Synthesis of Dihydroindoloisoquinolines through Copper‐Catalyzed Cross‐Dehydrogenative Coupling of Tetrahydroisoquinolines and Nitroalkanes
作者:Iris Martín‐García、Francisco Alonso
DOI:10.1002/chem.201805137
日期:2018.12.17
organic chemistry; the corresponding β‐nitroamines are generally formed irrespective of the catalysis and activation mode utilized. A quite distinct behavior was observed when the reaction was catalyzed by copper nanoparticles supported on titania, leading to the formation of 5,6‐dihydroindolo[2,1‐a]isoquinolines with high selectivity and good yields. A meticulous reaction mechanism is proposed, based
最近,四氢异喹啉与硝基烷烃的交叉脱氢反应已成为有机化学中广泛研究的反应。无论使用何种催化和活化方式,通常都会形成相应的β-硝基胺。当负载在二氧化钛上的铜纳米颗粒催化反应时,观察到非常不同的行为,导致形成具有高选择性和高收率的5,6-二氢吲哚并[2,1- a ]异喹啉。在实验的基础上,提出了一种精细的反应机理,并讨论了这些化合物的关键化学修饰。显然,催化剂的有效性在于其纳米结构的特性,胜过了商用铜催化剂的活性。