CuO nanoparticles: synthesis and application as an efficient reusable catalyst for the preparation of xanthene substituted 1,2,3-triazoles via click chemistry
摘要:
Copper(II) oxide (CuO) nanoparticles have been found to be an efficient catalyst for 1,3-dipolar cycloaddition (CuAAC) of aromatic azides and acetylenic xanthenes furnishing the corresponding xanthene substituted triazoles in excellent yields. CuO nanoparticles have been synthesized from copper acetate by simple co-precipitation method and characterized by scanning electron microscope, energy dispersive X-ray analysis, transmission electron microscope, and X-ray diffraction analysis. The salient features of the present protocol are mild reaction conditions, shorter reaction time, reusability of the catalyst, and applicability to a wide range of substrates. (C) 2015 Elsevier Ltd. All rights reserved.
一系列 11 种色烯-二氢嘧啶酮和 11 种呫吨-二氢嘧啶酮杂化化合物通过连续的多组分反应,然后是铜催化的炔烃-叠氮化物环加成反应,很容易合成。杂种的抗生物膜和抗菌活性针对金黄色葡萄球菌和铜绿假单胞菌进行了评估,抗生物膜特性呈剂量依赖性。大多数化合物显示出对金黄色葡萄球菌的抗生物膜活性,而不抑制其生长。在体内,蠕虫急性或长期暴露于15a杂种表现出存活率、育雏大小和体长下降以及凋亡尸体数量增加;然而,这些影响仅在测试的最高浓度下观察到。计算机分析表明,该分子在 SOS 通路中有一个新的靶标,用于诱导 DNA 损伤修复。因此,这些杂化物是很有前途的化合物,可以对抗与难以治疗的慢性感染相关的细菌生物膜。
Copper-hydroxyacetophenone thiosemicarbazone complex on silica-coated magnetite nanoparticles as an efficient catalyst for three-component synthesis of 1,4-disubstituted 1,2,3-triazoles
作者:Narjes Kaviani、Somayeh Behrouz、Abbas Ali Jafari、Mohammad Navid Soltani Rad
DOI:10.1016/j.jorganchem.2024.123043
日期:2024.3
Synthesis, characterization, and application of copper-hydroxyacetophenone thiosemicarbazone complex immobilized on silica-coated magnetite nanoparticles (FeO@SiO-HAT-Cu(I)) as a novel magnetically retrievable nanocatalyst for the three-component synthesis of 1,4-disubstituted 1,2,3-triazoles are described. [Display omitted]