Fabrication of a novel graphene oxide based magnetic nanocomposite and its usage as a highly effectual catalyst for the construction of N , N '-alkylidene bisamides.

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.
Competing Interests: There are no conflicts to mention.
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