Building a Green, Robust, and Efficient Bi-MOF HeterogeneousCatalyst for the Strecker Reaction of Ketones

In this work, we present the new[Bi14(mu 3-O)9(mu 4-O)2(mu 3-OH)5(3,5-DSB)5(H2O)3]middot7H2O,BiPF-4(bismuth polymeric frame-work???4) MOF, its microwave hydrothermal synthesis, as well as its behavior as aheterogeneous catalyst in the multicomponent organic Strecker reaction. TheBiPF-4material shows a three-dimensional (3D) framework formed by peculiarinorganic oxo-hydroxo-bismutate layers connected among them through the 3,5-dsb (3,5-disulfobenzoic acid) linker. These two-dimensional (2D) layers, built byjunctions of Bi7 polyhedra SBU, provide the material of many Lewis acid catalyticsites because of the mixing in the metal coordination number.BiPF-4is a highlyrobust, green, and stable material that demonstrates an excellent heterogeneouscatalytic activity in the multicomponent Strecker reaction of ketones carried outin one-pot synthesis, bringing a reliable platform of novel green materials basedon nontoxic and abundant metal sources such as bismuth.

Automated summary

In this study, a new BiPF-4 material and its synthesis and catalytic activity were presented. The 2D layers of BiPF-4, formed by Bi7 polyhedra, provide numerous active sites for Lewis acid catalysis. The material exhibits excellent heterogeneous catalytic activity in the multicomponent Strecker reaction.