Dynamic NMR study of dinitrophenyl derivatives of seven-membered cyclic ketals of pyridoxine

2015 ◽  
Vol 53 (10) ◽  
pp. 805-812 ◽  
Author(s):  
Ilfat Z. Rakhmatullin ◽  
Leisan F. Galiullina ◽  
Marsel' R. Garipov ◽  
Alexey D. Strel'nik ◽  
Yurii G. Shtyrlin ◽  
...  
Keyword(s):  
Dynamic Nmr ◽  
Nmr Study ◽  
Derivatives Of

Dynamic NMR study of cyclic derivatives of pyridoxine

2014 ◽  
Vol 52 (12) ◽  
pp. 769-778 ◽  
Author(s):  
I.Z. Rakhmatullin ◽  
L.F. Galiullina ◽  
M.R. Garipov ◽  
A.D. Strel'nik ◽  
Y.G. Shtyrlin ◽  
...  
Keyword(s):  
Dynamic Nmr ◽  
Nmr Study ◽  
Derivatives Of

Novel tetracyclic imidazole derivatives: Synthesis, dynamic NMR study, and anti-inflammatory evaluation

2010 ◽  
pp. n/a-n/a
Author(s):  
Renata Rupčić ◽  
Marina Modrić ◽  
Antun Hutinec ◽  
Ana Čikoš ◽  
Barbara Stanić ◽  
...  
Keyword(s):  
Dynamic Nmr ◽  
Imidazole Derivatives ◽  
Nmr Study ◽  
Anti Inflammatory

Gas-Phase Dynamic NMR Study of the Internal Rotation inN-Trifluoroacetylpyrrolidine

2003 ◽  
Vol 107 (17) ◽  
pp. 3024-3029 ◽  
Author(s):  
Cristina Suarez ◽  
Elisabeth J. Nicholas ◽  
Molly R. Bowman
Keyword(s):  
Gas Phase ◽  
Internal Rotation ◽  
Dynamic Nmr ◽  
Phase Dynamic ◽  
Nmr Study

scholarly journals Thermodynamically stable [4 + 2] cycloadducts of lanthanum-encapsulated endohedral metallofullerenes

2014 ◽  
Vol 10 ◽  
pp. 714-721 ◽  
Author(s):  
Yuta Takano ◽  
Yuki Nagashima ◽  
M Ángeles Herranz ◽  
Nazario Martín ◽  
Takeshi Akasaka
Keyword(s):  
Thermal Stability ◽  
Material Science ◽  
Molecular Structures ◽  
Spectroscopic Methods ◽  
Dynamic Nmr ◽  
The Novel ◽  
Endohedral Metallofullerenes ◽  
Derivatives Of ◽  
Paramagnetic Properties

The [4 + 2] cycloaddition of o-quinodimethanes, generated in situ from the sultine 4,5-benzo-3,6-dihydro-1,2-oxathiin 2-oxide and its derivative, to La metal-encapsulated fullerenes, La2@C80 or La@C82, afforded the novel derivatives of endohedral metallofullerenes (3a,b, 4a,b and 5b). Molecular structures of the resulting compounds were elucidated using spectroscopic methods such as MALDI–TOF mass, optical absorption, and NMR spectroscopy. The [4 + 2] adducts of La2@C80 (3a,b, and 4a,b) and La@C82 (5b), respectively, retain diamagnetic and paramagnetic properties, as confirmed by EPR spectroscopy. Dynamic NMR measurements of 4a at various temperatures demonstrated the boat-to-boat inversions of the addend. In addition, 5b revealed remarkable thermal stability in comparison with the reported [4 + 2] cycloadduct of pentamethylcyclopentadiene and La@C82 (6). These findings demonstrate the utility of sultines to afford thermodynamically stable endohedral metallofullerene derivatives for the use in material science.

ChemInform Abstract: Dynamic NMR Study of the Electronic State of Heteroaromatics. Part 8. The Influence of the Exo- and Endocyclic Heteroatoms.

ChemInform ◽  
2010 ◽  
Vol 22 (38) ◽  
pp. no-no
Author(s):  
E. KLEINPETER ◽  
R. SPITZNER ◽  
W. SCHROTH ◽  
K. PIHLAJA
Keyword(s):  
Electronic State ◽  
Dynamic Nmr ◽  
Nmr Study
Sign in / Sign up

Export Citation Format

Share Document