作者:Jinseong Jeong、Joon Heo、Dongwook Kim、Sukbok Chang
DOI:10.1021/acscatal.0c00884
日期:2020.5.1
Selective dearomative transformation of readily available N-heteroarenes is a powerful tool accessing useful synthetic building units. Described herein is the NHC-catalyzed 1,2-selective hydroboration of quinolines with high functional group tolerance. Dihydroquinoline products could be isolated as their amide derivatives upon in situ N-protection, thus offering high synthetic utility of the current
易于获得的N-杂芳烃的选择性脱芳香转化是访问有用的合成建筑单元的强大工具。本文描述了具有高官能团耐受性的喹啉的NHC催化的1,2-选择性氢硼化。在原位N-保护下,可以将二氢喹啉产物作为其酰胺衍生物分离出来,从而提供了当前方法的高合成效用。组合的实验和计算研究表明,可以通过提出六元过渡态合理化观察到的区域选择性,该六元过渡态应将NHC催化剂,氢硼烷还原剂和质子化喹啉底物结合在一起。