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
Carbonylative annulation of unsaturated compounds using molybdenum hexacarbonyl: an efficient synthesis of 2(1H)-quinolones
作者:Farnaz Jafarpour、Asieh Otaredi-Kashani
DOI:10.3998/ark.5550190.p008.531
日期:——
developed in palladium-catalyzed three-component reaction of iodoanilines, unsaturatedcompounds and Mo(CO)6 as a solid carbon monoxide source. The approach allows for smooth construction of biologically interesting 3,4-disubstituted (dihydro)quinolin-2(1H)-ones in presence of catalytic amounts of palladium and avoids the problematic use of gaseous carbon monoxide.
在碘苯胺、不饱和化合物和作为固体一氧化碳源的 Mo(CO)6 的钯催化三组分反应中,开发了一种无配体和 CO 气体的条件。该方法允许在催化量的钯存在下顺利构建具有生物学意义的 3,4-二取代(二氢)喹啉-2(1H)-酮,并避免气态一氧化碳的使用问题。