scholarly journals Green synthesis approach and theoretical studies for Cr(III), Mn(II), Fe(III), Co(II) and Ni(II) complexes with NNS donor Schiff base ligand

2019 ◽  
Vol 9 (6) ◽  
pp. 4567-4574 ◽  
Keyword(s):  
Spectral Studies ◽  
Environmental Harm ◽  
Magnetic Studies ◽  
One Pot ◽  
Synthesis Conditions ◽  
13C Nuclear Magnetic Resonance ◽  
Effective Synthesis ◽  
Diffraction Patterns ◽  
Magnetic Resonance Scanning ◽  
Xrd Techniques

The green synthetic processes have synthetized five Cr(III), Mn(II), Fe(III), Co(III) and Ni(II) complexes. In the current study, their synthesis by ball mining is decorated in a simple one-pot synthesis, cost efficiency, easy to measure for commercial manufacture, effective synthesis conditions such as moderate temperature and shorter length, thus preventing further by-products which could cause environmental harm, and being environmentally friendly as it is. All five complexes are well-defined, polyncrystalline materials as their Powder X-ray diffraction patterns indicate. The characterization of these complexes had been Fourier Transform Infrared Spectroscopy(FT-IR), 1H-13C Nuclear magnetic resonance, Scanning Electron Microscopy (SEM), electronic absorption spectral studies as well as magnetic studies and Powder XRD techniques.

Preparation and properties of green rust type substances

1987 ◽  
Vol 52 (1) ◽  
pp. 93-102 ◽  
Author(s):  
Jaroslav Vinš ◽  
Jan Šubrt ◽  
Vladimír Zapletal ◽  
František Hanousek
Keyword(s):  
Chemical Composition ◽  
Electron Diffraction ◽  
Green Rust ◽  
X Ray ◽  
Synthesis Conditions ◽  
Diffraction Patterns

A method has been worked out for the reproducible preparation of Green Rust substances involving SO42-, Cl-, Br-, and I- anions. The chemical composition of the substances prepared has been followed in dependence on the synthesis conditions. The powder X-ray and electron diffraction patterns and infrared and Moessbauer spectra have been measured and discussed.

scholarly journals Algal magnetic nickel oxide nanocatalyst in accelerated synthesis of pyridopyrimidine derivatives

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Javad Moavi ◽  
Foad Buazar ◽  
Mohammad Hosein Sayahi
Keyword(s):  
Nickel Oxide ◽  
Spherical Shape ◽  
Marine Macroalgae ◽  
Bet Surface Area ◽  
Nickel Oxide Nanoparticles ◽  
One Pot ◽  
Efficient Catalyst ◽  
Coating Agent ◽  
Synthesis Conditions ◽  
Nio Nps

AbstractThis research presents a novel biological route for the biosynthesis of nickel oxide nanoparticles (NiO NPs) using marine macroalgae extract as a reducing and coating agent under optimized synthesis conditions. XRD and TEM analyses revealed that phytosynthesized NiO NPs are crystalline in nature with a spherical shape having a mean particle size of 32.64 nm. TGA results indicated the presence of marine-derived organic constituents on the surface of NiO NPs. It is found that biogenic NiO NPs with BET surface area of 45.59 m2g−1 is a highly efficient catalyst for benign one-pot preparation of pyridopyrimidine derivatives using aqueous reaction conditions. This environmentally friendly procedure takes considerable advantages of shorter reaction times, excellent product yields (up to 96%), magnetically viable nanocatalyst (7 runs), low catalyst loadings, and free toxic chemical reagents.

scholarly journals Facile Synthesis of COF-Supported Reduced Pd-Based Catalyst for One-Pot Reductive Amination of Aldehydes

Catalysts ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 287
Author(s):  
Jianguo Liu ◽  
Mingyue Zhang ◽  
Longlong Ma
Keyword(s):  
Heterogeneous Catalysts ◽  
Reductive Amination ◽  
Secondary Amines ◽  
Metallic State ◽  
One Pot ◽  
Effective Synthesis ◽  
Pharmaceutical Industries ◽  
The One ◽  
Heterocyclic Aldehydes ◽  
Supported Pd

Dibenzylamine motifs are an important class of crucial organic compounds and are widely used in fine chemical and pharmaceutical industries. The development of the efficient, economical, and environmentally friendly synthesis of amines using transition metal-based heterogeneous catalysts remains both desirable and challenging. Herein, we prepared the covalent organic framework (COF)-supported heterogeneous reduced COF-supported Pd-based catalyst and used it for the one-pot reductive amination of aldehydes. There are both Pd metallic state and oxidated Pdσ+ in the catalysts. Furthermore, in the presence of the reduced COF-supported Pd-based catalyst, many aromatic, aliphatic, and heterocyclic aldehydes with various functional groups substituted were converted to their corresponding amines products in good to excellent selectivity (up to 91%) under mild reaction conditions (70 °C, 2 h, NH3, 20 bar H2). This work expands the covalent organic frameworks for the material family and its support catalyst, opening up new catalytic applications in the economical, practical, and effective synthesis of secondary amines.

scholarly journals Synthesis, Characterization and in vitro Antimicrobial Screening of Some Novel Series of 2-Azetidinone Derivatives Integrated with Quinoline, Pyrazole and Benzofuran Moieties

2020 ◽  
Vol 32 (4) ◽  
pp. 896-900
Author(s):  
M. Idrees ◽  
Y.G. Bodkhe ◽  
N.J. Siddiqui ◽  
S.S. Kola
Keyword(s):  
Mass Spectra ◽  
Pathogenic Bacteria ◽  
Catalytic Amount ◽  
Spectral Studies ◽  
One Pot ◽  
E Coli ◽  
One Pot Condensation ◽  
Cyclocondensation Reaction ◽  
In Vitro Antibacterial Activity

A series of 5-(benzofuran-2-yl)-N-(3-chloro-4-(2-(p-tolyloxy) substituted quinolin-3-yl)-2-oxoazetidin-1-yl)-1-phenyl-1H-pyrazole-3-carboxamide derivatives (4a-f) were synthesized with excellent yields by cyclocondensation reaction of 5-(benzofuran-2-yl)-N′-(2-(p-tolyloxy) substituted quinolin-3-yl)methylene)-1-phenyl-1H-pyrazole-3-carbohydrazide (3a-f) with chloroacetyl chloride in presence of triethylamine in DMF. One pot condensation of 5-(benzofuran-2-yl)-1-phenyl-1H-pyrazole-3-carbohydrazide (1) with 2-(p-tolyloxy) substituted quinoline-3-carbaldehyde (2a-f) in ethanol solvent in presence of catalytic amount of acetic acid gave intermediate compounds (3a-f). The structures of newly synthesized compounds have been substantiated through elemental analysis and spectral studies viz. 1H NMR, 13C NMR, IR and mass spectra. All the synthesized compounds were screened for their in vitro antibacterial activity against pathogenic bacteria such as S. aureus and E. coli at different concentrations.

scholarly journals Controlled Synthesis, Characterization and Magnetic Properties of Unsymmetrical Heterodinuclear CuIIMII (M = Co, Mn and Cd) Complexes in Alkoxo Bridged Acyclic Ligand Environment

2020 ◽  
Vol 32 (9) ◽  
pp. 2284-2292
Author(s):  
DIPESH GHOSH
Keyword(s):  
Ground State ◽  
Spectral Studies ◽  
Controlled Synthesis ◽  
Site Specificity ◽  
Magnetic Studies ◽  
X Ray ◽  
X Ray Crystallography ◽  
Synthetic Procedure ◽  
Binucleating Ligands ◽  
Spin Ground State

This work reports the syntheses of heterodinuclear Cu(II)-Co(II), Cu(II)-Mn(II) and Cu(II)-Cd(II) complexes following a convenient single-pot synthetic procedure using the two asymmetric binucleating ligands. Site-specificity offered by one of the ligands' arms towards Cu(I) center has been successfully exploited here, avoiding all sorts of impending scrambling reactions. X-ray crystallography and ESImass spectral studies have been used to prove the exclusivity of these products. Magnetic studies at variable temperatures (4-300 K) have been proved inadequate to assign any spin-ground state for Cu(II)-Co(II) and Cu(II)-Mn(II) compounds.

Influence of molecular structure on the rheological properties and foamability of long chain branched polypropylene by “one-pot” reactive extrusion

2020 ◽  
pp. 0021955X2094310
Author(s):  
Yan Li ◽  
Zhen Yao ◽  
Shaolong Qiu ◽  
Changchun Zeng ◽  
Kun Cao
Keyword(s):  
Coupling Reaction ◽  
Reactive Extrusion ◽  
Expansion Ratio ◽  
Size Exclusion ◽  
One Pot ◽  
Synthesis Conditions ◽  
Twin Screw ◽  
Exclusion Chromatography ◽  
In Series ◽  
Long Chain

In this work, reactive twin screw extrusion was conducted to synthesize long chain branched polypropylenes (LCB-PPs) in a “one-pot” process in which dicumyl peroxide (DCP) initiated maleic anhydride (MAH) grafting onto the linear PP, and the concomitant coupling reaction between ethylene diamine (EDA) and MAH grafted polypropylene (PP-g-MAH) proceeded in series. Fourier transfer infrared spectroscopy (FTIR) on the prepared materials confirmed the occurrence of both reactions. A series of LCB-PPs were prepared using different amounts of EDA, MAH and DCP to study their effects and determine the optimal synthesis conditions. The prepared materials were characterized by size exclusion chromatography (SEC) and rheological analysis to ascertain the polymer microstructure. The foamability of the LCB-PPs by supercritical carbon dioxide (scCO2) foaming and foam morphology were investigated. The LCB-PPs were found to have vastly improved foamability and cellular morphology. Under optimal conditions, a foam expansion ratio of over 20 was achieved.

scholarly journals 13C nuclear magnetic resonance spectral studies on gleditsia saponin C (GS-C).

1982 ◽  
Vol 30 (8) ◽  
pp. 3010-3012 ◽  
Author(s):  
TAKAO KONOSHIMA ◽  
KAZUYO SHIMIZU ◽  
NAOKO MUNE ◽  
TOKUNOSUKE SAWADA ◽  
YOSHIHITO OKADA ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Spectral Studies ◽  
13C Nuclear Magnetic Resonance ◽  
Nuclear Magnetic
Sign in / Sign up

Export Citation Format

Share Document