Category: 538-58-9

New research progress on 538-58-9 in 2021. The appropriate choice of redox mediator can avoid electrode passivation and overpotential, which strongly inhibit the efficient activation of substrates in electrolysis. Formula: C17H14O, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 538-58-9

A new and a simple approach toward synthesis of 1,3,5-trisubstituted pyrazoles from chalcone arylhydrazones via oxidative cyclization has been achieved. 2,3-Dichloro-5,6-dicyano-1,4-benzoquinone was successfully used as an oxidizing agent to give excellent yields of pyrazoles. Taylor & Francis Group, LLC.

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Reference：
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate

New research progress on 538-58-9 in 2021. In classical electrochemical theory, both the electron transfer rate and the adsorption of reactants at the electrode control the electrochemical reaction. Safety of 1,5-Diphenylpenta-1,4-dien-3-one, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 538-58-9

A simple and convenient procedure for the deoximation with 0.5 M aqueous hypochlorite at ambient temperature is reported.Ketoximes yielded ketones quantitatively and aldoximes yielded aldehydes only at pH 5-7 or mixture of aldehydes and carboxylic acids at pH 10-11.

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Reference：
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate

New research progress on 538-58-9 in 2021. Chemo-enzymatic cascade processes are invaluable due to their ability to rapidly construct high-value products from available feedstock chemicals in a one-pot relay manner. HPLC of Formula: C17H14O, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 538-58-9

The reaction of (E)-1,3-diphenyl-3-acetoxyprop-1-ene, PhCH=CH-CH(Ph)-OAc, with palladium(0) complexes Pd0L2, generated from Pd 0(PPh3)4 or Pd0(dba)2 + 2L (L = PPh3 or L2 = dppb), gives cationic [(eta3-PhCH-CH-CHPh)PdL2]+ complexes with AcO- as the counteranion in DMF. It is established that this reaction proceeds through two successive equilibria via neutral intermediate complexes (eta2-PhCH=CH-CH(Ph)-OAc)Pd0L2, characterized from the kinetics and by UV and 31P NMR spectroscopy. The rate constants and equilibrium constants of the successive steps have been determined in DMF. They depend on the ligand and the Pd0 precursor. In all cases, for the concentration range investigated here, the complexation is considerably faster than the ionization, which is the rate-determining step of the overall process. Under similar experimental conditions, the formation of the cationic complex [(eta3-PhCH-CH-CHPh)Pd(dppb)]+ is considerably slower than the formation of the complex [(eta3- CH2-CH-CH2)Pd(dppb)]+ in DMF.

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Reference：
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate

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The (E)-dienes 1a – p were prepared in >98percent purity by dehydrative decarboxylation of the corresponding 4,5-unsaturated 3-hydroxycarboxylic acids 3 with dimethylformamide dimethylacetal (11).The (Z)-isomers 6a – m were obtained by stereouncontrolled Wittig reaction of the phosphorane 18 with the aldehydes 7 and subsequent thermolysis of the resulting (E)-/(Z)-diene mixture.Under these conditions 1 was quantitatively converted into its dimer 5, whereas 6 remained unchanged and was readily separated from 5 by vacuum distillation or column chromatography.

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Reference：
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate

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A simple and high yielding method for the synthesis of tri-substituted pyrazoles via iron(III) catalyzed aerobic oxidative aromatization of pyrazolines has been reported. The process demonstrates a variety of functional group tolerance.

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Reference：
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate

New research progress on 538-58-9 in 2021.The transformation of simple hydrocarbons into more complex and valuable products via catalytic C–H bond functionalisation has revolutionised modern synthetic chemistry. Product Details of 538-58-9, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 538-58-9

The (+)-sparteine-mediated lithiation-substitution of o-benzyl-N- pivaloylaniline with various ketones was investigated. The obtained highly enantioenriched tertiary alcohols were used for the synthesis of alkenyl-substituted products 12 and 13 as well as 3,3,4-trisubstituted tetrahydroquinoline derivatives 22-24. The reaction with alpha,beta- unsaturated ketones afforded highly enantioenriched 1,4-addition products 28-33 and provided a protocol for the asymmetric synthesis of highly substituted tetralin derivative 34. Copyright

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Reference：
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate

New research progress on 538-58-9 in 2021. Chemistry is a science major with cience and engineering. The main research directions are chemical synthesis, new energy materials. Formula: C17H14O, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 538-58-9

The reaction of 4,5-diamino-3-methyl-1-phenylpyrazole with dibenzylideneacetone and its 4,4′-derivatives has been studied; the reactions lead to aromatic 1H-2,3-dihydropyrazolo<5,4-b>-1,5-diazepine derivatives.The reaction pathway has also been identified.

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Reference：
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate

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A Pd(0)-catalyzed Hiyama coupling reaction of tetrafluoroethylene (TFE) proceeded without the use of a base to give alpha,beta,beta- trifluorostyrene derivatives. A Ni(0)-catalyzed Hiyama coupling reaction of perfluoroarenes also occurred without a base. The key intermediate in these reactions would be a transition-metal fluoride complex that is generated in situ by the oxidative addition of a C-F bond.

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Reference：
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate

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The interaction of Dibenzalacetone (DBA) with beta-Cyclodextrin (beta-CD) producing an inclusion complex was carried out by co-precipitation method. The binding constant was determined using steady state and time-resolved fluorescence spectroscopy and the results suggested that the inclusion complex preferred 1:1 stoichiometry. The complex was characterized by UV-Visible, infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC) and X-ray diffractometry (XRD). The morphological characteristics of the solid complex were analyzed by Scanning electron microscope (SEM) and Atomic force microscope (AFM). The structure of 1:1 inclusion complex of DBA with beta-CD is proposed. The Docking study reveals that this structure was found to be highly probable and energitically favorable model.

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Reference：
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate

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A practical, convenient, and safe cyano(nitro)methylation method was developed, in which cyano-aci-nitroacetate served as a synthetic equivalent of anionic nitroacetonitrile. A control of the single/double Michael additions was achieved, which enabled the synthesis of unsymmetrical double Michael adducts. Moreover, the Michael adducts can be used as precursors of pyridine and naphthyridine frameworks.

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Reference：
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate