Direct Csp<sup>3</sup>–H methylenation of 2-arylacetamides using DMF/Me<sub>2</sub>NH-BH<sub>3</sub> as the methylene source
作者:Yuting Liu、Chang-Ling Wang、Hui-Min Xia、Zhijuan Wang、Yi-Feng Wang
DOI:10.1039/c9ob00875f
日期:——
A direct Csp3–H methylenation of 2-arylacetamides using DMF/Me2NH-BH3 as the methylene source was developed. The formyl group of DMF delivered the carbon and one hydrogen atoms, and the Me2NH-BH3 donated the remaining one hydrogen atom. This protocol offers a new alternative to make useful 2-arylacrylamides from simple starting materials.
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.