Abstract
At first, a novel graphene oxide-based magnetic nanocomposite namely Si-propyl-functionalized N (1),N (1),N (2),N (2)-tetramethylethylenediamine-N (1),N (2)-diium hydrogen sulfate anchored to graphene oxide-supported Fe(3)O(4) (nano-[GO@Fe(3)O(4)@R-NHMe(2)][HSO(4)]) was fabricated. After full characterization of the nanocomposite, its catalytic performance was examined for the solvent-free construction of N,N'-alkylidene bisamides from aryl aldehydes (1 eq.) and primary aromatic and aliphatic amides (2 eq.), in which the products were acquired in short times (15-30 min) and high to excellent yields (89-98%). Nano-[GO@Fe(3)O(4)@R-NHMe(2)][HSO(4)] could be magnetically isolated form the reaction medium, and reused three times without remarkable loss of catalytic activity.