[C8dabco]Br: a mild and convenient catalyst for intramolecular cyclization of 2-aminochalcones to the corresponding 2-aryl-2,3-dihydroquinolin-4(1H)-ones
作者:Chamseddine Derabli、Sara Mahdjoub、Raouf Boulcina、Boudjemaa Boumoud、Hocine Merazig、Abdelmadjid Debache
DOI:10.1007/s10593-016-1840-8
日期:2016.2
A new and convenient synthesis of 2-aryl-2,3-dihydroquinolin-4(1H)-ones has been described using the intramolecular cyclization of 2-aminochalcones catalyzed by 1-octyl-4-aza-1-azoniabicyclo[2.2.2]octane bromide ([C(8)dabco]Br). Recyclability of the catalyst, high yields, simple isolation of the products, and high atom economy are the noteworthy aspects of the protocol.