An efficient method for enhancement in the catalytic activity of dual-porous Co(BDC-NH2) MOF Au-decorated nanoparticle through post-synthetic modification

Abstract

An efficient and reusable catalyst by stepwise post-synthetic modification (PSM) of surface nitrogen-enriched Co(BDCNH2) metal-organic frameworks (MOFs) to synthesize the [Co(BDCNH2)-AuNTf2] complex. The [Co(BDCNH2)-AuNTf2] catalyst shows excellent performance when bonding AuNTf2 NPs to the Co(BDCNH2) substrate. The structure of the catalyst [Co(BDCNH2)-AuNTf2] was elucidated by FT-IR, XRD, SEM, BET, EDS, ICP, and TGA techniques. Furthermore, the catalytic activity of the heterogeneous Au catalyst was investigated in the intermolecular hydroamination reactions of allenamides with arylamines, and the synthesis of allylamino E-enamides was carried out in very high yield and selectivity under mild conditions at low catalyst ratios. One of the most important advantages of the catalyst is that it can be recovered by centrifugation without significant loss of catalytic activity and can be easily reused repeatedly.