Naim, S. Shawkat; Khan, Naseem H.; Siddiqui, Amin A., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1980, vol. 19, # 7, p. 622 - 624
Synthesis of novel magnetic nanoparticles with urea or urethane moieties: Applications as catalysts in the Strecker synthesis of α-aminonitriles
作者:Saeed Baghery、Mohammad Ali Zolfigol、Romana Schirhagl、Masoumeh Hasani、Marc C.A. Stuart、Andreas Nagl
DOI:10.1002/aoc.3883
日期:2017.12
Four novel magneticnanoparticlecatalysts with urea or urethane moieties are reported. The silica‐coated magneticnanoparticles were simply functionalized via addition of 3‐(triethoxysilyl)propylisocyanate (TESPIC), amine or amino alcohol. TESPIC with dual labile functional groups was used as a suitable precursor for the synthesis of urethane‐based catalysts. The newly synthesized catalysts were fully
Nano magnetic sulfated zirconia (Fe<sub>3</sub>O<sub>4</sub>@ZrO<sub>2</sub>/SO<sub>4</sub><sup>2−</sup>): an efficient solid acid catalyst for the green synthesis of α-aminonitriles and imines
In this research, nano magnetic sulfated zirconia was prepared through a green and facile method and acted as a novel, heterogeneous, efficient nano-catalyst for the one-pot three component synthesis of α-aminonitrile derivatives.
Targeted development of hydrophilic porous polysulfonamide gels with catalytic activity
作者:Sedigheh Alavinia、Ramin Ghorbani-Vaghei
DOI:10.1016/j.jpcs.2020.109573
日期:2020.11
this synthesis pathway, in situ polymerization onto the template surface led to the construction of a silica/polymer nanocomposite. Next, after removal of the template, the nanocomposite gels were transformed into mesoporous polysulfonamide nanospheres. After the physicochemical identification of the synthesized materials, functionalized polysulfonamides were used as reusable novelcatalysts with high
Synthesis and characterization of an acidic nanostructure based on magnetic polyvinyl alcohol as an efficient heterogeneous nanocatalyst for the synthesis of α-aminonitriles
the morphological, chemical and physical properties of the prepared nanocatalyst. All these results confirmed the successful synthesis of Fe3O4@PVA-SO3H. This heterogeneous nanocatalyst was then successfully used for the synthesis of α-aminonitrile derivatives by starting from an aldehyde, an aniline and trimethylsilyl cyanide (TMSCN). High efficiency, green chemistry properties, simple and easy separation
本研究描述了一种基于聚乙烯醇(PVA)的新型磁性纳米复合材料的设计,制备和表征,该复合材料是无毒,水溶性,高机械稳定性和低成本的聚合物。傅里叶变换红外(FT-IR)光谱,场发射扫描电子显微镜(FE-SEM)图像,透射电子显微镜(TEM)图像,X射线衍射(XRD)模式,能量色散X射线(EDX)分析用热重(TG)分析法描述了所制备纳米催化剂的形貌,化学和物理性质。所有这些结果证实了Fe 3 O 4 @ PVA-SO 3的成功合成。H.这种多相纳米催化剂随后通过从醛,苯胺和三甲基甲硅烷基氰化物(TMSCN)开始成功地用于合成α-氨基腈衍生物。高效,绿色化学性质,简单容易的分离是这种纳米复合材料的特殊性质。Fe 3 O 4 @ PVA-SO 3 H可以通过外部磁体产生,可以重复使用十次,而不会改变其结构。
Gallic acid grafted to amine‐functionalized magnetic nanoparticles as a proficient catalyst for environmentally friendly synthesis of α‐aminonitriles
作者:Ali Maleki、Sepide Azadegan、Jamal Rahimi
DOI:10.1002/aoc.4810
日期:2019.5
between aromatic aldehydes, aniline or toluidine and trimethylsilyl cyanide in the presence of amine‐functionalized Fe3O4@SiO2 nanoparticlesgrafted with gallicacid (GA) as a powerful catalyst was developed. The fabricated reusable catalyst demonstrated high efficiency in the synthesis of α‐aminonitriles along with facile work‐up procedure. Fe3O4@SiO2‐NH2‐GA was characterized by Fourier transform‐infrared
开发了一种在胺官能化的Fe 3 O 4 @SiO 2纳米颗粒接枝没食子酸(GA)作为强力催化剂的情况下,芳族醛,苯胺或甲苯胺与三甲基甲硅烷基氰之间进行单锅催化Strecker反应的有效方法。制备的可重复使用的催化剂在合成α-氨基腈的过程中表现出很高的效率,并且操作简便。Fe 3 O 4 @SiO 2 -NH 2 -GA的特征在于傅立叶变换红外光谱,扫描电子显微镜图像,振动样品磁力计曲线,能量色散X射线分析和热重分析。