The gap between supply and demand of propylene has become more evident, because a large consumption the downstream products derived from propylene. Propane dehydrogenation (PDH) constitutes an important alternative for production propylene, thus considerable attention been paid to development eco-friendly cost-efficient catalysts this process. Herein, we discover that Sn-Beta zeolite with Lewis...

A triple cascade was developed using a simple copper catalyst to trans-selectively access bicyclic isoxazolidines in a one-pot synthesis. This strategy features the in situ generation of nitrones and subsequent trapping by [3 + 2] cycloaddition. In this method, copper serves three catalytic functions: as a Lewis acid for the ene reaction, as an organometallic for aerobic oxidation, and as a Lew...

Heterogeneous catalysis and their application in industrial-scale organic synthesis of fine chemicals are greatly facilitated by catalysis and further on by catalyst recovery and recycles to fits most “principles of green chemistry. In acid media, terpenoids generally undergoes various transformations. The terpenoid transformations include various liquid Bronsted and Lewis Acids, Acid clays, He...

Abstract Hydrothermal and catalytic stability of UIO-66 MOFs with defective structures are critical aspects to be considered in their applications, especially under the conditions involving water, moisture and/or heat. Here, we report a facile strategy introduce macromolecular acid group improve resulting UIO-66—PhSO 3 H MOF aqueous phase catalysis. In detail, was obtained by grafting benzenesu...

A multicatalytic approach that combines a bifunctional Brønsted base-squaramide organocatalyst and Ag+ as Lewis acid has been applied in the reaction of unactivated ketones with tert-butyl isocyanoacetate to give chiral oxazolines bearing a quaternary stereocenter. The formal [3+2] cycloaddition provided high yields of the corresponding cis-oxazolines with good diastereoselectivity and excellen...

This chapter deals with acid–base bifunctional heterogeneous catalyst surfaces with organofunctional groups. One of the most important issues for bifunctional heterogeneous catalysis is the coexistence of incompatible catalytic species, such as acid and base, nearby on a same solid particle surface. In nucleophilic reactions, acid–base bifunctional catalysts enable the activation of both nucleo...

Furfural is a platform molecule that can be catalytically converted using cascade series of reactions into levulinic esters, essential compounds used as fuel additives. Bifunctional catalysts containing Lewis and Brønsted acid sites such zeolites are commonly for these conversions. However, microporous often present diffusional restriction due to the size similarity furfural other molecules zeo...