Zirconia Sulfuric Acid: An Efficient Heterogeneous Catalyst for the One-Pot Synthesis of 3,4-Dihydropyrimidinones Under Solvent-Free Conditions
作者:Maliheh M. Hosseini、Eskandar Kolvari、Nadiya Koukabi、Maryam Ziyaei、Mohammad Ali Zolfigol
DOI:10.1007/s10562-016-1723-8
日期:2016.6
this article, zirconia sulfuric acid (ZrSA) has been synthesized from the reaction of ZrO2 with chlorosulfonic acid. It was characterized by (FT-IR, XRD, TGA, SEM, EDS, BET, BJH, ICP and pH analysis). This catalyst was employed for the synthesis of 3,4-dihydropyrimidinones via cyclocondensation of β-ketoester, aromatic aldehydes and urea/thiourea under solvent-free conditions. Main advantages of the
在本文中,氧化锆硫酸 (ZrSA) 由 ZrO2 与氯磺酸反应合成。通过(FT-IR、XRD、TGA、SEM、EDS、BET、BJH、ICP和pH分析)对其进行表征。该催化剂用于在无溶剂条件下通过 β-酮酯、芳香醛和尿素/硫脲的环缩合反应合成 3,4-二氢嘧啶酮。该催化剂的主要优点是无毒、稳定性高、可重复使用。图形摘要。