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The present study describes a method for the dicarbofunctionalization of ynamide via a palladium-catalyzed two-component diarylation with aryl boronic acids. The reaction involves a consecutive transmetalation of the aryl boronic acids with a Pd(II)-complex making the transformation stereoselective. Importantly, the reaction proceeds under mild conditions and tolerates a broad range of functional groups. Control experiments validate the role of the oxidant (useful for catalyst regeneration) in the reaction mechanism.

Graphical abstract: Two-component symmetrical diarylation of ynamides

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