The high-yielding method has a good functional group tolerance.
The high-yielding method has a good functional group tolerance.
via a multicomponent reaction strategy
The Pd/Cu-catalyzed reaction of xanthenes (I) with arenes (II) gives rise to 9-aryl-9H-xanthenes (III) or 9,9-diaryl-xanthenes (VI) depending on the reaction time and temperature.
A newly synthesized magnetic nanoparticles-supported 4-(dimethylamino)pyridine (DMAP)-based catalyst is used as a robust heterogeneous organocatalyst in organic transformations as the acylation of hydroxyl and amino functionalized substrates under mild and solvent-free conditions.
An efficient Bi(OTf)3-catalyzed addition reaction for accessing 2H-chromene-2-carboxamide derivatives is reported.
isolation and structure elucidation
The title reagent is synthesized from gaseous hexafluoroacetone and (L)-methylproline on a gram scale.