A novel magnetically heterogeneous catalyst based on the immobilization of boron sulfonic acid onto Fe 3 O 4 @SiO 2 nanoparticles (Fe 3 O 4 @SiO 2 –BSA) is reported. It was characterized via FT-IR, XRD, SEM, EDS, and VSM analysis.
A new nanocatalyst based on the immobilization of tungstic acid onto 3-chloropropyl-grafted TiO 2 -coated Fe 3 O 4 nanoparticles (Fe 3 O 4 @TiO 2 @(CH 2 ) 3 OWO 3 H) was prepared, characterized, and applied for the synthesis of pyrano[2,3-c]pyrazoles.
1 April 2012 in Journal of Molecular Catalysis A: Chemical