Ordered mesoporous SBA ‐15 functionalized with yttrium(III) and cerium(III) complexes: Towards active heterogeneous catalysts for oxidation of sulfides and preparation of 5‐substituted 1H‐tetrazoles
Two novel and eco ‐friendly SBA‐15@Creatinine@M (M = Y and Ce) catalysts were prepared and characterized.
These mesostructured and reusable catalysts can be used efficiently for the synthesis of 5‐substituted 1H‐tetrazoles and for the oxidation of sulfides into sulfoxides.
The products were obtained in high to excellent yields in a short reaction time. Mesoporous SBA ‐15 was synthesized and modified with 3‐chloropropyltrimethoxysilane and then used in immobilization of creatinine groups, which were employed to introduce Y3+ and Ce3+ to give rise to two novel yttrium and cerium catalysts: SBA ‐15@Creatinine@...
Source: Applied Organometallic Chemistry - November 19, 2018 Category: Chemistry Authors: Somayeh Molaei,
Taiebeh Tamoradi,
Mohammad Ghadermazi,
Arash Ghorbani ‐Choghamarani Tags: FULL PAPER Source Type: research
A new nano ‐sized mononuclear Cu (II) complex with N,N‐donor Schiff base ligands: sonochemical synthesis, characterization, molecular modeling and biological activity
A new copper (II) Schiff base complex has been synthesized by reflux and sonochemical methods and was confirmed by different spectroscopic techniques. The complexes (bulk and nano) have been screened for their in vitro microbiology activity against four types of bacteria and three strains of fungi. Finally, the copper complex was optimized at the DFT ‐B3LYP/6–31 + G(d) calculation level using the Gaussian 03 package. A new, simple Cu2+ nano ‐structure Schiff base complex in methanol medium has been synthesized by the ultrasonic method. Structure of the compound was confirmed by FT‐IR, GC‐Mass and other spectros...
Source: Applied Organometallic Chemistry - November 19, 2018 Category: Chemistry Authors: Nahid Zare,
Abedien Zabardasti Tags: FULL PAPER Source Type: research
An efficient in situ reduction and cyclization reaction for synthesis of spiro compound derivatives in Fe –H2O–AcOH medium from nitro compounds
An efficientin situ reduction and cyclization reaction for the synthesis of nitrogen ‐containing spiro compounds is reported, this being a novel method for the synthesis of spiro compounds from nitro compounds. The advantages of this reaction are stable reagents, easily available raw materials, wide range of substrates and high yields. An efficientin situ reduction and cyclization reaction for the synthesis of nitrogen ‐containing spiro compounds directly form 5‐nitro‐1H‐indazole, 6‐nitro‐1H‐indazole and 5‐nitroindole in Fe–H2O –AcOH medium is reported. 5‐Nitro‐1H‐indazole, 6‐nitro‐1H‐inda...
Source: Applied Organometallic Chemistry - November 19, 2018 Category: Chemistry Authors: Hui Xu,
Zhengbing Pan,
Lei Dai,
Kaimin Mao,
Liangce Rong Tags: FULL PAPER Source Type: research
Synthesis, characterization and catalytic performance of core ‐shell structure magnetic Fe3O4/P(GMA‐EGDMA)‐NH2/HPG‐COOH‐Pd catalyst
Fe3O4/P(GMA ‐EGDMA)‐NH2/HPG ‐COOH‐Pd microspheres are prepared with hyperbranched polymer layer, which can convent 4‐nitrophenol to 4‐aminophenol efficiently, and whose catalytic efficiency can still maintain up to 86% after eight cycles catalytic experiments. A strategy has been developed for the synthesis, characterization and catalysis of magnetic Fe3O4/P(GMA ‐EGDMA)‐NH2/HPG ‐COOH‐Pd core‐shell structure supported catalyst. The P(GMA‐EGDMA) polymer layer was coated on the surface of hollow magnetic Fe3O4 microspheres through the effect of KH570. The core ‐shell magnetic Fe3O4/P(GMA ‐EGDMA) mo...
Source: Applied Organometallic Chemistry - November 19, 2018 Category: Chemistry Authors: Mingliang Ma,
Yuying Yang,
Dili Liao,
Ping Lyu,
Jinwei Zhang,
Jianli Liang,
Lizhi Zhang Tags: FULL PAPER Source Type: research
Influence of imide functionalized organo ‐modified Mg‐Al layered double hydroxide on the thermal and mechanical properties of new aliphatic‐aromatic poly (amide‐imide)
Two new series nanocomposites were prepared from a new synthesized poly(amideimide) and two organo modified LDH. The effects of organic modifier structure on the thermal and mechanical properties of resulted poly(amide ‐imide)/Mg‐Al LDH nanocomposites were investigated. A new dicarboxylic acid modified Mg ‐Al LDH (DLDH) containing imide groups was prepared and its effects on the thermal and mechanical properties of the new synthesized aliphatic‐aromatic poly (amide‐imide) (PAI) were investigated via preparation of PAI/nanocomposite films by solution casting method. The results of X‐ray diffra ction (XRD), field...
Source: Applied Organometallic Chemistry - November 19, 2018 Category: Chemistry Authors: Mohsen Hajibeygi,
Saeid Shafiei ‐Navid,
Meisam Shabanian Tags: FULL PAPER Source Type: research
A cost ‐effective shortcut to prepare organoselenium catalysts via decarboxylative coupling of phenylacetic acid with elemental selenium
Decarboxylative coupling of phenylacetic acid with elemental selenium led to a cost ‐effective shortcut to prepare organoselenium catalyst. An interesting decarboxylative coupling reaction of phenylacetic acid with elemental selenium was discovered and employed for the preparation efficient organoselenium catalysts for Baeyer –Villiger reaction and oxidative deoximation reaction. Compared with the traditionally used Grignard reagent method, the decarboxylative coupling reaction with selenium powders provides a shortcut for the preparation of organoselenium catalysts free of carcinogenic organohalide starting materials,...
Source: Applied Organometallic Chemistry - November 19, 2018 Category: Chemistry Authors: Hongen Cao,
Mingxuan Liu,
Rongrong Qian,
Xu Zhang,
Lei Yu Tags: FULL PAPER Source Type: research
Synergistic Activities in the Ullmann Coupling of Chloroarenes at Ambient Temperature by Pd ‐Supported Calcined Ferrocenated La2O3
Ullmann coupling of chloroarenes catalyzed by Pd ‐supported calcined ferrocenated La2O3 at ambient conditions.
Two main active sites that drive the reaction in a synergistic fashion.
A coupling of acetyl and aryl moieties as a by ‐product. Novel palladium ‐doped nanoparticles have been explored to serve as the first metal oxide‐derived heterogeneous catalyst for Ullmann reaction of chloroarenes under mild condition (34 °C). This heterogeneous catalyst exhibited high catalytic activity towards the Ullmann homocoupling of chloroarenes into a seri es of useful symmetrically biaryl products with good to excellent yie...
Source: Applied Organometallic Chemistry - November 19, 2018 Category: Chemistry Authors: Peerapong Chumkaeo,
Thinnaphat Poonsawat,
Titiya Meechai,
Ekasith Somsook Tags: FULL PAPER Source Type: research
A new air ‐stable and reusable tetraphosphine ligand for rhodium‐catalyzed hydroformylation of terminal olefins at low temperature
A new air ‐stable tetraphosphine ligand‐based catalyst could lead to high conversion (>97.7%) and high aldehyde selectivity (>94.1%) at low temperature (40 –60°C). Moreover, the tetraphosphine ligand could chelate with Rh due to the multiple chelating modes even though one or two phosphorus atoms were oxidized, providing at least seven reuses of the catalyst in homogeneous hydroformylation. Tetraphosphine and bisphosphine ligands were synthesized, characterized and employed in Rh ‐catalyzed hydroformylation of 1‐octene and 1‐hexene. Conversion of over 97.7% and aldehyde yield of 94.1% were achieved at 60...
Source: Applied Organometallic Chemistry - November 19, 2018 Category: Chemistry Authors: Fanding Zhou,
Lin Zhang,
Qianhui Wu,
Fuya Guo,
Songbai Tang,
Bin Xu,
Maolin Yuan,
Haiyan Fu,
Ruixiang Li,
Xueli Zheng,
Hua Chen Tags: FULL PAPER Source Type: research
Carbon ‐iodide bond activation by cyclometalated Pt (II) complexes bearing tricyclohexylphosphine ligand: A comparative kinetic study and theoretical elucidation
The kinetico ‐mechanistic aspects of the oxidative addition reaction of MeI to a series of cycloplatinated (II) phosphine complexes were investigated. Cyclometalated Pt (II) complexes [PtMe(C^N)(L)], in which C^N = deprotonated 2,2′‐bipyridineN‐oxide (Obpy),1, deprotonated 2 ‐phenylpyridine (ppy),2, deprotonated benzo [h] quinolone (bzq),3, and L = tricyclohexylphosphine (PCy3) were prepared and fully characterized. By treatment of1 –3 with excess MeI, the thermodynamically favored Pt (IV) complexescis‐[PtMe2I(C^N)(PCy3)] (C^N = Obpy,1a; ppy,2a; and bzq,3a) were obtained as the major products in whic...
Source: Applied Organometallic Chemistry - November 19, 2018 Category: Chemistry Authors: Samira Chamyani,
Hamid R. Shahsavari,
Sedigheh Abedanzadeh,
Mohsen Golbon Haghighi,
Sepideh Shabani,
Behrouz Notash Tags: FULL PAPER Source Type: research
Bioactive mono/bis (carboxyamide) based Co (II), Ni (II) and Cu (II) complexes: Synthesis, Characterization, DNA binding and Anticancer Potentials
Copper complex with slightly distorted square planar geometry, potent cytotoxicity in AGS human gastric cancer cells andin vivo administration of complex1 remarkably inhibits the tumor growth in male Swiss albino mice, moreover it did not show any hepatotoxicity in mice. Bioactive carboxyamide ligated CuII (1), CoII (2) and NiII (3) complexes have been synthesized and characterized using various physico ‐chemical techniques. In particular, the occurred slightly distorted square planar geometry in complex1 was confirmed by single X ‐ray crystal structure. Their (1,2 and3) potential interactions with herring sperm DNA (H...
Source: Applied Organometallic Chemistry - November 19, 2018 Category: Chemistry Authors: Raman Dhivya,
Sellamuthu Kathiresan,
Murugesan Vigneshwar,
Jothi Ranjani,
Jeyaprakash Rajendhran,
Nattamai S.P. Bhuvanesh,
Jamespandi Annaraj Tags: FULL PAPER Source Type: research
Threonine stabilizer ‐controlled well‐dispersed small palladium nanoparticles on modified magnetic nanocatalyst for Heck cross‐coupling process in water
We report the synthesis of magnetically separable Fe3O4@Silica ‐Threonine‐Pd0 magnetic nanoparticles with a core –shell structure. After synthesis of Fe3O4@Silica, threonine as an efficient stabilizer/ligand was bonded to the surface of Fe3O4@Silica. Then, palladium nanoparticles were generated on the threonine ‐modified catalyst. The threonine stabilizer helps to generate palladium nanoparticles of small size (less than 4 nm) with high dispersity and uniformity. Magnetically separable Fe3O4@Silica ‐Threonine‐Pd0 nanocatalyst was fully characterized using various techniques. This nanocatalyst efficiently catal...
Source: Applied Organometallic Chemistry - November 19, 2018 Category: Chemistry Authors: Iraj Sarvi,
Mostafa Gholizadeh,
Mohammad Izadyar Tags: SPECIAL ISSUE Source Type: research
Isophorone ‐boronate ester: A simple chemosensor for optical detection of fluoride anion
ESP surfaces of molecules (1) and (1.F ‐) with Mulliken atomic charges at dicyano quaternary carbon and boron in the conjugate(1). A highly selective isophorone ‐boronate ester based chemosensor, (1), having a dicyanovinyl moiety as a convenient colorimetric probe, has been designed. Different types of anionic analyte such as CH3COO−, ClO4−, Cl−, F−, PF6−, Br− and HSO4− were tested and among them only highly nucleophilic F− anion displayed significant response towards the sensor. Addition of the fluoride anion across the boron atom disrupts the π‐conjugation thereby shifts the absorption wavelength t...
Source: Applied Organometallic Chemistry - November 19, 2018 Category: Chemistry Authors: Jakku Ranjith Kumar,
Eda Rami Reddy,
Rajiv Trivedi,
Anil Kumar Vardhaman,
Lingamallu Giribabu,
Nedaossadat Mirzadeh,
Suresh K. Bhargava Tags: FULL PAPER Source Type: research
Synthesis and Structures of Arene Ruthenium (II) –NHC Complexes: Efficient Catalytic α‐alkylation of ketones via Hydrogen Auto Transfer Reaction
The new arene Ru (II) ‐NHC complexes were synthesised and characterized. They were effectively employed as borrowing hydrogen catalysts for the construction of new C‐C and C‐N bonds from the coupling reaction of ketones and primary alcohols to desired α‐alkylated ketones and quinoline products with good to excel lent yield of 84–96%. A panel of six new arene Ru (II) ‐NHC complexes2a ‐f, (NHC = 1,3‐diethyl‐(5,6‐dimethyl)benzimidazolin‐2‐ylidene1a, 1,3 ‐dicyclohexylmethyl‐(5,6‐dimethyl)benzimidazolin‐2‐ylidene1b and 1,3 ‐dibenzyl‐(5,6‐dimethyl)benzimidazolin‐2‐ylidene1c) were s...
Source: Applied Organometallic Chemistry - November 19, 2018 Category: Chemistry Authors: Gunasekaran Balamurugan,
Sundarraman Balaji,
Rengan Ramesh,
Nattamai S.P. Bhuvanesh Tags: FULL PAPER Source Type: research
Synthesis of Gossypium hirsutum ‐derived silver nanoparticles and their antibacterial efficacy against plant pathogens
A stem extract ofGossypium hirsutum was efficiently used for the synthesis of silver nanoparticles (AgNPs). The AgNPs showed antimicrobial activity against plant pathogens. Malvaceae and Brassicaceae family crops are economically important; however, their production has been markedly decreased in recent years due to various plant pests. Hence, the search for novel classes of efficient biological approaches continues due to unavailability of precise pesticides. The present study was designed to synthesize, characterize and evaluate the efficacy of silver nanoparticles (AgNPs) obtained using stem extract ofGossypium hirsutum...
Source: Applied Organometallic Chemistry - November 19, 2018 Category: Chemistry Authors: Gulamnabi L. Vanti,
Vijendra B. Nargund,
Basavesha K. N,
Rajinikanth Vanarchi,
Mahantesh Kurjogi,
Sikandar I. Mulla,
Suresh Tubaki,
Rajashekar R. Patil Tags: FULL PAPER Source Type: research
Ordered mesoporous SBA ‐15 functionalized with yttrium(III) and cerium(III) complexes: Towards active heterogeneous catalysts for oxidation of sulfides and preparation of 5‐substituted 1H‐tetrazoles
Two novel and eco ‐friendly SBA‐15@Creatinine@M (M = Y and Ce) catalysts were prepared and characterized.
These mesostructured and reusable catalysts can be used efficiently for the synthesis of 5‐substituted 1H‐tetrazoles and for the oxidation of sulfides into sulfoxides.
The products were obtained in high to excellent yields in a short reaction time. Mesoporous SBA ‐15 was synthesized and modified with 3‐chloropropyltrimethoxysilane and then used in immobilization of creatinine groups, which were employed to introduce Y3+ and Ce3+ to give rise to two novel yttrium and cerium catalysts: SBA ‐15@Creatinine@...
Source: Applied Organometallic Chemistry - November 19, 2018 Category: Chemistry Authors: Somayeh Molaei,
Taiebeh Tamoradi,
Mohammad Ghadermazi,
Arash Ghorbani ‐Choghamarani Tags: FULL PAPER Source Type: research
