Photochemistry of enolizable β-dicarbonyl compounds: study on the photoketonization of some esters of aroylacetic acids was written by Markov, P.;Petkov, I.;Eglova, D.. And the article was included in Journal of Photochemistry in 1978.HPLC of Formula: 33166-79-9 This article mentions the following:
Photolysis of RC6H4COCH2CO2Et (R = H, Me, MeO, NO2, Cl, Br) results in a shift of the keto-enol equilibrium toward the keto form. Rate constants and quantum yields were determined Electron-releasing substituents in the para position favor ketonization. In the experiment, the researchers used many compounds, for example, Ethyl 3-oxo-3-(m-tolyl)propanoate (cas: 33166-79-9HPLC of Formula: 33166-79-9).
Ethyl 3-oxo-3-(m-tolyl)propanoate (cas: 33166-79-9) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.HPLC of Formula: 33166-79-9
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics