及催化循环。