Insect pheromone components. Use of carbon-13 NMR spectroscopy for assigning the configuration of carbon-carbon double bonds of monoenic or dienic pheromone components and for quantitative determination of Z/E mixtures was written by Rossi, Renzo;Carpita, Adriano;Quirici, Maria G.;Veracini, Carlo Alberto. And the article was included in Tetrahedron in 1982.SDS of cas: 50767-78-7 The following contents are mentioned in the article:
The configuration of mono- and dienic insect pheromones was determined from chem.-shift differences of the allylic C atoms between unsaturated and the corresponding saturated pheromones. The method avoids use of the nuclear Overhauser effect and allows quant. determination of the stereoisomeric composition of mixtures of synthetic mono- and dienic pheromone components. This study involved multiple reactions and reactants, such as (E)-Dodeca-9,11-dien-1-yl acetate (cas: 50767-78-7SDS of cas: 50767-78-7).
(E)-Dodeca-9,11-dien-1-yl acetate (cas: 50767-78-7) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. 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.SDS of cas: 50767-78-7
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics