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自有机化学诞生以来，如何高效、温和地实现碳碳不饱和键之间的转化始终是实验室与工业界关注的核心。烯烃作为石油化工的大宗基础产品，来源极广且价格低廉，而炔烃作为具有高能三键的活性分子，在点击化学（click chemistry）、药物研发和材料科学中扮演着不可替代的角色。然而，这种结构上的“亲缘关系”在合成实践中却面临着长达160余年的“技术断层”。

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