Copper iodide nanoparticles supported on magnetic aminomethylpyridine functionalized cellulose: a new heterogeneous and recyclable nanomagnetic catalyst for facile access to N-sulfonylamidines under solvent free conditions

In this study, a highly active catalyst based on copper iodide nanoparticles supported on magnetic aminomethylpyridine functionalized cellulose has been synthesized and characterized. Its catalytic activity was investigated in the multicomponent synthesis of N-sulfonylamidines via an in situ generated sulfonyl ketenimine intermediate under solvent free conditions at room temperature. The desired products were obtained in good to excellent yields at short reaction times. Based on observed results, the synthesized catalyst was an efficient, magnetically separable, recyclable and green catalyst from a natural source.