S 98 Synthesis of methyl 7-aryl-6-(2-thenoyl)-4,7-dihydro-tetrazolo[1,5-a]pyrimidine-5-carboxylates and their reaction with hydrazine hydrate [Electronic resource] / V. L. Gein, V. V. Mishunin, E. P. Tsyplyakova, M. I. Vakhrin, P. A. Slepukhin // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2011. - Vol. 47, № 7. - P1077-1082. - Bibliogr. : p. 1082 (5 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: Fusion of methyl 4-(2-thienyl)-2,4-dioxobutanoate with 1H-tetrazol-5-amine monohydrate and aromatic aldehyde gave methyl 7-aryl-6-(2-thenoyl)-4,7-dihydrotetrazolo[1,5-a]pyrimidine-5-carboxylates which reacted with an equimolar amount of hydrazine hydrate at 180-190A degrees C under solvent-free conditions to produce 9-aryl-8-(2-thienyl)-4,9-dihydrotetrazolo[1',5': 1,2]pyrimido[4,5-d]pyridazin-5(6H)-ones \\\\Expert2\\nbo\\Russian Journal of Organic Chemistry\\2011, 47 (7), 1077.pdf |