Synthesis of Highly Fused Pyrano[2,3-<i>b</i>]pyridines via Rh(III)-Catalyzed C–H Activation and Intramolecular Cascade Annulation under Room Temperature
作者:Xu Han、Feng Gao、Chunpu Li、Daqing Fang、Xiong Xie、Yu Zhou、Hong Liu
DOI:10.1021/acs.joc.9b03102
日期:2020.5.15
A facile access to the polycyclic-fused pyrano[2,3-b]pyridines has been established under room temperature via Rh(III)-catalyzed C-H bond activation and intramolecular cascade annulation. This strategy features high efficiency, unique versatility, and generality and it can occur under mild conditions in good to excellent yields. More importantly, this strategy can be extended to the late-stage functionalization
在室温下,通过Rh(III)催化的CH键活化和分子内级联环化反应,已经可以轻松获得多环稠合的吡喃并[2,3-b]吡啶。该策略具有高效,独特的多功能性和普遍性的特点,并且可以在温和条件下以高至优异的产量实现。更重要的是,该策略可以扩展到拥有CN基团的药物的后期功能化。