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Herein, for the first time, we disclose the migratory insertion of alkynes into Au(III)‒C bonds in a catalytic fashion. Experimental results clearly suggest that the migratory insertion pathway predominates over the π-activation pathway - a finding further supported by the Density Functional Theory (DFT) calculations. The observed regioselectivity underscores the distinct advantages and complementarity of gold catalysis in comparison to palladium catalysis.
Das et al. (Thu,) studied this question.