Design, synthesis and application of a magnetic H-bond catalyst in the preparation of new nicotinonitriles cooperative vinylogous anomeric-based oxidation.

Herein, we designed and synthesized a new H-bond magnetic catalyst with 2-tosyl--(3-(triethoxysilyl)propyl)hydrazine-1-carboxamide as a sensitive H-bond donor/acceptor. We created an organic structure with a urea moiety on the magnetic nanoparticles, which can function as a hydrogen bond catalyst. Hydrogen bond catalysts serve as multi-donor/-acceptor sites.