Recyclable graphene-supported palladium nanocomposites for Suzuki coupling reaction

2016 ◽  
Vol 5 (2) ◽  
Author(s):  
Praveenkumar Ramprakash Upadhyay ◽  
Vivek Srivastava
Keyword(s):  
Suzuki Reaction ◽  
Coupling Reaction ◽  
Phosphine Ligands ◽  
Reaction Products ◽  
Suzuki Coupling Reaction ◽  
Cross Coupling Reaction ◽  
Optimized Protocol ◽  
Reduced Graphene ◽  
Wide Range ◽  
Supported Palladium

AbstractIn the search of new materials for developing clean catalytic organic reactions, our team engineered graphene based palladium (Pd) nanocomposites and tested them as catalysts for ionic liquid mediated Suzuki cross coupling reaction. The effects of various reaction parameters, such as solvent, base, time and temperature, were investigated for the Suzuki reaction. The optimized protocol was applied to a wide range of substituted aryl/hetroaryl halides along with various aryl boronic acids and afforded the corresponding reaction products in good to excellent yield. The proposed Pd/reduced graphene oxide (rGO) catalyzed Suzuki reaction protocol was also exploited for the synthesis of unique indazole derivatives. The developed catalytic system circumvents the use of phosphine ligands, with an added advantage of easy Pd catalyst recovery up to eight times.

Electrochemical Synthesis of 2-Hydroxy-para-terphenyls by Dehydrogenative Anodic C–C Cross-Coupling Reaction

Synlett ◽  
2019 ◽  
Vol 30 (10) ◽  
pp. 1174-1177 ◽  
Author(s):  
Sebastian Lips ◽  
Robert Franke ◽  
Siegfried R. Waldvogel
Keyword(s):  
Functional Groups ◽  
Electrochemical Synthesis ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Cross Coupling Reaction ◽  
Wide Range ◽  
Broad Variety ◽  
First Time ◽  
Fast Access

The anodic C–C cross-coupling reaction provides fast access to a wide range of bi- and terarylic scaffolds by electrochemically mediated arylation reactions. Herein, a metal- and reagent-free electrosynthetic protocol for the synthesis of nonsymmetrical 2-hydroxy-para-teraryl derivatives is presented for the first time. It is scalable, easy to conduct, and allows the use of a broad variety of different functional groups.

ChemInform Abstract: Ligand-Free Solid-Supported Palladium(0) Nano/Microparticles Promoted C-O, C-S, and C-N Cross-Coupling Reaction.

ChemInform ◽  
2012 ◽  
Vol 43 (52) ◽  
pp. no-no
Author(s):  
Bandna Bandna ◽  
Nitul Ranjan Guha ◽  
Arun K. Shil ◽  
Dharminder Sharma ◽  
Pralay Das
Keyword(s):  
Coupling Reaction ◽  
Cross Coupling ◽  
Cross Coupling Reaction ◽  
Ligand Free ◽  
Supported Palladium

scholarly journals Studies on Pd/NiFe2O4 catalyzed ligand-free Suzuki reaction in aqueous phase: synthesis of biaryls, terphenyls and polyaryls

2011 ◽  
Vol 7 ◽  
pp. 310-319 ◽  
Author(s):  
Sanjay R Borhade ◽  
Suresh Babsaheb Waghmode
Keyword(s):  
Active Catalyst ◽  
Suzuki Reaction ◽  
Reaction Times ◽  
Coupling Reaction ◽  
Solvent Mixture ◽  
Phase Synthesis ◽  
Suzuki Coupling Reaction ◽  
Arylboronic Acids ◽  
Highly Active ◽  
Ligand Free

Palladium supported on nickel ferrite (Pd/NiF2O4) was found to be a highly active catalyst for the Suzuki coupling reaction between various aryl halides and arylboronic acids. The reaction gave excellent yields (70–98%) under ligand free conditions in a 1:1 DMF/H2O solvent mixture, in short reaction times (10–60 min). The catalyst could be recovered easily by applying an external magnetic field. The polyaryls were similarly synthesized.

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