Synthesis of 5-(6-Methyl-2,4-dioxo-1,2,3,4-tetrahydro-3-pyrimidinyl)-methyl-4-amino-1,2,4-triazole-3-thione and its Reactions with Polyfunctional Electrophiles
作者:Povilas Vainilavicius、Romualdas Smicius、Virginija Jakubkiene、Sigitas Tumkevicius
DOI:10.1007/s007060170070
日期:2001.7
In the reaction of 5-(6-methyl-2,4-dioxo-1,2,3,4-tetrahydro-3-pyrimidinyl)-methyl-1,3,4-oxadiazole-2-thione with hydrazine hydrate, 5-(6-methyl-2,4-dioxo-1,2,3,4-tetrahydro-3-pyrimidinyl)-methyl-4-amino-1,2,4-triazole-3-thione was formed. The reactions of the latter with ethyl bromoacetate and chloroacetonitrile in the presence of triethylamine proceeded under formation of the corresponding S-alkylated
在5-(6-甲基-2,4-二氧-1,2,3,4-四氢-3-嘧啶基)-甲基-1,3,4-恶二唑-2-硫酮与水合肼的反应中,5形成-(6-甲基-2,4-二氧代-1,2,3,4-四氢-3-嘧啶基)-甲基-4-氨基-1,2,4-三唑-3-硫酮。在三乙胺的存在下,后者与溴乙酸乙酯和氯乙腈的反应在相应的S-烷基化衍生物的形成下进行,而从其与ω-溴苯乙酮和4-氯乙酰乙酸乙酯的反应中获得了三偶氮噻二嗪。用2-氯乙酰乙酸乙酯处理标题化合物导致形成5-(6-甲基-2,4-二氧-1,2,3,4-四氢-3-嘧啶基)-甲基-4-N-乙酰氨基-(3-乙氧基-羰基甲硫基)-1,2,4-三唑。在没有碱性催化剂的情况下进行后一反应,得到三唑并噻二嗪。 通过 环缩合反应。