A highly efficient magnetic solid acid nanocatalyst for the synthesis of new bulky heterocyclic compounds
作者:Masoud Nasr-Esfahani、Zahra Rafiee、Morteza Montazerozohori、Hassan Kashi
DOI:10.1039/c6ra02749k
日期:——
analyzer (EDAX), vibrating sample magnetometry (VSM) and the dynamic light scattering (DLS) measurement technique. The catalyst showed high thermal stability and good reusability. Some new bulky heterocyclic compounds such as bis(2,4,5-triarylimidazole), bis(1,4-dihydropyridine), bis(1,8-dioxooctahydroxanthene) and bis(1,8-dioxo-decahydroacridine) derivatives were synthesized using 4,4′-(alkylazanediyl)dibenzaldehyde
制备Fe 3 O 4纳米颗粒,并用3-氨基丙基三乙氧基硅烷(APTES)涂覆。将形成的胺表面的Fe 3 O 4 @APTES NP进一步用马来酸酐(MAH)化学修饰以生成Fe 3 O 4@ APTES·MAH NP。通过FT-IR,X射线衍射(XRD),扫描电子显微镜(SEM),透射电子显微镜(TEM),热重分析(TG),能量色散X射线分析仪(EDAX),振动样品磁力分析对催化剂进行了表征(VSM)和动态光散射(DLS)测量技术。该催化剂显示出高的热稳定性和良好的可重复使用性。合成了一些新的大体积杂环化合物,例如双(2,4,5-三芳基咪唑),双(1,4-二氢吡啶),双(1,8-二氧代八氢氧杂蒽)和双(1,8-二氧代十氢ac啶)衍生物。 4,4' - (alkylazanediyl)二苯甲醛作为底物和Fe 3 ö 4个@APTES或Fe 3 ö 4@ APTES·MAH作为催化剂。分离出高纯