One-Pot Palladium-Catalyzed Synthesis of Selectively Substituted Phenanthridines by Sequential Aryl-Aryl and Heck Couplings, Aza-Michael and Retro-Mannich Reactions
作者:Nicola Della Ca'、Elena Motti、Antonio Mega、Marta Catellani
DOI:10.1002/adsc.201000114
日期:——
A catalytic synthesis of selectively substituted phenanthridines is achieved through a reaction sequence involving palladium/norbornene‐catalyzed unsymmetrical aryl‐aryl and Heck couplings followed by aza‐Michael and retro‐Mannich reactions. In spite of the many steps involved the method is very simple and allows the formation of selectively substituted phenanthridines under mild conditions in a straightforward
通过涉及钯/降冰片烯催化的不对称芳基-芳基和Heck偶联的反应序列,然后进行氮杂-迈克尔和逆曼尼希反应,可实现选择性取代的菲啶的催化合成。尽管涉及许多步骤,但该方法非常简单,并允许在温和条件下以简单易用的一锅反应从容易获得的芳基碘化物和溴化物开始形成选择性取代的菲啶。