One-Pot Allan-Robinson/Friedländer Route to Chromen-/Quinolin-4-ones through the Domino Acetylative Cyclisation of 2-Hydroxy-/2-Aminobenzaldehydes
作者:Vijai K. Rai、Fooleswar Verma、Ganeshwar P. Sahu、Manorama Singh、Ankita Rai
DOI:10.1002/ejoc.201701435
日期:2018.1.31
A domino reaction between 2‐hydroxy‐/2‐aminobenzaldehydes and α‐haloketones gives chromen‐4‐ones and quinolin‐4‐ones in good to excellent yields. This method represents a new extension of the Allan–Robinson and Friedländer reactions, and uses N‐heterocyclic‐carbene catalysis. This approach has the advantages of operational simplicity, ambient reaction conditions, and no by‐product formation.
2-羟基/ 2-氨基苯甲醛与α-卤代酮之间的多米诺反应使chromen-4-ones和quinolin-4-ones的产率高到极好。该方法代表了Allan-Robinson和Friedländer反应的新扩展,并使用了N-杂环-卡宾催化。这种方法的优点是操作简单,环境反应条件好,并且不会形成副产物。