Carbon-13 NMR analyses on conjugated dienic pheromones of Lepidoptera was written by Ando, Tetsu;Kusa, Koji;Uchiyama, Masaaki;Yoshida, Shigeo;Takahashi, Nobutaka. And the article was included in Agricultural and Biological Chemistry in 1983.Computed Properties of C14H24O2 The following contents are mentioned in the article:
The 13C NMR of all the geometrical isomers of 5,7- and 8,10-dodecadien-1-ols and 9,11-dodecadienyl acetate were assigned from the examination of 13C chem. shift differences of olefinic C atoms induced by diene and chain substitution and by the chem. shift changes of allylic and olefinic C atoms due to geometry conversion of the conjugated diene system. These correlations comprise a new method for assigning the 13C NMR of conjugated systems. The 1H NMR of the dienols and their derivatives were also discussed. This study involved multiple reactions and reactants, such as (E)-Dodeca-9,11-dien-1-yl acetate (cas: 50767-78-7Computed Properties of C14H24O2).
(E)-Dodeca-9,11-dien-1-yl acetate (cas: 50767-78-7) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Computed Properties of C14H24O2
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics