Tag: 200-300

Quality Control of rel-(1R,2S)-1,2-Diphenylethane-1,2-diol《V₂O₅@TiO₂ Catalyzed Green and Selective Oxidation of Alcohols, Alkylbenzenes and Styrenes to Carbonyls》 was published in 2021. The authors were Upadhyay, Rahul;Kumar, Shashi;Maurya, Sushil K., and the article was included in《ChemCatChem》. The author mentioned the following in the article:

The versatile application of different functional groups such as alcs. (1° and 2°), alkyl arenes, and (aryl)olefins to construct carbon-oxygen bond via oxidation is an area of intense research. Here, a reusable heterogeneous V₂O₅@TiO₂ catalyzed selective oxidation of various functionalities utilizing different mild and eco-compatible oxidants under greener reaction conditions has been reported. The method was successfully applied for the alc. oxidation, oxidative scission of styrenes, and benzylic C-H oxidation to their corresponding aldehydes and ketones. The utilization of mild and eco-friendly oxidizing reagents such as K₂S₂O₈, H₂O₂ (30% aqueous), TBHP (70% aqueous), broad substrate scope, gram-scale synthesis, and catalyst recyclability are notable features of the developed protocol. The experimental procedure involved many compounds, such as rel-(1R,2S)-1,2-Diphenylethane-1,2-diol (cas: 579-43-1) .

Desymmetrization of rel-(1R,2S)-1,2-Diphenylethane-1,2-diol(cas:579-43-1 Quality Control of rel-(1R,2S)-1,2-Diphenylethane-1,2-diol) using chiral phosphine catalyst has been reported. Conversion of meso-hydrobenzoin to trans-stillbene oxide by treatment with an aryl sulfonyl chloride and aqueous sodium hydroxide has been reported.

Reference:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Kennes-Veiga, David M.;Vogler, Bernadette;Fenner, Kathrin;Carballa, Marta;Lema, Juan M. published 《Heterotrophic enzymatic biotransformations of organic micropollutants in activated sludge》. The research results were published in《Science of the Total Environment》 in 2021.Recommanded Product: 140-66-9 The article conveys some information:

While heterotrophic microorganisms constitute the major fraction of activated sludge biomass, the role of heterotrophs in the biotransformation of organic micropollutants (OMPs) has not been fully elucidated. Yet, such knowledge is essential, particularly when conceiving novel wastewater treatment plants based on a two-stage process including an A-stage under heterotrophic conditions and a B-stage based on anammox activity. Biotransformation of OMPs in activated sludge is thought to mostly occur cometabolically thanks to the action of low specificity enzymes involved in the metabolism of the primary substrates. For a better understanding of the process, it is important to determine such enzymic activities and the underlying mechanisms involved in OMPs biotransformation. This task has proven to be difficult due to the lack of information about the enzymic processes and the complexity of the biol. systems present in activated sludge. In this paper, a continuous aerobic heterotrophic reactor following 20 OMPs at environmental concentrations was operated to (i) assess the potential of heterotrophs during the cometabolic biotransformation of OMPs, (ii) identify biotransformation reactions catalyzed by aerobic heterotrophs and (iii) predict possible heterotrophic enzymic activities responsible for such biotransformations. Contradicting previous reports on the dominant role of nitrifiers in OMPs removal during activated sludge treatment, the heterotrophic population proved its capacity to biotransform the OMPs to extents equivalent to reported values in nitrifying activated sludge plants. Besides, 12 transformation products potentially formed through the activity of several enzymes present in heterotrophs, including monooxygenases, dioxygenases, hydrolases and transferases, were identified. The experimental procedure involved many compounds, such as 4-tert-Octylphenol (cas: 140-66-9) .

4-tert-Octylphenol(cas: 140-66-9) is a common environmental pollutant showing weak estrogenic effects.Recommanded Product: 140-66-9 It has been shown to cause harm to vertebrate male reproductive systems.

Reference:
Alcohol – Wikipedia,
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Li, Wenping;Chen, Mingsong;Li, Yanchen;Sun, Jingmeng;Liu, Yi;Guo, Hongwu published 《Improving mildew resistance of soy meal by nano-Ag/TiO₂, zinc pyrithione and 4-cumylphenol》 in 2020. The article was appeared in 《Polymers (Basel, Switzerland)》. They have made some progress in their research.Formula: C15H16O The article mentions the following:

As a byproduct from the soybean oil industry, soy meal can be reproduced into value-added products to replace formaldehyde as a plywood adhesive. However, the use of soy meal has been limited by its poor antifungal and antiseptic properties. In this work, three kinds of material, namely nano-Ag/TiO₂, zinc pyrithione, and 4-cumylphenol were applied to enhance the mildew resistance of soy meal via breakdown of the cellular structure of mildew. The fungi and mold resistance, morphol., thermal properties, and mechanism of the modified soy meal were evaluated. The success of the antifungal and antiseptic properties was confirmed by Fourier transform IR spectroscopy (FTIR) and SEM. The results indicated that all three kinds of material improved the fungi and mold resistance of soy meal, and sample B, which was modified with a compound of nano-Ag/TiO₂ and zinc pyrithione, was the effective antifungal raw material for the soy-based adhesives. FTIR indicated that the great improvement of antifungal properties of soy meal modified with 4-cumylphenol might be caused by the reaction between COO- groups of soy protein. This research can help understand the effects of the chem. modification of nano-Ag/TiO₂, zinc pyrithione, and 4-cumylphenol on soy meal, and the modified soy meal exhibits potential for utilization in the plywood adhesive industry. To complete the study, the researchers used 4-(2-Phenylpropan-2-yl)phenol (cas: 599-64-4) .

4-(2-Phenylpropan-2-yl)phenol(cas:599-64-4) is a natural product found in Panax ginseng.Formula: C15H16O 4-(2-Phenylpropan-2-yl)phenol is a useful reagent for preparing and characterizing aromatic polyphosphonates as high refractive index polymers.

Reference:
Alcohol – Wikipedia,
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Recommanded Product: 140-66-9《Chemical design of hydrogels with immobilized laccase for the reduction of persistent trace compounds in wastewater》 was published in 2021. The authors were Horn, Christoph;Pospiech, Doris;Allertz, Peter J.;Mueller, Martin;Salchert, Katrin;Hommel, Rolf, and the article was included in《ACS Applied Polymer Materials》. The author mentioned the following in the article:

Hydrogels with immobilized enzymes are increasingly applied in biocatalytic industrial processes. Here, polymer hydrogels containing 2-hydroxyethyl methacrylate (HEMA), itaconic acid (ITA), (2-((2-(ethoxycarbonyl)prop-2-en-1-yl)oxy)ethyl) phosphonic acid (ECPPA), and N,N′-diethyl-1,3-bis(acrylamido)propane (BAAP) as the cross-linker are synthesized by UV-initiated radical polymerization Laccase from Trametes versicolor (LAC) is modified by reaction with itaconic anhydride (ITAn) yielding the LAC-immobilized monomer ITA-LAC with enhanced enzyme activity. ITA-LAC paves the way to an in situ method for enzyme immobilization. Hydrogels with HEMA, ECPPA, and BAAP with stepwise varied chem. composition and functionalization are prepared The influence of the composition on the morphol., the swelling behavior, the mech. stability, and the enzymic activity is studied. The polymerization is monitored by the conversion of double bonds with in situ attenuated total reflection Fourier transform IR (ATR-FTIR) spectroscopy. The polymerization of HEMA is complete after 10 min of UV exposure, whereas hydrogels of HEMA/ITA/ECPPA (85/5/10) with 5 mol % cross-linker require 30 min. These hydrogels are compared with those containing ITA-LAC instead of ITA. The covalent binding of LAC is proven by ATR-FTIR spectroscopy and results in an enhanced enzyme activity. The incorporation of ECPPA induces pH-dependent swelling with an equilibrium degree of swelling of up to 6 at pH 8. Only a weak influence of temperature on the degree of swelling is found. The morphol. strongly depends on the hydrogel composition LAC-ITA hydrogels are characterized by an open morphol. providing access to catalytic centers. The enzyme-immobilized hydrogels are used as granules as well as coatings on porous Al₂O₃ ceramic substrates as biocatalysts to convert models for organic trace compounds [bisphenol A (BPA), diclofenac, p-chlorophenol (pCP), 17α-ethinylestradiol (EED), triclosan, paracetamol, and 4-tert-octylphenol]. The highest conversion after 24 h in water is achieved for triclosan (>90%), while pCP, BPA, and EED reach a conversion between 60% and 70%. The conversions are even higher in citrate buffer.4-tert-Octylphenol (cas: 140-66-9) were involved in the experimental procedure.

4-tert-Octylphenol(cas: 140-66-9) has been used as a reference standard for the determination of the analyte in water samples using ultra-high-performance liquid chromatography/tandem mass spectrometry (UHPLC/MS/MS).Recommanded Product: 140-66-9

Reference:
Alcohol – Wikipedia,
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Hirpara, Darshna G.;Gajera, Harsukh P.;Savaliya, Disha D.;Bhadani, Rushita V. published 《Characterization and bioefficacy of green nanosilver particles derived from fungicide-tolerant Tricho-fusant for efficient biocontrol of stem rot (Sclerotium rolfsii Sacc.) in groundnut (Arachis hypogaea L.)》. The research results were published in《Journal of Microbiology (Seoul, Republic of Korea)》 in 2021.Recommanded Product: 579-43-1 The article conveys some information:

An efficient and eco-friendly bioefficacy of potent Tricho-fusant (Fu21) and its green nanosilver formulation against stem rot (Sclerotium rolfsii) in groundnut was established. Fu21 demonstrated higher in-vitro growth inhibition of pathogen with better fungicide tolerance than the parental strains. The green nanosilver particles were synthesized from the extracellular metabolites of Fu21 and characterized for shape (spherical, 59.34 nm in scanning electron microscope), purity (3.00 KeV, energy dispersive X-ray anal.), size (54.3 nm in particle size analyzer), and stability (53.7 mv, zeta). The field efficacy study exhibited that the seedling emergence was high in seeds treated with green nanosilver (min. inhibitory concentration-[MIC] 20 μg Ag/mL), and a low disease severity index of stem rot during the crop growth was followed by the live antagonist (Fu21) in addition to seed treatment with a fungicide mix under pathogen infestation. The seed quality anal. of harvested pods revealed a high oil content with balanced fatty acid composition (3.10 oleic/linoleic acid ratio) in green nanosilver treatment under pathogen infestation. The residual anal. suggested that green nanosilver applied at the MIC level as seed treatment yielded similar effects as the control for silver residue in the harvested groundnut seeds. The green nanosilver at MIC has a high pod-yield under S. rolfsii infestation, demonstrating green chem. and sustainability of the nanoproduct.rel-(1R,2S)-1,2-Diphenylethane-1,2-diol (cas: 579-43-1) were involved in the experimental procedure.

Desymmetrization of rel-(1R,2S)-1,2-Diphenylethane-1,2-diol(cas:579-43-1 Recommanded Product: 579-43-1) using chiral phosphine catalyst has been reported. Conversion of meso-hydrobenzoin to trans-stillbene oxide by treatment with an aryl sulfonyl chloride and aqueous sodium hydroxide has been reported.

Reference:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Pijovic, Milena;Manic, Nebojsa;Anicijevic, Dragana Vasic;Krstic, Aleksandar;Mitric, Miodrag;Matic, Tamara;Jankovic, Bojan published 《Simple and effective one-step production of high-quality mesoporous pyrolytic char from waste tires: Rhodamine B adsorption kinetics and density functional theory (DFT) study》. The research results were published in《Diamond and Related Materials》 in 2022.Computed Properties of C14H22O The article conveys some information:

Pyrolytic tire (PT) chars were first produced from waste car tires (WCT) through carbonization process at 800 °C, for different retention times. Then, best PT-char sample by its physicochem. properties (WCT 800(1 h)) was further tested for its ability to adsorb Rhodamine B (RhB) dye from aqueous solutions Structural characterization of synthesized material showed existence of graphene-based material, with average pore diameter of 22.8 nm and sp. surface area of 55.8 m2·g-1. Obtained carbon material meets specifications of com. carbon black (CB). The yield of 33.6% of CB recovered has been achieved. Under the optimal conditions, 99.57% of RhB was removed. Adsorption of RhB obeys pseudo second-order model and Langmuir isotherm model. DFT (the d. functional theory) was revealed that effective bonding of RhB onto WCT 800 originates from π-electron interactions with aromatic moieties and chem. (or at least the electrostatic) interactions, between pos. nitrogen and electron-rich surface groups. The experimental procedure involved many compounds, such as 4-tert-Octylphenol (cas: 140-66-9) .

4-tert-Octylphenol(cas: 140-66-9) is a common environmental pollutant showing weak estrogenic effects.Computed Properties of C14H22O It has been shown to cause harm to vertebrate male reproductive systems.

Reference:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts