Microwave-assisted solvent-free tandem cross-metathesis/intramolecular isomerization-cyclization reaction for the synthesis of <i>N</i>-substituted pyrroles: It’s computational analysis
作者:Arif Khan、Asher M. Siddique、Majeed Shaikh、Imran A. Khan、Syed Shafi
DOI:10.1080/00397911.2022.2039710
日期:2022.2.16
Abstract The microwave-assisted solvent-free reaction has been developed for the rapid synthesis of different pyrrole derivatives using cross-metathesis (CM) between N-allylamines and α, β-unsaturated carbonyl compounds with moderate to good yields. This method is solvent free, facile, rapid, and high yielding reaction for the synthesis N-substituted pyrrole derivatives. The effect of microwave irradiation
摘要 微波辅助无溶剂反应已被开发用于使用N-烯丙胺和 α, β-不饱和羰基化合物之间的交叉复分解 (CM) 快速合成不同的吡咯衍生物,产率适中至良好。该方法无溶剂、简便、快速、收率高,可用于合成N-取代吡咯衍生物。微波辐射的效果与通过一系列比较的交叉复分解反应证明了经典的热条件。在目前的环保方法中,无溶剂条件和微波辐射的结合导致反应时间显着减少,产率提高。计算分析表明,微波辐照条件有利于钌环丁烷(RuG到RuH)的相互转化,比常规加热高约 10 倍。已通过 DFT 计算解释了在哌嗪酮(氮杂-迈克尔产物)上仅形成吡咯环系统(环化-芳构化级联反应)。