A cellulose based magnetic nanocomposite possessing NHC-Cu Complex has been synthesized and characterized. It was then applied as a highly active catalyst in one-pot three-component reaction of sulfonyl azides, secondary amines and triethylamine to afford N-sulfonylformamidines. Copper catalyzed oxidative transformation of C-N bond of triethylamine is a key step to give desired products. In contrast with the good reactivity of the conventional secondary amines, aromatic amines and NH containing heteroaromatics had no activity in these reactions. Moreover, the used nanocatalyst which could be recovered by external magnet, showed reasonable catalytic activity for several times.

已经合成并表征了具有NHC-Cu配合物的纤维素基磁性纳米复合材料。然后将其用作高活性催化剂，用于磺酰叠氮化物，仲胺和三乙胺的一锅三组分反应，得到N-磺酰基甲am。铜催化三乙胺的CN键的氧化转化是获得所需产物的关键步骤。与常规仲胺的良好反应性相反，芳族胺和含NH的杂芳族化合物在这些反应中没有活性。而且，所使用的可以被外磁体回收的纳米催化剂多次显示出合理的催化活性。