Transformations of S-substituted 5,7-dimethyl-4а,5а-diphenyl-3-thioxoperhydroimidazo[4,5-e]-1,2,4-triazin-2-ones under treatment of 1,2-benzoquinones and photochemical properties of reaction products
作者:Angelina N. Kravchenko、Sergei V. Vasilevskii、Galina A. Gazieva、Vladimir V. Baranov、Valery A. Barachevsky、Olga I. Kobeleva、Olga V. Venidiktova、Valentina A. Karnoukhova
DOI:10.1016/j.tet.2018.03.056
日期:2018.5
were prepared by the reactions of 3-alkylthio-5,7-dimethyl-4a,7a-diphenyl-4a,5,7,7a-tetrahydro-1H-imidazo[4,5-e]-1,2,4-triazin-6(4H)-ones with 3,5-di-tert-butyl-1,2-benzoquinone 1 and 4,6-di-tert-butyl-3-nitro-1,2-benzoquinone 2, respectively. Photochemical transformations of compounds 9 and 10a as well as products of its photooxygenation involving singlet oxygen under UV irradiation: urea 16, isomeric
5,7-二叔丁基-1,3-二甲基-3a,9a-二苯基-3,3a-二氢-1 H-苯并[5,6] [1,4]二恶英[2, 3- d ]咪唑-2(9A ħ) -酮13和复杂9的4,6-二-叔丁基-3-硝基苯-1,2-二醇与1,3-二甲基-4,5-二苯基通过3-烷硫基5,7-二甲基-4a,7a-二苯基-4a,5,7,7a-四氢-1 H-咪唑的反应制备1 H-咪唑-2(3 H)-1 10a。 4,5-e] -1,2,4-三嗪-6(4 H)-ones与3,5-二叔丁基-1,2-苯醌1和4,6-二叔丁基-丁基-3-硝基-1,2-苯醌2。化合物的光化学转化9和10a中涉及UV辐射下单线态氧以及其光氧化的产品:尿素16,异构体的1,3-二甲基-4,5- diphenylimidazolidin -2-酮17和17' ,和化合物18进行了研究通过光谱动力学方法。获得了有关合成化合物及其光产物的吸收和荧光性质的数据。