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Efficient one-pot synthesis of 3,4-dihydropyrimidin-2(1H)-ones catalyzed by a new heterogeneous catalyst based on Co-functionalized Na+-montmorillonite

机译:基于共官能化Na + -蒙脱土的新型多相催化剂催化一锅合成3,4-二氢嘧啶-2(1 H )-

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In the present study, we report a simple, facile and efficient solvent-free protocol for the synthesis of 3,4-dihydropyrimidin-2(1H)-ones by the three component condensation of aldehyde, ethyl acetoacetate and urea through using Co@imine-Na+-MMT as a new, environmentally friendly and reusable heterogeneous catalyst. The structure of the synthesized catalyst was characterized by various techniques, including IR, SEM, TGA, EDX, AAs, DR-UV-vis and XRD analyses. Green reaction conditions, high quantitative yields and the easy isolation of products, easy separation and recovery of the catalyst and short reaction times are some of the advantages of our procedure.
机译:在本研究中,我们报告了一种通过醛,乙基三组分缩合反应合成3,4-二氢嘧啶-2(1 H )-one的简单,便捷,有效的无溶剂方案通过使用Co @ imine-Na + -small MTT作为新型,环保和可重复使用的非均相催化剂,可制得乙酰乙酸酯和尿素。合成的催化剂的结构通过各种技术进行了表征,包括IR,SEM,TGA,EDX,AA,DR-UV-vis和XRD分析。绿色的反应条件,高的定量收率和易于分离的产物,易于分离和回收催化剂以及较短的反应时间是我们程序的一些优势。

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