Base‐Free Copper‐Catalyzed Azide‐Alkyne Click Cycloadditions (CuAAc) in Natural Deep Eutectic Solvents as Green and Catalytic Reaction Media**

Click copper-catalyzed azide-alkyne cycloaddition reactions (CuAAc) were performed in recyclable natural deep eutectic solvents (NADESs) as green and catalytic solvents. No reducing agent was needed thanks to the NADESs’ activity and the reactions did not need any base as the alkyne hydrogen was involved in the H-bonds of the...