• 文献标题:   Cu(II)-supported graphene quantum dots modified NiFe2O4: A green and efficient catalyst for the synthesis of 4H-pyrimido[2,1-b]benzothiazoles in water
  • 文献类型:   Article, Early Access
  • 作  者:   KHAZENIPOUR K, MOEINPOUR F, MOHSENISHAHRI FS
  • 作者关键词:   4hpyrimido2, 1bbenzothiazole, graphene quantum dot, nanocatalyst, nife2o4
  • 出版物名称:   JOURNAL OF THE CHINESE CHEMICAL SOCIETY
  • ISSN:   0009-4536 EI 2192-6549
  • 通讯作者地址:   Islamic Azad Univ
  • 被引频次:   0
  • DOI:   10.1002/jccs.202000213 EA SEP 2020
  • 出版年:  

▎ 摘  要

NiFe(2)O(4)nanoparticles are modified by graphene quantum dots (GQDs) and utilized to stabilize the Cu(II) nanoparticles as a novel magnetically retrievable catalytic system (Cu(II)/GQDs/NiFe2O4) for green formation of 4H-pyrimido[2,1-b]benzothiazoles. The prepared catalyst can be isolated assisted by an outer magnet and recovered for five courses without significant reduction in its efficiency. The as-prepared magnetic heterogeneous nanocomposite was characterized by UV-Vis, FT-IR, XRD, EDS, VSM, TEM, and ICP. Performing the reactions in environmentally friendly and affordable conditions (water), the low catalyst percentage, high yield of products, short reaction times, and easy workup are the merits of this protocol.