Analysis of Network Structure of UV-Cured Acrylates by1H NMR Relaxation,13C NMR Spectroscopy, and Dynamic Mechanical Experiments

2001 ◽  
Vol 34 (12) ◽  
pp. 4051-4060 ◽  
Author(s):  
V. M. Litvinov ◽  
A. A. Dias
Keyword(s):  
Nmr Spectroscopy ◽  
Network Structure ◽  
13C Nmr ◽  
Nmr Relaxation ◽  
13C Nmr Spectroscopy ◽  
Dynamic Mechanical

13C NMR Characterization of Polychloroprene Microstructure I. Spectral Assignments

1977 ◽  
Vol 50 (1) ◽  
pp. 49-62 ◽  
Author(s):  
M. M. Coleman ◽  
D. L. Tabb ◽  
E. G. Brame
Keyword(s):  
Nmr Spectroscopy ◽  
13C Nmr ◽  
Quantitative Data ◽  
Nmr Relaxation ◽  
13C Nmr Spectroscopy ◽  
Nmr Characterization ◽  
Relaxation Studies ◽  
Structural Irregularities ◽  
Near Future

Abstract 13C NMR spectroscopy has proved to be a very powerful tool for the characterization of polychloroprene microstructure. We have identified and assigned the lines associated with diad and triad sequences involving the predominant trans-1,4 placement, together with other lines associated with cis-1,4, 1,2, isomerized 1,2, and 3,4 structural irregularities. Currently, we are performing 13C NMR, relaxation studies on the chloroprene polymers and will be presenting quantitative data in the near future.

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.

13C NMR spectroscopy of cucurbitacins

Tetrahedron ◽  
1983 ◽  
Vol 39 (2) ◽  
pp. 317-321 ◽  
Author(s):  
Vincent Vande Velde ◽  
David Lavie
Keyword(s):  
Nmr Spectroscopy ◽  
13C Nmr ◽  
13C Nmr Spectroscopy
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