The present invention relates to a method for the synthesis of highly fluorinated compounds and to novel highly fluorinated compounds. In particular, the present invention relates to the synthesis of highly fluorinated acetals and ketals and their thio analogues and to novel highly fluorinated acetals and ketals and their thio analogues.
Thermomorphic metal scavengers: A synthetic and multinuclear NMR study of highly fluorinated ketones and their application in heavy metal removal
作者:Robert J. Baker、Thomas McCabe、John E. O’Brien、Helen V. Ogilvie
DOI:10.1016/j.jfluchem.2010.02.004
日期:2010.5
ketone with two long chain perfluoroalkyl groups is reported via the coupling reaction of a perfluorinated alkylzinc reagent and a perfluoro-acid chloride. This ketone has been investigated in the heterogeneous removal of heavy metals M2+ (M = Sn, Cd, Pb, Hg) and As5+ from aqueous solutions and removal of these metals from organic solvents using the unique thermomorphic properties of the fluorous ketone
Perfluorinated oxygen- and sulfur-containing compounds as extractants for gold(III)
作者:Julia Baker、Robert J. Baker、Carola Schulzke
DOI:10.1007/s13404-011-0011-z
日期:2011.6
A series of highly fluorinated compounds of the type CF3(CF2)5CH2CH2}3P=O, [CF3(CF2)5CH2CH2}2P(E)CH2CH2P(E)CH2CH2(CF2)5CF3}] and CF3(CF2)5CH2CH2}2C=E (E = O or S) have been examined for their ability to extract gold(III) from aqueous solutions. The phosphine oxides have been studied under liquid–liquid extraction conditions from water into perfluorohexane and found to give poor distribution ratios. The bidentate phosphine oxide, ketone and thioketone were studied under solid–liquid extraction conditions and were substantially better with extraction of up to 80% of Au(III). In addition, the crystal structure of CF3(CF2)5CH2CH2}3P=O has been determined.
我们研究了一系列CF3(CF2)5CH2CH2}3P=O、[CF3(CF2)5CH2CH2}2P(E)CH2CH2P(E)CH2CH2(CF2)5CF3}]和CF3(CF2)5CH2CH2}2C=E(E = O 或 S)型高氟化合物从水溶液中萃取金(III)的能力。研究人员在液-液萃取条件下将膦氧化物从水中萃取到全氟己烷中,发现它们的分布比率较低。在固液萃取条件下研究了双齿膦氧化物、酮和硫酮,结果发现它们的萃取效果更好,金(III)的萃取率高达 80%。此外,还确定了 CF3(CF2)5CH2CH2}3P=O 的晶体结构。