Synthesis of Triazolo[1,5-a]triazin-7-one Derivatives and Highly Functionalized[1,2,4]Triazoles
作者:Montserrat Heras、David Font、Anthony Linden、José M. Villalgordo
DOI:10.1002/hlca.200390261
日期:2003.9
The synthesis of novel triazolo[1,5-a]triazin-7-ones is presented. Starting from 3-amino-5-sulfanyl-1,2,4-triazole, the synthetic sequence involved alkylation with benzyl bromide, reaction with p-nitrophenyl chloroformate followed by treatment with a primary amine, and condensation with diethoxymethyl acetate. Final oxidation of the thioether moiety with 3-chloroperbenzoic acid provided 2-(benzylsulfonyl)[1
介绍了新型三唑并[1,5- a ]三嗪-7-ones的合成。从3-氨基-5-硫烷基-1,2,4-三唑开始,合成序列包括用苄基溴进行烷基化,与氯甲酸对硝基苯酯反应,然后用伯胺处理,并与二乙氧基甲基乙酸酯缩合。用3-氯过苯甲酸最终氧化硫醚部分,得到总体良好的2-(苄基磺酰基)[1,2,4]三唑[1,5- a ] [1,3,5]三嗪-7- a 5a和5b产量。5a和5b的治疗与仲胺的混合物通过意外的三嗪酮开环提供了高度官能化的[1,2,4]三唑。提出了这种转变的机制。