Category: 67-51-6

An article Microwave-assisted pyrolysis of furfural residue in a continuously operated auger reactor: Characterization and analyses of condensates and non-condensable gases WOS:000496334500093 published article about LIGNOCELLULOSIC BIOMASS PYROLYSIS; CATALYTIC PYROLYSIS; SEWAGE-SLUDGE; GASIFICATION; COAL; COMBUSTION; WOOD; MECHANISMS; PRECURSORS; CELLULOSE in [Kang, Qinhao; Mao, Xiao; Siyal, Asif Ali; Liu, Yang; Ran, Chunmei; Deng, Zeyu; Fu, Jie; Ao, Wenya; Song, Yongmeng; Dai, Jianjun] Coll Chem Engn, Beijing, Peoples R China; [Kang, Qinhao; Mao, Xiao; Siyal, Asif Ali; Liu, Yang; Ran, Chunmei; Deng, Zeyu; Fu, Jie; Ao, Wenya; Song, Yongmeng; Dai, Jianjun] Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, 15 Beisanhuan East Rd, Beijing 100029, Peoples R China in 2019.0, Cited 50.0. Recommanded Product: 67-51-6. The Name is 3,5-Dimethyl-1H-pyrazole. Through research, I have a further understanding and discovery of 67-51-6

Microwave-assisted pyrolysis of furfural residue (FR) in an auger reactor was conducted. The biochar yield decreased and non-condensable gas yield increased with increasing temperature. Condensate yield reached maximum (i.e. 21.49 wt%) at 550 degrees C. Kaolin, CaO and K2CO3 enhanced tar secondary reactions, reduced the yield and O/C ratio of bio-oil, improved GC-MS areas of phenolic compounds to 76.25%, 89.28% and 93.1%, respectively. All additives improved yields of H-2 and CH4, while CaO reduced CO2. With increasing temperature, relative proportion (RP) of HCN/NH3 reached up to 13.67, while RP of H2S and chlorine in volatiles increased from 1.17%, 5.97% to 2.75%, 9.00%, respectively. Ammonia nitrogen in volatiles increased to 6.94% by K2CO3. Kaolin improved RP of HCN from 0.11% to 5.47%, while K2CO3 eliminated HCN. H2S increased with kaolin addition and decreased with CaO and K2CO3. Electricity consumption of MWAP varied from 0.5 to 3.78 (kWh/kg FR) depending on temperatures and additives. (C) 2019 Elsevier Ltd. All rights reserved.

About 3,5-Dimethyl-1H-pyrazole, If you have any questions, you can contact Kang, QH; Mao, X; Siyal, AA; Liu, Y; Ran, CM; Deng, ZY; Fu, J; Ao, WY; Song, YM; Dai, JJ or concate me.. Recommanded Product: 67-51-6

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

Herrera-Castro, F; Torres, LA in [Herrera-Castro, Filiberto; Alfonso Torres, Luis] Ctr Invest & Estudios Avanzados, Dept Quim, Av IPN 2508, Ciudad De Mexico 07360, Mexico published Study of the solvation process of some pyrazole derivatives in three different solvents by solution calorimetry and IR spectroscopy: Unravelling solute-solvent interactions in 2020.0, Cited 20.0. Computed Properties of C5H8N2. The Name is 3,5-Dimethyl-1H-pyrazole. Through research, I have a further understanding and discovery of 67-51-6.

The study of the relationship between intermolecular interactions present in the solvation process and the magnitude of thermodynamic properties is extended from imidazole to pyrazole derivatives. The enthalpies of solution of pyrazole, 3,5-dimethylpyrazole and 3,4,5-trimethylpyrazole were calorimetrically determined in the solvents water, methanol and acetonitrile. The enthalpy of solution values for the three compounds in the three solvents are endothermic and spontaneous with an increase in entropy. As in the case with imidazole derivatives, the formation of a solution of pyrazole derivatives creates liquids that are more structured thermodynamically. The enthalpy of sublimation for 3,4,5-trimethylpyrazole, which is not available in the literature, was determined by the Knudsen effusion method. The combination of these thermodynamic properties has allowed the corresponding enthalpies of solvation to be obtained for the three pyrazole derivatives in the three selected solvents. With the use of the Pierotti equations and the enthalpies of solvation, the enthalpies of cavity formation were calculated along with the corresponding solute-solvent enthalpies of interaction. The infrared spectra and molecular volumes, as estimated through the electronic density, were used to obtain molecular insights into the solvation sensible sites within the studied solute molecules. The discussion of the solvation process and enthalpies of interaction of the pyrazole derivatives is based on the molecular structural features of solutes, specific intermolecular interactions and protic or aprotic nature of the solvents. The use of any empirical parameters in the discussion of the results was avoided. (C) 2020 Elsevier B.V. All rights reserved.

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

An article 1,6-Aza-Michael addition of para-quinone methides with N-heterocycles catalyzed by Zn(OTf)(2): A regioselective approach to N-diarylmethyl-substituted heterocycles WOS:000546923400005 published article about ASYMMETRIC 1,6-CONJUGATE ADDITION; AZA-MICHAEL ADDITION; STEREOSELECTIVE-SYNTHESIS; COUPLING REACTIONS; EASY ACCESS; CARBAZOLES; 1,6-HYDROPHOSPHONYLATION; ADDITION/AROMATIZATION; 1,6-ADDITION; ALKYLATION in [Guin, Soumitra; Saha, Hemonta K.; Patel, Ashvani K.; Gudimella, Santosh K.; Biswas, Subhankar; Samanta, Sampak] Indian Inst Technol Indore, Discipline Chem, Simrol 453552, Madhya Pradesh, India in 2020.0, Cited 77.0. SDS of cas: 67-51-6. The Name is 3,5-Dimethyl-1H-pyrazole. Through research, I have a further understanding and discovery of 67-51-6

An efficient Zn(OTf)(2)-catalyzed regioselective C-N bond making reaction between a bunch of aryl/heteroaryl-substituted para-quinone methides as ideal 1,6-acceptors and various aromatic/non-aromatic aza-heterocycles bearing N-H moiety namely carbazoles, pyrazoles, indazole, benzotriazole and saccharin is reported. This 1,6-aza-Michael technique delivers predominantly NI-diarylmethyl-substituted heterocyclic scaffolds bearing a valuable phenolic moiety in good to high yields with an excellent regioselectivity. Furthermore, this LUMO lowering catalytic system allows different kinds of useful functionalities and excels with broad substrates under mild conditions. Importantly, our control experiments suggested that N2-adducts of indazole, benzotriazole and 3-methyl pyrazole as minor isomers were progressively converted into N1-adducts during the reaction via a retro-aza-Michael reaction triggered by Zn(OTf)(2), offering excellent regioselectivities of the products. (C) 2020 Elsevier Ltd. All rights reserved.

SDS of cas: 67-51-6. About 3,5-Dimethyl-1H-pyrazole, If you have any questions, you can contact Guin, S; Saha, HK; Patel, AK; Gudimella, SK; Biswas, S; Samanta, S or concate me.

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

Quality Control of 3,5-Dimethyl-1H-pyrazole. Recently I am researching about RHODIUM; LIGANDS; ALKENES, Saw an article supported by the . Published in SPRINGER in DORDRECHT ,Authors: Gamede, NV; Kapfunde, TA; Ocansey, E; Ngumbu, DM; Darkwa, J; Makhubela, BCE. The CAS is 67-51-6. Through research, I have a further understanding and discovery of 3,5-Dimethyl-1H-pyrazole

The industrial process of hydroformylation or the oxo process has been used for many years in the production of aldehydes from alkenes. Different metals have been used as efficient catalysts for hydroformylation, in which linear and branched aldehydes are the products obtained; therefore, the development of new catalysts for hydroformylation with high selectivity to aldehydes is important. Rhodium complexes 6-9 were synthesized using [RhCl(CO)(2)](2), or [RhCl(COD)](2), with either pyrazolylpyridyl N ‘ N ‘ N pincer ligands or a pyrazolylpyridyl N ‘ N ligand. These complexes were then evaluated as catalyst precursors in the hydroformylation reaction using a variety of alkenes. The catalysts all showed activity in hydroformylation but the most active catalyst was methyl-substituted pyrazolyl-rhodium complex 7 following optimization of temperature, syngas pressure and amount of catalyst. Other olefinic substrates were used for hydroformylation in the presence of 7 under the optimum hydroformylation conditions. Undecene and dodecene as substrates only showed minimal formation of aldehydes with predominantly isomerization of the alkene being observed.

About 3,5-Dimethyl-1H-pyrazole, If you have any questions, you can contact Gamede, NV; Kapfunde, TA; Ocansey, E; Ngumbu, DM; Darkwa, J; Makhubela, BCE or concate me.. Quality Control of 3,5-Dimethyl-1H-pyrazole

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

An article A nano-molar level fluorogenic and oxidation state-selective chromogenic dual reversible chemosensor for multiple targets, Cu2+/S(2-)and Fe3+/F(-)ions WOS:000569368500042 published article about IRON REGULATORY PROTEINS; COLORIMETRIC CHEMOSENSOR; FLUORESCENT CHEMOSENSOR; CU2+; SENSORS; COPPER; FE3+; FLUORIDE; DESIGN; LIGAND in [Hossain, Sayed Muktar; Dam, Gourab Kumar; Mishra, Sagarika; Singh, Akhilesh Kumar] Indian Inst Technol Bhubaneswar, Sch Basic Sci, Bhubaneswar 752050, India in 2020.0, Cited 59.0. The Name is 3,5-Dimethyl-1H-pyrazole. Through research, I have a further understanding and discovery of 67-51-6. Quality Control of 3,5-Dimethyl-1H-pyrazole

A pyridine-pyrazole-pyrene-based chemosensor,L, has been developed and fully characterized by all the possible techniques (ESI-MS, NMR, CHN, IRetc.). It has been found that the probe,L, selectively recognizes Cu(2+)ion and Fe(3+)ion fluorogenically and chromogenically, respectively, among a wide range of competitive metal ions. It has been demonstrated that the probe is not only metal ion-selective but also oxidation state-selective for Fe(3+)ions. The metal complexes (Cu and Fe) of the ligand were synthesized and characterized using different spectroscopic techniques and they were also characterised X-ray structurally as well, which confirm the stoichiometry (L : M = 2 : 1). The sensitivities for the fluorogenic sensing of Cu(2+)ions and chromogenic sensing of Fe(3+)have been found to be as low as nano molar level detection (69 nM and 27 nM, respectively). Further studies reveal that the Cu(II)L(2)complex can act as a turn-off fluorescent chemosensor for S(2-)ions and Fe(III)L(2)can act as a reversible turn-off colorimetric chemosensor for F(-)ions over other anions.

About 3,5-Dimethyl-1H-pyrazole, If you have any questions, you can contact Hossain, SM; Dam, GK; Mishra, S; Singh, AK or concate me.. Quality Control of 3,5-Dimethyl-1H-pyrazole

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

Category: pyrazoles-derivatives. Berdiell, IC; Farmiloe, SE; Kulmaczewski, R; Halcrow, MA in [Berdiell, Izar Capel; Farmiloe, Sarah E.; Kulmaczewski, Rafal; Halcrow, Malcolm A.] Univ Leeds, Sch Chem, Woodhouse Lane, Leeds LS2 9JT, W Yorkshire, England published Molecular squares, coordination polymers and mononuclear complexes supported by 2,4-dipyrazolyl-6H-1,3,5-triazine and 4,6-dipyrazolylpyrimidine ligands in 2019.0, Cited 83.0. The Name is 3,5-Dimethyl-1H-pyrazole. Through research, I have a further understanding and discovery of 67-51-6.

The Fe[BF4](2) complex of 2,4-di(pyrazol-1-yl)-6H-1,3,5-triazine (L-1) is a high-spin molecular square, [{Fe(L-1)}(4)(mu-L-1)(4)][BF4](8), whose crystals also contain the unusual HPzBF(3) (HPz = pyrazole) adduct. Three other 2,4-di(pyrazol-1-yl)-6H-1,3,5-triazine derivatives with different pyrazole substituents (L-2-L-4) are unstable in the presence of first row transition ions, but form mononuclear, polymeric or molecular square complexes with silver(i). Most of these compounds involve bis-bidentate di(pyrazolyl)triazine coordination, which is unusual for that class of ligand, and the molecular squares encapsulate one or two BF4-, ClO4- or SbF6- ions through combinations of anion pi, AgX and/or C-HX (X = O or F) interactions. Treatment of Fe[NCS](2) or Fe[NCSe](2) with 4,6-di(pyrazol-1-yl)-2H-pyrimidine (L-5) or its 2-methyl and 2-amino derivatives (L-6 and L-7) yields mononuclear [Fe(NCE)(2)L-2] and/or the 1D coordination polymers catena-[Fe(NCE)(2)(mu-L)] (E = S or Se, L = L-5-L-7). Alcohol solvates of isomorphous [Fe(NCS)(2)L-2] and [Fe(NCSe)(2)L-2] compounds show different patterns of intermolecular hydrogen bonding, reflecting the acceptor properties of the anion ligands. These iron compounds are all high-spin, although annealing solvated crystals of [Fe(NCSe)(2)(L-5)(2)] affords a new phase exhibiting an abrupt, low-temperature spin transition. Catena-[Fe(H2O)(2)(mu-L-5)][ClO4](2) is a coordination polymer of alternating cis and trans iron centres.

Category: pyrazoles-derivatives. About 3,5-Dimethyl-1H-pyrazole, If you have any questions, you can contact Berdiell, IC; Farmiloe, SE; Kulmaczewski, R; Halcrow, MA or concate me.

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

Quality Control of 3,5-Dimethyl-1H-pyrazole. Recently I am researching about RAY CRYSTAL-STRUCTURE; STRUCTURAL-CHARACTERIZATION; AGOSTIC INTERACTIONS; BOND; REACTIVITY; LIGAND; CHEMISTRY; BEHAVIOR; DESIGN; FE, Saw an article supported by the National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [21501048, 21503070, 21571052, 21771057]; Key Science and Technology Project of Henan Province [182102210377]; Ministry of Education of the People’s Republic of ChinaMinistry of Education, China; 111 ProjectMinistry of Education, China – 111 Project [D17007]; Henan Center for Outstanding Overseas Scientists [GZS2018003]. Published in WILEY-V C H VERLAG GMBH in WEINHEIM ,Authors: Zhao, QY; Dou, T; Guan, XT; Xu, T; Chen, MJ; Zhang, J; Chen, XN. The CAS is 67-51-6. Through research, I have a further understanding and discovery of 3,5-Dimethyl-1H-pyrazole

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.. Quality Control of 3,5-Dimethyl-1H-pyrazole

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

An article Blocked isocyanates as alternative curing agents for epoxy-polyurethane resins based on modified vegetable oils WOS:000469937900006 published article about MODIFIED NATURAL OILS; THERMAL-BEHAVIOR; CASTOR-OIL in [Sienkiewicz, A.; Czub, P.] Cracow Univ Technol, Fac Chem Engn & Technol, Dept Chem & Technol Polymers, Warszawska Str 24, Krakow, Poland in 2019.0, Cited 29.0. SDS of cas: 67-51-6. The Name is 3,5-Dimethyl-1H-pyrazole. Through research, I have a further understanding and discovery of 67-51-6

Presented research shows the results of a study on the synthesis and mechanical properties of materials obtained by crosslinking polyaddition bio-products with blocked isocyanate based on toluene diisocyanate (TDI) as curing agent. Bio-resins, polyaddition product of epoxidized soybean oil and bisphenol A or hydroxylated soybean oil and low molecular weight epoxy resin, were synthesized via modern and pro-ecological modification of the synthesis of epoxies, namely, the epoxy fusion process. The obtained polyaddition product contains free epoxy and hydroxyl groups, which are suitable for the curing purposes. Material cured with Desmodur BL 1265/MPA/X in the presence of organometallic or amine catalyst (respectively: Dabco T9 and Dabco 33-LV) is characterized by mechanical properties better than the composition crosslinked without the catalyst. Additionally, there is a possibility of the synthesis of two-layer materials by chemical bonding of two different compositions via the previously unused oxirane groups of the cured ESBO_BPA or SMEG_EPR products.

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

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.

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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