scholarly journals An advancement in the synthesis of nano Pd@magnetic amine-Functionalized UiO-66-NH2 catalyst for cyanation and O-arylation reactions

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Firouz Matloubi Moghaddam ◽  
Atefeh Jarahiyan ◽  
Mahdi Heidarian Haris ◽  
Ali Pourjavadi
Keyword(s):  
Magnetic Property ◽  
Magnetic Nanoparticles ◽  
Heterogeneous Catalyst ◽  
Catalytic System ◽  
Aryl Halides ◽  
Optimal Conditions ◽  
Efficient Catalyst ◽  
Catalyst Structure ◽  
Mild Conditions ◽  
Amine Functionalized

AbstractThe magnetic MOF-based catalytic system has been reported here to be an efficient catalyst for synthesis of benzonitriles and diarylethers of aryl halides under optimal conditions. The MOF catalyst was built based on magnetic nanoparticles and UiO-66-NH2 which further modified with 2,4,6-trichloro-1,3,5-triazine and 5-phenyl tetrazole at the same time and the catalyst structure was confirmed by various techniques. This new modification has been applied to increase anchoring palladium into the support. Furthermore, the products’ yields were obtained in good to excellent for all reactions under mild conditions which result from superior activity of the synthesized heterogeneous catalyst containing palladium. Also, the magnetic property of the MOF-based catalyst makes it easy to separate from reaction mediums and reuse in the next runs.

Chiral Mn(III) Salen Complex Immobilized on CuFe2O4@SiO2-NH2 NPs: A Cheap and Efficient Catalyst for N-arylation of Aryl Halides and Phenylboronic Acid Under Mild Conditions

2020 ◽  
Vol 17 (11) ◽  
pp. 857-863
Author(s):  
Mohammad Ali Nasseri ◽  
Seyyedeh Ameneh Alavi ◽  
Milad Kazemnejadi ◽  
Ali Allahresani
Keyword(s):  
Phenylboronic Acid ◽  
Significant Loss ◽  
Aryl Halides ◽  
Coupling Reactions ◽  
Efficient Catalyst ◽  
Aryl Chlorides ◽  
Mild Conditions ◽  
Cross Coupling Reactions ◽  
Salen Complex ◽  
Ft Ir

A convenient and efficient chiral CuFe2O4@SiO2-Mn(III) Ch.salen nanocatalyst has been developed for the C-N cross-coupling reactions of aryl halides/ phenylboronic acid with N-heterocyclic compounds in water and/or DMSO under mild conditions. The catalyst could be applied for the N-arylation of a variety of nitrogen-containing heterocycles with aryl chlorides, bromides, iodides and phenylboronic acid under mild conditions. Moderate to good yields were achieved for all substrates. The structure of catalyst was characterized using various techniques including FT-IR, FE-SEM, EDX, XRD, TEM and TGA. The catalyst can be simply recovered and reused for several times without significant loss of activity.

scholarly journals A New Heterogeneous Catalyst Obtained via Supramolecular Decoration of Graphene with a Pd2+ Azamacrocyclic Complex

Molecules ◽  
2019 ◽  
Vol 24 (15) ◽  
pp. 2714 ◽  
Author(s):  
Matteo Savastano ◽  
Paloma Arranz-Mascarós ◽  
Maria Paz Clares ◽  
Rafael Cuesta ◽  
Maria Luz Godino-Salido ◽  
...  
Keyword(s):  
Heterogeneous Catalyst ◽  
Self Assembly ◽  
Room Temperature ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Assembly Process ◽  
Efficient Catalyst ◽  
Mild Conditions ◽  
Cross Coupling Reaction ◽  
Green Procedure

A new G-(H2L)-Pd heterogeneous catalyst has been prepared via a self-assembly process consisting in the spontaneous adsorption, in water at room temperature, of a macrocyclic H2L ligand on graphene (G) (G + H2L = G-(H2L)), followed by decoration of the macrocycle with Pd2+ ions (G-(H2L) + Pd2+ = G-(H2L)-Pd) under the same mild conditions. This supramolecular approach is a sustainable (green) procedure that preserves the special characteristics of graphene and furnishes an efficient catalyst for the Cu-free Sonogashira cross coupling reaction between iodobenzene and phenylacetylene. Indeed, G-(H2L)-Pd shows an excellent conversion (90%) of reactants into diphenylacetylene under mild conditions (50 °C, water, aerobic atmosphere, 14 h). The catalyst proved to be reusable for at least four cycles, although decreasing yields down to 50% were observed.

Palladium-catalyzed carbonylation of aryl halides: an efficient, heterogeneous and phosphine-free catalytic system for aminocarbonylation and alkoxycarbonylation employing Mo(CO)6 as a solid carbon monoxide source

RSC Advances ◽  
2016 ◽  
Vol 6 (82) ◽  
pp. 78468-78476 ◽  
Author(s):  
Abdol-Reza Hajipour ◽  
Zeinab Tavangar-Rizi ◽  
Nasser Iranpoor
Keyword(s):  
Carbon Monoxide ◽  
Heterogeneous Catalyst ◽  
Catalytic System ◽  
Palladium Nanoparticles ◽  
Aryl Halides ◽  
Solid Carbon ◽  
Highly Efficient ◽  
Palladium Catalyzed

Preparation and characterization of palladium nanoparticles immobilized on magnetic methionine-functionalized chitosan as a highly efficient, air stable, and readily reusable heterogeneous catalyst in carbonylation reactions.

P-arylation of aryl halides by an environmentally compatible method

2017 ◽  
Vol 95 (12) ◽  
pp. 1280-1284 ◽  
Author(s):  
Sara Sobhani ◽  
Zahra Vahidi
Keyword(s):  
Magnetic Nanoparticles ◽  
Heterogeneous Catalyst ◽  
Boronic Acid ◽  
Aryl Halides ◽  
External Magnet ◽  
Neat Water ◽  
Aryl Iodides ◽  
Different Types

In this paper, palladium–DABCO complex supported on magnetic nanoparticles was successfully used as a new magnetically recoverable heterogeneous catalyst for the synthesis of arylphosphonates via P-arylation of different types of aryl halides (aryl iodides/bromides/chlorides and benzene boronic acid/sulfonate), with phosphite esters (triethyl/triphenyl/tri-iso-propyl/diethyl/diphenyl/di-iso-propyl phosphite) in neat water without using any additive. The heterogeneous catalyst was easily isolated from the reaction mixture by an external magnet and reused five times without significant degradation in its activity.

scholarly journals Nickel-catalyzed electrochemical carboxylation of unactivated aryl and alkyl halides with CO2

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Guo-Quan Sun ◽  
Wei Zhang ◽  
Li-Li Liao ◽  
Li Li ◽  
Zi-Hao Nie ◽  
...  
Keyword(s):  
Catalytic System ◽  
Functional Group ◽  
Alkyl Halides ◽  
Aryl Halides ◽  
Aryl Chlorides ◽  
Mild Conditions ◽  
Aryl Bromides ◽  
Alkyl Bromides ◽  
Pseudo Halides ◽  
Electrochemical Carboxylation

AbstractElectrochemical catalytic reductive cross couplings are powerful and sustainable methods to construct C−C bonds by using electron as the clean reductant. However, activated substrates are used in most cases. Herein, we report a general and practical electro-reductive Ni-catalytic system, realizing the electrocatalytic carboxylation of unactivated aryl chlorides and alkyl bromides with CO2. A variety of unactivated aryl bromides, iodides and sulfonates can also undergo such a reaction smoothly. Notably, we also realize the catalytic electrochemical carboxylation of aryl (pseudo)halides with CO2 avoiding the use of sacrificial electrodes. Moreover, this sustainable and economic strategy with electron as the clean reductant features mild conditions, inexpensive catalyst, safe and cheap electrodes, good functional group tolerance and broad substrate scope. Mechanistic investigations indicate that the reaction might proceed via oxidative addition of aryl halides to Ni(0) complex, the reduction of aryl-Ni(II) adduct to the Ni(I) species and following carboxylation with CO2.

scholarly journals Benzoylation of aryl methyl ether using catalytic system of Gd(OTf)3/MSAA

2015 ◽  
Vol 18 (2) ◽  
pp. 221-227
Author(s):  
Phuong Hoang Tran ◽  
Hai Truong Nguyen ◽  
Thach Ngoc Le
Keyword(s):  
Microwave Irradiation ◽  
Benzoic Acid ◽  
Organic Synthesis ◽  
Catalytic System ◽  
Aromatic Compounds ◽  
Good Yield ◽  
Efficient Catalyst ◽  
Mild Conditions ◽  
Work Up ◽  
Aryl Methyl

The Friedel-Crafts acylation is an important reaction in organic synthesis. Benzoylation of aromatic compounds with benzoic acid as acylating reagent using catalytic system of Gd(OTf)3/MSAA was investigated under microwave irradiation. Catalytic system of Gd(OTf)3/MSAA was found to be an efficient catalyst for FriedelCrafts benzoylation under mild conditions. In addition, Gd(OTf)3/MSAA is safe-to-handle, simple clean work-up and gives good yield.

scholarly journals Novel Cobalt Complex as an Efficient Catalyst for Converting CO2 into Cyclic Carbonates under Mild Conditions

Catalysts ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 951
Author(s):  
Wei Fan ◽  
Wen-Zhen Wang ◽  
Li Wang ◽  
Xin-Gang Jia ◽  
Lei-Lei Li ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Catalytic System ◽  
Catalytic Mechanism ◽  
Cobalt Complex ◽  
Catalytic Performance ◽  
High Catalytic Activity ◽  
Cyclic Carbonates ◽  
Efficient Catalyst ◽  
Metal Centers ◽  
Mild Conditions

Based on the ligand H2dpPzda (1), a novel cobalt complex [Co(H2dpPzda)(NCS)2]·CH3OH(2) has been synthesized and characterized. The Complex 2 exhibited excellent catalytic performance for converting CO2 into cyclic carbonates under mild conditions. For propylene oxide (PO) and CO2 synthesis of propylene carbonate (PC), the catalytic system showed a remarkable TOF as high as 29,200 h−1. The catalytic system also showed broad substrate scope of epoxide. Additionally, the catalyst could be recycled to maintain the integrity of the structure and remained equal to the level of its catalytic activity even after seven catalytic rounds. Additionally, a possible catalytic mechanism was proposed due to the high catalytic activity which might be owing to the synergism of Lewis acidic metal centers and N group.

Mild Temperature Copper-Catalyzed Amination of Aryl Halides with Aqueous Ammonia in the Presence of Pyridyldiketone Ligands

2019 ◽  
Author(s):  
Racha Abed Ali Abdine ◽  
Anna Walczak ◽  
Sultan Abu A Aeash ◽  
Gracjan Kurpik ◽  
Artur R. Stefankiewicz ◽  
...  
Keyword(s):  
Catalytic System ◽  
Aqueous Ammonia ◽  
Aryl Halides ◽  
Efficient Coupling ◽  
Ambidentate Ligand ◽  
Mild Temperature

Ambidentate ligand pyridyldiketones were used in combination with copper to catalyze maintain of aryl halides under very mild temperatures. This novel catalytic system allow efficient coupling in one of the smoothest conditions ever reported in literature.

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