Herein, we disclose a transition-metal-free reaction system that enables α-cyanation of sulfonamides through C–H bond cleavage for the preparation of α-amino nitriles, including difficult-to-access all-alkyl α-tertiary scaffolds. More than 50 substrate examples prove a wide functional group tolerance. Additionally, its synthetic practicality is highlighted by gram-scalability and the late-stage modification
在这里,我们公开了一种无过渡
金属的反应体系,该体系可使磺酰胺通过C–H键断裂进行α-
氰化,以制备α-
氨基腈,包括难以接近的全烷基α-叔骨架。超过50个底物实例证明了广泛的官能团耐受性。另外,其合成实用性通过克可缩放性和天然化合物的后期修饰得到突出。机理实验表明,该过程涉及通过碱促进的HF的消除而原位形成
亚胺中间体。