Umetani, Shigeo published the artcileSolvent extraction of lithium and sodium with 4-benzoyl or 4-perfluoroacyl-5-pyrazolone and TOPO, Application of 5-Methyl-2-phenyl-4-(2,2,2-trifluoroacetyl)-1H-pyrazol-3(2H)-one, the main research area is lithium extraction perfluoroacylpyrazolone; sodium extraction benzoylpyrazolone TOPO; pyrazolone acyl TOPO extraction alkali.
The synergic solvent extraction of Li+ and Na+ into C6H6 or cyclohexane with 4-benzoyl- or 4-perfluoroacyl-5-pyrazolone and trioctylphosphine oxide (TOPO) was studied. Quant. extraction (>99%) of Li+, which is one of the most poorly extractable metal ions, can be achieved with 1-tolyl-3-methyl-4-perfluoroacyl-5-pyrazolone and TOPO. The extraction of Na+ is somewhat poorer than that of Li+ under the same conditions. The perfluoroacyl group at the 4-position of the pyrazolone ring enhances the extraction and increases the maximum percentage extracted Cyclohexane is found to be suitable for a quant. extraction as an organic phase when the reagents are soluble in it. Improved separation of Li+ and Na+ can be attained when they are extracted into C6H6.
Talanta published new progress about lithium extraction perfluoroacylpyrazolone; sodium extraction benzoylpyrazolone TOPO; pyrazolone acyl TOPO extraction alkali. 1691-93-6 belongs to class pyrazoles-derivatives, name is 5-Methyl-2-phenyl-4-(2,2,2-trifluoroacetyl)-1H-pyrazol-3(2H)-one, and the molecular formula is C12H9F3N2O2, Application of 5-Methyl-2-phenyl-4-(2,2,2-trifluoroacetyl)-1H-pyrazol-3(2H)-one.
Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics