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Nucleo-Palladation-Triggering Alkene Functionalization: A Route to γ-Lactones.
An unprecedented strategy for the highly effective synthesis of γ-lactones from homoallylic alcohols was achieved by palladium catalysis in one step with good yields with excellent functional group tolerance and high chemoselectivity under mild conditions. Expand
Copper-catalyzed coupling of oxime acetates with sodium sulfinates: an efficient synthesis of sulfone derivatives.
A novel method for sulfone derivatives by oxidative coupling with sodium sulfinates and oxime acetates using copper as catalyst is reported, which resulted in various sulfonylvinylamines and β-ketosulfones being obtained in good to excellent yields under the optimized reaction conditions. Expand
One-pot silver-catalyzed and PIDa-mediated sequential reactions: synthesis of polysubstituted pyrroles directly from alkynoates and amines.
The addition/oxidative cyclization of alkynes with amines in the presence of AgBF(4) catalyst and PIDA oxidant leads to polysubstituted pyrroles. The reaction corresponds to the construction of aExpand
Copper-catalyzed intermolecular oxidative [3 + 2] cycloaddition between alkenes and anhydrides: a new synthetic approach to γ-lactones.
A new copper-catalyzed oxidative [3 + 2] cycloaddition of alkenes with anhydrides using oxygen as the sole oxidant to afford γ-lactones has been developed. This catalyzed cyclization process has aExpand
An efficient synthesis of polysubstituted pyrroles via copper-catalyzed coupling of oxime acetates with dialkyl acetylenedicarboxylates under aerobic conditions.
A Cu-catalyzed [3+2]-type condensation reaction of oxime acetates and dialkyl acetylenedicarboxylates that provides highly substituted pyrroles under aerobic conditions is described. The newly formedExpand
Regioselective C-H Hydroarylation of Internal Alkynes with Arenecarboxylates: Carboxylates as Deciduous Directing Groups.
This reaction variant, which does not proceed via intermediate formation of 2-vinylbenzoic acids, opens up a regioselective, waste-minimized synthetic entry to vinylarenes. Expand
Palladium-catalyzed cascade annulation to construct functionalized β- and γ-lactones in ionic liquids.
A highly efficient and mild palladium-catalyzed, one-pot, four-step cascade annulation has been developed to afford functionalized β- and γ-lactones in moderate to good yields with high regio- andExpand
Copper-catalyzed sulfonamides formation from sodium sulfinates and amines.
Detailed mechanistic studies showed that this transformation may go through a single electron transfer (SET) pathway and provide efficient and robust synthesis of functional sulfonamides in good yields and excellent chemoselectivity. Expand
Copper-catalyzed oxidative [2 + 2 + 1] cycloaddition: regioselective synthesis of 1,3-oxazoles from internal alkynes and nitriles
A robust and regioselective copper(II)-catalyzed cycloaddition of internal alkynes and nitriles providing an effective access to oxazole fragments is reported herein. Water substantially participatedExpand