Efficient iron/copper cocatalyzed alkynylation of aryl iodides with terminal alkynes

We developed a highly efficient and practical protocol for the coupling of terminal alkynes with aryl iodides that is catalyzed by inexpensive and environmentally benign Fe/Cu. A broad spectrum of substrates can participate in the process effectively to produce desired products in good yields. The versatility, generality, low cost, and environmental friendliness, in combination with exceptionally high reaction rates, render this method particularly attractive for industrial applications.