A convenient protocol for the preparation of 4(5)-acyl-2-aminoimidazoles and vinylogues is disclosed employing a crystalline imidazole-derived iminophosphorane as the coupling partner in Heck and Sonogashira reactions. For the first time, derivatives of urocanic acid bearing a free amino group in the 2′-position are described.
本研究揭示了一种制备 4(5)-酰基-
2-氨基咪唑和
乙烯基对映体的简便方案,该方案在赫克反应和索诺加希拉反应中使用了一种晶体
咪唑衍生的亚
氨基
磷烷作为
偶联剂。首次描述了在 2′位带有游离
氨基的
尿囊酸衍
生物。