Silica grafted DBU supported NiCl2 complex, SiO2@DBU-NiCl2 has been designed and synthesized by multistep approach and characterized by FT-IR, XRD, EDS, FE-SEM and TGA. Catalytic activity of SiO2@DBU-NiCl2 has been explored for A3 coupling of terminal alkynes, aldehydes and secondary amines. Special features of present protocol are high TONs and TOFs, low catalyst loading (0.08 mol %), solvent-free conditions and reusability of the catalyst.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.