title: [The substituent structures and characteristic infrared spectra of alpha-furan esters].
abstract: The characteristic infrared bands of the alpha-furoic esters, alpha-furancarbinol esters and alpha-furanacrylic esters were assigned, and the changing rules of the IR absorption frequency of the alpha-furan esters with alpha-substituent structure were discussed. The results indicated there are three characteristic bands in alpha-furan ring. The strong absorption at 1641 cm(-1) is assigned to the C=C double bond stretching mode in the alpha-furanacrylic esters, while the absorption at 973 cm(-1) is the out-of-plane =C-H bending mode for a trans di-substituted alkene, the strong absorption at about 1713 cm(-1) is assigned to a C=O stretch, and the three strong absorptions near 1305, 1260 and 1165 cm(-1) are due to the symmetric and assymmetric stretching vibrations of C-O-C bond in the ester groups.
authors.affiliation: Institute of Chemistry and Engineering, Liaoning University, Shenyang.
authors.forename: L
authors.initials: L
authors.lastname: Yao
authors.forename: C
authors.initials: C
authors.lastname: Su
authors.forename: L
authors.initials: L
authors.lastname: Qi
authors.forename: C
authors.initials: C
authors.lastname: Liu
authors.forename: Y
authors.initials: Y
authors.lastname: Hu
authors.forename: H
authors.initials: H
authors.lastname: Zhao
mesh_terms: D004952:Esters / Q000737:chemistry*; D005503:Food Additives / Q000737:chemistry*; D005663:Furans / Q000737:chemistry*; D015394:Molecular Structure; D013055:Spectrophotometry, Infrared
chemical_list: D004952:Esters; D005503:Food Additives; D005663:Furans; C039281:furan