S 98 Synthesis of 5-trifluoromethylpyrazol-1-yl-substituted 1,2,4,5-tetrazines [Electronic resource] / S. G. Tolshchina, N. K. Ignatenko, P. A. Slepukhin, R. I. Ishmetova, G. L. Rusinov // Chemistry of Heterocyclic Compounds. - 2010. - Vol. 46, № 6. - P691-698 : рис., табл. Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): 5-HYDROXY-5-TRIFLUOROMETHYLPYRAZOLINES -- 1,2,4,5-TETRAZINES -- 1,1,1-TRIFLUORO-2,4-PENTANEDIONE Аннотация: Previously unknown products of the cyclocondensation of 1,1,1-trifluoro-2,4-pentanedione with triaminoguanidine and hydrazine derivatives of 1,2,4,5-tetrazine have been obtained. 5-Hydroxy-5-trifluoromethylpyrazoline substituents formed on the tetrazine ring were dehydrated under the action of trifluoroacetic anhydride. A comparison has been carried out of the reactivity of 5-trifluoromethylpyrazolyl-substituted 1,2,4,5-tetrazines and their unfluorinated analogs in nucleophilic substitution and [4 + 2] cycloaddition reactions \\\\Expert2\\nbo\\Chemistry of Heterocyclic Compounds\\2010, v.46, N 6, p.691-698.pdf |