%0 Journal Article %T Sulfanilic Acid Supported on Magnetic Nanoparticles as a Green Catalyst for the Sonosynthesis of 1,4-Diazepines Containing Tetrazole Ring %J Organic Chemistry Research %I Iranian Chemical Society %Z 2383-242X %A Safaei-Ghomi, Javad %A Paymard-Samani, Soleiman %A Shahbazi-Alavi, Hossein %D 2020 %\ 05/01/2020 %V 6 %N 2 %P 159-172 %! Sulfanilic Acid Supported on Magnetic Nanoparticles as a Green Catalyst for the Sonosynthesis of 1,4-Diazepines Containing Tetrazole Ring %K 1 %K 4-Diazepine %K Magnetic nanoparticles %K Ultrasonic irradiation %K Heterogeneous catalyst %R 10.22036/org.chem.2020.217095.1230 %X Magnetic nanoparticle-supported sulfanilic acid (MNPs-PhSO3H) has been used as an efficient catalyst for the preparation of 1,4-diazepines containing tetrazole ring. The catalyst has been characterized by FT-IR (Fourier-transform infrared spectroscopy), SEM (scanning electron microscope), XRD (X-ray diffraction) and VSM (vibrating-sample magnetometer). The present synthetic protocol provides several advantages such as easy work-up, excellent yields, short reaction times, reusability of the catalyst and low catalyst loading. The present catalytic procedure is extensible to a wide diversity of substrates for the synthesis of a variety-oriented library of 1,4-diazepines containing tetrazole ring. %U https://www.orgchemres.org/article_107627_e8c43687eb928166085bc2fc1ee99431.pdf