Tag: M.W=0-100

Name: 3,5-Dimethyl-1H-pyrazole. Authors Amoah, C; Obuah, C; Ainooson, MK; Muller, A in ELSEVIER SCIENCE SA published article about in [Amoah, Cephas; Obuah, Collins; Ainooson, Michael Kojo] Univ Ghana, Dept Chem, Legon, Ghana; [Obuah, Collins; Ainooson, Michael Kojo; Muller, Alfred] Univ Johannesburg, Dept Chem Sci, Auckland Pk Kingsway Campus, ZA-2006 Johannesburg, South Africa in 2021.0, Cited 31.0. The Name is 3,5-Dimethyl-1H-pyrazole. Through research, I have a further understanding and discovery of 67-51-6

The search for new fluorescent materials with high quantum yields has been the focus of research, considering the diverse applications that fluorescent materials present. In this study, ferrocenyl pyrazolyl (L1) and ferrocenyl triazolyl (L2) ligands and their palladium metal complexes (1 and 2) were synthesized to investigate their fluorescence properties. While the pyrazolyl ligand was prepared through a ligand substitution reaction, synthesis of the triazolyl derivative involved the [3 + 2] azide-alkyne using click chemistry. All the prepared compounds have been characterized by NMR and IR spectroscopy, elemental analysis, mass spectrometry and single-crystal X-ray crystallography. These air-stable compounds were prepared in moderate to good yields (70% and 83%). The ferrocenyl-pyrazolyl L1 and ferrocenyl-triazolyl L2 ligands showed near-infrared (NIR) emission bands with quantum yields of 20% and 26% respectively. The addition of the Pd2+ ions results in the reduction of fluorescence intensity and quantum yield. Such fluorescent properties demonstrate their potential use in bio-analysis and as fluorogenic probing. (C) 2020 Elsevier B.V. All rights reserved.

About 3,5-Dimethyl-1H-pyrazole, If you have any questions, you can contact Amoah, C; Obuah, C; Ainooson, MK; Muller, A or concate me.. Name: 3,5-Dimethyl-1H-pyrazole

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

Kuang, YL; Wang, K; Shi, XC; Huang, XQ; Meggers, E; Wu, J in [Kuang, Yulong; Wang, Kai; Shi, Xiangcheng; Wu, Jie] Natl Univ Singapore, Dept Chem, 3 Sci Dr 3, Singapore 117543, Singapore; [Wu, Jie] Natl Univ Singapore Suzhou Res Inst, 377 Lin Quan St,Suzhou Ind Pk, Suzhou 215123, Jiangsu, Peoples R China; [Huang, Xiaoqiang; Meggers, Eric] Philipps Univ Marburg, Fachbereich Chem, Hans Meerwein Str 4, D-35043 Marburg, Germany published Asymmetric Synthesis of 1,4-Dicarbonyl Compounds from Aldehydes by Hydrogen Atom Transfer Photocatalysis and Chiral Lewis Acid Catalysis in 2019.0, Cited 59.0. Recommanded Product: 3,5-Dimethyl-1H-pyrazole. The Name is 3,5-Dimethyl-1H-pyrazole. Through research, I have a further understanding and discovery of 67-51-6.

Enantioenriched 1,4-dicarbonyl compounds are versatile synthons in natural product and pharmaceutical drug synthesis. We herein report a mild pathway for the efficient enantioselective synthesis of these compounds directly from aldehydes through synergistic cooperation between a neutral eosinY hydrogen atom transfer photocatalyst and a chiral rhodium Lewis acid catalyst. This method is distinguished by its operational simplicity, abundant feedstocks, atom economy, and ability to generate products in high yields (up to 99%) and high enantioselectivity (up to 99% ee).

Recommanded Product: 3,5-Dimethyl-1H-pyrazole. About 3,5-Dimethyl-1H-pyrazole, If you have any questions, you can contact Kuang, YL; Wang, K; Shi, XC; Huang, XQ; Meggers, E; Wu, J or concate me.

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

In 2021.0 ORGANOMETALLICS published article about PINCER LIGAND; MOLECULAR-STRUCTURE; COPPER(I) CHLORIDE; CARBENE COMPLEXES; CRYSTAL-STRUCTURE; PI-COMPLEXES; CHEMISTRY; HEXAPHENYLCARBODIPHOSPHORANE; METALS; HALIDE in [Klein, Marius; Sundermeyer, Joerg] Philipps Univ Marburg, Fachbereich Chem & Wissensch, Zentrum Mat, D-35043 Marburg, Germany in 2021.0, Cited 67.0. The Name is 3,5-Dimethyl-1H-pyrazole. Through research, I have a further understanding and discovery of 67-51-6. Recommanded Product: 3,5-Dimethyl-1H-pyrazole

The reaction of sym-bis(P-chlorodiphenyl)-carbodiphosphorane (1) with difunctional nucleophiles leads to carbodiphosphoranes carrying two additional chelating N-donor functionalities. A proof of concept is demonstrated by the synthesis and characterization of sym-bis(3,5-dimethyl-1H-pyrazol-1-yl)-carbodiphosphorane (CDP((3,5-Me)Pz)(2), 2) and sym-bis(pyridin-2-yloxy)carbodiphosphorane (CDP(O-Py-2)(2), 3). Due to their superbasic central two-/four-electron carbon donor functionality, these neutral ligands are electronically flexible to act as neutral six-or eight-electron donors, as pincer ligand templates, or as two geminally metal bridging ligands. Their potential to form monoand dinuclear complexes involving two 6-ring or two 5-ring N,C-chelate ring motives has been explored. Complexes of 2 and 3 with fac-[M(CO)(3)] fragments (ls d(6); M = Cr, Mo, W) were used as spectroscopic probes. They reveal a strong sigma-donor and potential pi-donor ability of the central carbon donor pushing electron density for enhanced M-CO back-bonding into the metal d orbitals. DFT calculations consolidate this observation. Dinuclear and multinuclear d(10) Cu(I) complexes have been formed and structurally investigated upon treating these CDP ligands 2 and 3 with CuX (X = Cl, Br, I).

Recommanded Product: 3,5-Dimethyl-1H-pyrazole. About 3,5-Dimethyl-1H-pyrazole, If you have any questions, you can contact Klein, M; Sundermeyer, J or concate me.

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

Recently I am researching about MOLECULAR CALCULATIONS; ETHYLENE; LIGANDS; MECHANISM; ETHENE, Saw an article supported by the National Research Foundation South AfricaNational Research Foundation – South Africa [CPRR98938]; University of KwaZulu-Natal; NRF-South AfricaNational Research Foundation – South Africa [CPRR-98938]; NRF-DST (South Africa) Centre of Excellence. Product Details of 67-51-6. Published in WILEY in HOBOKEN ,Authors: Zulu, S; Alam, MG; Ojwach, SO; Akerman, MP. The CAS is 67-51-6. Through research, I have a further understanding and discovery of 3,5-Dimethyl-1H-pyrazole

Reactions of 2-[1-(3,5-dimethylpyrazol-1-yl)ethyl]pyridine (L1) and 2-[1-(3,5-diphenylpyrazol-1-yl)ethyl]pyridine (L2) with the [Pd (COD)Cl-2] or [Pd (COD)MeCl] produced palladium (II) complexes [Pd(L1)ClMe] (1), [Pd(L1)Cl-2] (C2), [Pd(L2)ClMe] (3), and [Pd(L2)Cl-2] (4) in quantitative yields. Solid state structures of complexes 1, 3 and 4 established the formation of mononuclear compounds, containing one bidentate ligand unit per metal atom, to give square planar complexes. All the other spectroscopic characterization data and elemental analyses were consistent with the observed structures. All the palladium (II) complexes 1-4 gave active catalysts in the methoxycarbonylation of 1-octenes. The catalysts demonstrated 100% chemoselectivities towards esters and favored the formation of linear isomers. Reaction conditions such as the type of phosphine derivative, acid promoter, solvent system, time, pressure and temperature have been investigated and shown to affect both the catalytic activity and regio-selectivity of the catalysts. Solid-angle modelling established the comparable steric contributions from the ligands, consistent with the similar regioselectivities of the resultant catalysts.

About 3,5-Dimethyl-1H-pyrazole, If you have any questions, you can contact Zulu, S; Alam, MG; Ojwach, SO; Akerman, MP or concate me.. Product Details of 67-51-6

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

In 2019.0 INORG CHIM ACTA published article about PHOSPHORESCENT MOLECULAR BUTTERFLIES; AGGREGATION-INDUCED EMISSION; WHITE-LIGHT EMISSION; PLATINUM(II) COMPLEXES; HETEROPOLYNUCLEAR COMPLEXES; QUANTUM YIELDS; EFFICIENT; LUMINESCENCE; HYDROGEN; AG in [Moon, Sangjoon; Horiuchi, Shinnosuke; Sakuda, Eri; Arikawa, Yasuhiro; Umakoshi, Keisuke] Nagasaki Univ, Grad Sch Engn, Div Chem & Mat Sci, Bunkyo Machi, Nagasaki 8528521, Japan; [Ito, Akitaka] Kochi Univ Technol, Grad Sch Engn, 185 Miyanokuchi, Kochi 7821502, Japan in 2019.0, Cited 48.0. The Name is 3,5-Dimethyl-1H-pyrazole. Through research, I have a further understanding and discovery of 67-51-6. Formula: C5H8N2

A butterfly-shaped dinuclear Pt(II) complex having pyridyl-NHC chelate ligands and bridging Me(2)pz ligands was synthesized. The crystal structure of the Pt-2 complex showed short intramolecular Pt center dot center dot center dot Pt distance (3.129 angstrom) and unique packing structure containing one-dimensional infinite pore that was filled with solvent molecules. The absorbance was proportional to the concentration of Pt-2 complex and no significant bands appeared even in high concentration (up to 100 mu M). The Pt-2 complex showed bluish-green emission (lambda(max) = 459 nm) in the solid state at 298 K (lambda(ex) = 330 nm). TD-DFT calculation revealed that the lowest-energy absorption bands are mainly assigned to the combination of metal-to-ligand charge transfer (MLCT) and ligand-to-ligand charge transfer (LLCT) transitions.

Formula: C5H8N2. About 3,5-Dimethyl-1H-pyrazole, If you have any questions, you can contact Moon, S; Horiuchi, S; Sakuda, E; Ito, A; Arikawa, Y; Umakoshi, K or concate me.

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

Application In Synthesis of 3,5-Dimethyl-1H-pyrazole. Authors Wimonsong, W; Yotphan, S in PERGAMON-ELSEVIER SCIENCE LTD published article about in [Yotphan, Sirilata] Mahidol Univ, Fac Sci, Dept Chem, Rama VI Rd, Bangkok 10400, Thailand; Mahidol Univ, Fac Sci, Ctr Excellence Innovat Chem, Rama VI Rd, Bangkok 10400, Thailand in 2021.0, Cited 84.0. The Name is 3,5-Dimethyl-1H-pyrazole. Through research, I have a further understanding and discovery of 67-51-6

A metal-free promoted direct oxidative C-N bond coupling of quinoxalinones and azoles for the rapid and effective synthesis of potent pharmaceutical important 3-(azol-1-yl)quinoxalin-2-one has been developed. Employing PIDA as the easily available mediator, the desired coupling products were isolated in moderate to excellent yields with a good substrate scope under operational simplicity and mild reaction conditions. Preliminary mechanistic studies suggested that a radical process is likely to be involved in the reaction. (C) 2020 Elsevier Ltd. All rights reserved.

Application In Synthesis of 3,5-Dimethyl-1H-pyrazole. About 3,5-Dimethyl-1H-pyrazole, If you have any questions, you can contact Wimonsong, W; Yotphan, S or concate me.

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

Quality Control of 3,5-Dimethyl-1H-pyrazole. Recently I am researching about PINCER LIGAND; MOLECULAR-STRUCTURE; COPPER(I) CHLORIDE; CARBENE COMPLEXES; CRYSTAL-STRUCTURE; PI-COMPLEXES; CHEMISTRY; HEXAPHENYLCARBODIPHOSPHORANE; METALS; HALIDE, Saw an article supported by the . Published in AMER CHEMICAL SOC in WASHINGTON ,Authors: Klein, M; Sundermeyer, J. The CAS is 67-51-6. Through research, I have a further understanding and discovery of 3,5-Dimethyl-1H-pyrazole

The reaction of sym-bis(P-chlorodiphenyl)-carbodiphosphorane (1) with difunctional nucleophiles leads to carbodiphosphoranes carrying two additional chelating N-donor functionalities. A proof of concept is demonstrated by the synthesis and characterization of sym-bis(3,5-dimethyl-1H-pyrazol-1-yl)-carbodiphosphorane (CDP((3,5-Me)Pz)(2), 2) and sym-bis(pyridin-2-yloxy)carbodiphosphorane (CDP(O-Py-2)(2), 3). Due to their superbasic central two-/four-electron carbon donor functionality, these neutral ligands are electronically flexible to act as neutral six-or eight-electron donors, as pincer ligand templates, or as two geminally metal bridging ligands. Their potential to form monoand dinuclear complexes involving two 6-ring or two 5-ring N,C-chelate ring motives has been explored. Complexes of 2 and 3 with fac-[M(CO)(3)] fragments (ls d(6); M = Cr, Mo, W) were used as spectroscopic probes. They reveal a strong sigma-donor and potential pi-donor ability of the central carbon donor pushing electron density for enhanced M-CO back-bonding into the metal d orbitals. DFT calculations consolidate this observation. Dinuclear and multinuclear d(10) Cu(I) complexes have been formed and structurally investigated upon treating these CDP ligands 2 and 3 with CuX (X = Cl, Br, I).

About 3,5-Dimethyl-1H-pyrazole, If you have any questions, you can contact Klein, M; Sundermeyer, J or concate me.. Quality Control of 3,5-Dimethyl-1H-pyrazole

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

Recently I am researching about ASYMMETRIC TRANSFER HYDROGENATION; PYRAZOLYL-IMIDAZOLYL LIGAND; COMPLEXES; ALCOHOLS; ESTERS; DEHYDROGENATION; MECHANISM; BEARING, Saw an article supported by the Science and Technology Department of Shaanxi Province [2018KW-032]; Key Science and Technology Innovation Team of Shaanxi Province [2017KCT-37]. Published in AMER CHEMICAL SOC in WASHINGTON ,Authors: Cao, ZQ; Qiao, H; Zeng, FL. The CAS is 67-51-6. Through research, I have a further understanding and discovery of 3,5-Dimethyl-1H-pyrazole. Product Details of 67-51-6

A new family of pyridyl-based NNN pincer ligands bearing a remote pendent OH group were developed. Considerable acceleration effects on the activity of Ru-catalyzed transfer hydrogenation of ketones were imparted by the pendent OH group, and importantly, introducing a CH2OH group to the 4′-position of the pyrazolyl moiety is an appropriate choice. The results present a general strategy for exploring bifunctional ligands to construct effective catalysts.

Product Details of 67-51-6. About 3,5-Dimethyl-1H-pyrazole, If you have any questions, you can contact Cao, ZQ; Qiao, H; Zeng, FL or concate me.

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

In 2019.0 EUR J INORG CHEM published article about RAY CRYSTAL-STRUCTURE; STRUCTURAL-CHARACTERIZATION; AGOSTIC INTERACTIONS; BOND; REACTIVITY; LIGAND; CHEMISTRY; BEHAVIOR; DESIGN; FE in [Zhao, Qianyi; Dou, Ting; Guan, Xin-Ting; Xu, Ting; Chen, Ming-Jing; Zhang, Jie; Chen, Xuenian] Henan Normal Univ, Sch Chem & Chem Engn, Minist Educ,Collaborat Innovat Ctr Henan Prov Gre, Henan Key Lab Boron Chem & Adv Energy Mat,Key Lab, Xinxiang 453007, Henan, Peoples R China; [Chen, Xuenian] Zhengzhou Univ, Coll Chem & Mol Engn, Zhengzhou 450001, Henan, Peoples R China in 2019.0, Cited 56.0. The Name is 3,5-Dimethyl-1H-pyrazole. Through research, I have a further understanding and discovery of 67-51-6. SDS of cas: 67-51-6

Three kinds of Ni-II complexes, the singly hydroxo-bridged complex 2, doubly hydroxo-bridged complexes 3a and 3b, and dinuclear Ni complex 4, were readily prepared from reactions of the salt K[(BBN)Bp (R)] {(BBN)Bp (R) = (9-BBN)bis(pyrazolyl)borate} and the NiCl2(PPh3)(2) precursor via B-N bond cleavage process in dichloromethane or toluene. Complex 2 is a rare example of partial hydrolysis of the coordinated pyrazolylborate ligand, while complexes 3a and 3b demonstrate the unreported new form that complete hydrolyses of the coordinated pyrazolylborate ligand produced. Different mechanisms for the formation of complexes 2-4 are proposed.

About 3,5-Dimethyl-1H-pyrazole, If you have any questions, you can contact Zhao, QY; Dou, T; Guan, XT; Xu, T; Chen, MJ; Zhang, J; Chen, XN or concate me.. SDS of cas: 67-51-6

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

Safety of 3,5-Dimethyl-1H-pyrazole. Recently I am researching about ACTIVATED CARBON; LIQUID; EXTRACTION; EQUILIBRIUM; ADSORPTION; STABILITY; SOLVENTS; RECOVERY; SALTS; DYES, Saw an article supported by the . Published in TAYLOR & FRANCIS INC in PHILADELPHIA ,Authors: Ozdemir, MC. The CAS is 67-51-6. Through research, I have a further understanding and discovery of 3,5-Dimethyl-1H-pyrazole

The removal of methylene blue (MB) from aqueous solution has been investigated using new tunable 1-aryl-2-alkyl-3,5-dimethylpyrazolium hexafluorophosphate salts ([Ph(R)C(R?)pz][PF6], R: -Cl, -Br, -Me, -OMe, R?: -C2H5, or -C4H9) as an extractant and methylene chloride as a diluent. The influence of p-substituent and alkyl chain length on the removal efficiency of MB from aqueous solution was investigated. The obtained results show that MB was extracted from aqueous solution with high extraction efficiency up to 99.7 % in a very short time. The salt (4a) used for extraction of MB was recovered and reused for four runs.

Safety of 3,5-Dimethyl-1H-pyrazole. About 3,5-Dimethyl-1H-pyrazole, If you have any questions, you can contact Ozdemir, MC or concate me.

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