Heck reaction catalyzed by a recyclable palladium supported on shell powder

Abstract

A novel palladium catalyst supported on shell powder has been prepared, and its application to the Heck reaction of aryl iodides with olefins has been reported. The results showed that the novel catalyst had extremely high activities for the reactions with the average yield over 90%. Also, this catalyst showed excellent stability in Heck reactions, being reused three times. The catalyst was characterized by X-ray powder diffraction and field-emission scanned electron microscopy images, and the energy dispersive X-ray analyzer.

Microstructure-stability relations studies of porous chitosan microspheres supported palladium catalysts

“…The cross-coupling product ((E)-butyl cinnamate) was characterized by its spectroscopic data ( 1 H NMR and GC/MS) and melting point. The characterization result was consistent with the literatures [27,29].…”

Progress in organic reactions catalyzed by bimetallic nanomaterials

“…Pd-catalyzed cross-coupling reactions, such as the Heck, Suzuki, and Sonogashira reactions, have become some of the most important organic transformations in synthetic chemistry for forming C-C bonds [66], and the use of Pd nanoparticles in these coupling reactions has been studied extensively [67][68][69][70]. Recent studies on these reactions have focused on enhancing the activity, selectivity, and stability of the catalysts used as well as elucidating the catalytic reaction mechanisms by designing a variety of novel Pd-based BNMs.…”

Palladium Nanoparticles Immobilized on Individual Calcium Carbonate Plates Derived from Mussel Shell Waste: An Ecofriendly Catalyst for the Copper‐Free Sonogashira Coupling Reaction

“…Unlike precipitated calcium carbonate, which is a calcite polymorphism, calcium carbonate derived from natural shells is an aragonite polymorph that has higher biocompatibility, density, and hardness, all of which make it a suitable material in the plastic, paper, glass, fiber, and other industries. In terms of a catalyst support, a simple ground shell particle (SP) was used in C−C bond formation to support Cu and Pd in the Heck, Ullmann, and click reactions with good recyclability. Such a property is attributed to the chelation of surface chitin and protein molecules to metal species.…”