Synthesis of [5,6]-Bicyclic Heterocycles with a Ring-Junction Nitrogen Atom: Rhodium(III)-Catalyzed C−H Functionalization of Alkenyl Azoles
作者:Kim Søholm Halskov、Howard S. Roth、Jonathan A. Ellman
DOI:10.1002/anie.201703967
日期:2017.7.24
The first syntheses of privileged [5,6]‐bicyclic heterocycles, with ring‐junction nitrogen atoms, by transition metal catalyzed C−H functionalization of C‐alkenyl azoles is disclosed. Several reactions are applied to alkenyl imidazoles, pyrazoles, and triazoles to provide products with nitrogen incorporated at different sites. Alkyne and diazoketone coupling partners give azolopyridines with various
首次公开了通过 C-烯基唑的过渡金属催化的 CH 官能化合成具有环连接氮原子的特殊 [5,6]-双环杂环。对烯基咪唑、吡唑和三唑进行多种反应,以提供在不同位点掺入氮的产物。炔烃和重氮酮偶联伙伴产生具有各种取代模式的唑并吡啶。此外,1,4,2-二恶唑酮偶联配偶体可产生唑并嘧啶。此外,还讨论了反应机制,并通过迭代应用 CH 官能化来快速合成专利候选药物,证明了所开发方法的实用性。