Вид документа : Статья из журнала Шифр издания : 54/R 35 Автор(ы) : Irgashev R. A., Kazin N. A., Kim G. A., Rusinov G. L., Charushin V. N. Заглавие : Regioselective C2- and C8-Acylation of 5,11-Dihydroindolo[3,2-b]carbazoles and the Synthesis of Their 2,8-Bis(quinoxalinyl) Derivatives Место публикации : Synthesis (Germany). - 2015. - Vol. 47, № 22. - С. 3561-3572 ББК : 54 Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ Ключевые слова (''Своб.индексиров.''): 5,11-dihydroindolo[3,2-b]carbazoles--acylation-- 2-arylglyoxals Аннотация: An efficient approach for the double acetylation of 5,11-dihexyl-6,12-di(hetero)aryl-substituted 5,11-dihydroindolo[3,2-b]carbazoles with acetic anhydride in the presence of boron trifluoride etherate has been developed, thus affording the corresponding 2,8-diacetyl derivatives in good yields. A similar acylation has been shown to occur by the reaction of anhydrides of other carboxylic acids. Oxidation of the obtained 2,8-diacetyl derivatives with selenium dioxide takes place on heating or under microwave irradiation, thus resulting in the formation of the corresponding 2,8-diglyoxals. The latter proved to react with aromatic o-diamines to afford new indolo[3,2-b]carbazoles bearing quinoxalinyl fragments at C-2 and C-8. Major optical properties of quinoxaline-containing indolo[3,2-b]carbazoles have been measured. Доп.точки доступа: Irgashev, R. A.; Kazin, N. A.; Kim, G. A.; Rusinov, G. L.; Charushin, V. N.