一价铜作为催化剂，端基炔和炔基卤化物反应生成非对称性二炔的反应

反应机理：

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Copper(I) Iodide Catalyzed Cross-Coupling Reaction of Terminal Alkynes with 1-Bromoalkynes: A Simple Synthesis of Unsymmetrical Buta-1,3-diynes
S. Wang, L. Yu, P. Li, L. Meng, L. Wang, Synthesis, 2011, 1541-1546.

Bulky Trialkylsilyl Acetylenes in the Cadiot-Chodkiewicz Cross-Coupling Reaction
J. P. Marino, H. N. Nguyen, J. Org. Chem., 2002, 67, 6841-6844.

End-Cap Stabilized Oligoynes: Model Compounds for the Linear sp Carbon Allotrope Carbyne
T. Gibtner, F. Hampel, J.-P.Gisselbrecht, A. Hirsch, Chem. Eur. J., 2002, 68, 408-432.

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