Vanillin Alkanoates in the Synthesis of Hexahydrobenzacridine and Octahydroxanthene Derivatives was written by Kozlov, N. G.;Basalaeva, L. I.. And the article was included in Russian Journal of General Chemistry in 2005.COA of Formula: C12H14O4 This article mentions the following:
Cascade heterocyclization of 1,3-cyclohexanedione and dimedone with 2-naphthylamine and vanillin esters gave 2-methoxy-4-(alkyl-11-oxo-7,8,9,10,11,12-hexahydrobenz[a]acridin-12-yl)- and 2-methoxy-4-(alkyl-1,8-dioxo-2,3,4,5,6,7,8,9-octahydro-1H-xanthen-9-yl)phenyl esters of aliphatic (C1-C4) carboxylic acids. In the experiment, the researchers used many compounds, for example, 4-Formyl-2-methoxyphenyl isobutyrate (cas: 20665-85-4COA of Formula: C12H14O4).
4-Formyl-2-methoxyphenyl isobutyrate (cas: 20665-85-4) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. COA of Formula: C12H14O4
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics