<i>N</i>-Tosylhydrazone directed annulation <i>via</i> C–H/N–N bond activation in Ru(<scp>ii</scp>)/PEG-400 as homogeneous recyclable catalytic system: a green synthesis of isoquinolines
作者:Dewal S. Deshmukh、Bhalchandra M. Bhanage
DOI:10.1039/c8ob01082j
日期:——
of isoquinolines using Ru(II)/PEG-400 as a homogeneous recyclable catalytic system has been demonstrated. N-Tosylhydrazone, a rarely explored directing group, has been successfully employed for an annulation type of reaction with alkynes via C–H/N–N activation. A short reaction time with a simple extraction procedure, a wide substrate scope with high yields of products, easily prepared substrates, biodegradable
已经证明了使用Ru(II)/ PEG-400作为均相可循环催化体系合成异喹啉的绿色可持续方法。N-甲苯磺酰,是一个很少探索的指导基团,已成功地用于通过C–H / N–N活化与炔烃形成环型反应。反应时间短,萃取步骤简单,底物范围广,产品收率高,易于制备的底物,可生物降解的溶剂以及可扩展至克级的可扩展性,可提高拟议方案的效率和可持续性。此外,昂贵的基于钌的均相催化体系可重复使用多达四个连续循环,而不会损失其活性。