Functionalized GO@ZIF-90-supported sulfuric acid and its application in the catalytic synthesis of sulfonamides

摘要

In this article, the sulfuric acid supported on the graphene oxide@ZIF-90 composite functionalized with ethylenediamine (GZAH) was synthesized and characterized with FTIR, SEM, TEM, EDS, BET, and TGA. Then, the synthesis of some sulfonamides was performed using the as-prepared nanocatalyst via N-acylation reaction. FTIR, (HNMR)-H-1, (CNMR)-C-13, and CHNS techniques were used to identify organic molecules. The best results (93 yield) were obtained using a catalyst (0.1 g) in acetonitrile as a solvent and for 2 h at 60 degrees C. The catalyst was recycled up to 5 times, maintaining efficiency.