Vanillin and O-Ethyl Vanillin Esters in Reactions with 2-Naphthylamine and Cyclopentanone was written by Kozlov, N. G.;Dikusar, E. A.. And the article was included in Russian Journal of Organic Chemistry in 2019.Application of 20665-85-4 This article mentions the following:
The 4-(2,3-dihydro-1H-benzo[f]cyclopenta[c]quinolin-4-yl)-2-alkoxyphenyl esters of carboxylic acids I (R = CH3, C2H5, CH(CH3)2; R1 = CH3, C2H5) have been synthesized by the three-component condensation of esters 4-RC(O)O-3-R1OC6H3CHO derived from vanillin and O-Et vanillin with 2-naphthylamine and cyclopentanone in the presence of HCl as a catalyst. In the experiment, the researchers used many compounds, for example, 4-Formyl-2-methoxyphenyl isobutyrate (cas: 20665-85-4Application of 20665-85-4).
4-Formyl-2-methoxyphenyl isobutyrate (cas: 20665-85-4) 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. 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.Application of 20665-85-4
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics