scholarly journals Synthesis of a New [3-(4-Chlorophenyl)-4-oxo-1,3-thiazolidin-5-ylidene]acetic Acid Derivative

Molbank ◽  
10.3390/m1150 ◽  
2020 ◽  
Vol 2020 (3) ◽  
pp. M1150
Author(s):  
Jacek Szczepański ◽  
Helena Tuszewska ◽  
Nazar Trotsko
Keyword(s):  
Acetic Acid ◽  
Nmr Spectroscopy ◽  
Acid Derivative ◽  
13C Nmr ◽  
Michael Reaction ◽  
13C Nmr Spectroscopy ◽  
Dimethyl Acetylenedicarboxylate ◽  
1H And 13C Nmr ◽  
New Compounds

The new methyl [3-(4-chlorophenyl)-2-{[(2,4-dichloro-1,3-thiazol-5-yl)methylidene]hydrazinylidene}-4-oxo-1,3-thiazolidin-5-ylidene]acetate was synthesized from 4-(4-chlorophenyl)-1-(2,4-dichloro-1,3-thiazol-5-yl)methylidene-3-thiosemicarbazide using dimethyl acetylenedicarboxylate as thia-Michael reaction acceptor. New compounds (3 and 4) were characterized by IR, 1H and 13C NMR spectroscopy methods.

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.

ChemInform Abstract: Chemistry of Chromotropic Acid. 1H and 13C NMR Spectroscopy of Chromotropic Acid and Its Derivatives.

ChemInform ◽  
2010 ◽  
Vol 22 (49) ◽  
pp. no-no
Author(s):  
P. E. GEORGHIOU ◽  
C. K. HO ◽  
C. R. JABLONSKI
Keyword(s):  
Nmr Spectroscopy ◽  
13C Nmr ◽  
13C Nmr Spectroscopy ◽  
Chromotropic Acid ◽  
1H And 13C Nmr

ChemInform Abstract: Iminophosphorane-Substituted Proton Sponges. Part 4. Comparison of X- Ray Molecular Structures with Solution Properties (pKa, 1H and 13C NMR Spectroscopy).

ChemInform ◽  
2010 ◽  
Vol 24 (30) ◽  
pp. no-no
Author(s):  
J. LAYNEZ ◽  
M. MENENDEZ ◽  
J. L. SAIZ VELASCO ◽  
A. L. LLAMAS-SAIZ ◽  
C. FOCES-FOCES ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
13C Nmr ◽  
13C Nmr Spectroscopy ◽  
Molecular Structures ◽  
Solution Properties ◽  
1H And 13C Nmr ◽  
X Ray ◽  
Proton Sponges

scholarly journals NEW PHARMACOLOGICALLY ACTIVE COMPOUNDS BASED ON 5-HYDROXY-7-METHOXY-2-PHENYLCHROMAN-4-ONE

2021 ◽  
Vol 3 ◽  
pp. 119-127
Author(s):  
G.M. Baisarov ◽  
◽  
S.M. Adekenov ◽  
Keyword(s):  
Nmr Spectroscopy ◽  
13C Nmr ◽  
Potassium Carbonate ◽  
13C Nmr Spectroscopy ◽  
1H And 13C Nmr ◽  
Pharmacologically Active ◽  
Pharmacologically Active Compounds ◽  
First Time

The reaction of 5-hydroxy-7-methoxy-2-phenylchroman-4-one with dibromoalkanes in acetone in the presence of potassium carbonate proceeds according to the Michael’s retro-reaction O-alkylation and leads to the formation of the corresponding 2-(bromo-alkoxy) chalcones. The structure of the synthesized compounds was confirmed by IR-, 1H- and 13C-NMR spectroscopy. The cytotoxic, hepatoprotective and anti-inflammatory effects of chalcone derivatives (2-3) were studied for the first time in vitro and in vivo.

Slow dynamics of aluminium-citrate complexes studied by 1H- and 13C-NMR spectroscopy

2002 ◽  
Vol 228 (2) ◽  
pp. 163-173 ◽  
Author(s):  
A. Bodor ◽  
I. Bányai ◽  
L. Zékány ◽  
I. Tóth
Keyword(s):  
Nmr Spectroscopy ◽  
13C Nmr ◽  
13C Nmr Spectroscopy ◽  
Slow Dynamics ◽  
1H And 13C Nmr ◽  
Aluminium Citrate

A structural study of silicon-based interpenetrating polymer networks by solid state 1H and 13C NMR spectroscopy

2002 ◽  
Vol 602-603 ◽  
pp. 321-333 ◽  
Author(s):  
Masatoshi Kobayashi ◽  
Shigeki Kuroki ◽  
Isao Ando ◽  
Kazuo Yamauchi ◽  
Hideaki Kimura ◽  
...  
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Structural Study ◽  
13C Nmr ◽  
Polymer Networks ◽  
13C Nmr Spectroscopy ◽  
Interpenetrating Polymer Networks ◽  
1H And 13C Nmr ◽  
Silicon Based
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