Bimetallic zinc complex--active species in coupling of terminal alkynes with aldehydes via nucleophilic addition/Oppenauer oxidation.

A mechanistic study on the zinc-promoted coupling between aldehydes and terminal alkynes via nucleophilic addition/Oppenauer oxidation using operando IR, XANES/EXAFS techniques and DFT calculations was demonstrated. It was determined that a bimetallic zinc complex was the active species.

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