Month: February 2022

Palombo, TM; Liebing, P; Hildebrand, SJ; Patrikus, QR; Assarsson, AP; Wang, L; Amenta, DS; Engelhardt, F; Edelmann, FT; Gilje, JW in [Palombo, Tyler M.; Hildebrand, Sara J.; Patrikus, Quentin R.; Assarsson, Anders P.; Amenta, Donna S.; Gilje, John W.] James Madison Univ, Dept Chem & Biochem, MSC 4501, Harrisonburg, VA 22807 USA; [Liebing, Phil; Wang, Ling; Engelhardt, Felix; Edelmann, Frank T.] Otto von Guericke Univ, Chem Inst, Univ Pl 2, D-39106 Magdeburg, Germany published Complexes of palladium(II) chloride with 3-(pyrazol-1-yl)propanamide (PPA) and related ligands in 2019.0, Cited 25.0. Product Details of 67-51-6. The Name is 3,5-Dimethyl-1H-pyrazole. Through research, I have a further understanding and discovery of 67-51-6.

Four new derivatives of the versatile polyfunctional ligands 3-(pyrazol-1-yl)propanamide (1, = PPA) and 3-(3,5-dimethylpyrazol-1-yl)-propanamide (2, = Me(2)PPA) have been prepared, in which one of the amide hydrogens on 1 and 2 is formally replaced by alkyl residues. X-Ray diffraction studies revealed that, in contrast to 1 and 2, the N-isopropyl substituted derivatives 3 and 4 form supramolecular hydrogen-bonded chains rather than two-dimensional arrays, and the N-(2-methyl-4-oxypentan-2-yl) (=MOP) substituted compounds 5 and 6 exist as cyclic dimers in the solid state. Reactions of PdCl2(COD) (COD = 1,5-cyclooctadiene) with 2 equiv. of the corresponding ligands 1-6 in all cases afforded trans-PdCl2(L)(2) complexes (7-12). X-ray crystal structure determinations of 8, and 10-12 revealed kappa N-monodentate coordination of the PPA-type ligands. (C) 2019 Elsevier Ltd. All rights reserved.

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

Quality Control of 3,5-Dimethyl-1H-pyrazole. In 2020.0 CHEMISTRYOPEN published article about PYRAZOLE-BASED RECEPTORS; N-ACETYLNEURAMINIC ACID; FLEXIBLE SIDE ARMS; MOLECULAR RECOGNITION; CARBOHYDRATE RECEPTORS; BINDING-PROPERTIES; FLUORENE DERIVATIVES; ARTIFICIAL RECEPTORS; BUILDING-BLOCK; ORGANIC-DYES in [Seidel, Pierre; Mazik, Monika] Tech Univ Bergakad Freiberg, Inst Organ Chem, Leipziger Str 29, D-09599 Freiberg, Germany in 2020.0, Cited 78.0. The Name is 3,5-Dimethyl-1H-pyrazole. Through research, I have a further understanding and discovery of 67-51-6.

A series of new 9,9-diethylfluorenes consisting of three side-arms each bearing a heterocyclic, bis(carboxymethyl)amino, bis(carbamoylmethyl)amino, bis(ethoxycarbonylmethyl)amino or an amino group were prepared on the basis of 2,4,7-tris(bromomethyl)-9,9-diethylfluorene. Imidazolyl, benzimidazolyl, pyrazolyl, pyrrolyl, 1,3-dioxoisoindolyl and pyridinium groups were taken into account as heterocyclic units, attached to the aromatic skeleton via -CH2-, -CH2NHCH2- or -CH2N=CH- linkers. In addition to the seventeen 2,4,7-trisubstituted 9,9-diethylfluorenes, two macrocyclic compounds were prepared on the basis of 2,7-bis(aminomethyl)-9,9-diethylfluorene. The excellent yield of the macrocyclization reaction is worth a special mention. Both the acyclic and the macrocyclic fluorene-based compounds have, among other things, the potential to act as artificial receptors for different substrates in analogy to the known receptors consisting of a benzene or biphenyl core.

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

Name: 3,5-Dimethyl-1H-pyrazole. Authors Horiuchi, S; Tanaka, S; Moon, S; Sakuda, E; Ito, A; Arikawa, Y; Umakoshi, K in AMER CHEMICAL SOC published article about in [Horiuchi, Shinnosuke; Tanaka, Seiya; Moon, Sangjoon; Sakuda, Eri; Arikawa, Yasuhiro; Umakoshi, Keisuke] Nagasaki Univ, Grad Sch Engn, Div Chem & Mat Sci, Nagasaki 8528521, Japan; [Ito, Akitaka] Kochi Univ Technol, Grad Sch Engn, Kami, Kochi 7821502, Japan in 2021.0, Cited 52.0. The Name is 3,5-Dimethyl-1H-pyrazole. Through research, I have a further understanding and discovery of 67-51-6

The synthesis and photophysical properties of the heteropolynuclear Pt-Ag complex having cyclometalated rollover bipyridine ligands (bpy*) and bridging pyrazolato ligands are reported. The Pt2Ag2 complex was synthesized by two step reactions from a Pt(II) complex precursor having the rollover bpy* ligand, [Pt(bpy*)(dmso)Cl], with 3,5-dimethylpyrazole (Me(2)pzH) and a subsequent replacement of NH protons in the Me(2)pzH moieties with the Ag(I) ion. The Pt2Ag2 complex exists as a mixture of U- and Z-shaped isomers in solution, whose structures were clearly determined by single-crystal X-ray structural analyses. NMR studies using the single crystals revealed rapid isomerization of the Pt2Ag2 complexes in solution, although the Pt2Ag2 structures were supported effectively by the multiple metal-metal interactions. Furthermore, the Pt2Ag2 framework can capture a Ag(I) ion during the U-Z isomerization to afford a Pt2Ag3 core with the formation of Pt. Ag dative bonds. The Pt2Ag3 complex showed further aggregation to form a dimer structure in the presence of coordinating solvent via the crystallization process. The formation of Pt. Ag dative bonds significantly changes the emission energy from the Pt2Ag2 complex, while the emission spectra of U- and Z-isomers of Pt2Ag2 complex almost coincide with each other and their emissive properties are very similar. The density functional theory (DFT) and time-dependent DFT (TD-DFT) calculations revealed the effects of additional Ag(I) ion on the photophysical properties of the heteropolynuclear Pt-Ag complexes bearing the rollover bpy* ligands.

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

An article Pd-Catalyzed Asymmetric Dearomatization of Indoles via Decarbonylative Heck-Type Reaction of Thioesters WOS:000606842300033 published article about THIOL ESTERS; FUKUYAMA REDUCTION; BOND FORMATION; PALLADIUM; EFFICIENT; CYCLIZATION; ARYLATION; ALDEHYDES; THIOETHERIFICATION; CONSTRUCTION in [Han, Ming-Liang; Xiong, Hai] Shenzhen Univ, Inst Adv Study, Coll Optoelect Engn, Shenzhen 518060, Peoples R China; [Han, Ming-Liang; Xiong, Hai] Shenzhen Univ, Key Lab Optoelect Devices & Syst, Coll Optoelect Engn, Minist Educ & Guangdong Prov, Shenzhen 518060, Peoples R China; [Huang, Wei; Liu, Yu-Wen; Liu, Min; Xu, Hui; Dai, Hui-Xiong] Chinese Acad Sci, Shanghai Inst Mat Med, Key Lab Receptor Res, Shanghai 201203, Peoples R China in 2021.0, Cited 81.0. Application In Synthesis of 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

We report herein a palladium-catalyzed ligand-promoted asymmetric dearomatization of indoles via the decarbonylation of thioesters and the subsequent reductive Heck reaction. This protocol provides a facile and efficient way to construct an aza-quaternary stereocenter at the C2 position of indolines. A variety of functional groups and substitutions could be well tolerated, affording the substituted indolines with high enantioselectivities.

Welcome to talk about 67-51-6, If you have any questions, you can contact Han, ML; Huang, W; Liu, YW; Liu, M; Xu, H; Xiong, H; Dai, HX or send Email.. Application In Synthesis of 3,5-Dimethyl-1H-pyrazole

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

SDS of cas: 67-51-6. In 2020.0 CHEM-EUR J published article about IDIOPATHIC PULMONARY-FIBROSIS; ARYLBORONIC ACIDS; N-ARYLATION; BETA; INDUCTION; AMINES in [Robinson, Henry; McInally, Thomas] Univ Nottingham, Sch Chem, GSK Carbon Neutral Labs Sustainable Chem, Jubilee Campus,Triumph Rd, Nottingham NG7 2TU, England; [Oatley, Steven A.; Argent, Stephen P.; Hirst, Jonathan D.; Moody, Christopher J.] Univ Nottingham, Sch Chem, Univ Pk, Nottingham NG7 2RD, England; [Rowedder, James E.; Slade, Pawel; Macdonald, Simon J. F.] GlaxoSmithKline Med Res Ctr, Med Sci & Technol, Gunnels Wood Rd, Stevenage SG1 2NY, Herts, England in 2020.0, Cited 39.0. The Name is 3,5-Dimethyl-1H-pyrazole. Through research, I have a further understanding and discovery of 67-51-6.

A late-stage functionalization of the aromatic ring in amino acid derivatives is described. The key step is a copper-catalysed diversification of a boronate ester by amination (Chan-Lam reaction) that can be carried out on a complex beta-aryl-beta-amino acid scaffold. This not only considerably extends the substrate scope of amination partners, but also delivers an array of potent and selective integrin inhibitors as potential treatment agents of idiopathic pulmonary fibrosis (IPF). This versatile chemical strategy, which is amenable to high-throughput-array protocols, allows the installation of pharmaceutically valuable heteroaromatic fragments at a late stage by direct coupling to NH heterocycles, leading to compounds with drug-like attributes. It thus constitutes a useful addition to the medicinal chemist’s repertoire.

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

Recommanded Product: 67-51-6. Recently I am researching about ACID; CATALYST; OXIDE, Saw an article supported by the Payame Noor University. Published in MAIK NAUKA/INTERPERIODICA/SPRINGER in NEW YORK ,Authors: Hassani, H; Jahani, Z. The CAS is 67-51-6. Through research, I have a further understanding and discovery of 3,5-Dimethyl-1H-pyrazole

Pyrazoles and hydrazones, as two significant kinds of potentially bioactive compounds, were produced with good to excellent yields by condensation of beta-dicarbonyl compounds with hydrazines in aqueous media in the presence of Fe3O4@CeO2 nanocomposite as an efficient heterogeneous nanocatalyst. The magnetic nanocatalyst can readily be separated using an external magnet and reused at least six times without significant loss in activity. The products were characterized by IR and H-1 and(13)C NMR spectra.

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

Recommanded Product: 3-Methyl-1-p-tolyl-5-pyrazolone. I found the field of Chemistry very interesting. Saw the article Asymmetric Organocatalysis Combined with Palladium Catalysis: Synergistic Effect on Enantioselective Mannich/alpha-Allylation Sequential Reactions of Pyrazolones in Constructing Vicinal Quaternary Stereocenters published in 2019, Reprint Addresses Huang, Y (corresponding author), Xinjiang Univ, Coll Chem & Chem Engn, Key Lab Oil & Gas Fine Chem, Minist Educ & Xinjiang Uyghur Autonomous Reg, Urumqi 830000, Xinjiang, Peoples R China.; Zhang, XL (corresponding author), Xinjiang Uygur Autonomous Reg Prod Qual Supervis, Urumqi 830000, Xinjiang, Peoples R China.. The CAS is 86-92-0. Through research, I have a further understanding and discovery of 3-Methyl-1-p-tolyl-5-pyrazolone.

In this letter, an efficient one-pot asymmetric sequential reaction is achieved by organo/transition metal relay catalysis in constructing two consecutive C-C bonds, which involves enantioselective amino squaramide catalytic Mannich-type addition of pyrazolones to isatin-derived ketimines and a subsequent palladium catalyzed diastereoselective allylic alkylation of pyrazolones with allylic acetates. An array of novel pyrazolone-aminooxindole-propylene structural motifs are obtained in a high level of yield and with excellent enantio- and diastereoselectivity (up to 95% yield, >20:1 dr, >99% ee). This methodology features the formation of vicinal quarternary carbon-stereocenters, and the second all-carbon tetrasubstituted stereogenic center is induced by joint action of the achiral palladium catalysis and the chiral environment generated from the Mannich step. Moreover, the usefulness of this methodology is highlighted by converting the allylic product into the carbonyl compound.

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Reference:
Article; Zhang, Yong; Nie, Long-Jun; Luo, Liang; Mao, Jia-Xin; Liu, Jin-Xiang; Xu, Guo-Hai; Chen, Deliang; Luo, Hai-Qing; Tetrahedron; vol. 76; 7; (2020);,
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics

Authors Kakuchi, R; Okura, Y in NATURE PUBLISHING GROUP published article about MULTICOMPONENT POLYMERIZATION; COPOLYMERS; DENDRIMERS; SYNTHESIZE; CHEMISTRY; LIBRARY in [Kakuchi, Ryohei; Okura, Yamato] Gunma Univ, Fac Sci & Technol, Div Mol Sci, 1-5-1 Tenjin, Kiryu, Gunma 3768515, Japan in 2020.0, Cited 42.0. Quality Control of 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

In this study, a novel pyrazole-carbodithioate-based chain transfer agent (CTA) featuring an aldehyde group (CTA-CHO) was designed and synthesized for RAFT polymerization. The obtained CTA-CHO was employed for the RAFT polymerization of styrene to afford well-defined polystyrenes bearing an aldehyde at their chain ends with low D values (similar to 1.1). In addition, the reactivity of the aldehyde moiety at the end of the chain was precisely evaluated, while the Passerini three-component reaction was successfully performed on the aldehyde group.

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

Safety of 1,5-Dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-carboxylic acid. Authors Zhou, L; Yan, JX; Huang, JL; Wang, HB; Wang, XG; Wang, ZJ in ELSEVIER SCI LTD published article about in [Zhou, Liang; Yan, Junxiao; Huang, Julong; Wang, Hongbo; Wang, Xingang; Wang, Zhenjun] Changan Univ, Sch Mat Sci & Engn, Xian 710064, Peoples R China; [Zhou, Liang; Wang, Hongbo; Wang, Xingang; Wang, Zhenjun] Changan Univ, Minist Educ, Engn Res Ctr Transportat Mat, Xian 710061, Peoples R China in 2021, Cited 46. The Name is 1,5-Dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-carboxylic acid. Through research, I have a further understanding and discovery of 83-10-3

Here in, the effects of FeSiAl particle size on the dielectric and microwave absorption properties of FeSiAl/Al2O3 composites were studied. FeSiAl/Al2O3 composites containing 18-25 mu m, 25-48 mu m, and 48-75 mu m FeSiAl particles were prepared by hot-pressed sintering based on uniformly mixed FeSiAl and Al2O3 powders. Results show that the real permittivity and the imaginary permittivity are significantly promoted with increasing FeSiAl particle size, which is ascribed to the enhanced interfacial polarization and conductance loss. In addition, the favorable matching impedance and suitable attenuation coefficient enabled the composite containing 25-48 mu m FeSiAl powder to show a minimum reflection loss of -34.4 dB at 11.7 GHz and an effective absorption bandwidth (<-10 dB) of 1.4 GHz in 11.0-12.4 GHz, when the thickness is 1.1 mm. By adjusting the thickness to 1.4 mm, the effective absorption bandwidth of the composite reaches a maximum value of 2.0 GHz in the 8.3-10.3 GHz range, indicating tunable, strong, and highly efficient microwave absorption performance. Welcome to talk about 83-10-3, If you have any questions, you can contact Zhou, L; Yan, JX; Huang, JL; Wang, HB; Wang, XG; Wang, ZJ or send Email.. Safety of 1,5-Dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-carboxylic acid

Reference:
Patent; Shanghai Pharmaceutical Industry Institute; China Pharmaceutical Industry Zongyuan; Li Jianqi; Huang Daowei; Wang Wenya; Zhang Zhiguo; Jiang Ling; (45 pag.)CN107286140; (2017); A;,
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics

Quality Control of 3,5-Dimethyl-1H-pyrazole. In 2020.0 MOLECULES published article about SIGMA-COMPLEX FORMATION; MEISENHEIMER COMPLEXES; HETEROAROMATIC SUBSTITUTIONS; 3+2 CYCLOADDITION; 4,6-DINITROBENZOFUROXAN; REACTIVITY; NUCLEOPHILES; 4-AZA-6-NITROBENZOFUROXAN; 4,6-DINITRO-BENZOFUROXAN; HETEROCYCLES in [Bastrakov, Maxim A.; Fedorenko, Alexey K.; Starosotnikov, Alexey M.; Kokorekin, Vladimir A.] ND Zelinsky Inst Organ Chem RAS, Leninsky Prosp 47, Moscow 119991, Russia; [Fedorenko, Alexey K.] Lomonosov Moscow State Univ, Chem Dept, Leninskie Gory 1-3, Moscow 119991, Russia; [Fedyanin, Ivan, V] AN Nesmeyanov Inst Organoelement Cpds, Vavilova Str 28, Moscow 119991, Russia in 2020.0, Cited 53.0. The Name is 3,5-Dimethyl-1H-pyrazole. Through research, I have a further understanding and discovery of 67-51-6.

A number of novel 6-R-isoxazolo[4,3-b]pyridines were synthesized and their reactions with neutral C-nucleophiles (1,3-dicarbonyl compounds, pi-excessive (het)arenes, dienes) were studied. The reaction rate was found to be dependent on the nature of the substituent 6-R. The most reactive 6-nitroisoxazolo[4,3-b]pyridines are able to add C-nucleophiles in the absence of a base under mild conditions. In addition, these compounds readily undergo [4+2]-cycloaddition reactions on aromatic bonds C=C(NO2) of the pyridine ring, thus indicating the superelectrophilic nature of 6-NO2-isoxazolo[4,3-b]pyridines.

Quality Control of 3,5-Dimethyl-1H-pyrazole. Welcome to talk about 67-51-6, If you have any questions, you can contact Bastrakov, MA; Fedorenko, AK; Starosotnikov, AM; Fedyanin, IV; Kokorekin, VA or send Email.

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