Uehara, Akihiro published the artcileA new electrochemical method to study the distribution of weak acids at the aqueous|organic solution interface, Safety of 5-Methyl-2-phenyl-4-(2,2,2-trifluoroacetyl)-1H-pyrazol-3(2H)-one, the main research area is electrochem method weak acid distribution aqueous organic solution interface; phenylmethylbenzoylpyrazolone distribution aqueous organic solution interface electrochem method; phenylmethyltrifluoroacetylpyrazolone distribution aqueous organic solution interface electrochem method; thenoyltrifluoroacetone distribution aqueous organic solution interface electrochem method; dichloroethane water interface weak acid distribution electrochem method.
The distribution process of a weak acid, HA, between an aqueous and an organic solution, W and O, was assumed to be the transfers of the dissociation products, H+ and A-, between W and O combined with the associations of H+ and A- in W and O. The transfers were considered to proceed depending on Gibbs energies for the transfer of H+ and A- from W to O, ΔGotr,H+ and ΔGotr,A-, and maintaining electroneutrality in both W and O. Then, a theor. equation was derived for quant. expressions of distribution ratios, D, of species relative to HA between W and O at various pH of W by using ΔGotr,H+ and ΔGotr,A- and acid dissociation constants of HA in W and O, Ka,W and Ka,O. The D calculated by substituting Ka,W, Ka,O, ΔGotr,H+ and ΔGotr,A- determined with the aid of electrochem. methods for those in the derived equation agreed well with D determined by the distribution experiments with W of wide pH range. The HA studied were chelating agents such as 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone, 1-phenyl-3-methyl-4-trifluoroacetyl-5-pyrazolone and thenoyltrifluoroacetone.
Journal of Electroanalytical Chemistry published new progress about Electrolysis (controlled potential-difference). 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, Safety of 5-Methyl-2-phenyl-4-(2,2,2-trifluoroacetyl)-1H-pyrazol-3(2H)-one.
Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics