@article { ISI:000240352900023, title = {Ossification: a new approach to immobilize metal complex catalysts - applications to carbonylation and Suzuki coupling reactions}, journal = {Journal of Catalysis}, volume = {242}, number = {1}, year = {2006}, month = {AUG}, pages = {231-238}, publisher = {ACADEMIC PRESS INC ELSEVIER SCIENCE}, type = {Article}, address = {525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA}, abstract = {

A simple approach for immobilization of transition metal complexes is reported here based on the transformation of the complex into its intrinsically insoluble counterpart, thus generating solid molecular catalysts. This approach that we call {\textquoteleft}{\textquoteleft}ossification{\textquoteright}{\textquoteright} is based on a principle, in which the water-soluble analogues of the metal complexes are precipitated out from aqueous solutions as insoluble ionic ensembles having catalytically active metal-centered coordination environments and robust framework. The approach has been illustrated for I{\textquoteright}d complex catalyzed carbonylation and Suzuki coupling reactions. {\textquoteleft}{\textquoteleft}Ossification{\textquoteright}{\textquoteright} was found to be an economically and environmentally attractive alternative to other exotic immobilization methodologies. (c) 2006 Elsevier Inc. All rights reserved.

}, keywords = {Carbonylation, Heterogeneous catalysts, Immobilization, ossification, Palladium complex, Suzuki coupling}, issn = {0021-9517}, doi = {10.1016/j.jcat.2006.05.032}, author = {Sarkar, Bibhas R. and Chaudhari, Raghunath V.} } @article { ISI:000251574400013, title = {Phosphine ligand and base-free, Pd-catalyzed oxidative cross-coupling reaction of arylboronic acids with arylmercuric acetates}, journal = {Arkivoc}, number = {14}, year = {2007}, month = {JAN}, pages = {126-133}, publisher = {ARKAT USA INC}, type = {Article}, address = {C/O ALAN R KATRITZKY, UNIV FLORIDA, DEPT CHEMISTRY, PO BOX 117200, GAINESVILLE, FL 32611 USA}, abstract = {

Arylmercuric acetates have been found to undergo Suzuki type cross coupling reactions with arylboronic acids catalyzed by palladium salts in non-polar solvents under ambient conditions to give biaryl derivatives in high yields. The reaction is mild and does not require any organic or inorganic base nor a phosphine ligand.

}, keywords = {Arylboronic acid, arylmercuric acetate, palladium salts, Suzuki coupling}, issn = {1424-6376}, author = {Emmanuvel, Lourdusamy and Sudalai, Arumugam} } @article { ISI:000260290500013, title = {Efficient synthesis of antifungal pyrimidines via palladium catalyzed Suzuki/Sonogashira cross-coupling reaction from Biginelli 3,4-dihydropyrimidin-2(1H)-ones}, journal = {Tetrahedron}, volume = {64}, number = {44}, year = {2008}, month = {OCT}, pages = {10214-10223}, publisher = {PERGAMON-ELSEVIER SCIENCE LTD}, type = {Article}, address = {THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND}, abstract = {

An efficient regioselective approach to the synthesis of tetrasubstituted pyrimidines was developed by sequential functionalization of easily available Biginelli 3,4-dihydropyrimidine-2(1H)-ones via dehydrogenation, chlorination followed by palladium catalyzed C-C Suzuki/Sonogashira coupling reaction. All the synthesized compounds were evaluated in vitro for their antifungal activities against Candida albicans, Cryptococcus neoformans, Benjaminiella poitrasii, Yarrowia lipolytica, and Fusarium oxysporum, and antibacterial activities against Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus. (c) 2008 Elsevier Ltd. All rights reserved.

}, keywords = {Antifungal activities, Biginelli compounds, chlorination, Oxidation, Pyrimidines, Suzuki coupling}, issn = {0040-4020}, doi = {10.1016/j.tet.2008.08.033}, author = {Gholap, Atul R. and Toti, Kiran S. and Shirazi, Fazal and Deshpande, Mukund V. and Srinivasan, Kumar V.} } @article {45761, title = {Synthesis and characterization of D-2PA-Pd(II)@SBA-15 catalyst via {\textquoteleft}{\textquoteleft}click chemistry{\textquoteright}{\textquoteright}: highly active catalyst for Suzuki coupling reactions}, journal = {Journal of Porous Materials}, volume = {24}, year = {2017}, month = {APR}, pages = {327-340}, type = {Article}, abstract = {

Copper catalysed cycloaddition reaction between azide and terminal alkyne, called as {\textquoteleft}{\textquoteleft}click reaction{\textquoteright}{\textquoteright}, was found to be modular approach for the synthesis of facile, highly efficient and recoverable D-2PA-Pd(II)@SBA-15 catalyst. In efforts to synthesize the catalyst, the cycloaddition reaction between azido-functionalized mesoporous SBA-15 and N,N-dimethyl-2-propynylamine (D-2PA) has been carried out, followed by the complexation with PdCl2. To analyze physiochemical properties of synthesized materials, various characterization techniques such as CHN elemental analysis, X-ray diffraction, solid state C-13 and Si-29 NMR spectra, FT-IR, XPS, SEM, TEM and N-2 sorption analysis, TGA and DTA, UV-Vis spectroscopy have been carried out. The synthesized catalyst, D-2PA-Pd(II)@SBA-15, exhibited excellent catalytic activities with good product yield and high TON towards Suzuki coupling reaction of various aryl halides with phenylboronic acid. The effect of solvent, base and temperature on coupling reactions has also been described. The developed protocol offers recyclability of catalyst for multiple (four) times without any appreciable loss in stability and catalytic reactivity.

}, keywords = {Click reaction, Cycloaddition, mesoporous materials, SBA-15, Suzuki coupling}, issn = {1380-2224}, doi = {10.1007/s10934-016-0266-0}, author = {Pathak, Aruna and Singh, A. P.} } @article {47082, title = {Bimetallic nano alloy architecture on a special polymer: Ni or Cu merged with Pd for the promotion of the Mizoroki-Heck reaction and the Suzuki-Miyaura coupling}, journal = {Journal of Chemical Sciences}, volume = {133}, year = {2021}, month = {FEB }, pages = {8}, type = {Article}, abstract = {

Novel Ni-Pd and Cu-Pd bimetallic nano alloys was designed and heterogenized on the highly robust ABPBI [poly(2,5-benzimidazole)] polymer in high yields using NaBH4 as reducing agent. These were versatile ligand free catalysts for the Mizoroki-Heck reaction and Suzuki-Miyaura coupling. The bimetallic Ni-Pd-ABPBI catalyst for the Mizoroki-Heck reaction of 4-iodo anisole could be recycled 5 times with high yields. Aryl bromides could also be activated for the Mizoroki-Heck reaction using Cu-Pd-ABPBI NP catalysts, with moderate yields. Graphic abstractSynopsis Novel bimetallic Ni-Pd and Cu-Pd nano alloys, heterogenized on the robust ABPBI [poly(2,5-benzimidazole)] polymer using NaBH4 as reducing agent, is described. These were versatile ligand free, noble metal conservative catalysts, for the Mizoroki-Heck reaction and the Suzuki-Miyaura coupling. Aryl bromides were activated for the Mizoroki-Heck reaction using the Cu-Pd-ABPBI catalyst.

}, keywords = {Bimetallic nano alloys, Cu-Pd-ABPBI, Mizoroki-Heck reaction, Ni-Pd-ABPBI, Suzuki coupling}, issn = {0974-3626}, doi = {10.1007/s12039-020-01870-6}, author = {Patil, Vijay P. and Kashid, Abhijit A. and Solanki, Bhanupratap S. and Kharul, Ulhas K. and Iyer, Suresh} } @article {46754, title = {Bimetallic Ni-Pd synergism-mixed metal catalysis of the mizoroki-heck reaction and the suzuki-miyaura coupling of aryl bromides}, journal = {Catalysis Letters}, volume = {151}, year = {2021}, month = {FEB}, pages = {353-358}, type = {Article}, abstract = {

A combination of Pd and Ni complexes activated aryl bromides for the thermal Mizoroki-Heck reaction and Suzuki coupling giving high yields in short reaction times. A thermal redox mechanism probably occurs whereby Ni complex transfers electron and reduces the Pd (II) to Pd (0) which then takes the reactants through the standard protocol of oxidative-addition, migratory insertion and reductive elimination, typical for the Mizoroki-Heck reaction and the Suzuki coupling. [GRAPHICS] .

}, keywords = {Bimetallic catalysis, Mizoroki-Heck, Nickel complexes, Pd(OAc)2, Suzuki coupling}, issn = {1011-372X}, doi = {10.1007/s10562-020-03330-9, Early Access Date = AUG 2020}, author = {Kashid, Abhijit A. and Patil, Dharmaraj J. and Mali, Ramling D. and Patil, Vijay P. and Neethu, T. V. and Meroliya, Heena K. and Waghmode, Shobha A. and Iyer, Suresh} } @article {46700, title = {Oxime ligands for Pd catalysis of the mizoroki-heck reaction, suzuki-miyaura coupling \& annulation reactions}, journal = {Synthetic Communications}, volume = {51}, year = {2021}, month = {JAN }, pages = {308-316}, type = {Article}, abstract = {

Monodentate and bidentate chelating oximes are readily available ligands for the Pd catalysis of the Mizoroki-Heck reaction and the Suzuki coupling. High yields were obtained in the Suzuki coupling in aqueous dioxane with TBABr as additive. The oximes can be easily synthesized from the corresponding ketones or aldehydes and thus provide a very large number of nitrogen-based ligands. They have the advantage of not undergoing oxidative degradation, common for phosphine ligands. Chelating oximes with Pd(OAc)(2), activate aryl iodides to give high yields of the substitution products in the Mizoroki-Heck reactions as well as the Suzuki coupling. Acetophenone oxime ligand with Pd(OAc)(2), catalyzed the reaction of aryl iodides with 1,2-disubstituted alkenes in moderate to high yields. As a test example, the LaRock indole annulation and synthesis of isocoumarin were achieved with acetophenone oxime ligand and Pd(OAc)(2)in high yields.

}, keywords = {Isocoumarin, LaRock annulation, Mizoroki-Heck reaction, oximes, Suzuki coupling}, issn = {0039-7911}, doi = {10.1080/00397911.2020.1826969, Early Access Date = SEP 2020}, author = {Bangar, Pronnoy G. and Nahide, Pradip D. and Meroliya, Heena K. and Waghmode, Shobha A. and Iyer, Suresh} } @article {48743, title = {Bimetallic quantum dots (Cu-Pd, Ni-Pd) catalyzed reaction of bromo arenes with alkenes and aryl boronic acids}, journal = {Indian Journal of Chemistry}, volume = {62}, year = {2023}, month = {AUG}, pages = {843-848}, type = {Article}, abstract = {

Bimetallic quantum dots (Cu-Pd and Ni-Pd) are active ligand-free catalysts for the alkenylation and arylation of aryl bromides. The catalysts are easy to synthesize by benign green protocols and characterized by various techniques. The bimetallic QD catalysts synthesized thus are superior to Pd(OAc)2 or other Pd NP catalysis of alkenylation reactions of aryl bromides with similar E-selectivity. The reaction of aryl bromide with aryl boronic acid is facile with high yields.

}, keywords = {Aryl bromides, Bimetallic QDs catalysis, Cu-Pd, Mizoroki-Heck, Ni-Pd, Suzuki coupling}, issn = {0019-5103}, doi = {10.56042/ijc.v62i8.4769}, author = {Raut, Pallavi K. and Meroliya, Heena K. and Dumbre, Swapnil R. and Patil, Vaishali N. and Solanki, Bhanupratap S. and Waghmode, Shobha A. and Iyer, Suresh} }