construction of a novel magnetic nanomaterial, and its utility as an effectual catalyst for the fabrication of 1, 8-dioxo-octahydroxanthenes

At first, construction and characterization of a novel magnetic nanomaterial titled n1-(si-pr)-(n1,n1,n4,n4-tetramethylbenzene-1,4-diaminium) chloride dihydrogen phosphate grafted on fe3o4@sio2 (stcdfs) have been described. the characterization has been accomplished by edx, elemental mapping, fe-sem, ft-ir, xrd, and vsm analyses. in continue, effectual and quick fabrication of 1,8-dioxo-octahydroxanthenes form aryl aldehydes and dimedone using stcdfs in solvent-free conditions has been reported. the xanthenes were acquired in 92-98% in 5-10 min. moreover, the catalyst was reusable for one time without remarkable decrement in its performance.