Redox-Neutral Cobalt(III)-Catalyzed C–H Activation/Annulation of α,β-Unsaturated Oxime Ether with Alkyne: One-Step Access to Multisubstituted Pyridine
作者:Smruti Ranjan Mohanty、Bedadyuti Vedvyas Pati、Shyam Kumar Banjare、Gopal Krushna Das Adhikari、Ponneri Chandrababu Ravikumar
DOI:10.1021/acs.joc.0c02558
日期:2021.1.1
A redox neutral Co(III)-catalyzed annulation of α,β-unsaturated oxime ether with alkyne has been reported. Multisubstituted pyridines were synthesized in good yields without the use of any heavy metal oxidants. The developed methodology tolerates a variety of functional groups. Notably, this transformation has been applied to the late-stage modification of the bioactive molecule dehydropregnenolone
据报道,α,β-不饱和肟醚与炔烃的氧化还原中性Co(III)催化环化。多取代的吡啶以高收率合成,无需使用任何重金属氧化剂。所开发的方法可以容忍各种功能组。值得注意的是,该转化已应用于生物活性分子脱氢孕烯醇酮的后期修饰。