Tag: M.W=250-300

Kang, Quan-Peng published the artcileSymmetric containing-PMBP N₂O₂-donors nickel(II) complexes: Syntheses, structures, Hirshfeld analyses and fluorescent properties, Formula: C17H14N2O2, the publication is Polyhedron (2019), 38-50, database is CAplus.

One mononuclear Ni(II) complex [Ni(L¹)(MeOH)₂]·MeOH (1) and two novel trinuclear Ni(II) complexes [Ni₃(L²)₃(EtOH)₆] (2) and [Ni₃(L²)₃(H₂O)₆] (3) constructed from sym. N₂O₂-donors chelating ligands (H₂L¹ and H₂L²) were synthesized and characterized by elemental analyses, FT-IR, UV-Vis spectra and fluorescence spectra. The structures of all three complexes were confirmed by single crystal x-ray diffraction analyses. Complex 1 includes one Ni(II) atom, one completely deprotonated (L¹)^2- unit and two coordinated methanol mols., and forms an infinite 2D supramol. network via the intermol. hydrogen bonds. While complex 2 or 3 is trinuclear with three Ni(II) atoms, three completely deprotonated (L²)^2- units and six coordinated ethanol or H₂O mols. These self-assembling complexes form different dimensional supramol. structures through inter- and intramol. hydrogen bonds. Hirshfeld surface analyses for complexes 1, 2 and 3 were mapped with various functions and further quantification of intermol. interactions was made through the generation of 2D fingerprint plots. In addition, the fluorescence titration experiments were used to characterize fluorescence properties of complexes 1 and 2.

Polyhedron published new progress about 4551-69-3. 4551-69-3 belongs to pyrazoles-derivatives, auxiliary class Benzenes, name is 4-Benzoyl-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one, and the molecular formula is C17H14N2O2, Formula: C17H14N2O2.

Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics

Lu, Youcai published the artcileExtraction and Separation of Rare Earths from Nitrate Medium by Mixtures of p-Phosphorylated Calixarene and 1-Phenyl-3-methyl-4-benzoyl-pyrazalone-5, Safety of 4-Benzoyl-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one, the publication is Chinese Journal of Chemistry (2014), 32(10), 1077-1082, database is CAplus.

The gadolinium extraction by the mixtures of p-phosphorylated calixarene and 1-phenyl-3-methyl-4-benzoyl- pyrazalone-5 from nitrate medium was studied, which indicated an obvious synergistic effect between these two extractants. The extractants exhibit no interaction with each other before the metal extraction Gadolinium(III) was extracted by the species of Ln(PMBP)₂L₂(NO₃) instead of Ln(PMBP)₃·(HPMBP) or Ln(NO₃)₃·2L which are extracted by HPMBP or L alone. Thermodn. functions (ΔG, ΔH, ΔS) were calculated The extraction of other rare earths was also investigated and compared. Possible single rare earth separation was discussed.

Chinese Journal of Chemistry published new progress about 4551-69-3. 4551-69-3 belongs to pyrazoles-derivatives, auxiliary class Benzenes, name is 4-Benzoyl-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one, and the molecular formula is C17H14N2O2, Safety of 4-Benzoyl-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one.

Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics

Pan, Zhongwei published the artcileStudies on extraction equilibrium of rare earths in ion liquid extraction system using 1-butyl-3-methyl-imidazolium hexafluorophosphate and 1-phenyl-3-methyl-4-benzoyl-pyrazolone-5, Formula: C17H14N2O2, the publication is Advanced Materials Research (Durnten-Zurich, Switzerland) (2013), 602-604(Pt. 2), 887-891, database is CAplus.

The extraction equilibrium of four rare earth ions (REⁿ⁺, n = 3 or 4) was investigated in ionic liquid (IL) extraction system using 1-butyl-3-methyl-imidazolium hexafluorophosphate ([Bmim]PF₆) ionic liquid as extraction solvent and 1-phenyl-3-methyl-4-benzoyl-pyrazolone-5 (HPMBP, HP) as extractant. The extraction percentage could be higher than 99%. The extracted species in the REⁿ⁺-[Bmim]PF₆-HP system was neutral REP_n (n = 3 or 4) and complete recovery of REⁿ⁺ extracted into [Bmim]PF₆ can be achieved using diluent HCl as stripping agent. [Bmim]PF₆ can be recycled in the experiment The extraction equilibrium constants and the pH_1/2 values of four REs and their separation factors between adjacent rare earths were estimated and comparatively studied.

Advanced Materials Research (Durnten-Zurich, Switzerland) published new progress about 4551-69-3. 4551-69-3 belongs to pyrazoles-derivatives, auxiliary class Benzenes, name is 4-Benzoyl-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one, and the molecular formula is C17H14N2O2, Formula: C17H14N2O2.

Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics

Wu, Jing published the artcileElectronic and steric effects of substituents in series of Zn²⁺ asymmetrical bis-Schiff-base ligands complexes on catalytic ring-opening copolymerization of CHO and MA, SDS of cas: 4551-69-3, the publication is Journal of Organometallic Chemistry (2014), 302-311, database is CAplus.

Based on the half-unit Schiff-base ligand HL and series of asym. bis-Schiff-base ligand H₂Lⁿ (n = 1-6) in situ synthesized from the reaction of 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone (PMBP), o-phenylenediamine, and/or different salicylaldehyde derivatives, complexes [Zn(L)₂] (1) and series of [Zn(Lⁿ)] (n = 1-6, 2-7) are obtained, resp. Complex 1 proves to be inactive, resulting from its saturated octahedral coordination environment around the central Zn²⁺ ion, while in complexes 2-7, the unsaturated coordination environment for the catalytic active centers (Zn²⁺ ions) permits the monomer insertion for the effective bulk or solution copolymerization of CHO (cyclohexene oxide) and MA (maleic anhydride). As to the electron and steric effect in complexes 2-7 on the catalytic behaviors, the copolymerization results show that the introduction of withdrawing -Br substituent para to the phenoxide group endows higher reactive activity, while the bulkiness effect of the encumbering substituent (-Br, -OMe or tert-butyl) ortho to the phenoxide groups is in favor of the chain growth of the copolymers. Moreover, all the bulk copolymerizations in 2-7/DMAP (4-(dimethylamino)pyridine) systems afford poly(ester-co-ether)s, while lower catalyst and co-catalyst concentration for 3/DMAP system is helpful for the formation of perfectly alternating polyester in solution Of the three co-catalysts, DMAP is found to be the most efficient, while an excess thereof is detrimental for the chain growth of the copolymers.

Journal of Organometallic Chemistry published new progress about 4551-69-3. 4551-69-3 belongs to pyrazoles-derivatives, auxiliary class Benzenes, name is 4-Benzoyl-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one, and the molecular formula is C17H14N2O2, SDS of cas: 4551-69-3.

Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics

Zhu, Luqun published the artcileA trinuclear [Zn₃(L)₂(OAc)₂] complex based on the asymmetrical bis-Schiff-base ligand H₂L for ring-opening copolymerization of CHO and MA, Application of 4-Benzoyl-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one, the publication is Inorganic Chemistry Communications (2013), 182-185, database is CAplus.

Based on asym. bis-Schiff-base ligand H₂L from o-vanillin and the half-unit Schiff-base precursor HL synthesized from 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone (PMBP) and o-phenylenediamine, a trinuclear [Zn₃(L)₂(OAc)₂] (1) is obtained. In complex 1, the unsaturated five and four-coordinate coordination environment for the catalytic active centers (Zn²⁺ ions) permits the monomer insertion for the effective bulk or solution copolymerization of CHO (cyclohexene oxide) and MA (maleic anhydride) in the presence of co-catalyst of DMAP (4-(dimethylamino)pyridine), TPP (triphenylphosphine) or n-Bu₄NBr. All the bulk copolymerizations afford poly(ester-co-ether)s, while some of the solution copolymerizations produce perfectly alternating polyester copolymers. Of the three co-catalysts, DMAP is found to be the most efficient, while an excess thereof is detrimental for chain growth of the copolymers.

Inorganic Chemistry Communications published new progress about 4551-69-3. 4551-69-3 belongs to pyrazoles-derivatives, auxiliary class Benzenes, name is 4-Benzoyl-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one, and the molecular formula is C12H16N2O2, Application of 4-Benzoyl-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one.

Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics

Pan, Fu-de published the artcileDetermination of total amount of rare earth elements in tea by arsenazo III-spectrophotometry coupled with extraction with PMBP, Name: 4-Benzoyl-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one, the publication is Lihua Jianyan, Huaxue Fence (2016), 52(1), 93-95, database is CAplus.

In the work, the sample was subjected to mixed acid digestion, the test solution was purified by combined masking, extraction, and back extraction methods, and the content of rare earth elements was determined by arsenazo III-spectrophotometry. The results of the method were accurate and reliable. Spectrophotometry had the advantages of simplicity, fastness, low cost, etc., and had the significance of popularization and application.

Lihua Jianyan, Huaxue Fence published new progress about 4551-69-3. 4551-69-3 belongs to pyrazoles-derivatives, auxiliary class Benzenes, name is 4-Benzoyl-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one, and the molecular formula is C17H14N2O2, Name: 4-Benzoyl-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one.

Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics

Liu, Chen-Fei published the artcileIridium(III)-Catalyzed Tandem Annulation Synthesis of Pyrazolo[1,2-α]cinnolines from Pyrazolones and Sulfoxonium Ylides, Application In Synthesis of 4551-69-3, the publication is Journal of Organic Chemistry (2019), 84(1), 409-416, database is CAplus and MEDLINE.

A highly efficient iridium-catalyzed cascade annulation of pyrazolones and sulfoxonium ylides to access various pyrazolo[1,2-α]cinnoline derivatives has been achieved. This novel approach expanded the application scope of coupling partners to ylides. The control experiments were performed to give insight into the mechanism of this reaction.

Journal of Organic Chemistry published new progress about 4551-69-3. 4551-69-3 belongs to pyrazoles-derivatives, auxiliary class Benzenes, name is 4-Benzoyl-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one, and the molecular formula is C17H14N2O2, Application In Synthesis of 4551-69-3.

Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics

Avinesh, P. published the artcileFacile Synthesis of Fully Decorated Imidazo[4,5-b] and Imidazo[4,5-c] Pyridines in Aqueous DMF via C-H Activation under Microwave Irradiation, HPLC of Formula: 1190875-39-8, the publication is ChemistrySelect (2016), 1(10), 2265-2270, database is CAplus.

Catalytic C-H bond activation of heteroarenes has gained tremendous potential in recent years due to their environmentally and economically benign nature. In this paper, the regioisomeric synthesis of fully decorated imidazopyridines, e.g., I employing a C-H activation protocol with a wide range of aryl/hetero aryl/alkyl boronic acids, e.g., II in aqueous DMF is reported. The use of inexpensive copper catalyst and bathophenanthroline as ligand were found to be instrumental in driving these reactions to completion. This optimized protocol was further extended to alkyl/aryl/heteroaryl potassium organo trifluoroborates such as potassium trifluoro(4-methoxyphenyl)boranuide, potassium trifluoro[4-(trifluoromethyl)phenyl]boranuide, potassium trifluoro(3,4,5-trimethylphenyl)boranuide, etc. A wide range of diversely substituted imidazo pyridine analogs which are known for their potential therapeutic applications have been synthesized using this highly efficient and atom economical protocol.

ChemistrySelect published new progress about 1190875-39-8. 1190875-39-8 belongs to pyrazoles-derivatives, auxiliary class Pyrazole,Piperidine,Boronic acid and ester,Amide,Boronic Acids,Boronic Acids,Boronic acid and ester,, name is (1-(1-(tert-Butoxycarbonyl)piperidin-4-yl)-1H-pyrazol-4-yl)boronic acid, and the molecular formula is C13H22BN3O4, HPLC of Formula: 1190875-39-8.

Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics

Duan, Yu-Lai published the artcileZirconium and hafnium complexes bearing pyrrolidine derived salalen-type {ONNO} ligands and their application for ring-opening polymerization of lactides, HPLC of Formula: 4551-69-3, the publication is Dalton Transactions (2017), 46(34), 11259-11270, database is CAplus and MEDLINE.

The reactions of pyrrolidine derived salalen-type {ONNO} ligands (S)-L^1-3-H₂ with 1 equivalent M(OⁱPr)₄(HOⁱPr) (M = Zr or Hf) in di-Et ether yielded complexes [L^1-3M(OⁱPr)₂] (L = L¹, M = Zr (1); L = L², M = Zr (2), Hf (3); L = L³, M = Zr (4), Hf (5)). All of these complexes were well characterized by NMR spectroscopy, elemental analyses and single-crystal x-ray anal. in the case of complexes 1 and 3–5. X-ray structural determination revealed that these complexes were analogous mononuclear species and had a similar structure in which the metal centers were six-coordinated to two oxygen atoms and two nitrogen atoms of one ligand and two oxygen atoms of two isopropoxy groups. All of these complexes efficiently initialized the ring-opening polymerization of lactides to afford polymers with controlled mol. weight and narrow polydispersity. Furthermore, the ring-opening polymerization of rac-lactide catalyzed by complexes 1–5 afforded isotactic-enriched polymers in solution (P_m = 0.74-0.80) and under melt conditions (P_m = 0.63-0.72).

Dalton Transactions published new progress about 4551-69-3. 4551-69-3 belongs to pyrazoles-derivatives, auxiliary class Benzenes, name is 4-Benzoyl-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one, and the molecular formula is C17H14N2O2, HPLC of Formula: 4551-69-3.

Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics

Zainul, Rahadian published the artcileEnhanced electrochemical sensor for electrocatalytic glucose analysis in orange juices and milk by the integration of the electron-withdrawing substituents on graphene/glassy carbon electrode, Computed Properties of 4551-69-3, the publication is Journal of Analytical Methods in Chemistry (2022), 5029036, database is CAplus and MEDLINE.

In this work, a novel electrochem. sensor was developed by electron-withdrawing substituent modification of 1-phenyl-3-methyl-4-(4-fluorobenzoyl)-5-pyrazolone on a graphene-modified glassy carbon electrode (HPMpFP-graphene/GCE) for glucose detection. The results of characterizations using a scanning electron microscope, Fourier transform IR spectroscopy, Raman spectroscopy, and NMR spectroscopy showed the successful fabrication of HPMpFP-graphene nanocomposite, which served as an electroactive probe for glucose detection. The electron transfer ability of HPMpFBP-graphene/GCE has been successfully revealed using cyclic voltammetry and electrochem. impedance spectroscopy results. The good electrochem. performance was shown by well-defined peak currents of square wave voltammetry under various parameters, including pH, HPMpFP and graphene composition, and scan rate effect. A high electrochem. evaluated surface area using chronoamperometry suggested that the present glucose detection response was intensified. The chronoamperometry results at a work potential of 0.4 V presented a wide linear range of 1 x 10³-90渭M and 88-1渭M with 0.74渭M (S/N = 3) as the detection limit. An acceptable recovery has been revealed in the real sample anal. The electrochem. sensing behavior of the composite indicates that it may be a promising candidate for a glucose sensor and it significantly extends the range of applications in the electrochem. field.

Journal of Analytical Methods in Chemistry published new progress about 4551-69-3. 4551-69-3 belongs to pyrazoles-derivatives, auxiliary class Benzenes, name is 4-Benzoyl-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one, and the molecular formula is C18H35NO, Computed Properties of 4551-69-3.

Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics