Facile and efficient synthesis of benzo[b][1,5]diazepines by three-component coupling of aromatic diamines, Meldrum’s acid, and isocyanides catalyzed by Fe3O4 nanoparticles
作者:Mohammad Ali Ghasemzadeh、Nasim Ghasemi-Seresht
DOI:10.1007/s11164-014-1915-z
日期:2015.11
Highly effective one-pot synthesis of benzo[b][1,5]diazepines has been achieved by three-component (or, in situ, including catalyst and solvent, five-component) reaction of aromatic diamines, Meldrum’s acid, and isocyanides catalyzed by magnetite (Fe3O4) nanoparticles. Pharmaceutically and biologically active heterocyclic compounds including benzodiazepine derivatives were efficiently synthesized in excellent yields and short reaction times at room temperature. The significant features of the Fe3O4 nanoparticles are: easy preparation, cost-effectiveness, high stability, easy separation, low loading, and reusability of the catalyst. The heterogeneous nanoparticles were fully characterized by XRD, EDX, BET, SEM, TEM, and FT-IR analysis.
通过芳香二胺、梅尔德伦酸和异氰酸酯的三组分(或原位,包括催化剂和溶剂的五组分)反应,催化剂为磁铁矿(Fe3O4)纳米颗粒,高效实现了一锅法合成苯并[b][1,5]二氮杂烯。具有药用和生物活性的杂环化合物,包括苯二氮杂衍生物,在室温下以优良的产率和短反应时间被有效合成。Fe3O4纳米颗粒的显著特性包括:制备简单、成本有效、高稳定性、易分离、低负载及催化剂的可重复使用。对这些异质纳米颗粒进行了XRD、EDX、BET、SEM、TEM和FT-IR分析的全面表征。