Synthesis of functionalized 1,3-indandione containing spirocyclopentanes has been achieved in a highly diastereoselective manner in presence of catalytic amount of DABCO by the reaction of 2-(2′-ketoalkyl)-1,3-indandiones with nitrostyrenes.
A Co(III)-catalyzed C–H functionalization/spiroannulation of 1,3-indandione with alkenes has been developed for the synthesis of spiroindenes. This efficient protocol features excellent functional group tolerance and high atom- and step-economy.
We report the synthesis of a new family of chromophores based on benzothiazole, indandione, and tricyanofuran moieties, forming aromatic neutral precursors or negatively charged quinoidal counterparts.
A copper-mediated direct insertion of alkenes into unstrained ring 2-aryl-1,3-indandiones provides a one-carbon ring expansion strategy for 1,4-naphthoquinone synthesis.
A palladium-catalyzed coupling reaction has been developed for the synthesis of quaternary alkyl products through the reaction of olefins with diversely functionalized 1,3-dicarbonyls.