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
内部全氟烯烃的氧化物的反应1 - 3与脲,得到2种含有取决于溶剂的性质的N-杂环化合物的新的氟的:1,5-双(全氟烷基)四氮杂[3.3.0]辛烷-3,7-二酮4a – c和2-氨基-5-氟-4,5-双(全氟烷基)-4,5-二氢恶唑-4-醇7a – d。使用极性二甲基亚砜,N,N-二甲基乙酰胺和乙腈可中等产率获得甘脲4a – c。在二恶烷中,意外的环化反应产生了高产的恶唑啉7a - d。环氧乙烷2的类似反应,3与脲在二恶烷水溶液中的混合物得到4,5-二羟基-4,5-双(全氟烷基)咪唑烷-2-酮9b,c,甘脲4b,c和恶唑啉7b - d的混合物。恶唑啉7b和咪唑烷9b的反式异构体的分子结构已经通过X射线晶体学确定。