Novel palladium nanoparticles supported on β‐cyclodextrin@graphene oxide as magnetically recyclable catalyst for Suzuki–Miyaura cross‐coupling reaction with two different approaches in bio‐based solvents
A novel nanocatalyst was designed and prepared. Initially, the surface of magnetic graphene oxide (M ‐GO) was modified using thionyl chloride, tris(hydroxymethyl)aminomethane and acryloyl chloride as linkers which provide reactive C═C bonds for the polymerization of vinylic monomers. Separately, β‐cyclodextrin (β‐CD) was treated with acryloyl chloride to provide a modified β‐CD. Then, in the presence methylenebisacrylamide as a cross‐linker, monomers of modified β‐CD and acrylamide were polymerized on the surface of the pre‐prepared M‐GO. Finally, palladium acetate and sodium borohydride were added t...
Source: Applied Organometallic Chemistry - November 7, 2018 Category: Chemistry Authors: Bahareh Heidari,
Majid M. Heravi,
Mohammad Reza Nabid,
Roya Sedghi,
Seyyed Emad Hooshmand Tags: FULL PAPER Source Type: research
Ru (III) Schiff ‐base complex anchored on nanosilica as an efficient and retrievable catalyst for hydration of nitriles
A bio ‐sourced nanosilica supported Ru (III) Schiff‐base complex has been developed and found excellent catalytic efficiency for the hydration of nitriles ini‐PrOH at 40 °C with five times recyclability without significant loss in activity. Transition metal catalyzed hydration of nitriles is an attractive methodology for amide synthesis, and hence recently attracted wide attention. It is one of the significant organic transformations as amides play a vital role in biological, pharmaceutical and industrial applications. In this work, we report the synthesis of a new solid supported Ru (III) Schiff base complex, Ru@i...
Source: Applied Organometallic Chemistry - November 7, 2018 Category: Chemistry Authors: Samim Sultana,
Geetika Borah,
Pradip K. Gogoi Tags: FULL PAPER Source Type: research
CuBr ‐catalysed one‐pot multicomponent synthesis of 3‐substituted 2‐thioxo‐2,3‐dihydroquinazolin‐4(1H)‐one derivatives
Synthesis of 3 ‐aryl‐2‐thioxo‐2,3‐dihydroquinazolin‐4(1H) ‐one. A novel methodology is presented for the synthesis of 3 ‐substituted 2‐thioxo‐2,3‐dihydroquinazolin‐4(1H) ‐one derivatives based on an efficient tandem multicomponent reaction using copper bromide as catalyst. This methodology is based on the multicomponent one‐pot reaction of methyl 2‐bromobenzoate, phenylisothiocyanate derivatives and sodium azide in the presence of copper bromide andl‐proline under basic conditions. To show the generality of the method, various phenylisothiocyanates bearing electron‐donating or electron‐w...
Source: Applied Organometallic Chemistry - November 7, 2018 Category: Chemistry Authors: Mohammad Hosein Sayahi,
Seyyed Jafar Saghanezhad,
Saeed Bahadorikhalili,
Mohammad Mahdavi Tags: FULL PAPER Source Type: research
Transition metal complexes of nano bidentate organometallic Schiff base: Preparation, structure characterization, biological activity, DFT and molecular docking studies
Theoretical electronic absorption transitions for Schiff base ligand (HL) in ethanol solvent. An organometallic NO ‐bidentate Schiff base, (2‐(1‐((1‐carboxyethyl)imino)ethyl) cyclopenta‐2,4‐dien‐1‐yl)(cyclopenta‐2,4‐dien‐1‐yl) iron (HL) was synthesized by condensation of 2‐acetylferrocene with amino acid alanine. Then its octahedral Cr (III), Mn (II), Fe (III), Co (II), Ni (II), Cu (II) , Zn (II) and Cd (II) complexes were synthesized. All compounds were characterized on the basis of elemental analysis (C, H, N and M), molar conductivity, FT‐IR, UV–Vis,1H ‐NMR, SEM, mass analysis and thermal...
Source: Applied Organometallic Chemistry - November 7, 2018 Category: Chemistry Authors: Walaa H. Mahmoud,
Reem G. Deghadi,
Maher M.I. El Desssouky,
Gehad G. Mohamed Tags: FULL PAPER Source Type: research
Green Synthesis of new Trizole Based Heterocyclic Amino Acids Ligands and their Transition Metal Complexes. Characterization, Kinetics, Antimicrobial and Docking Studies
Two novel amino acids imine ligands (H2L1 and H2L2) have been synthesized using green condensation reaction from 2 ‐[3‐Amino‐5‐(2‐hydroxy‐phenyl)‐5‐methyl‐1,5‐dihydro‐[1,2,4]triazol‐4‐yl]‐3‐(1H‐indol‐3‐yl)‐propionic acid with benzaldehyde / p‐flouro benzaldehyde (1:1 molar ratio) in the presence of lemon juice as a natural acidic catalyst in aqueous medium. Two novel amino acids imine ligands (H2L1 and H2L2) have been synthesized using green condensation reaction from 2 ‐[3‐Amino‐5‐(2‐hydroxy‐phenyl)‐5‐methyl‐1,5‐dihydro‐[1, 2, 4]triazol‐4‐yl]‐3‐(1H‐in...
Source: Applied Organometallic Chemistry - November 7, 2018 Category: Chemistry Authors: A.M. El ‐Saghier,
H.F. Abd El‐Halim,
Laila H. Abdel‐Rahman,
A. Kadry Tags: FULL PAPER Source Type: research
MIL ‐53(Fe) Metal–Organic Frameworks (MOFs) as an Efficient and Reusable Catalyst for the One‐Pot Four‐Component Synthesis of Pyrano[2,3‐c]‐pyrazoles
In this work a highly effective method for the synthesis of pyrano[2,3 ‐c]‐pyrazole derivatives via four‐component condensation reactions of malononitrile, hydrazine hydrate, ethylacetoacetate, and substituted aldehydes is described using MIL‐53(Fe) as a catalyst in ethanol at room temperature. A novel and simple approach for the efficient and rapid synthesis of pyrano[2,3 ‐c]‐pyrazoleshas been accomplished via the four‐component condensation reaction of malononitrile, hydrazine hydrate, ethyl acetoacetate, and substituted aldehydes using MIL‐53(Fe) metal–organic framework (MOF) as a catalyst in ethanol a...
Source: Applied Organometallic Chemistry - November 7, 2018 Category: Chemistry Authors: Mohammad Ali Ghasemzadeh,
Boshra Mirhosseini ‐Eshkevari,
Mohammad Hossein Abdollahi‐Basir Tags: FULL PAPER Source Type: research
Solvent effects on catalytic activity of manganese porphyrins with cationic, anionic and uncharged meso substituents: Indirect evidence on the nature of active oxidant species
Solvent effects on the oxidation of olefins with periodate in water, acetonitrile, methanol and dichloromethane catalyzed by the manganese(III) complexes of meso ‐tetra(aryl)porphyrins (aryl = phenyl, 3‐methylpyridyl, 4‐sulfonatophenyl) have been studied to provide indirect evidence on the nature of active oxidants. Oxidation of cyclohexene and styrene with sodium periodate and tetra ‐n‐butylammonium periodate (TBAP) catalyzed by MnT(3‐MePy)P(OAc), MnT(4‐SO3)PP(OAc) and MnTPP(OAc) has been studied in water, methanol, acetonitrile and dichloromethane as solvents. The results show significant dependence of th...
Source: Applied Organometallic Chemistry - November 7, 2018 Category: Chemistry Authors: Zahra Esfandiari bayat,
Hajar Rahiminezhad,
Saeed Zakavi Tags: FULL PAPER Source Type: research
Cu (II) tyrosinate complexes containing methyl substituted phenanthrolines: Synthesis, X ‐ray crystal structures, biomolecular interactions, antioxidant activity, ROS generation and cytotoxicity
A new ternary copper (II) tyrosinate complexes containing methyl substituted 1,10 ‐phenanthrolines have been synthesized and characterized by CHN analysis, cyclic voltammetry, ESI‐MS, FTIR and single‐crystal X‐ray diffraction techniques. They have been tested for theirin vitro DNA/BSA interactions by the spectroscopic methods. These complexes exhibited higher cytotoxic and ROS activities. In this paper, three new copper (II) complexes, [Cu(4 ‐mphen)(tyr)(H2O)]ClO4(1), [Cu(5 ‐mphen)(tyr)(H2O)]ClO4·1.5H2O(2) and [Cu (tmphen)(tyr)(NO3)]0.5H2O(3) (4 ‐mphen: 4‐methyl‐1,10‐phenanthroline, 5‐mphen: 5‐meth...
Source: Applied Organometallic Chemistry - November 7, 2018 Category: Chemistry Authors: Duygu İnci,
Rahmiye Aydın,
Özgür Vatan,
Huzeyfe Huriyet,
Yunus Zorlu,
Bünyemin Çoşut,
Nilüfer Çinkılıç Tags: FULL PAPER Source Type: research
Ru (III) Schiff ‐base complex anchored on nanosilica as an efficient and retrievable catalyst for hydration of nitriles
A bio ‐sourced nanosilica supported Ru (III) Schiff‐base complex has been developed and found excellent catalytic efficiency for the hydration of nitriles ini‐PrOH at 40 °C with five times recyclability without significant loss in activity. Transition metal catalyzed hydration of nitriles is an attractive methodology for amide synthesis, and hence recently attracted wide attention. It is one of the significant organic transformations as amides play a vital role in biological, pharmaceutical and industrial applications. In this work, we report the synthesis of a new solid supported Ru (III) Schiff base complex, Ru@i...
Source: Applied Organometallic Chemistry - November 7, 2018 Category: Chemistry Authors: Samim Sultana,
Geetika Borah,
Pradip K. Gogoi Tags: FULL PAPER Source Type: research
CuBr ‐catalysed one‐pot multicomponent synthesis of 3‐substituted 2‐thioxo‐2,3‐dihydroquinazolin‐4(1H)‐one derivatives
Synthesis of 3 ‐aryl‐2‐thioxo‐2,3‐dihydroquinazolin‐4(1H) ‐one. A novel methodology is presented for the synthesis of 3 ‐substituted 2‐thioxo‐2,3‐dihydroquinazolin‐4(1H) ‐one derivatives based on an efficient tandem multicomponent reaction using copper bromide as catalyst. This methodology is based on the multicomponent one‐pot reaction of methyl 2‐bromobenzoate, phenylisothiocyanate derivatives and sodium azide in the presence of copper bromide andl‐proline under basic conditions. To show the generality of the method, various phenylisothiocyanates bearing electron‐donating or electron‐w...
Source: Applied Organometallic Chemistry - November 7, 2018 Category: Chemistry Authors: Mohammad Hosein Sayahi,
Seyyed Jafar Saghanezhad,
Saeed Bahadorikhalili,
Mohammad Mahdavi Tags: FULL PAPER Source Type: research
Transition metal complexes of nano bidentate organometallic Schiff base: Preparation, structure characterization, biological activity, DFT and molecular docking studies
Theoretical electronic absorption transitions for Schiff base ligand (HL) in ethanol solvent. An organometallic NO ‐bidentate Schiff base, (2‐(1‐((1‐carboxyethyl)imino)ethyl) cyclopenta‐2,4‐dien‐1‐yl)(cyclopenta‐2,4‐dien‐1‐yl) iron (HL) was synthesized by condensation of 2‐acetylferrocene with amino acid alanine. Then its octahedral Cr (III), Mn (II), Fe (III), Co (II), Ni (II), Cu (II) , Zn (II) and Cd (II) complexes were synthesized. All compounds were characterized on the basis of elemental analysis (C, H, N and M), molar conductivity, FT‐IR, UV–Vis,1H ‐NMR, SEM, mass analysis and thermal...
Source: Applied Organometallic Chemistry - November 7, 2018 Category: Chemistry Authors: Walaa H. Mahmoud,
Reem G. Deghadi,
Maher M.I. El Desssouky,
Gehad G. Mohamed Tags: FULL PAPER Source Type: research
Green Synthesis of new Trizole Based Heterocyclic Amino Acids Ligands and their Transition Metal Complexes. Characterization, Kinetics, Antimicrobial and Docking Studies
Two novel amino acids imine ligands (H2L1 and H2L2) have been synthesized using green condensation reaction from 2 ‐[3‐Amino‐5‐(2‐hydroxy‐phenyl)‐5‐methyl‐1,5‐dihydro‐[1,2,4]triazol‐4‐yl]‐3‐(1H‐indol‐3‐yl)‐propionic acid with benzaldehyde / p‐flouro benzaldehyde (1:1 molar ratio) in the presence of lemon juice as a natural acidic catalyst in aqueous medium. Two novel amino acids imine ligands (H2L1 and H2L2) have been synthesized using green condensation reaction from 2 ‐[3‐Amino‐5‐(2‐hydroxy‐phenyl)‐5‐methyl‐1,5‐dihydro‐[1, 2, 4]triazol‐4‐yl]‐3‐(1H‐in...
Source: Applied Organometallic Chemistry - November 7, 2018 Category: Chemistry Authors: A.M. El ‐Saghier,
H.F. Abd El‐Halim,
Laila H. Abdel‐Rahman,
A. Kadry Tags: FULL PAPER Source Type: research
Novel palladium nanoparticles supported on β‐cyclodextrin@graphene oxide as magnetically recyclable catalyst for Suzuki–Miyaura cross‐coupling reaction with two different approaches in bio‐based solvents
A novel nanocatalyst was designed and prepared. Initially, the surface of magnetic graphene oxide (M ‐GO) was modified using thionyl chloride, tris(hydroxymethyl)aminomethane and acryloyl chloride as linkers which provide reactive C═C bonds for the polymerization of vinylic monomers. Separately, β‐cyclodextrin (β‐CD) was treated with acryloyl chloride to provide a modified β‐CD. Then, in the presence methylenebisacrylamide as a cross‐linker, monomers of modified β‐CD and acrylamide were polymerized on the surface of the pre‐prepared M‐GO. Finally, palladium acetate and sodium borohydride were added t...
Source: Applied Organometallic Chemistry - November 7, 2018 Category: Chemistry Authors: Bahareh Heidari,
Majid M. Heravi,
Mohammad Reaz Nabid,
Roya Sedghi,
Seyyed Emad Hooshmand Tags: FULL PAPER Source Type: research
MIL ‐53(Fe) Metal–Organic Frameworks (MOFs) as an Efficient and Reusable Catalyst for the One‐Pot Four‐Component Synthesis of Pyrano[2,3‐c]‐pyrazoles
In this work a highly effective method for the synthesis of pyrano[2,3 ‐c]‐pyrazole derivatives via four‐component condensation reactions of malononitrile, hydrazine hydrate, ethylacetoacetate, and substituted aldehydes is described using MIL‐53(Fe) as a catalyst in ethanol at room temperature. A novel and simple approach for the efficient and rapid synthesis of pyrano[2,3 ‐c]‐pyrazoleshas been accomplished via the four‐component condensation reaction of malononitrile, hydrazine hydrate, ethyl acetoacetate, and substituted aldehydes using MIL‐53(Fe) metal–organic framework (MOF) as a catalyst in ethanol a...
Source: Applied Organometallic Chemistry - November 7, 2018 Category: Chemistry Authors: Mohammad Ali Ghasemzadeh,
Boshra Mirhosseini ‐Eshkevari,
Mohammad Hossein Abdollahi‐Basir Tags: FULL PAPER Source Type: research
Solvent effects on catalytic activity of manganese porphyrins with cationic, anionic and uncharged meso substituents: Indirect evidence on the nature of active oxidant species
Solvent effects on the oxidation of olefins with periodate in water, acetonitrile, methanol and dichloromethane catalyzed by the manganese(III) complexes of meso ‐tetra(aryl)porphyrins (aryl = phenyl, 3‐methylpyridyl, 4‐sulfonatophenyl) have been studied to provide indirect evidence on the nature of active oxidants. Oxidation of cyclohexene and styrene with sodium periodate and tetra ‐n‐butylammonium periodate (TBAP) catalyzed by MnT(3‐MePy)P(OAc), MnT(4‐SO3)PP(OAc) and MnTPP(OAc) has been studied in water, methanol, acetonitrile and dichloromethane as solvents. The results show significant dependence of th...
Source: Applied Organometallic Chemistry - November 7, 2018 Category: Chemistry Authors: Zahra Esfandiari bayat,
Hajar Rahiminezhad,
Saeed Zakavi Tags: FULL PAPER Source Type: research
