organocatalysts that are well-documented in catalyzing carbonyl compounds to realize transformations. However, they are rarely applied in alkyne activations. Herein, we disclose an efficient amine/Rh(II) dual catalytic system to reassemble the C≡C bond of conjugated alkynes with cyclopropenes, which enables construction of α-vinyldicarbonyl derivatives under very mild reaction conditions. Vinyl cyclopropylamines