Copper Mediated Three‐Component Reactions of Alkynes, Azides, and Propargylic Carbonates: Synthesis of 5‐Allenyl‐1,2,3‐Triazoles

A copper‐mediated one‐pot sequential reaction of terminal alkynes, azides, and propargylic carbonates is reported. The three component reaction occurs readily at room temperature to afford a 5‐allenyl‐1,2,3‐triazoles in high yields, providing a straightforward approach to 1,3,5‐trisubstituted triazoles using easily available Cu(I) reagent.