Synthesis of Highly Reactive Ketenimines via Photochemical Rearrangement of Isoxazoles
作者:Cormac Bracken、Marcus Baumann
DOI:10.1021/acs.orglett.3c02556
日期:2023.9.8
as building blocks in organic synthesis; however, the effective preparation of these versatile entities remains a synthetic challenge. Here we report a continuous photochemical process that generates ketenimines via skeletal rearrangement of trisubstituted isoxazoles. The resulting flow process is noteworthy, as it provides for the first time a straightforward entry into these ketenimines that were
乙烯酮亚胺是高度亲电子的物质,作为有机合成的基础材料具有多种应用;然而,有效准备这些多功能实体仍然是一项综合挑战。在这里,我们报道了通过三取代异恶唑的骨架重排生成烯酮亚胺的连续光化学过程。由此产生的流动过程值得注意,因为它首次提供了直接进入这些乙烯亚胺的方法,而这些乙烯亚胺以前只能通过光谱观察到。通过可分离的烯酮亚胺将异恶唑转化为药学相关的吡唑,证明了这种杂环转位反应方法的价值。