Regioselective Synthesis of 1,2- and 1,4-Dihydroquinolines by Palladium-Catalyzed Intramolecular N-Arylation
作者:Kyeong-Yong Park、Jinyong Lee、Seong Jun Park、Jung-Nyoung Heo、Hwan Jung Lim
DOI:10.1002/adsc.201500627
日期:2015.12.14
A series of 1,2- and 1,4-dihydroquinolines has been successfully prepared. The Pd-catalyzed intramolecular N-arylation of Z-enamines, formally prepared by the Horner–Wadsworth–Emmons olefination, proceeded efficiently to furnish the cyclized products. Depending on the cyclization conditions, substituted 1,4-dihydroquinolines and further isomerized 1,2-dihydroquinolines were independently obtained in
已经成功制备了一系列1,2-和1,4-二氢喹啉。Horner-Wadsworth-Emmons烯化反应正式制备的Pd催化的Z-烯胺分子内N-芳基化反应可有效地提供环化产物。取决于环化条件,以高收率独立地获得双取代的1,4-二氢喹啉和进一步的异构化的1,2-二氢喹啉,并具有对双键异构化的优异控制。