Pd-catalyzed oxidative cross-coupling of terminal alkynes with ene-yne-ketones has been developed, in which the ene-yne-ketones are served as carbene precursors and metal carbene migratory insertion process is the key step for C–C bond formation.
A ZnCl2 catalyzed selective cross-coupling of enynones and diazo compounds, leading to a variety of 2-alkenylfurans, is reported.