In this work, 4,6-diamino-2-mercaptopyrimidine was applied as an outstanding chelating agent for the synthesis of a new nickel metal-organic framework (Ni-DAMP-MOF) as a reusable, selective and efficient catalyst. The obtained Ni-DAMP-MOF was characterized by BET, SEM, WDX, EDS, FT-IR, XRD, and AAS techniques. Then, this metal-organic framework was applied as a novel catalyst in the selective oxidation of sulfides to sulfoxides and synthesis of pyranopyrazole derivatives. All products were obtained with high yields and good purity based on 1H NMR spectroscopy of the products, which indicate the practical activity of Ni-DAMP-MOF as catalyst. Pyranopyrazoles exhibit significant biological properties [1,2] and sulfoxide derivatives are an important material in organic chemistry which have some biological activities [3]. Also, Ni-DAMP-MOF was shown a excellent selectivity in the oxidation of sulfides to sulfoxides. Finally, the recoverability and reusability of this catalyst were investigated as an important principle in green chemistry.
