Abstract
A green and simple method for the synthesis of the title compounds 4 by the reaction of 5-chloroacetyl-8-hydroxyquinoline (1), pentane-2,4-dione (2), and amines 3 in the presence of a catalytic amount of 1,4-diazabicyclo[2.2.2]octane at 60°C is described. The procedure is amenable for the synthesis of other substituted pyrroles. Short reaction time, environmentally friendly procedure, and excellent yields are the main advantages. The structures of products 4a–n were characterized by 1H NMR, IR, and MS spectra.
摘要
本文介绍了一种绿色简单的方法,通过在60°C下使用1,4-二氮杂双环[2.2.2]辛催化剂的存在下,将5-氯乙酰基-8-羟基喹啉(1)、戊二酮(2)和胺类化合物(3)反应,合成了标题化合物4。该方法适用于合成其他取代吡咯类化合物。短反应时间、环保的过程和优异的收率是该方法的主要优点。产品4a-n的结构通过1H NMR、IR和MS光谱进行了表征。