Novel Four-Step Synthesis of Thioxo-quinazolino[3,4-<i>a</i>]quinazolinone Derivatives
作者:Behnaz Shafii、Mina Saeedi、Mohammad Mahdavi、Alireza Foroumadi、Abbas Shafiee
DOI:10.1080/00397911.2013.800211
日期:2014.1.17
Abstract A novel synthesis of thioxo-quinazolino[3,4-a]quinazolinone framework was developed through a four-step reaction starting from isatoic anhydride. The resulting 2-aminobenzamides from the reaction of isatoic anhydride and different amines underwent coupling–cyclization reaction with 2-nitrobenzaldehydes, reduction of nitro group, and then cyclization reaction with carbon disulfide (CS2). All
摘要 通过以靛红酸酐为原料的四步反应,开发了一种新的硫代-喹唑啉并[3,4-a]喹唑啉酮骨架的合成方法。由靛红酸酐和不同胺反应得到的 2-氨基苯甲酰胺与 2-硝基苯甲醛进行偶联-环化反应,硝基还原,然后与二硫化碳 (CS2) 进行环化反应。所有步骤均在简单且用户友好的条件下在短时间内进行,无需使用昂贵的催化剂或试剂。[本文提供补充材料。访问出版商的 Synthetic Communications® 在线版,获取以下免费补充资源:完整的实验和光谱细节。] 图形摘要