scholarly journals 4-Amino-2-(p-tolyl)-7H-chromeno[5,6-d]oxazol-7-one

Molbank ◽  
10.3390/m1237 ◽  
2021 ◽  
Vol 2021 (2) ◽  
pp. M1237
Author(s):  
Evangelia-Eirini N. Vlachou ◽  
Thomas D. Balalas ◽  
Dimitra J. Hadjipavlou-Litina ◽  
Konstantinos E. Litinas
Keyword(s):  
Lipid Peroxidation ◽  
13C Nmr ◽  
Nmr Analysis ◽  
One Pot ◽  
Cerium Ammonium Nitrate ◽  
13C Nmr Analysis ◽  
Cerium Ammonium ◽  
Biological Tests ◽  
Ft Ir ◽  
The One

The new 4-amino-2-(p-tolyl)-7H-chromeno[5,6-d]oxazol-7-one was successfully prepared through the Au/TiO2-catalyzed NaBH4 activation and chemoselective reduction of the new 4-nitro-2-(p-tolyl)-7H-chromeno[5,6-d]oxazol-7-one. The latter was synthesized by the one-pot tandem reactions of 6-hydroxy-5,7-dinitrocoumarin with p-tolylmethanol under Au/TiO2 catalysis. The dinitrocoumarin was obtained by the nitration of 6-hydroxycoumarin with cerium ammonium nitrate (CAN). The structure of the synthesized compounds was confirmed by FT-IR, HR-MS, 1H-NMR and 13C-NMR analysis. Preliminary biological tests show low anti-lipid peroxidation activity for the title compound.

scholarly journals (2S,3R,6R)-2-[(R)-1-Hydroxyallyl]-4,4-dimethoxy-6-methyltetrahydro-2H-pyran-3-ol

Molbank ◽  
10.3390/m1140 ◽  
2020 ◽  
Vol 2020 (2) ◽  
pp. M1140
Author(s):  
Jack Bennett ◽  
Paul Murphy
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
Ir Spectroscopy ◽  
13C Nmr ◽  
Conjugate Addition ◽  
13C Nmr Spectroscopy ◽  
One Pot ◽  
1H And 13C Nmr ◽  
Esi Mass Spectrometry ◽  
The One

(2S,3R,6R)-2-[(R)-1-Hydroxyallyl]-4,4-dimethoxy-6-methyltetrahydro-2H-pyran-3-ol was isolated in 18% after treating the glucose derived (5R,6S,7R)-5,6,7-tris[(triethylsilyl)oxy]nona-1,8-dien-4-one with (1S)-(+)-10-camphorsulfonic acid (CSA). The one-pot formation of the title compound involved triethylsilyl (TES) removal, alkene isomerization, intramolecular conjugate addition and ketal formation. The compound was characterized by 1H and 13C NMR spectroscopy, ESI mass spectrometry and IR spectroscopy. NMR spectroscopy was used to establish the product structure, including the conformation of its tetrahydropyran ring.

scholarly journals Clean one-pot multicomponent synthesis of pyrans using a green and magnetically recyclable heterogeneous nanocatalyst

SynOpen ◽  
2021 ◽  
Author(s):  
Mina Ghassemi ◽  
Ali Maleki
Keyword(s):  
Room Temperature ◽  
Significant Loss ◽  
Copper Ferrite ◽  
Multicomponent Synthesis ◽  
Thermo Gravimetric ◽  
Sem Images ◽  
One Pot ◽  
Three Component Reaction ◽  
Ft Ir ◽  
The One

Copper ferrite (CuFe2O4) magnetic nanoparticles (MNPs) were synthesized via thermal decomposition method and applied as a reusable and green catalyst in the synthesis of functionalized 4H-pyran derivatives using malononitrile, an aromatic aldehyde and a β-ketoester in ethanol at room temperature. Then it was characterized by Fourier transform infrared spectroscopy (FT-IR), energy-dispersive X-ray spectroscopy (EDX) analysis, scanning electron microscopy (SEM) images, thermo gravimetric and differential thermo gravimetric (TGA/DTG) analysis. The catalyst was recovered from the reaction mixture by applying an external magnet and decanting the mixture. Recycled catalyst was reused for several times without significant loss in its activity. Running the one-pot three-component reaction at room temperature, no use of eternal energy source and using a green solvent provide benign, mild, and environmentally friendly reaction conditions; as well, ease of catalyst recovering, catalyst recyclability, no use of column chromatography and good to excellent yields are extra advantages of this work.

scholarly journals Dynamic 13C NMR analysis of oxidative metabolism in the in vivo canine myocardium.

1993 ◽  
Vol 268 (35) ◽  
pp. 26296-26301
Author(s):  
P M Robitaille ◽  
D P Rath ◽  
A M Abduljalil ◽  
J M O'Donnell ◽  
Z Jiang ◽  
...  
Keyword(s):  
13C Nmr ◽  
Oxidative Metabolism ◽  
Nmr Analysis ◽  
13C Nmr Analysis ◽  
Canine Myocardium

scholarly journals A New Supported Manganese-Based Coordination Complex as a Nano-Catalyst for the Synthesis of Indazolophthalazinetriones and Investigation of Its Antibacterial Activity

Chemistry ◽  
2021 ◽  
Vol 3 (3) ◽  
pp. 783-799
Author(s):  
Maryam Ariannezhad ◽  
Davood Habibi ◽  
Somayyeh Heydari ◽  
Vahideh Khorramabadi
Keyword(s):  
Antibacterial Activity ◽  
Simple Procedure ◽  
Condensation Reaction ◽  
Antibacterial Properties ◽  
Coordination Complex ◽  
Bacterial Strains ◽  
One Pot ◽  
Nano Catalyst ◽  
Ft Ir ◽  
The One

A new magnetic supported manganese-based coordination complex (Fe3O4@SiO2@CPTMS@MBOL@ Mn) was prepared in consecutive stages and characterized via various techniques (VSM, SEM, TEM, XRD, FT-IR, EDX, TG-DTA, and ICP). To evaluate its application, it was used for synthesis of divers Indazolophthalazinetriones in a simple procedure via the one-pot three-component condensation reaction of aldehydes, dimedone, and phthalhydrazide in ethanol under reflux conditions. The Mn catalyst can be recycled without any noticeable loss in catalytic activity. Additionally, the antibacterial properties of the nano-catalyst were studied against some bacterial strains.

ChemInform Abstract: Synthesis and 1H, 13C NMR Analysis of Some Substituted 1,2,3,4-Tetrahydroisoquinolines.

ChemInform ◽  
1989 ◽  
Vol 20 (52) ◽  
Author(s):  
A. F. IBANEZ ◽  
G. B. YACULIANO ◽  
G. Y. MOLTRASIO IGLESIAS
Keyword(s):  
13C Nmr ◽  
Nmr Analysis ◽  
13C Nmr Analysis

1,6- and 1,7-naphthyridinesIII.13C-NMR analysis of some hydroxy derivatives

2002 ◽  
Vol 39 (2) ◽  
pp. 341-346 ◽  
Author(s):  
M. Mercedes Blanco ◽  
Graciela Buldain ◽  
Celia B. Schapira ◽  
Isabel Perillo
Keyword(s):  
13C Nmr ◽  
Nmr Analysis ◽  
13C Nmr Analysis
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