under anhydrous basic conditions. A three-component one-pot synthesis improved the yield of benzoxazinophenothia-12-amine to 81% a in shorter time compared to two steps reactions. The synthesis of new azomethine derivatives of benzo[a]benzo[5,6] [1,4] oxazino [3,2-c] phenothiazin-12-amine with extended conjugations and excellent yields were also reported. The structural assignments of the prepared compounds
图形摘要 摘要 描述了新的多环混合
吩噻嗪-
吩恶嗪化合物的方便合成。2,4-diaminothiophenol 与 2,3-dichloro-1,4-naphthoquin one 在室温下交叉偶联得到红棕色的 10-amino-6-chlorobenzo[a]phenoxazin-5-one,它被转化为 benzoxazinophenothiazin通过在无
水碱性条件下与 2-
氨基
苯硫酚反应,-12-胺的产率为 58%。与两步反应相比,三组分一锅法在更短的时间内将苯并恶嗪基吩
噻吩-12-胺的产率提高到 81%。还报道了苯并[a] 苯并[5,6] [1,4] oxazino [3,2-c] phenothiazin-12-amine 的新型偶氮甲碱衍
生物的合成,其具有扩展的共轭性和优异的产率。所制备化合物的结构归属是通过结合紫外-可见光、傅立叶变换红外、1H 和 13C 核磁共振光谱、质谱和