ArticleChemistry (Weinheim an der Bergstrasse, Germany)2026
Synergistic Action of Ascorbic Acid and Readily Accessible NHC^N Ligands for the Oxidation of Gold(I) With Electron-Rich Aryldiazonium Salts.
Article in Chemistry (Weinheim an der Bergstrasse, Germany), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The synergistic action of ascorbic acid and NHC^N ligands enables the challenging oxidation of Au(I) with electron-rich aryldiazonium salts in the absence of a cocatalyst and/or irradiation. EPR, NMR, and x-ray analyses reveal the reaction to be triggered by a radical pathway facilitated by the ligand-assisted stabilization of the Au(III) center. The utility of this synergistic effect was demonstrated in a catalytic arylative carbocyclization, providing access to a 3,4-diaryl-2H-chromene containing two electron-rich aryl groups, a substitution pattern inaccessible by previous protocols.
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