Layered Double Hydroxides as Bifunctional Catalysts for the Aryl Borylation under Ligand-Free Conditions
AbstractOrganic derivatives of boron, such as boronic esters and acids, are important precursors for a wide range of environmental, energy, and health applications. Several catalytic methods for their synthesis have been reported, even though with the use of toxic and structurally complex ligands. Herein, we demonstrate preliminary studies envisaging the synthesis of boronic esters from an inexpensive catalytic system based on Cu/Al layered double hydroxides (LDH) in the presence of Na2PdCl4. The Cu/ Al LDHs were prepared according to coprecipitation method and characterized by X-ray diffraction (XRD) (with Rietveld refinement) to evaluate the contamination with malachite and other phases. Preliminary catalytic results suggest that pure Cu/Al LDH has potential for the borylation of aryl iodides/ bromides in the absence of base. Indeed, a synergic effect between copper and palladium is possibly related to the catalytic efficiency. View Full-Text
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Silva, L.C.L.L.F.; Neves, V.A.; Ramos, V.S.; Silva, R.S.F.; Campos, J.B.; Silva, A.A.; Malta, L.F.B.; Senra, J.D. Layered Double Hydroxides as Bifunctional Catalysts for the Aryl Borylation under Ligand-Free Conditions. Catalysts 2019, 9, 302.
Silva LCLLF, Neves VA, Ramos VS, Silva RSF, Campos JB, Silva AA, Malta LFB, Senra JD. Layered Double Hydroxides as Bifunctional Catalysts for the Aryl Borylation under Ligand-Free Conditions. Catalysts. 2019; 9(4):302.Chicago/Turabian Style
Silva, Lorenna C.L.L.F.; Neves, Vinícius A.; Ramos, Vitor S.; Silva, Raphael S.F.; Campos, José B.; Silva, Alexsandro A.; Malta, Luiz F.B.; Senra, Jaqueline D. 2019. "Layered Double Hydroxides as Bifunctional Catalysts for the Aryl Borylation under Ligand-Free Conditions." Catalysts 9, no. 4: 302.
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