ChemInform Abstract: CONFORMATIONAL STUDIES OF 2-METHYL-3-PHENYLPROPIONIC ACID, 2-PHENYLBUTYRIC ACID AND THEIR METHYL ESTERS BY NMR SPECTROSCOPY

1979 ◽  
Vol 10 (36) ◽  
Author(s):  
S. L. SPASSOV ◽  
R. STEFANOVA
Keyword(s):  
Nmr Spectroscopy ◽  
Methyl Esters ◽  
Phenylpropionic Acid ◽  
Conformational Studies ◽  
Phenylbutyric Acid

scholarly journals Synthesis of monoketo and monohydroxy eicosanoic acids and esters with substituents at odd-numbered (3-13) carbons

2002 ◽  
Vol 67 (7) ◽  
pp. 473-480 ◽  
Author(s):  
Hulya Çelik
Keyword(s):  
Nmr Spectroscopy ◽  
High Purity ◽  
1H Nmr Spectroscopy ◽  
Methyl Esters ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Keto Acids ◽  
Physical And Chemical ◽  
Derivatives Of ◽  
And Chemical Properties

In this study, monoketo and monohydroxy eicosanoic acids and their methyl esters with the position of the substituent on odd numbered carbon atoms from 3 to 13 were synthesized with high purity. Furthermore, the semicarbazone and anilide derivatives of the obtained keto acids were prepared. They were characterized by TLC, IR and 1H-NMR spectroscopy and their physical and chemical properties were established.

Conformational Studies by Low Temperature13C-NMR Spectroscopy

1971 ◽  
Vol 10 (10) ◽  
pp. 730-731 ◽  
Author(s):  
Hans-J�rg Schneider ◽  
Roger Price ◽  
Toni Keller
Keyword(s):  
Nmr Spectroscopy ◽  
Conformational Studies

Conformational studies of RGDechi peptide by natural‐abundance NMR spectroscopy

2019 ◽  
Vol 25 (5) ◽  
pp. e3166 ◽  
Author(s):  
Biancamaria Farina ◽  
Annarita Del Gatto ◽  
Daniela Comegna ◽  
Sonia Di Gaetano ◽  
Domenica Capasso ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Natural Abundance ◽  
Conformational Studies

Determination of the content of fatty acid methyl esters (FAME) in biodiesel samples obtained by esterification using 1 H-NMR spectroscopy

2008 ◽  
Vol 46 (11) ◽  
pp. 1051-1054 ◽  
Author(s):  
Vinicius M. Mello ◽  
Flavia C. C. Oliveira ◽  
William G. Fraga ◽  
Claudia J. do Nascimento ◽  
Paulo A. Z. Suarez
Keyword(s):  
Fatty Acid ◽  
Nmr Spectroscopy ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
H Nmr ◽  
Acid Methyl

scholarly journals Conformational studies on substituted ε-caprolactams by X-ray crystallography and NMR spectroscopy

2014 ◽  
Vol 38 (12) ◽  
pp. 5905-5917 ◽  
Author(s):  
Tobias Gruber ◽  
Amber L. Thompson ◽  
Barbara Odell ◽  
Petra Bombicz ◽  
Christopher J. Schofield
Keyword(s):  
Nmr Spectroscopy ◽  
Conformational Studies ◽  
X Ray ◽  
X Ray Crystallography

scholarly journals Conformational Studies of Poly(9,9-dialkylfluorene)s in Solution Using NMR Spectroscopy and Density Functional Theory Calculations

2009 ◽  
Vol 113 (35) ◽  
pp. 11808-11821 ◽  
Author(s):  
Licínia L. G. Justino ◽  
M. Luísa Ramos ◽  
Paulo E. Abreu ◽  
Rui A. Carvalho ◽  
Abilio J. F. N. Sobral ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Nmr Spectroscopy ◽  
Density Functional ◽  
Density Functional Theory Calculations ◽  
Functional Theory ◽  
Conformational Studies

scholarly journals Chiral carboxylic acids and their effects on melting-point behaviour in co-crystals with isonicotinamide

2008 ◽  
Vol 64 (6) ◽  
pp. 780-790 ◽  
Author(s):  
Andreas Lemmerer ◽  
Nikoletta B. Báthori ◽  
Susan A. Bourne
Keyword(s):  
Melting Point ◽  
Crystal Structures ◽  
Carboxylic Acids ◽  
Optically Active ◽  
Phenylpropionic Acid ◽  
Space Groups ◽  
Two Systems ◽  
Packing Arrangement ◽  
Phenylbutyric Acid

The crystal structures of co-crystals of two systems of chiral carboxylic acids, optically active and racemic 2-phenylpropionic acid and 2-phenylbutyric acid, with isonicotinamide are reported to investigate the effects of the chirality of the chiral carboxylic acids on the melting point of the co-crystal complexes. It was found that the racemic co-crystal has a higher melting point than the optically active co-crystal, which correlates with the denser packing arrangement inherent in centrosymmetric space groups.

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