S 98 Synthesis of 8-Aryl[1,2,4]triazolo[1,5-d][1,2,4]triazin-5(6H)-ones by S HN Reactions [Electronic resource] / V. L. Rusinov, G. V. Zyryanov, I. N. Egorov, E. N. Ulomskii, G. G. Aleksandrov, O. N. Chupakhin // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2004. - Vol. 40, № 1. - P85-89 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: A new procedure has been proposed for the synthesis of 8-aryl[1,2,4]triazolo[1,5-d][1,2,4]-triazin-5(6H)-ones by reaction of 6-aryl-1,2,4-triazin-3(2H)-ones with hydrazides derived from aliphatic, aromatic, and heterocyclic carboxylic acids. The process invloves nucleophilic substitution of hydrogen (SN H)in aryltriazinones, oxidative closure of azole ring, and Dimroth rearrangement \\\\Expert2\\nbo\\Russian Journal of Organic Chemistry\\2004, 40 (1), 85.pdf |