U 62 Unusual Expansion of the 1,2,4,5-Tetrazine Ring in [1,2,4]Triazolo[4,3-b]-[1,2,4,5]tetrazines Leading to [1,2,4,6]Tetrazepine Systems [Text] / I. N. Ganebnuikh, S. G. Tolshchina, R. I. Ishmetova, N. K. Ignatenko, P. A. Slepukhin, G. L. Rusinov, V. N. Charushin // European Journal of Organic Chemistry. - 2011. - № 12. - P2309-2318. - Bibliogr. : p. 2318 (22 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: Expansion of the tetrazine ring has first been found to occur when [1,2,4]triazolo[4,3-b][1,2,4,5]tetrazines were allowed to react with CH-active compounds in acetonitrile in the presence of triethylamine to give the unexpected series of 8,9-dihydro-7H-[1,2,4]-triazolo[4,3-b][1,2,4,6] tetrazepine derivatives \\\\Expert2\\nbo\\European Journal of Organic Chemistry\\2011, p.2309.pdf |