64028-06-4Relevant academic research and scientific papers
Synthesis and chemistry of perfluoro macrocycles
Lin,Lin,Clark,Lagow,Larson,Simonsen,Lynch,Brodbelt,Maleknia,Liou
, p. 5172 - 5179 (2007/10/02)
The perfluoro macrocycles perfluoro-18-crown-6, perfluoro-12-crown-4, perfluoro-15-crown-5, perfluoro-cyclohexano-15-crown-5, perfluorodicyclohexano-18-crown-6, perfluorodicyclohexano-24-crown-8, and perfluoro-4,7,13,16,21,24-hexaoxa-1, 10-diazabicyclo[8,8,8] hexacosane (perflorocyptand [222] have been prepared by carefully controlled elemental fluorination. Although they are much weaker bases than their hydrocarbon analogues, these perfluoromacrocycles are very stable materials which should have a number of applications. The crystal structures of perfluoro-18-crown-6 and of a perfluorodicyclohexano-18-crown-6 isomer are reported. Gas-phase studies with several perfluoro crown ethers and with the perfluorocryptand [222] have shown that such macrocycles tenaciously bind O2- and F-. Perfluoro crown ethers and cryptands coordinate anions preferentially over cations. The collisionally activated mass spectra of several perfluoro macrocylic ions are described.
SYNTHESIS OF PERFLUOROETHERS BY LIQUID PHASE FLUORINATION
Modena, Silvana,Calini, Pierangelo,Gregorio, Guglielmo,Moggi, Giovanni
, p. 349 - 358 (2007/10/02)
Liquid phase fluorination of diethyleneglycol dimethyl ether, tetraethyleneglycol dimethyl ether, 2 tetrahydrofuran and 2 dioxane 1,4 produce the corresponding perfluoroethers in 56, 43, 67 and 74 percent yields respectively.The by-products are partially fluorinated compounds and no fragmentation is observed.The simplicity of the reactions and method of preparation make this approach to fluorinated fluids and oils industrially attractive.
The First Perfluoro Crown Ethers
Lin, Wen-Huey,Bailey, Webb I.,Lagow, Richard J.
, p. 1350 - 1352 (2007/10/02)
The first perfluoro crown ethers, perfluoro 18-crown-6, perfluoro 15-crown-5, and perfluoro 12-crown-4, have been prepared by carefully controlled elemental fluorination; although they are weaker bases than their parent compounds, perfluoro crown ethers are materials which will have a number of applications.
