Synthesis of Enantioenriched 5,6-Dihydrophenanthridine Derivatives through retro-Carbopalladation of Chiral<i>o</i>-Bromobenzylamines
作者:Juntao Ye、Aurore Limouni、Sonia Zaichuk、Mark Lautens
DOI:10.1002/anie.201411276
日期:2015.3.2
β‐hydrogen atom has been observed in the Pd‐catalyzed homocoupling reactions of o‐bromobenzylamines, providing an expeditious synthetic route to 5,6‐dihydrophenanthridine derivatives. Furthermore, a highly enantioselective synthesis of 6‐aryl‐substituted 5,6‐dihydrophenanthridines was achieved in a one‐pot manner by taking advantage of Rh and Pd catalysis.
在邻溴苄胺的Pd催化均偶联反应中观察到了在合适的β氢原子存在下的亚胺的逆碳卡巴拉德反应,这为5,6-二氢菲啶衍生物的快速合成提供了途径。此外,利用Rh和Pd的催化作用,通过一锅法实现了对6-芳基取代的5,6-二氢菲啶的高度对映选择性的合成。