A New Imidazole-Functionalized 3d-Cobalt Metal-Organic Framework As A High Ef Fi Ciency Heterogeneous Catalyst For Knoevenagel Condensation Reaction Of Furfural

We have synthesized a new 3D Co(II) based metal-organic framework [Co(pytpy)(AIP)center dot H2O]n(1)(C2/c)(pytpy = 4'-(4-pyridyl)-4,2':6',4 ''-terpyridine,AIP = 5-aminoisophthalic acid) by solvothermal method. Its crystal structure was determined with single-crystal X-ray diffraction (SC-XRD) techniques. And then Imidazole groups were introduced into 1 by schiff base post-synthetic reaction to make a lewis base sites rich MOF-based catalyst (2). X-ray diffraction (XRD) and Fourier Transform Infrared spectroscopy (FTIR) was obtained to determined the content and structure of 2. The post-synthetic MOF-based catalyst showed an excellent performance in Knoevenagel Condensation Reaction of furfural. Moreover, we also tested the catalytic performance for others homologues of furfural and malononitrile. The experimental results are also satisfactory. (C) 2020 Elsevier B.V. All rights reserved.