Reactions of 2,3-epoxypolyfluoroalkanes with triethylamine
作者:L. V. Saloutina、M. I. Kodess、A. Ya. Zapevalov
DOI:10.1007/bf00700169
日期:1994.12
The reactions of 2,3-epoxyperfluoro- and 2,3-epoxy-ω-hydropolyfluoroalkanes with excess triethylamine at elevated temperatures yield secondary alcohols, which are the reduction products of intermediate isomeric ketones. Ring-opening occurs preferentially from the side of the less bulky trifluoromethyl group in all compounds except 2,3-epoxy-6-hydroundecafluorohexane.
Synthesis of 2,3-bis(perfluoroalkyl)quinoxalines and 2,3-bis(perfluoroalkyl)-1,4-benzoxazines from oxides of internal perfluoroolefins
作者:Lyudmila V. Saloutina、Aleksandr Ya. Zapevalov、Victor I. Saloutin、Mikhail I. Kodess、Valentina E. Kirichenko、Marina G. Pervova、Oleg N. Chupakhin
DOI:10.1016/j.jfluchem.2005.05.001
日期:2005.6
The reactions of oxides of internal trans-, cis-perfluoroolefins with o-phenylenediamine and 2-aminophenol in dioxane gave 2,3-bis(perfluoroalkyl)quinoxalines and 2,3-bis(perfluoroalkyl)-2H-1,4-benzoxazin-2-ols respectively in yields of 23–67%. When N,N-dimethylacetamide was used as a solvent an anionic isomerization of the oxides into ketones, which further yielded 2-(perfluoroalkyl)benzimidazoles
Synthesis of fluorine containing glycolurils and oxazolines from oxides of internal perfluoroolefins
作者:Lyudmila V. Saloutina、Aleksandr Ya. Zapevalov、Victor I. Saloutin、Pavel A. Slepukhin、Mikhail I. Kodess、Oleg N. Chupakhin
DOI:10.1016/j.jfluchem.2009.06.016
日期:2009.10
yields. In dioxane, unexpected cyclization occurred resulting in oxazolines 7a–d in high yields. A similar reaction of oxiranes 2, 3 with urea in aqueous dioxane gave mixtures of 4,5-dihydroxy-4,5-bis(perfluoroalkyl)imidazolidine-2-ones 9b, c, glycolurils 4b, c and oxazolines 7b–d. The molecular structure of trans-isomers of oxazoline 7b and imidazolidine 9b has been established by X-ray crystallography
5-di(polyfluoroalkyl)-1,3-thiazolines, respectively. Asymmetric oxiranes yield mixtures of regioisomers, and the ring opening has been found to occur mainly near the bulkier fluoroalkyl group. The reaction with thiourea proceeds stereospecifically in dimethyl sulfoxide. The molecular structure of E-isomers of 2-amino-5-fluoro-4-hydroxy-4,5-bis(trifluoromethyl)-1,3-thiazoline and 2-amino-5-fluoro-5-heptafluorop