Metformin modifed UiO-66-NH2 as a super basic nanocatalyst for the four component synthesis of dihydropyridines

Following a published method⁴³UiO-66-NH₂ was prepared from the reaction of 2-aminoterephthalic acid and Zirconium tetrachloride in hydrochloric acid. Then, we functionalized the surface of the UiO-66-NH₂ with 1,4-dichlorobutane (1,4-nButCl) as a…