Umetani, S. published the artcileAdduct formation properties of some polydentate phosphine oxides in the synergistic extraction of metals with 4-acyl-5-pyrazolone derivatives, Synthetic Route of 1691-93-6, the main research area is extraction transition metal pyrazolone adduct; acrylpyrazolone extraction transition metal synergism; phosphoryl compound extraction synergism pyrazolone.
Some bi- and tridentate phosphine oxide compounds were synthesized and liquid-liquid extraction equilibrium of metal ions with 4-acyl-5-pyrazolone derivatives and the neutral phosphine oxide compounds were investigated. Bis(diphenylphosphinyl)methane was found to be a very powerful ligand in the synergistic extraction of rare earths, alk. earths and the divalent metals such as Co(II), Ni(II), Zn(II) and Cd(II). The composition of the extracted species were determined by a graphical method. The adduct formation constants between the acylpyrazolone chelates and the neutral ligands were determined and discussed in terms of the mol. structure.
Process Metallurgy published new progress about Extraction. 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, Synthetic Route of 1691-93-6.
Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics