Iridium-Catalyzed Annulation of N-Arylcarbamoyl Chlorides with Internal Alkynes
摘要:
An iridium complex successfully catalyzed the annulation of various N-arylcarbamoyl chlorides with internal alkynes to afford 2-quinolones in good to excellent yields. The present reaction is widely applicable to substrates with various functionalities. An amide-iridacycle complex was isolated, and it is likely that such an iridacycle species is a key intermediate in the catalytic reaction.
Rh-catalyzed aerobic oxidative cyclization of anilines, alkynes, and CO
作者:Xinyao Li、Jun Pan、Hao Wu、Ning Jiao
DOI:10.1039/c7sc02181j
日期:——
Transition-metal-catalyzed oxidative C-H cyclization of anilines has been an attractive and powerful strategy for the efficient construction of N-heterocycles. However, the primary and tertiary anilines are rarely employed in this strategy due to the relatively unstability with strong oxidants or the presence of three C-N bonds. By using aerobic oxidative protocol, we describe here a novel Rh-catalyzed
Rh-Catalyzed Construction of Quinolin-2(1<i>H</i>)-ones via C–H Bond Activation of Simple Anilines with CO and Alkynes
作者:Xinyao Li、Xinwei Li、Ning Jiao
DOI:10.1021/jacs.5b05843
日期:2015.7.29
A novel and efficient Rh-catalyzed Carbonylation and annulation of simple anilines with CO and alkynes through N-H and CH bond activation for the direct synthesis of quinolin-2(1H)-ones has been developed. Simple anilines without preactivation, broad substrate scope with hetero/polycycles, and high-value products make this protocol very-practical and attractive. A key rhodacycle complex was isolated and well-characterized.