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This study successfully encapsulated palladium nanoparticles within the metal-organic framework material UiO-66 using a straightforward method. Utilizing a microwave-assisted process, the pores of UiO-66 were activated, and the metal precursors were simultaneously reduced in the presence of a reducing agent. The morphological and physicochemical properties of the resulting material were thoroughly analyzed using various techniques, including EDX, SEM, XRD, TGA, BET, and ICP-OES. UiO-66-NH-Pd demonstrated highly efficient catalytic activity in C-O cross-coupling reactions under mild conditions. Moreover, this nanostructured material offers notable advantages, such as high reaction efficiency, a simple preparation process, and environmentally friendly characteristics. The catalyst was easily recovered via centrifugation and recycled five times without significant palladium leaching or any substantial loss in activity.
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http://dx.doi.org/10.1038/s41598-025-14717-2 | DOI Listing |
Acc Chem Res
August 2025
Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Rd., La Jolla, California 92037, United States.
ConspectusFunctionalization of carbon-hydrogen (C-H) bonds has emerged as a powerful strategy in modern organic synthesis, offering efficient routes to build molecular complexity from simple and abundant substrates. Among various transition-metal catalysts, palladium(II) complexes have proven particularly versatile for C-H activation, owing to the diverse reactivity of carbon-palladium bonds. To advance this approach, the discovery of ligands that can accelerate C-H activation as well as subsequent steps in the catalytic cycle is the pivotal driving force.
View Article and Find Full Text PDFOrg Biomol Chem
August 2025
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China.
A palladium-catalyzed domino Heck/cross-coupling reaction of alkene-tethered aryl iodides with β-chloroenones is reported. This reaction enables the formation of one C-O bond and two C-C bonds to construct bisheterocycles in a single operation an intramolecular carbopalladation, followed by a carbene-based cross-coupling with β-chloroenones as a non-diazo carbene precursor, providing an efficient method for synthesizing furan-linked dihydrobenzofurans/oxindoles in yields up to 98%.
View Article and Find Full Text PDFJ Org Chem
August 2025
College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, P. R. China.
Using 4-bromoindole-3-carboxylic acid derivatives (amides or esters) as substrates, this paper successfully developed a trace water-promoted, palladium-catalyzed "one-pot" reaction strategy for synthesizing 4-amino/alkoxyindole-3-carboxylic acid products. With PdCl (5 mol %) as the precatalyst, Xantphos as the ligand, and cesium pivalate as the additive, this synthetic method innovatively integrates nucleophilic substitution of amides/esters with Pd-catalyzed C-N or C-O cross-coupling into a single reaction system, achieving efficient synergy of multistep transformations. This approach facilitates a modular and rapid assembly of multisubstituted indole-3-carboxylic acids, exhibiting broad functional group compatibility while maintaining good reaction yields.
View Article and Find Full Text PDFSci Rep
August 2025
Division of Research and Innovation, School of Applied and Life Sciences, Uttaranchal University, Dehradun, India.
This study successfully encapsulated palladium nanoparticles within the metal-organic framework material UiO-66 using a straightforward method. Utilizing a microwave-assisted process, the pores of UiO-66 were activated, and the metal precursors were simultaneously reduced in the presence of a reducing agent. The morphological and physicochemical properties of the resulting material were thoroughly analyzed using various techniques, including EDX, SEM, XRD, TGA, BET, and ICP-OES.
View Article and Find Full Text PDFJ Org Chem
August 2025
Department of Chemistry, Laboratory of Peptide and Amyloid Research, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India.
We have developed a novel recyclable coupling reagent, 3-[1,2,3]triazolo[4,5-]pyridin-3-yl 5-chlorothiophene-2-sulfonate (CTSOAt), in a faster and straightforward way. The reagent activates carboxylic acids by forming acyl-OAt intermediates, facilitating the synthesis of amides, esters, and peptides with good yields and excellent chirality retention. The reagent also offers the formation of ketones from carboxylic acids through Pd-catalyzed cross-coupling reactions.
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