An operationally simple and efficient copper‐catalyzed three‐component tandem reaction of terminal alkynes, diazo compounds and amines to yield β‐enamino esters is described. This straightforward protocol takes place rapidly with a wide range of substrates and gives the desired β‐enamino esters in good to excellent yields. Preliminary mechanistic studies suggested that the reaction probably proceeds
描述了一种操作简单有效的
铜催化末端
炔烃,重氮化合物和胺的三组分串联反应,生成β-烯
氨基酯的方法。这种简单的方法可以在多种底物上快速发生,并以良好或极好的收率得到所需的β-烯胺酯。初步的机理研究表明,该反应可能是通过Cu催化的正式C–H插入而进行的,以生成炔酸中间体,然后该中间体被胺截留,生成β-烯
氨基酯。