Вид документа : Статья из журнала Шифр издания : 54/A 10 Автор(ы) : Shchegol'kov E. V., Ivanova A. E., Burgart Ya. V., Saloutin V. I. Заглавие : A convenient approach to 4,7-dihydrotetrazolo [5,1-c ][1,2,4]triazine synthesis Место публикации : Journal of Heterocyclic Chemistry. - 2013. - Vol.50. - С. E80-E86 ББК : 54 Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ Ключевые слова (''Своб.индексиров.''): triazine synthesis--1,3-dicarbonyl --isomerism Аннотация: Azo coupling of 1,3-dicarbonyl compounds with tetrazolyl-5-diazonium chloride is used to develop a convenient one-step procedure for the synthesis of 4,7-dihydrotetrazolo[5,1-c][1,2,4]triazines. In contrast to nonfluorinated analogs, 7-hydroxy-7-polyfluoroalkyl-4,7-dihydrotetrazolo[5,1-c][1,2,4]triazines undergo a ring-chain isomerism resulting from the cleavage at the C7 - N7a bond. A distinctive feature of nonfluorinated 4,7-dihydrotetrazolo[5,1-c][1,2,4] triazines is the possibility to dehydration, which is accompanied by an azide rearrangement due to the tetrazole ring cleavage with the formation of tetrazolo[1,5-b][1,2,4]triazines Доп.точки доступа: Shchegol'kov, E. V.; Ivanova, A. E.; Burgart, Ya. V.; Бургарт Янина Валерьевна; Saloutin, V. I.