Effect of temperature on the chemical shift of the 13C NMR of 灏?dicarbonyl compounds and their fluoroborate (BF2) chelates was written by Khatipov, S. A.;Shapet’ko, N. N.;Andreichikov, Yu. S.;Muldakhmetov, Z. M.. And the article was included in Zhurnal Fizicheskoi Khimii in 1985.SDS of cas: 39163-39-8 This article mentions the following:
The chem. shifts were studied of the 灏?C nucleus in I, II, and III. The effect was determined of BF2 replacement of the enolic H on the shifts. The degrees of asymmetry of the hydrocarbon residues are given. There is no activational process for the migration of enolic H atoms in I, II, III, and their BF2 chelates. In the experiment, the researchers used many compounds, for example, Ethyl 2-oxo-2-(2-oxocyclopentyl)acetate (cas: 39163-39-8SDS of cas: 39163-39-8).
Ethyl 2-oxo-2-(2-oxocyclopentyl)acetate (cas: 39163-39-8) 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. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.SDS of cas: 39163-39-8
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics