Reactions of <i>N</i>,3-diarylpropiolamides with arenes under superelectrophilic activation: synthesis of 4,4-diaryl-3,4-dihydroquinolin-2(1<i>H</i>)-ones and their derivatives
作者:Larisa Yu Gurskaya、Diana S Belyanskaya、Dmitry S Ryabukhin、Denis I Nilov、Irina A Boyarskaya、Aleksander V Vasilyev
DOI:10.3762/bjoc.12.93
日期:——
The reaction of 3-aryl-N-(aryl)propiolamides with arenes in TfOH at room temperature for 0.5 h led to 4,4-diaryl-3,4-dihydroquinolin-2-(1H)-ones in yields of 44-98%. The obtained dihydroquinolinones were further transformed into the corresponding N-acyl or N-formyl derivatives. For the latter, the superelectrophilic activation of the N-formyl group by TfOH in the reaction with benzene resulted in the
Fe(III)-Catalyzed Tandem Cyclization of Phenylpropiolamides with 3-Formylchromones for the Construction of 2-Pyridones
作者:Hyo Seon Sim、Hari Datta Khanal、Yong Rok Lee
DOI:10.1021/acs.joc.2c01459
日期:2022.10.7
atom-economic iron(III)-catalyzed three-component heteroannulation reaction between phenylpropiolamides, 3-formylchromones, and water is described for the construction of diversely multifunctionalized 2-pyridones. This protocol allows rapidaccess to a variety of 2-pyridones bearing an ortho-hydroxybenzoyl and a benzoyl scaffold under operationally simple conditions. The synthetic utility of the synthesized 2-pyridone