Dihydroquinazolin-4(1H)-one derivatives as novel and potential leads for diabetic management
作者:Oluwatoyin Babatunde、Shehryar Hameed、Uzma Salar、Sridevi Chigurupati、Abdul Wadood、Ashfaq Ur Rehman、Vijayan Venugopal、Khalid Mohammed Khan、Muhammad Taha、Shahnaz Perveen
DOI:10.1007/s11030-021-10196-5
日期:2022.4
A variety of dihydroquinazolin-4(1H)-onederivatives (1–37) were synthesized via “one-pot” three-component reaction scheme by treating aniline and different aromatic aldehydes with isatoic anhydride in the presence of acetic acid. Chemical structures of compounds were deduced by different spectroscopic techniques including EI-MS, HREI-MS, 1H-, and 13C-NMR. Compounds were subjected to α-amylase and
CuO nanoparticles catalyzed simple and efficient synthesis of 2,3-dihydroquinazolin-4(1H)-ones and quinazolin-4(3H)-ones under ultrasound irradiation in aqueous ethanol under ultrasound irradiation in aqueous ethanol
A CuO nanoparticle-catalyzed one-pot process has engineered for the preparation of diverse quinazolinones from the readily available isatoic anhydride, aldehydes and amine or ammonium. For amine substrates the reactions afford 2,3-dihydroquinazolin-4(1H)-ones in aqueous ethanol promoted by ultrasound irradiation. However, the ammonium substrates undergo intramolecular electron transfer and rearrangement
Cu(II) complex-decorated hybrid nanomaterial: a retrievable catalyst for green synthesis of 2,3-dihydroquinazolin-4(1<i>H</i>)-ones
作者:Mohammad Ali Bodaghifard、Somayeh Safari
DOI:10.1080/00958972.2021.1905803
日期:2021.5.19
Abstract The significant stability of magnetic core and − OH functional groups on the surface of silica-coated cobalt ferrite (CoFe2O4@SiO2) nanoparticles make it a good candidate for functionalization and catalytic application. In this work, a surface-modified magnetic solid support with Cu(II) complex was prepared. The structure of the new nanostructure was characterized by Fourier-transform infrared
摘要 二氧化硅包覆的铁氧体钴(CoFe 2 O 4 @SiO 2)表面的磁芯和-OH官能团的显着稳定性) 纳米粒子使其成为功能化和催化应用的良好候选者。在这项工作中,制备了具有 Cu(II) 配合物的表面改性磁性固体载体。通过傅里叶变换红外光谱(FT-IR)、X射线粉末衍射(XRD)、热重分析(TGA/DTG)、振动样品磁强计(VSM)、场发射扫描电子显微镜对新型纳米结构进行了表征(FE-SEM)、电子色散 X 射线光谱 (EDS) 和电感耦合等离子体发射光谱 (ICP/OES) 技术。制备的杂化纳米材料在合成 2,3-二氢喹唑啉-4(1 H)-ones 和所需产物的高产率是用绿色培养基获得的。该方法的一些优点是收率高、反应时间短、绿色溶剂和条件、后处理程序简单、铜浸出可忽略不计、可重复使用且催化效率没有显着降低以及通过使用外部磁铁简单分离纳米催化剂以及环境兼容性和可持续性.
Hydroxyapatite nanoparticles (HAP NPs): a green and efficient heterogeneous catalyst for three-component one-pot synthesis of 2,3-dihydroquinazolin-4(1H)-one derivatives in aqueous media
作者:Nasrin Razavi、Batool Akhlaghinia
DOI:10.1039/c5nj02123e
日期:——
Hydroxyapatite nanoparticles (HAP NPs) are found to be an efficient catalyst for synthesis of 2,3-dihydroquinazolin-4(1H)-onederivatives in aqueousmedia via a three-componentone-pot condensation of isatoic anhydride and aromatic aldehydes with primary amines or ammonium salts. The nanocatalyst (characterized by FT-IR, XRD, SEM-EDS and TEM techniques) is easily recyclable six times without the significant
interactions towards chlorocuprates(I), affect the coordination environment of copper species and the particle size in the generated structures. All resulted microscopic data of [choline]+[CuCl2]−, [N-benzyl DABCO]+[Cu4Cl5]−, [N-benzyl nicotine]+[Cu4Cl5]− and [choline]+[Cu3Cl4]− showed the formation of nano-meter particles in the matrix of these materials. The new chlorocuprate(I) derived from choline chloride
有趣的有机-无机铜基纳米结构对应于[阳离子] + [C u n C l n +1 ] -通过含有配位中心的氯化物离子液体与CuCl反应成功制备。阴离子部分的“n”值 [Cu n Cl n+1 ] -被观察到依赖于所用离子液体中的阳离子的性质,在该离子液体中发生共沉淀。离子液体含有N位或OH官能团等官能团,可与氯铜酸盐(I)形成配位和静电相互作用,影响铜物种的配位环境和生成结构中的粒径。[胆碱] + [C u C l 2 ] - , [N-苄基 DABCO] + [C u 4 C l 5 ] - , [N-苄基尼古丁] + [ C u 4 C l 5的所有结果显微数据] -和[胆碱] + [C u 3 C l 4 ] -表明在这些材料的基质中形成了纳米颗粒。由氯化胆碱 [choline] + [C u 3 C l 4 ] -衍生的新氯铜酸盐 (I)通过元素分析、FESEM、TEM、ICP 和质谱