Access to Indole‐Fused Benzannulated Medium‐Sized Rings through a Gold(I)‐Catalyzed Cascade Cyclization of Azido‐Alkynes
作者:Luca C. Greiner、Shinsuke Inuki、Norihito Arichi、Shinya Oishi、Rikito Suzuki、Tomohiro Iwai、Masaya Sawamura、A. Stephen K. Hashmi、Hiroaki Ohno
DOI:10.1002/chem.202101824
日期:2021.9.9
Because benzannulated and indole-fused medium-sized rings are found in many bioactive compounds, combining these fragments might lead to unexplored areas of biologically relevant and uncovered chemical space. Herein is shown that α-imino gold carbene chemistry can play an important role in solving the difficulty in the formation of medium-sized rings. Namely, phenylene-tethered azido-alkynes undergo
因为在许多生物活性化合物中发现了苯并环化和吲哚稠合的中等大小的环,将这些碎片结合起来可能会导致未探索的生物相关区域和未发现的化学空间。本文表明,α-亚氨基金卡宾化学可以在解决中等尺寸环形成困难方面发挥重要作用。即,亚苯基系链的叠氮炔烃通过形成金卡宾中间体进行芳基化环化,得到苯并环化吲哚稠合的中等大小的四环化合物。这些反应允许一系列不同的芳基取代模式,并有效地获得这些原本难以获得的中等大小的环。该研究还证明了半空心形 C-dtbm 配体用于构建九元环的可行性。