Scrocco, Marisa et al. published their research in Atti accad. nazl. Lincei Rend., Classe sci. fis., mat. e nat. in 1958 | CAS: 1646-27-1

Methyl benzofuran-2-carboxylate (cas: 1646-27-1) belongs to benzofurans derivatives. Benzofuran is a core structural unit found in many naturally occurring compounds with multidirectional biological activities. As benzofurans are prone to undergo ring opening of the heterocycle, examples of reduction of this type of aromatics by using dissolving metals are rather scarce.Quality Control of Methyl benzofuran-2-carboxylate

Conjugation phenomena in α- and β-substituted pyrroles studied by infrared and ultraviolet spectrophotometry was written by Scrocco, Marisa;Caglioti, Luciano;Caglioti, V.. And the article was included in Atti accad. nazl. Lincei Rend., Classe sci. fis., mat. e nat. in 1958.Quality Control of Methyl benzofuran-2-carboxylate This article mentions the following:

Effects of ring substituents on the NH stretching frequency v(NH) of pyrroles (I) are further investigated. 2-Me, 3-Me, 2,4-Me2, and 2,5-Me2 substitutions cause only a very slight increase in v(NH) of I, an effect opposite to hyperconjugation. The v(CO) of the 3-CO2Me compound previously given as 1700 cm.-1 was resolved into 2 peaks, 1712 (strong) and 1698; similarly the 2-CO2Me compound had maximum at 1715 and 1697 (strong), the lower ν presumably vibrations of internal chelates. The following data were similarly interpreted: (I substituents, strong v(NH), weak v(NH), strong v(CO), weak v(CO), ultraviolet maximum (log ε) and ultraviolet maximum (log ε) given): 3-CO2Me, 3490, 3320, 1712, 1698 cm.-1, 240 mμ (3.82), and – (-); 2-CO2Me, 3326, 3472, 1697, 1715 cm.-1, 261 (4.22) and 234.5 mμ (3.82); 2-CHO, 3284, 3468, 1650, 1666 cm.-1, 279 (4.27), and 246 mμ (3.73); 2-Ac, 3294, 3466, 1640, 1662 cm.-1, 276.5 (4.21) and 247 mμ (3.61); 2-COCH2Cl, -, -, 1639, 1663 cm.-1, 288.5 (4.3) and 246 mμ (3.6); 2-CO2Me, 4-NO2, -, -, -, -, 229 (4.26) and 285 mμ (3.75); 2-Ac, 5-CN, -, -, -, -, 248 (3.85) and 265 mμ (3.80). In the experiment, the researchers used many compounds, for example, Methyl benzofuran-2-carboxylate (cas: 1646-27-1Quality Control of Methyl benzofuran-2-carboxylate).

Methyl benzofuran-2-carboxylate (cas: 1646-27-1) belongs to benzofurans derivatives. Benzofuran is a core structural unit found in many naturally occurring compounds with multidirectional biological activities. As benzofurans are prone to undergo ring opening of the heterocycle, examples of reduction of this type of aromatics by using dissolving metals are rather scarce.Quality Control of Methyl benzofuran-2-carboxylate

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem