Implanted mixed ligand Ni complex of phenolic Schiff base and 2, 2' bipyridine on MCM-41 as an efficient catalyst for Suzuki–Miyaura cross-coupling reactions: a greener approach.

A new mixed ligand Ni complex of phenolic Schiff base and 2,2' bipyridine was implanted on MCM-41 to prepare a simple and reusable catalyst. The designed heterogeneous catalyst has been characterized by FT-IR, PXRD analysis, N2 adsorption and desorption, SEM–EDX, TEM, ICP-OES and TGA. The synthesized Ni-MCM-41 is utilized as a potential catalyst against the Suzuki cross-coupling reaction of a wide range of aryl/alkyl/allyl halides with aryl boronic acid in DMF: water/water under microwave irradiation with the yield up to 95 / 86% of the catalytic product. Moreover, short reaction time, easy workup, eco-friendly, low cost and reusability of catalyst up to four times without a noteworthy loss of its activity are some of the merits of this method. The hot filtration test has been ratified that there was no leaching of metal during the catalytic reaction, indicating the heterogeneous manner of the catalyst. [ABSTRACT FROM AUTHOR]