Synthesis and Antibacterial Activities of Some Quinoline Substituted Quinoxaline Derivatives
作者:G. Anukumari、M. Anand Rao、P.K. Dubey
DOI:10.14233/ajchem.2015.18261
日期:——
p-Anisidine (1) on treatment with ethyl acetoacetate gave 1-(ethyl-3-[(4-methoxyphenyl)imino]butanoate) (2), which on cyclization in hot Dowtherm oil gave 4-hydroxy-6-methoxy-2-methylquinoline (3). The latter, on chlorination with SO2Cl2, gave 3-chloro-4-hydroxy-6-methoxy-2-methylquinoline (4) which with POCl3 was transformed into 3,4-dichloro-6-methoxy-2-methylquinoline (5). Treatment of compound 5 with o-phenylenediamine gave the novel product 2-methoxy-6-methyl-7,7a,11a,12-tetrahydroquinolino[3,4-b]quinoxaline (6) whose structure was assigned based on spectral data.
对甲氧基苯胺 (1) 经乙酰乙酸乙酯处理后得到 1-(乙基-3-[(4-甲氧基苯基)亚氨基]丁酸酯) (2),在热的 Dowtherm 油中环化后得到 4-羟基-6-甲氧基-2-甲基喹啉 (3)。后者在用 SO2Cl2 氯化后得到 3-氯-4-羟基-6-甲氧基-2-甲基喹啉(4),用 POCl3 将其转化为 3,4-二氯-6-甲氧基-2-甲基喹啉(5)。用邻苯二胺处理化合物 5 后,得到新产品 2-甲氧基-6-甲基-7,7a,11a,12-四氢喹啉并[3,4-b]喹喔啉(6),其结构是根据光谱数据确定的。