Condensation of 5-hydroxy-2-methyl-4H-pyran-4-one with arylglyoxals. Synthesis and properties of 2-aryl-1-(3-hydroxy-6-methyl-4-oxo-4H-pyran-2-yl)ethane-1,2-diones
Photochemical method for preparation of benzo[a]pyrano[3,2‐c]phenazin‐4‐ones from quinoxalines with 4‐pyranone unit
作者:Dmitry V. Tsyganov、Andrey N. Komogortsev、Valeriya G. Melekhina、Artem N. Fakhrutdinov、Boris V. Lichitsky
DOI:10.1002/jhet.4861
日期:2024.9
Photochemical properties of terarylenes with quinoxalines bridge unit and allomaltol fragment was investigated. We have demonstrated that starting compounds with hydroxyl group in 3-hydroxy-4-pyranone substituent does not undergo any photoinduced transformations. Wherein, conversion to methoxy derivatives allows one to realize photochemical 6π-electrocyclization for considered quinoxalines. Based on
研究了具有喹喔啉桥单元和异麦芽酚片段的三萘嵌苯的光化学性质。我们已经证明,3-羟基-4-吡喃酮取代基中带有羟基的起始化合物不会发生任何光诱导转化。其中,转化为甲氧基衍生物可以实现所考虑的喹喔啉的光化学6π-电环化。根据 X 射线分析数据,观察到的反应性差异与羟基衍生物中氢键的存在有关。通过研究,采用光化学方法制备新型苯并[ a ]吡喃并[3,2- c ]吩嗪-4-酮。