Directed lithiation of pyrene-1-carboxamides, followed by reaction with DMF, afforded 7-hydroxy-8,9-dihydro-7H-phenaleno-[1,9-ef]isoindoles, which were oxidized with Jones reagent to the corresponding pyrene-1,2-dicarboximides. Similarly, the reaction of lithiated N-tert-butylpyrene-1-carboxamide with tert-butyl isocyanate afforded N,N’-di-tert-butylpyrene-1,2-dicarboxamide. The electronic structure
-1- 1-羧酰胺的直接
锂化,然后与
DMF反应,得到7-羟基-8,9-二氢-7 H - phenaleno- [1,9 - ef ]异
吲哚,用Jones试剂氧化为相应的pyr -1,2-二甲
酰亚胺。类似地,
锂化反应Ñ -叔-butylpyrene -1-甲酰胺与
叔丁基异氰酸酯,得到N,N” -二叔-丁基py-1,2-二甲酰胺。通过理论计算(TD DFT)和实验方法(稳态和时间分辨荧光)研究了这些化合物的电子结构和光物理性质,并与pyr-1单羰基化合物的电子结构和光物理性质进行了比较。获得的结果表明2-位羰基对这类of基荧光团的结构和发光性能有很大影响。