condensation reactions using various fluorous Mukaiyama reagents, including a novel medium-fluorous strategy, is described. A Mukaiyama reagent bearing a medium-fluorous content tag, between 40 and 60% fluorine by weight, was prepared and examined in ester and amide-forming condensation reactions. At the end of the reactions, the fluorous pyridone by-product was effectively separated from non-fluorous components
A novel, efficient and environmentally friendly synthetic method has been developed for C(sp)-H selenation of arylacetamides with readily available diselenides as selenating reagents at room temperature. This protocol is applicable to a list of wide-ranging arylacetamides and diselenides, and provides various α-selenylated aryl amide derivatives with high yield using choline hydroxide (ChOH) as a green