Abstract Fused tricyclic heterocycles are useful compounds in many areas of chemistry. In this study, 2,3-diaminoquinolin-4(1H)one (5), a key intermediate for the preparation of tricyclic compounds, was prepared from isatoic anhydride in four steps with high yields under mild conditions and an easy workup, with most of the reactions carried out in aqueous medium. Compound 5 was transformed into a series
                                    摘要 稠合
三环杂环是许多
化学领域中的有用化合物。在本研究中,2,3-二
氨基
喹啉-4(1H)one (5) 是制备
三环化合物的关键中间体,采用四步法在温和的条件下以高收率和易于后处理的方式从
靛红酸酐中制备,大多数在
水性介质中进行的反应。化合物 5 被转化为一系列
三环稠合产物 8 和 9。