1,5-benzodiazepines have been synthesized by Nano Zirconia and Nano Sulfated Zirconia in solvent free conditions. Synthesis was carried out by conventional as well as microwave method. Benzodiazepines were synthesized by reacting o-phenylenediamine and few ketones in the presence of catalytic amount of Nanoparticles. Particles used were sized in between 53-100 nm. Nanoparticles were characterized by FT-IR, DLS and powder XRD analysis.
International Letters of Chemistry, Physics and Astronomy (Volume 36)
M. B. Gondaliya et al., "Reusable Nanocatalyst: Zirconia and Sulfated Zirconia", International Letters of Chemistry, Physics and Astronomy, Vol. 36, pp. 295-302, 2014