AbstractAn in situ generated photoactive copper(I)‐complex‐catalyzed aziridination reaction of cyclic N‐sulfonyl imines with α‐aryl‐substituted vinyl azides irradiated by blue‐LEDs light is reported for the first time. This novel SET process represents a mild, sustainable, and pragmatic method for accessing synthetically resourceful sulfamidate‐fused aziridines in acceptable chemical yields with excellent diastereoselectivities. Delightedly, pharmacologically attractive benzo[f][1,2,3]oxathiazepine dioxides and fused isoxazoline frameworks were achieved through our newly developed metal‐free based ring‐expansion techniques, highlighting the synthetic value of accessed aziridines. Finally, the possible mechanism for [2+1] aza‐cyclization was presented based on the conduction of a series of control experiments.
摘要 首次报道了一种原位生成的光活性
铜(I)络合物催化的环状 N-磺
酰亚胺与α-芳基取代的
乙烯基叠氮化物在蓝光 LED 照射下的氮化反应。这种新颖的
SET 工艺是一种温和、可持续和实用的方法,能以可接受的
化学收率和优异的非对映选择性获得合成资源丰富的
氨基磺酰基融合
氮丙啶。令人欣喜的是,通过我们新开发的基于无
金属的扩环技术,实现了具有药理学吸引力的苯并[f][1,2,3]氧
硫杂环庚烷二氧化物和融合
异噁唑啉框架,凸显了所获得的
氮丙啶类化合物的合成价值。最后,在一系列对照实验的基础上,介绍了[2+1]偶氮环化的可能机制。