Diverse Reactivity in a Rhodium(III)-Catalyzed Oxidative Coupling of<i>N</i>-Allyl Arenesulfonamides with Alkynes
作者:Dongqi Wang、Fen Wang、Guoyong Song、Xingwei Li
DOI:10.1002/anie.201206918
日期:2012.12.3
Olefinic CH activation of N‐allyl sulfonamides in the presence of [RhCp*Cl2}2] (Cp*=Me5C5) enabled their oxidative coupling with alkynes to generate 1,2‐dihydropyridines, pyridines, and cyclopentenones (see scheme; Ts=p‐toluenesulfonyl). The type of highly substituted product formed was controlled by the substitution of the allyl group and the reaction conditions.
烯Ç ħ活化的ñ -烯丙基中的存在磺酰胺[RHCP *氯2 } 2 ](CP * =我5 Ç 5)启用与炔其氧化偶合,以生成1,2-二氢吡啶,吡啶,和环戊烯酮(参见方案; Ts =对甲苯磺酰基)。形成的高度取代的产物的类型通过烯丙基的取代和反应条件来控制。