Studies on Antiallergy Agent. I. Synthesis of 1, 4-Dihydro-4-oxo-3-quinolinecarboxylic Acids

Crystal structure of ethyl 8-chloro-4-oxo-1,4-dihydroquinoline-3-carboxylate

“…For the biological background of this study, see: Mugnaini et al (2009); Ishikawa & Fujii (2011); Bisacchi (2015). For the synthesis of the title compound, see: Ozeki et al (1987). For related structures, see: Garudachari et al (2012Garudachari et al ( , 2013; Ishikawa & Yoshida (2014).…”

“…The title compound was synthesized according to the literature (Ozeki et al 1987). Single crystals suitable for X-ray diffraction were obtained by slow evaporation of an N,N-dimethylforamide solution of the compound at room temperature.…”

Ethyl 8-methoxy-4-oxo-1,4-dihydroquinoline-3-carboxylate

“…For the background of this study, see: Ishikawa & Fujii (2011). For the synthesis of the title compound, see: Ozeki et al (1987). Table 1 Hydrogen-bond geometry (Å , ).…”

“…The title compound was synthesized according to the literature (Ozeki et al 1987). Single crystals suitable for X-ray diffraction were obtained by slow evaporation of an acetonitrile solution of the compound at room temperature.…”