Synthesis of Indenone Derivatives by Rh(III)-Catalyzed C–H Functionalization of Sulfoxonium Ylides with 1,3-Diynes
作者:Sanjeev Kumar、Saiprasad Nunewar、Tharun Kumar Sabbi、Vinaykumar Kanchupalli
DOI:10.1021/acs.orglett.2c01166
日期:2022.5.13
alkynes formally participates in [4 + 2] annulations to deliver the naphthol scaffolds. In contrast, herein we disclose the first Rh(III)-catalyzed C–H activation, followed by redox-neutral [3 + 2] annulation of sulfoxonium ylides with 1,3-diynes, which delivers the alkynated indenone derivatives. This protocol features a good functional group tolerance, a broad substrate scope, moderate to excellent yields
硫鎓叶立德与炔烃的过渡金属催化的 C-H 官能化正式参与 [4 + 2] 环化以提供萘酚支架。相比之下,本文中我们公开了第一个 Rh(III) 催化的 C-H 活化,然后是氧化还原中性 [3 + 2] 与 1,3-二炔的锍叶立德环化,这提供了炔化茚酮衍生物。该协议具有良好的官能团耐受性、广泛的底物范围、中等至优异的产量和温和的反应条件。通过表征催化循环中的关键中间体,通过 ESI-HRMS 支持反应机制。