Synthesis and Cyclization of 8-Formyl-2-(phenoxymethyl)quinoline-3-carboxylic Acids
作者:Wentao Gao、Zhigang Zhao、Yang Li、Yan Yan、Feng Li
DOI:10.1002/cjoc.201100420
日期:2012.5
A facile synthesis of a series of new quinoline‐8‐carbaldehyde compounds, namely 8‐formyl‐2‐(phenoxymethyl)quinoline‐3‐carboxylic acids (4a–4h) and 13‐oxo‐6,13‐dihydro[1]benzoxepino[3,4‐b]quinoline‐8‐carbaldehyde (5a–5g) is described, involving the one‐pot synthesis reaction of ethyl 2‐(chloromethyl)‐8‐formylquinoline‐3‐carboxylate (3) with substituted phenols followed by the intramolecular cyclization
轻松合成一系列新的喹啉-8-甲醛化合物,即8-甲酰基-2-(苯氧基甲基)喹啉-3-羧酸(4a - 4h)和13-氧代-6,13-二氢[1]苯并庚啶[3,4- b ]喹啉-8-甲醛(5a - 5g)的描述涉及2-(氯甲基)-8-甲酰基喹啉-3-羧酸乙酯(3)与取代酚的一锅合成反应,然后是通过多磷酸(PPA)处理进行分子内环化反应。喹啉-8-甲醛4a - 4h和5a - 5g是新颖的,其结构得到IR的支持,11 H NMR,13 C NMR,MS和元素分析。