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This work describes the route to prepare a novel core-shell catalyst based on 1,4-diazabicyclo[2,2,2]octane (DABCO) supported magnetic nanoparticles (MNPs). The morphology and composition of the obtained catalysts were characterized by Fourier-transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), X-ray powder diffraction (XRD), transmission electron microscopy (TEM), quantum design vibrating sample magnetometer (VSM) and scanning electron microscopy (SEM). These nanomaterials presented high performance as a basic catalyst for Knoevenagel condensation between malononitrile and aldehydes, leading to products with excellent yields (84-99%) and short reaction times (5-60 min). Furthermore, it was also efficient in the condensation of isatins with 4-phenylthiosemicarbazide, resulting in isatin-β-thiosemicarbazones with high yields (81-94%) and short times (60-180 min). It is worth mentioning that the catalyst was recovered and reused in these two kinds of reactions after six cycles without significant yield loss. coreshell core shell 1,4diazabicyclo2,2,2octane 14diazabicyclo222octane diazabicyclooctane 1,4 diazabicyclo 2,2,2 octane 1 4 2 DABCO (DABCO MNPs. MNPs . (MNPs) Fouriertransform Fourier transform FTIR (FTIR spectroscopy TGA, TGA , (TGA) Xray X ray XRD, XRD (XRD) TEM, TEM (TEM) VSM (VSM SEM. SEM (SEM) aldehydes 8499% 8499 84 99% 99 (84-99% 560 5 60 (5-6 min. min min) Furthermore 4phenylthiosemicarbazide, 4phenylthiosemicarbazide phenylthiosemicarbazide phenylthiosemicarbazide, 4-phenylthiosemicarbazide isatinβthiosemicarbazones isatin β thiosemicarbazones 8194% 8194 81 94% 94 (81-94% 60180 180 (60-18 loss 4diazabicyclo2 2octane 14 1, 222 2,2, (MNPs (TGA (XRD (TEM (SEM 849 8 9 (84-99 56 6 (5- 819 (81-94 6018 18 (60-1 4diazabicyclo 22 2,2 (84-9 (5 (81-9 601 (60- 2, (84- ( (81- (60 (84 (81 (6 (8