Abstract 1-Butyl-3-methylimidazolium hydrogen sulfate ([BMIM][HSO4]) as a non-halogenated ionic liquid (IL) was used for the synthesis of 3,4-dihydropyrimidin-2(1H)-ones and thiones or 2-selenoxo DHPMs in a Biginelli type multi-component reaction. By using this ionic liquid, the reaction time was significantly reduced and the products were obtained in good to high yields. Also, in this method, the synthesis of novel 2-selenoxo DHPMs is introduced in the presence of this ionic liquid and their structures were determined by 1H and 13C NMR, FT-IR, and Elemental analysis. Graphical Abstract

中文翻译：

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使用 1-丁基-3-甲基咪唑鎓硫酸氢盐作为非卤化离子液体一锅法合成 3,4-二氢嘧啶-2(1H)-酮、硫酮和 2-硒代 DHPM

摘要 1-丁基-3-甲基咪唑硫酸氢盐 ([BMIM][HSO4]) 作为非卤化离子液体 (IL) 用于合成 3,4-二氢嘧啶-2(1H)-酮和硫酮或 2 - 在 Biginelli 型多组分反应中的 selenoxo DHPM。通过使用该离子液体，反应时间显着缩短，并且以良好至高产率获得产物。此外，在该方法中，在这种离子液体的存在下引入了新型 2-硒代 DHPM 的合成，并通过 1H 和 13C NMR、FT-IR 和元素分析确定了它们的结构。图形概要