| Abstract: | The infrared and Raman Spectra of saturated and unsaturated  2-oxazolin-5-ones (azlactones) have been studied for CCl2, CHCl3, i-PrOH, and t-BuOH solutions and for the solid phase. Frequency assignments have been made for C=O bond stretching in the region 1825–1770 cm–1 and for a mixed C=C and C=N vibration at 1690–1550 cm–1. All of the azlactones showed an intense, characteristic absorption in a narrow range near 900 cm–1 which was assigned to a deformation vibration of the oxazolone ring.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 8, pp. 1133–1136, August, 1989. |
