A novel catalyst‐free mechanochemical protocol for the synthesis of 2,3‐dihydro‐1<i>H</i>‐perimidines
作者:Nissy Ann Harry、Sankaran Radhika、Mohan Neetha、Gopinathan Anilkumar
DOI:10.1002/jhet.3880
日期:2020.4
A rapid, efficient, and green grinding assisted method for the synthesis of 2,3‐dihydro‐1H‐perimidines has been developed. 1,8‐Diaminonaphthalene and aldehydes were ground using mortar and pestle for 5 minutes affording the product in moderate to excellent yields. The methodology minimises the use of conventional workup and column chromatographic techniques.
[BTBA]Cl-FeCl<sub>3</sub> as an Efficient Lewis Acid Ionic Liquid for the Synthesis of Perimidine Derivatives
作者:Kiumars Bahrami、Sepideh Saleh
DOI:10.1080/15533174.2014.989602
日期:2016.6.2
An effective synthesis of various biologically important 2,3-dihydroperimidines from reaction of aldehydes and naphthalene-1,8-diamine has been developed using [BTBA]Cl-FeCl3 as an efficient Lewis acid ionicliquid. This method is a very simple and high yielding reaction for the preparation of the titled compounds. Different functional groups are tolerated under this reaction conditions including ether
Synthesis of new TCH/Ni‐based nanocomposite supported on SBA‐15 and its catalytic application for preparation of benzimidazole and perimidine derivatives
microscopy, atomic absorption spectroscopy and N2 adsorption–desorption (Brunauer–Emmett–Teller) techniques. The catalytic performance of Ni/TCH@SBA‐15 (NNTS‐15) was determined for the synthesis of 2‐aryl‐substituted benzimidazoles and 2,3‐dihydroperimidines. The excellent yields within shorter reaction times, simplicity of catalytic methods, non‐toxicity and clean reactions, mild reaction conditions and easy
Fe<sub>3</sub>O<sub>4</sub>/SO<sub>3</sub>H@zeolite-Y as a novel multi-functional and magnetic nanocatalyst for clean and soft synthesis of imidazole and perimidine derivatives
作者:Mehdi Kalhor、Zohre Zarnegar
DOI:10.1039/c9ra02910a
日期:——
chlorosulfonic acid with zeolite-NaY undersolvent-freeconditions, which was then supported by Fe3O4 nanoparticles to give SO3H@zeolite-Y (Fe3O4/SO3H@zeolite-Y) magnetic nanoparticles. Several techniques were used to evaluate the physical and chemical characterizations of the zeolitic nanostructures. Fe3O4-loaded sulfonated zeolite was applied as a novel multi-functional zeolite catalyst for the synthesis of
本研究采用氯磺酸与沸石-NaY在无溶剂条件下反应合成SO 3 H@zeolite-Y,然后负载Fe 3 O 4纳米颗粒得到SO 3 H@zeolite-Y(Fe 3 O 4 /SO 3 H@zeolite-Y) 磁性纳米粒子。几种技术用于评估沸石纳米结构的物理和化学特性。铁3 O 4负载磺化沸石作为一种新型多功能沸石催化剂用于合成咪唑和哌啶衍生物。从绿色化学的角度来看,这种高效的方法具有收率好、产品纯度高、纳米催化剂可重复使用、反应条件简单、环境友好和化学过程经济等优点。
Fe3O4@zeolite-SO3H as a magnetically bifunctional and retrievable nanocatalyst for green synthesis of perimidines
作者:Mehdi Kalhor、Zohre Zarnegar、Fatemeh Janghorban、S. Ahmad Mirshokraei
DOI:10.1007/s11164-019-03992-0
日期:2020.1
demonstrated high activity in the catalytic synthesis of perimidine derivatives under solvent-free conditions. Combining the advantages of solid acids based nanocomposites and magnetic separation, this method provides an efficient and much improved modification of the general synthesis of perimidines. Recycling experiments confirmed the good stability of the nanocatalyst for six times and its constant activity
在当前的研究中,介绍了一种新的催化体系,该体系基于固定在沸石-SO 3 H上的Fe 3 O 4纳米粒子(Fe 3 O 4 @沸石-SO 3 H)。在第一阶段中,沸石@ SO 3 H是得自沸石NaY与用氯磺酸来产生zeolo硫酸反应合成。然后,铁3 ö 4 @沸石-SO 3 H为制备 经 官能化沸石的NaY的表面作为支撑上固定的磁性纳米颗粒。Fe 3 O 4 @沸石-SO 3FT-IR,FE-SEM,XRD,EDS,BET和VSM技术将H视为多功能纳米平台系统。该纳米复合材料在无溶剂条件下催化合成亚氨基吡啶衍生物时显示出很高的活性。结合基于固体酸的纳米复合材料和磁性分离的优点,该方法对perimidines的一般合成方法进行了有效且大大改进的修饰。循环实验证实了纳米催化剂具有六次良好的稳定性和恒定的活性。