Вид документа : Статья из журнала Шифр издания : Автор(ы) : Tonkoglazova D. I., Gulevskaya A. V., Askalepova O. I., Chistyakov K. A. Заглавие : Synthesis, crystal structures and properties of carbazolebased [6]helicenes fused with an azine ring Место публикации : Beilstein journal of organic chemistry. - 2021. - Vol. 17. - С. 11-21 Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ Ключевые слова (''Своб.индексиров.''): azine-fused helicenes--carbazole-based [6]helicenes--helical structures Аннотация: Novel carbazole-based [6]helicenes fused with an azine ring (pyridine, pyrazine or quinoxaline) have been prepared through a five-step synthetic sequence in good overall yields. Commercially available 2,3-dihaloazines were used as starting materials. To discern the effect of merging an azine moiety within a helical skeleton, the X-ray structures, UV–vis absorption and fluorescence spectra of the helicenes were investigated and compared to that of the parent carbazole-based [6]helicene (7H-phenanthro[3,4-c]carbazole). Доп.точки доступа: Tonkoglazova, D. I.; Gulevskaya, A. V.; Askalepova, O. I.; Chistyakov, K. A.