Substituted quinolinones, Part 23. Synthesis of 6-ethyl-4,5-dioxo-5,6-dihydro-4H-pyrano[3,2-c]quinoline-3-carboxaldehyde and its chemical behavior towards hydroxylamine hydrochloride
作者:Magdy A. Ibrahim、Hany M. Hassanin、Mohamed Abbas、Shimaa Badran
DOI:10.3998/ark.5550190.p008.265
日期:——
The synthesis of novel 6-ethyl-4,5-dioxo-5,6-dihydro-4H-pyrano[3,2-c]quinoline-3-carboxaldehyde is described via Vilsmeier-Haack reaction of 3-acetyl-1-ethyl-4-hydroxyquinolin2(1H)-one. The reaction of titled aldehyde with hydroxylamine hydrochloride, under different conditions, revealed its distinctive chemical behavior and a variety of products were obtained. This study revealed existence of ring-opening
通过 3-乙酰基-1-乙基的 Vilsmeier-Haack 反应描述了新型 6-乙基-4,5-二氧-5,6-二氢-4H-吡喃并[3,2-c]喹啉-3-甲醛的合成-4-羟基喹啉2(1H)-一。标题醛与盐酸羟胺在不同条件下的反应显示出其独特的化学行为并获得了多种产物。该研究揭示了在乙酸和/或乙醇氢氧化钾中用盐酸羟胺处理时存在开环闭环 (RORC)。新产品的结构是根据它们的分析和光谱数据推导出来的。