title: Conformational flexibility of Corey lactone derivatives indicated by absorption and vibrational circular dichroism spectra.
abstract: Infrared absorption and vibrational circular dichroism (VCD) spectra of four Corey lactone derivatives (diol, benzoate, p-phenylbenzoate, and bisbenzoate) were measured and analyzed on the basis of ab initio computations. The analysis interpreted most of the spectral features as well as the differences among individual compounds. Despite the common rigid lactone residue, conformational behaviors and spectral features of the derivatives were found to be different, because of hydrogen bonding and solvent effects. Recognition of common molecular parts in the spectra of different molecules increases the potential of using VCD for monitoring the purity of intermediates in chiral syntheses. For the derivatives, a conserved spectral component corresponding to the lactone skeleton could be identified on the basis of theoretical analysis but was relatively weak in intensity.
authors.affiliation: Department of Analytical Chemistry, Institute of Chemical Technology, Technická 5, 16628 Praha 6, Czech Republic.
authors.forename: Zuzana
authors.initials: Z
authors.lastname: Tománková
authors.forename: Vladimír
authors.initials: V
authors.lastname: Setnicka
authors.forename: Marie
authors.initials: M
authors.lastname: Urbanová
authors.forename: Pavel
authors.initials: P
authors.lastname: Matejka
authors.forename: Vladimír
authors.initials: V
authors.lastname: Král
authors.forename: Karel
authors.initials: K
authors.lastname: Volka
authors.forename: Petr
authors.initials: P
authors.lastname: Bour