The synthesis of some 2,4-disubstituted derivatives of quinolone-3-carboxylic acids and carbonitriles
作者:D. L. Leysen、A. Haemers、W. Bollaert、R. A. Dommisse、E. L. Esmans
DOI:10.1002/jhet.5570240622
日期:1987.11
the 2-chloro derivative of oxolinic acid, ethyl 1-ethyl-1,4-dihydro-2-hydroxy-6,7-methylenedioxy-4-oxo-3-quinolinecarboxylate was treated with phosphorus oxychloride. The compound obtained was the 4-chloro-2-oxo-quinoline. The structure was confirmed by 13C nmr and mass spectral techniques. The 2-halocarbonitrile was obtained by a Sandmeyer reaction but could not be hydrolysed into the acid.
为了制备草酸的2-氯衍生物,用氯氧化磷处理1-乙基-1,4-二氢-2-羟基-6,7-亚甲基二氧基-4-氧代-3-喹啉羧酸乙酯。得到的化合物是4-氯-2-氧代-喹啉。通过13 C nmr和质谱技术证实了该结构。通过桑德迈尔反应获得了2-卤代腈,但是不能被水解成酸。