Cu(II) picolinate complex decorated on aminoclay as a novel efficient heterogeneous phosphine-free catalyst for amination of aryl halides with N(H)-heterocycles

this work, we have firstly synthesized aminoclay immobilized Cu(II) complex as a new heterogeneous Cu(II) picolinic acid complex under mild and ecofriendly condition with a short and simple process in green solvent and then, the performance of this heterogeneous system was investigated in the N-arylation of nitrogen heterocycles with aryl halides to afford the corresponding coupled products in good to excellent yields without using external ligands or additives as promoters. Furthermore, the catalyst retained its catalytic performance even after 5 runs with minimum amount of copper leaching.

کلیدواژه ها:

Aminoclay ، Nanocatalyst ، Amination ، Copper complex ، Heterogeneous