Synthesis of new TCH/Ni‐based nanocomposite supported on SBA‐15 and its catalytic application for preparation of benzimidazole and perimidine derivatives
作者:Mehdi Kalhor、Fahimeh Rezaee‐Baroonaghi、Akbar Dadras、Zohre Zarnegar
DOI:10.1002/aoc.4784
日期:2019.5
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
通过用3-氯丙基三乙氧基硅烷(CPTES)和硫代碳酰肼(TCH)对二氧化硅纳米颗粒进行表面改性,然后与Ni(II)进行金属配体配位,合成了稳定的镍修饰SBA-15纳米复合材料(Ni / TCH @ SBA-15)。该有机金属纳米复合材料的结构通过傅立叶变换红外,场发射扫描电子显微镜,EDAX,透射电子显微镜,原子吸收光谱和N 2表征。吸附-解吸(Brunauer-Emmett-Teller)技术。测定了Ni / TCH @ SBA-15(NNTS-15)的催化性能,用于合成2-芳基取代的苯并咪唑和2,3-二氢过碘化吡啶。这些合成规程的重要优点是在较短的反应时间内获得优异的收率,简化的催化方法,无毒且反应干净,温和的反应条件和简便的后处理程序。此外,结合在SBA-15表面上的Ni(II)在催化反应条件下是稳定的,从而可有效回收和再利用。