Microorganisms produce metal nanoparticles (MNPs) upon exposure to toxic metal ions. However, the catalytic activity of biosynthesised MNPs remains underexplored, despite the potential of these biological processes to be used for the sustainable recovery of critical metals, including palladium. Herein we report that biogenic palladium nanoparticles generated by the sulfate-reducing bacterium G20 catalyse the ligand-free Suzuki Miyaura reaction of abiotic substrates. The reaction is highly efficient (>99% yield, 0.5 mol% Pd), occurs under mild conditions (37 °C, aqueous media) and can be accelerated within biocompatible micelles at the cell membrane to yield products containing challenging biaryl bonds. This work highlights how native metabolic processes in anaerobic bacteria can be combined with green chemical technologies to produce highly efficient catalytic reactions for use in sustainable organic synthesis.
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http://dx.doi.org/10.1039/d1gc02392f | DOI Listing |
Chem Commun (Camb)
January 2025
Department of Applied Chemistry, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan.
Acetonitrile is a low-viscosity solvent that can enhance charge transfer kinetics at the electrode/electrolyte interface, although its cathodic instability limits its demonstration. This study employed a dual-compartment cell separated by a solid electrolyte to demonstrate that an acetonitrile-based electrolyte enhanced the interfacial charge transfer kinetics compared to those of carbonate-based electrolytes.
View Article and Find Full Text PDFOrg Lett
January 2025
School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States.
Natural product biosynthesis is nature's tinkering ground for developing new enzymes that can achieve chemical transformations that are outside the purview of traditional chemical catalysis. Herein we describe a genome mining approach that leads to the discovery of a halogenase that regioselectively brominates a tryptophan side chain indole for a macrocyclic peptide substrate, enabling downstream chemical arylation by Suzuki-Miyaura coupling. The halogenase was found to prefer a macrocyclic peptide substrate over a linear peptide.
View Article and Find Full Text PDFInorg Chem
January 2025
College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan 250014, P. R. China.
As an indispensable member of the reticular material family, metal-carbon-based organometallic frameworks (OMFs) remain largely underexplored, and no chiral OMFs (COMFs) have been reported thus far. Herein, we first report the construction of COMFs from a Pd-isocyanide OMF via nucleophilic addition to the Pd-isocyanide moiety with optically pure amines. The obtained Pd-bis(acyclic diaminocarbene) (Pd-BADC)-derived chiral OMFs display excellent applicability and can be reusable chiral catalysts to highly promote asymmetric Strecker and Suzuki-Miyaura cross-coupling reactions in a heterogeneous way.
View Article and Find Full Text PDFMolecules
December 2024
Laboratoire de Chimie de Coordination, CNRS, Toulouse-INP, Université de Toulouse, 31000 Toulouse, France.
In recent years, there has been growing interest in the development of greener alternatives to traditional reagents used in carbon-carbon coupling reactions, particularly in response to environmental concerns. The commonly used aryl halides, despite being highly reactive in the Suzuki-Miyaura coupling (SMC), pose significant environmental risks. As a result, research has shifted towards exploring the use of phenols, which are widely accessible and environmentally benign.
View Article and Find Full Text PDFChem Asian J
January 2025
Huazhong University of Science and Technology, School of Chemisry & Chemical Engineering, 1037 Luoyu Road, 430074, Wuhan, CHINA.
Using a direct knitting strategy, we successfully prepared a novel heterogeneous catalyst consisting of pyridine-bridged bis(imidazolium-2-ylidene) palladium complexes (CNC-Pd) embedded in a knitted network polymer. The resulting catalysts (HCP-CNC-Pd-d) exhibited high specific surface areas of 982 m2 g-1 with microporous and mesoporous structures. The large surface area enhances contact between the substrate and the catalytic center, while the strong chelation between CNC and the metal ion ensures the catalyst's durability.
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