Near-ultraviolet absorption spectra of some furan and benzofuran derivatives. Observations on relation with chemical properties was written by Andrisano, Renato. And the article was included in Ricerca sci. in 1960.Electric Literature of C10H8O3 This article mentions the following:
The relation between aromatic character and ultraviolet spectra of heterocyclic compounds is discussed. Comparison of the spectra of the hydrocarbons and their acetyl derivatives gave the order of aromaticity of benzene > thiophene > pyrrole > furan, selenophene ≥ thiophene, and α-furanyl > β-furanyl. The spectra of some derivatives of benzofuran (I) are recorded. 2-Methylbenzofuran has a spectrum very similar to that of I, but benzofuran-2-carboxylic acid and the Me ester are displaced to higher wave length, due to the increased conjugation. 2-, 4-, 5-, 6- and 7-Nitro substituents also increases the wave length, decreasing in that order. The shifts are similar in nitro-2,3-dimethylindoles. In the experiment, the researchers used many compounds, for example, Methyl benzofuran-2-carboxylate (cas: 1646-27-1Electric Literature of C10H8O3).
Methyl benzofuran-2-carboxylate (cas: 1646-27-1) belongs to benzofurans derivatives. Many natural or synthetic compounds containing benzofuran skeletons have been found to possess remarkable activity as agrochemicals and pharmaceuticals. Substituted benzofurans find applications such as fluorescent sensors, oxidants, in drug discovery, and in another field of chemistry and agriculture.Electric Literature of C10H8O3
Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem