T 19 Tandem Knoevenagel Condensation and Intramolecular Cycloaddition Reactions of 2-Azidobenzaldehydes with 2-Cyanoacetamides in the Synthesis of 4-Thiocarbamoyltetrazolo-[1,5-a]Quinolines = Тандем реакций конденсации по Кнёвенагелю и внутримолекулярного циклоприсоединения 2-азидобензальдегидов с 2-цианотиоацетамидами в синтезе 4-тиокарбамоилтетразоло[1,5-a]хинолинов / V. O. Filimonov, V. T. Abaev, T. Beryozkina, K. A. Galata, P. A. Slepukhin, M. A. Kostenko, V. S. Berseneva // Chemistry of Heterocyclic Compounds. - 2016. - Vol. 52, № 9. - С. 721-726. - Bibliogr. : p. 726 (32 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): 2-AZIDOBENZALDEHYDES -- TETRAZOLO[1,5-A]QUINOLINE -- CYANOACETIC ACID THIOAMIDES Аннотация: The reaction of 2-azidobenzaldehydes with 2-thioamides of cyanoacetic acid proceeds without a solvent and base at 80–90°C selectively by one of the possible routes to form tetrazolo[1,5-a]quinolines. The proposed mechanism of the reaction involves the Knoevenagel condensation and subsequent intramolecular [3+2] cycloaddition of the azide group at the C≡N bond of an intermediate acrylonitrile. \\\\expert2\\NBO\\Chemistry of Heterocyclic Compounds\\2016, v.52, N 9, p. 721-726.pdf |