Direct defluorinative amidation–hydrolysis reaction of <i>gem</i>-difluoroalkenes with <i>N</i>,<i>N</i>-dimethylformamide, and primary and secondary amines
作者:Biyun Wang、Xianghu Zhao、Qingyun Liu、Song Cao
DOI:10.1039/c8ob02322k
日期:——
A novel and efficient method for the synthesis of arylacetamides by the reactions of gem-difluoroalkenes with N,N-dialkylformamides, and primary and secondary amines with the assistance of KOtBu and water was developed.
开发了一种新颖有效的合成方法,该方法通过宝石-二氟烯烃与N,N-二烷基甲酰胺以及伯胺和仲胺在KO t Bu和水的反应下合成芳基乙酰胺。
Synthesis of α-ketoamides using potassium superoxide (KO2) as an oxidizing agent
A simple and convenient method for the synthesis of α-ketoamides by the oxidation of aryl acetamides using potassium superoxide (KO2) as an oxidizingagent is disclosed here. The scope of the developed method is successfully tested with fifteen substrates. In addition, the utility of method has been demonstrated by synthesizing an orexin receptor antagonist, a medicinally interesting compound.
isocyanates at the benzylic position upon irradiation with visiblelight in the presence of an iridium photoredox catalyst, a bromide anion, and a nickel catalyst, producing N-substituted α-aryl amides. An analogous carbamoylation reaction of aliphatic C–H bonds of alkanes took place when UV light and a diaryl ketone were used instead of visiblelight and the iridium complex. The present reaction offers