Next Article in Journal
On the High Structural Heterogeneity of Fe-Impregnated Graphitic-Carbon Catalysts from Fe Nitrate Precursor
Next Article in Special Issue
Experimental Design and Optimization of Triclosan and 2.8-Diclorodibenzeno-p-dioxina Degradation by the Fe/Nb2O5/UV System
Previous Article in Journal
Montmorillonite K10-Catalyzed Solvent-Free Conversion of Furfural into Cyclopentenones
Previous Article in Special Issue
Zirconia-Supported Silver Nanoparticles for the Catalytic Combustion of Pollutants Originating from Mobile Sources
Article Menu

Export Article

Open AccessCommunication
Catalysts 2019, 9(4), 302; https://doi.org/10.3390/catal9040302

Layered Double Hydroxides as Bifunctional Catalysts for the Aryl Borylation under Ligand-Free Conditions

1
Laboratório de Química Supramolecular e de Sólidos, Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-909, Brazil
2
Faculdade de Engenharia, Universidade do Estado do Rio de Janeiro, Rio de Janeiro 20550-900, Brazil
3
Instituto Federal do Rio de Janeiro, Campus Rio de Janeiro, Rio de Janeiro 20270-021, Brazil
4
Instituto de Química, Universidade do Estado do Rio de Janeiro, Rio de Janeiro 20550-900, Brazil
*
Authors to whom correspondence should be addressed.
Received: 29 January 2019 / Revised: 4 March 2019 / Accepted: 18 March 2019 / Published: 27 March 2019
  |  
PDF [5316 KB, uploaded 27 March 2019]
  |     |  

Abstract

Organic 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
Keywords: boronic esters; borylation; Suzuki–Miyaura; layered double hydroxides; copper; palladium boronic esters; borylation; Suzuki–Miyaura; layered double hydroxides; copper; palladium
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Supplementary material

SciFeed

Share & Cite This Article

MDPI and ACS Style

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.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Catalysts EISSN 2073-4344 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top