Friendly competition: A three‐component reaction system composed of calcium carbide, an aryl aldehyde, and an amine gave enaminones or propargylamines (see picture) in a predictable manner through competitive pathways. The system enables the cost‐efficient synthesis of a variety of enaminones from readily accessible small molecules and demonstrates the versatility of the acetylide ion, which can be used to bridge electrophiles and nucleophiles.

中文翻译：

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乙醛离子（C22-）作为连接亲电试剂和亲核试剂的合成子：一种简单的烯胺酮合成方法

友好竞争：由碳化钙，芳基醛和胺组成的三组分反应体系通过竞争途径以可预测的方式产生了烯胺酮或炔丙基胺（见图）。该系统能够从易于获取的小分子中经济高效地合成多种烯胺，并证明了乙炔离子的多功能性，可用于桥接亲电试剂和亲核试剂。