Day: November 17, 2022

Cheema, M. N. published the artcileSynergic effect of triphenylphosphine oxide (TPPO) on the extraction of Hg(II), Se(IV), Co(II) and Mn(II) with fluorinated pyrazolone (HPMTFP), Recommanded Product: 5-Methyl-2-phenyl-4-(2,2,2-trifluoroacetyl)-1H-pyrazol-3(2H)-one, the main research area is metal extraction triphenylphosphine oxide HPMTFP; cobalt extraction triphenylphosphine oxide HPMTFP; mercury extraction triphenylphosphine oxide HPMTFP; manganese extraction triphenylphosphine oxide HPMTFP; selenium extraction triphenylphosphine oxide HPMTFP.

Extraction of Hg(II) Se(IV), Mn(II) and Co(II) has been carried out with 1-phenyl-3-methyl-4-trifluoroacetyl-2-pyrazolin-5-one (HPMTFP) and triphenylphosphine oxide (TPPO) in chloroform at pH 1-10. Quant. extraction of Hg(II), Mn(II) and Co(II) at pH 4 with equimolar 0.05 M (PMTFP + TPPO) in chloroform was observed Se(IV) remains unextracted at this pH range. The stoichiometric composition of the extracted complexes M(PMTFP)2·nH2O (M = Mn, Hg), M(PMTFP)2·2TPPO (M = Mn and Co) and Co(PMTFP)2·TPPO · H2O at less than 0.1M TPPO has been established. The formation constants Km,0 and Km,n and stability constants βm,n have been computed. The anal. method developed was applied to the IAEA standard reference material potato fluor V-4 for the determination of these elements using neutron activation technique.

Journal of Radioanalytical and Nuclear Chemistry published new progress about metal extraction triphenylphosphine oxide HPMTFP; cobalt extraction triphenylphosphine oxide HPMTFP; mercury extraction triphenylphosphine oxide HPMTFP; manganese extraction triphenylphosphine oxide HPMTFP; selenium extraction triphenylphosphine oxide HPMTFP. 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, Recommanded Product: 5-Methyl-2-phenyl-4-(2,2,2-trifluoroacetyl)-1H-pyrazol-3(2H)-one.

Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics

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

Uzoukwu, B. A. published the artcile1-Phenyl-3-methyl-4-trifluoroacetylpyrazolone-5 as an extraction and spectrophotometric reagent for iron(III), Application In Synthesis of 1691-93-6, the main research area is iron determination extraction spectrophotometry; phenylmethyltrifluoroacetylpyrazolone reagent iron determination.

A rapid, simple and sensitive extraction method for the determination of Fe (III) spectrophotometrically in buffer solutions using 1-phenyl-3-methyl-4-trifluoroacetylpyrazolone-5 (HPMTFP) is described. The properties of the color of the extracted complex species with respect to pH of aqueous media, presence of synergists, various solvents, time and diverse ions are reported. Up to 500 ppm of Ag+, K+, Na+, Ba2+, Be2+, Ca2+, Cd2+, Co2+, Mg2+, Mn2+, Ni2+, Pb2+, Sr2+ and Zn2+ do not interfere. The tolerance level of the following ions which interfere were determined (ppm): Cu2+ â‰?20, Ce4+ â‰?8, Cr6+ â‰?100, Mo6+ â‰?8, U6+ â‰?50, V4+ â‰?300, V5+ â‰?20 and W6+ â‰?8. Beer’s law is valid up to 10 ppm Fe (III) (ε, 7.32 ± 0.08 × 103 L mol-1 cm-1) within an optimum pH range of 1.5-4.5.

Journal of the National Science Council of Sri Lanka published new progress about iron determination extraction spectrophotometry; phenylmethyltrifluoroacetylpyrazolone reagent iron determination. 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 In Synthesis of 1691-93-6.

Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics

Tawil, Bassem F. published the artcileSynthesis of the spermidine alkaloid (±)-N(1)-acetyl-N(1)-deoxymayfoline, SDS of cas: 27412-71-1, the main research area is deoxymayfoline acetyl synthesis; mayfoline acetyldeoxy synthesis.

The total synthesis of the spermidine alkaloid (±)-N(1)-acetyl-N(1)-deoxymayfoline [(±)-I, R = Ac] was achieved by expansion of rings. The 5-membered cyclic compound II was fused with butadiene by intermol. Diels-Alder cycloaddition The resulting 7-phenyl-1,6-diazabicyclo[4.3.0]nona-3,7-dien-9-one was reductively cleaved with Raney-Ni in alc. KOH to afford the mono-cyclic lactam III (R1 = H). This was selectively alkylated in high yields to the cyano derivative III (R1 = CH2CH2CN). Reduction of the nitrile group to the amine derivative went smoothly by use of Adam’s catalyst in the presence of acid. Intramol. transamidation was then accomplished by acid catalysis to furnish the 13-membered diazalactam I (R = H). The synthesis of (±)-I (R = Ac) was completed by the selective acetylation of the more nucleophilic amino group.

Tetrahedron published new progress about deoxymayfoline acetyl synthesis; mayfoline acetyldeoxy synthesis. 27412-71-1 belongs to class pyrazoles-derivatives, name is 5-Phenyl-1H-pyrazol-3(2H)-one, and the molecular formula is C9H8N2O, SDS of cas: 27412-71-1.

Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics

Hasany, Syed Moosa published the artcileExtractive separation and preconcentration of divalent copper from aqueous media, Related Products of pyrazoles-derivatives, the main research area is copper preconcentration extraction; phenylmethyltrifluoroacetylpyrazolone extraction copper; pyrazolone extraction copper.

The extraction off Cu(II) with 1-phenyl-3-methyl-4-trifluoro-acetyl-5-pyrazolone (FAP) in CHCl3 was studied. Complete extraction of the metal was achieved from pH 4-6 buffers. The extractability of other elements was examined under the optimal conditions selected from Cu extraction to check the selectivity. Extracted Cu can be stripped quant. into aqueous solutions A simple and rapid separation and preconcentration procedure Cu(II) is described for anal. applications.

Radiochimica Acta published new progress about copper preconcentration extraction; phenylmethyltrifluoroacetylpyrazolone extraction copper; pyrazolone extraction copper. 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, Related Products of pyrazoles-derivatives.

Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics

Katritzky, Alan R. published the artcileNovel chromophoric heterocycles based on maleimide and naphthoquinone, Quality Control of 27412-71-1, the main research area is heterocyclic dye pigment; halomaleimide condensation nucleophile; chloronaphthoquinone condensation nucleophile.

1-Phenyl-3,4-dichloromaleimide, 1-propyl-3-bromomaleimide, and 2,3-dichloro-1,4-naphthoquinone were condensed with nucleophiles such as pyrazole, 4-pyridone, imidazole, PhNHNH2, o-H2NC6H4OH, o-H2NC6H4SH, 1,2,4-triazole, benzotriazole, pyridine, etc., to yield a range of heterocyclic dyes and pigments, the visible absorption spectra of which were discussed.

Journal of Heterocyclic Chemistry published new progress about Dyes. 27412-71-1 belongs to class pyrazoles-derivatives, name is 5-Phenyl-1H-pyrazol-3(2H)-one, and the molecular formula is C9H8N2O, Quality Control of 27412-71-1.

Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics

Saeed, M. Mufazzal published the artcileSynergic extraction of Eu(III) with 3-methyl-1-phenyl-4-trifluoroacetyl-2-pyrazolin-5-one (HPMTFP) and tribenzylamine (TBA) from perchlorate media, Recommanded Product: 5-Methyl-2-phenyl-4-(2,2,2-trifluoroacetyl)-1H-pyrazol-3(2H)-one, the main research area is extraction europium fluoroacetylpyrazolinone benzylamine aqueous perchlorate; formation constant europium complex synergic extraction; partition europium extraction fluoroacetylpyrazolinone benzylamine.

Synergic extraction of hydrolyzable lanthanide Eu(III) was studied at low pH range with 0.05 M (HPMTFP + TBA) in CHCl3 from aqueous perchlorate media. The composition of the adduct was established as Eu(PMTFP)3·TBA and Eu(PMTFP)3·2TBA under the conditions of 0.01 M ≥ TBA. The formation constants Ka, Ksyn1, and Ksyn2 and stability constants β1, β2, and K2 of the organic phase reaction were calculated Among the various anions and cations tested, fluoride, oxalate, phosphate, EDTA, Cu(II), and Ti(IV) have drastically reduced the extraction of Eu, whereas oxalate partially reduces the extraction

Radiochimica Acta published new progress about Anions. 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, Recommanded Product: 5-Methyl-2-phenyl-4-(2,2,2-trifluoroacetyl)-1H-pyrazol-3(2H)-one.

Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics

Veibel, Stig published the artcilePyrazole studies. VI. Variation of the basic properties of pyrazolones with substitution in the pyrazolone nucleus, Name: 5-Phenyl-1H-pyrazol-3(2H)-one, the main research area is .

cf. C.A. 48, 674g. pKB values were determined for a number of pyrazolones by titration with HClO4 in glacial HOAc. The compounds studied (R’s shown only when other than H), pKB, and m. ps. were: (I), 11.5, 165°; (II), R3 = Me, 10.9, 216-18°; (III), R3 = Me3C, 11.1, 200°; (IV), R3 = Me, R4 = Et, 11.1, 227-8°; (V), R3 = Me, R4 = C3H7, 11.2, 207-8°; (VI), R3 = Me, R4 = C3H5, 11.2, 195-6°; (VII), R3 = Me, R4 = Ph, 11.4, 208-10°; (VIII), R3 = Ph, 11.4, 232-3°; (IX), R1 = R3 = Me, 10.3, 117° (b19 130°); (X), R1 = R3 = Me, R4 = Et, 10.5, 94-5° (from EtOAc) (b15 137°); (XI), R1 = R3 = Me, R4 = C3H7, 10.5, 84-5° (from EtOAc) (b15 150°); (XII), R1 = R3 = Me, R4 = C3H5, 10.5, 71-2°; (XIII), R1 = R3 = Me, R4 = Ph, 10.9, 175° (from aqueous MeOH); (XIV), R1 = Me, R3 = Ph, 10.9, 206°; (XV), R1 = Ph, R3 = Me, 11.3, 127°; (XVI), R1 = Ph, R3 = Me, R4 = Et, 11.5, 111°; (XVII), R1 = Ph, R3 = Me, R4 = Pr, 11.4, 101-2° (XVIII), R1 = R4 = Ph, R3 = Me, 11.9, 199-200°; (XIX), R1 = R3 = Ph, 12.2, 137°; (XXa), R1 = Ph, R3 = Me, R4 = Cl, 13.2, 153°; (XXb), R1 = Ph, R3 = Me, R4 = Br, 13.3, 122°; (XXI), R1 = Ph, R2 = R3 = Me, 11.2, 113°; (XXII), R1 = Ph, R2 = R3 = Me, R4 = Me2CH, 11.6, 101-3°; (XXIII), R1 = Ph, R3 = Me, R4 = pyrazolonyl, 13.0, decompose; (XXIV), R1 = Ph, R3 = Me, R4 = 3-methyl-5-oxo-1-phenyl-2-oxazolidin-4-ylidenemethyl, 13.8, 185°; (XXV), R1 = Ph, R3 = Me, R4 = PhCH:CPh, 12.2, 220°; (XXVI), R3 = Me, R2 = R4 = Et, > 15, 104-5°; (XXVII), R1 = Ph, R2 = R3 = Me, R4 = Cl, > 15, 68°; (XXVIII), R1 = Ph, R2 = R4 = Et, R3 = Me, > 15, 161-2°; (XXIX), R1 = Ph, R4 = Me, 12.2, 167°; (XXX), R1 = Ph, R3 = Et, R4 = Me, 12.3, 172°; (XXXI), R1 = R4 = Ph, 12.9, 256°; (XXXII), R1 = Ph, R2 = R4 = Me, 11.6, 113°; and (XXXIII), R1 = Ph, R2 = OMe (at C3), R4 = Me, 12.5, b16 154-6°. Me3CCOCH2CO2Et (7.5 g.), 10 cc. EtOH and 4 cc. 60% N2H4.H2O allowed to stand 2-3 hrs. and filtered gave 4.2 g. III, recrystallized from aqueous EtOH. VII was similarly prepared in 27% yield from AcCHPhCO2Et (XXXIV). In the preparation of IX to XIV, a suspension of 1 mole Ba(OH)2.8H2O in 500 cc. H2O was heated at 100°, 1 mole N2H4.H2SO4 in 150 cc. H2O at 70° added, then 300 cc. H2O, the mixture stirred 1 hr. at 70% filtered, the BaSO4 washed with hot H2O, the combined filtrate and washings made up to 1 l. with H2O; heated with 0.2 mole α-substituted Et acetoacetate or Et benzoylacetate and 200 cc. N MeNHNH2 at 70° for various times, the solution extracted twice with ligroine, the H2O removed at 45-50° in vacuo from the aqueous layer, the residue taken up in CHCl3, dried with anhydrous Na2SO4, the CHCl3 evaporated, and the crude pyrazolone purified. The yields of IX to XIV were 51, 60, 65, 50, 70, and 65%, resp., and the reaction time 0.5, 10, 10, 5, 10, and 10 hrs. XXXIV (4 g.) and 2 g. PhNHNH2 heated 1 hr. at 140° gave 3.2 g. XVIII. XXV was prepared in 50% yield by heating equimolar amounts of 1-phenyl-3-methylpyrazolin-5-one 3-4 hrs. with PhCH2Bz, filtering, washing the product with Et2O, and recrystallizing from glacial HOAc. The dipole moments of XXXII and XXXIII were determined

Acta Chemica Scandinavica published new progress about Basicity. 27412-71-1 belongs to class pyrazoles-derivatives, name is 5-Phenyl-1H-pyrazol-3(2H)-one, and the molecular formula is C9H8N2O, Name: 5-Phenyl-1H-pyrazol-3(2H)-one.

Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics

Mundra, S. K. published the artcileSynergistic extraction of uranyl ion with acylpyrazolones and some oxo donors, Recommanded Product: 5-Methyl-2-phenyl-4-(2,2,2-trifluoroacetyl)-1H-pyrazol-3(2H)-one, the main research area is uranyl extraction acylpyrazolone oxo donor; thermodn extraction uranyl acylpyrazolone oxo donor.

Synergistic extraction of uranyl ion with acyl pyrazolones such as 1-phenyl-3-methyl-4-trifluoroacetyl-pyrazolone-5 (HPMTFP, pKa = 2.7), 1-phenyl-3-methyl-4-acetyl-pyrazolone-5 (HPMAP, pKa = 3.8) in combination with oxo-donors of widely varying basicities, [diphenyl sulfoxide(DPSO), TBP, or TOPO] was studied at various fixed temperatures The results indicate that the equilibrium constants of the organic phase addition reaction (Ks) with these donors follow the order of their basicities (Kh) viz DPSO(0.033) < TBP(0.16) ≪ TOPO(8.9) with their corresponding log Ks values for 3.40, 3.88, 8.05 for HPMTFP system and 3.52, 4.22, 8.04 for HPMAP system. The thermodn. parameters associated with the organic phase addition reaction with these systems were evaluated by the temperature coefficient method. The organic phase addition reaction with TOPO is stabilized both by entropy as well as enthalpy change in both the cases. The high neg. values of enthalpy and low values of entropy for the TBP system may be explained by the addition and not the substitution reaction for the water mols. in the metal chelate. Lanthanide and Actinide Research published new progress about Basicity. 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, Recommanded Product: 5-Methyl-2-phenyl-4-(2,2,2-trifluoroacetyl)-1H-pyrazol-3(2H)-one.

Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics