77287-72-0Relevant articles and documents
Regiocontrolled Synthesis of γ-Hydroxybutenolides via Singlet Oxygen-Mediated Oxidation of 2-Thiophenyl Furans
Kotzabasaki, Vasiliki,Vassilikogiannakis, Georgios,Stratakis, Manolis
supporting information, p. 4406 - 4411 (2016/06/09)
Photooxygenation of 2-thiophenyl-substituted furans in ethanol leads to the rapid, regiocontrolled, and quantitative synthesis of γ-hydroxybutenolides. The carbonyl group in butenolide holds the position of thiophenyl moiety in reacting furans. Decomposit
An analysis of substituent effects on 1H and 13C NMR parameters of substituted furans. Linear free energy relationships and PM3 semiempirical calculations
Alvarez-Ibarra, Carlos,Quiroga-Feijoo, Maria L.,Toledano, Emilio
, p. 679 - 689 (2007/10/03)
Forty five furans have been obtained in a synthetic project designed to evaluate monothiosubstituted furans as potential food flavourings. A full NMR (1H and 13C) study and PM3 molecular orbital semiempirical calculations have been carried out. Substituent-induced chemical shifts (SCS) for six and nine substituents at the 2- and 3-positions have been calculated and a separation of inductive and resonance effects of these substituents has been proposed. Finally, a linear correlation between the net atomic charges localized at ring carbons and their 13C NMR chemical shifts has been established.
