Tag: 200-300

HPLC of Formula: 6381-59-5In 2018 ,《AgBr/diatomite for the efficient visible-light-driven photocatalytic degradation of Rhodamine B》 was published in Journal of Nanoparticle Research. The article was written by Fang, Jing; Zhao, Huamei; Liu, Qinglei; Zhang, Wang; Gu, Jiajun; Su, Yishi; Abbas, Waseem; Su, Huilan; You, Zhengwei; Zhang, Di. The article contains the following contents:

The treatment of organic pollution via photocatalysis has been investigated for a few decades. However, earth-abundant, cheap, stable, and efficient substrates are still to be developed. Here, we prepare an efficient visible-light-driven photocatalyst via the deposition of Ag nanoparticles (< 60 nm) on diatomite and the conversion of Ag to AgBr nanoparticles (< 600 nm). Exptl. results show that 95% of Rhodamine B could be removed within 20 min, and the degradation rate constant (κ) is 0.11 min-1 under 100 mW/cm2 light intensity. For comparison, AgBr/SiO2 (κ = 0.04 min-1) and commerical AgBr nanoparticles (κ = 0.05 min-1) were measured as well. The exptl. results reveal that diatomite acted more than a substrate benefiting the dispersion of AgBr nanoparticles, as well as a cooperator to help harvest visible light and adsorb dye mols., leading to the efficient visible-light-driven photocatalytic performance of AgBr/diatomite. Considering the low cost ($10 per ton) and large-scale availability of diatomite, our study provides the possibility to prepare other types of diatomite-based efficient photocatalytic composites with low-cost but excellent photocatalytic performance.Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate(cas: 6381-59-5HPLC of Formula: 6381-59-5) was used in this study.

Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate(cas: 6381-59-5) is a ferroelectric crystal with a high piezoelectric effect and electromechanical coupling coefficient. HPLC of Formula: 6381-59-5 As a Biuret reagent, it is used to measure the protein concentration. Furthermore, it is used as laxative and is also used in food industry.

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In 2022,Peng, Yujie; Li, Pengchang; Li, Hao; Xin, Lei; Ding, Jianxu; Yin, Xiaoli; Yu, Sirong published an article in Surface and Coatings Technology. The title of the article was 《Theoretical and experimental study of spontaneous adsorption-induced superhydrophobic Cu coating with hierarchical structures and its anti-scaling property》.SDS of cas: 6381-59-5 The author mentioned the following in the article:

Some exptl. studies have proven that micro/nano structured coatings achieve superhydrophobicity in air, without low-energy modification. However, it remains an issue how comprehensively explain the reason for changes in wettability. Herein, a hierarchically (nano-submicron-micro) structured Cu coating was fabricated on pipeline steel substrate by one-step electrodeposition. Notably, the superhydrophilic hierarchically structured Cu coating transforms to superhydrophobicity after stored in air for 15 days without chem. modification, with water contact angle of 151° and roll off angle of 3°. Both the microstructure and the chem. composition were characterized to understand the wettability transition mechanism. The fresh hierarchically structured Cu coating exists various defects, with high surface energy, which lead to superhydrophilicity. After the Cu coating stored in air, hydroxylation contributes to hydrocarbons adsorption, resulting in superhydrophobicity. The adsorption kinetic curve model shows that the hierarchical structure promotes hydrocarbon adsorption, which prominently reduces the transition time from superhydrophilicity to superhydrophobicity. The three-level wetting model is constructed to analyze the wetting state when water contacts the Cu coating, which verifies that it is the stable Wenzel-Cassie-Cassie wetting state. Moreover, the superhydrophobic Cu coating maintained anti-scaling property after immersing at 70°C for 4 h. The anti-scaling behavior and mechanism of the superhydrophobic Cu coating were analyzed by both nucleation and wetting theories. The Cu coating also shows excellent self-cleaning property, water droplet impact resistance, and chem. stability. The superhydrophobicity of the Cu coating also maintained in weak acid and base solutions for 12 min. This study enriches and develops the theory and the technol. in the field of wetting, and provides tech. support and theor. basis for the development of superhydrophobicity without low-energy modification.Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate(cas: 6381-59-5SDS of cas: 6381-59-5) was used in this study.

Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate(cas: 6381-59-5) is a ferroelectric crystal with a high piezoelectric effect and electromechanical coupling coefficient. SDS of cas: 6381-59-5 It is utilized to break up emulsion in organic synthesis as well as a common precipitant in protein crystallography.

Referemce:
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In 2022,Jia, Feiyun; Luo, Jiewei; Zhang, Bo published an article in Catalysis Science & Technology. The title of the article was 《Computational mechanism investigation of bismuth (BiIII/BiV) redox-catalyzed fluorination of arylboronic esters》.Recommanded Product: 24388-23-6 The author mentioned the following in the article:

Recently, the Cornella group has achieved bismuth redox-catalyzed fluorination of arylboronic esters by using heavier main group elements to simulate the transition metal catalytic cycle method. Despite the great efforts made by the exptl. group, details regarding the mechanism remained unclear. In this work, detailed DFT calculations were carried out to elucidate the principal features of this transformation. The results reveal the following: (1) the entire conversion is thermodynamically favorable, with a free energy decrease of 124.4 kcal mol-1; (2) the activator KF not only is beneficial to assisting the dissociation of BF3 on the bismuth catalyst to facilitate transmetallization, but may also be a potential promoter of BF4- dissociation in the reductive elimination step; (3) the sulfone fragment is favorable for reductive elimination; and (4) pyridyl fluoride may be responsible for the smooth progress of the oxidative addition In the part of experimental materials, we found many familiar compounds, such as 4,4,5,5-Tetramethyl-2-phenyl-1,3,2-dioxaborolane(cas: 24388-23-6Recommanded Product: 24388-23-6)

4,4,5,5-Tetramethyl-2-phenyl-1,3,2-dioxaborolane(cas: 24388-23-6) can be used as a substrate in the study of Suzuki–Miyaura coupling of various aryl iodides over SiliaCat Pd(0).Recommanded Product: 24388-23-6

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Alcohol – Wikipedia,
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Zhang, Wenzhi; Bie, Fusheng; Ma, Jie; Zhou, Fengyan; Szostak, Michal; Liu, Chengwei published an article in 2021. The article was titled 《Palladium-Catalyzed Decarbonylative Borylation of Aryl Anhydrides》, and you may find the article in Journal of Organic Chemistry.Safety of 4,4,5,5-Tetramethyl-2-phenyl-1,3,2-dioxaborolane The information in the text is summarized as follows:

A Pd-catalyzed base-free decarbonylative borylation of aryl anhydrides was developed. Catalyst system consisting of Pd(OAc)2/dppb enables readily available aryl anhydrides to be employed as electrophiles for the synthesis of versatile arylboronate esters via O-C(O) bond activation and decarbonylation. This method was characterized by an excellent functional group tolerance and broad substrate scope, using bench stable aryl anhydrides as aryl electrophiles in C-B bond formation. Mechanistic studies and functionalization of late-stage pharmaceutical mols. are disclosed. In the experiment, the researchers used 4,4,5,5-Tetramethyl-2-phenyl-1,3,2-dioxaborolane(cas: 24388-23-6Safety of 4,4,5,5-Tetramethyl-2-phenyl-1,3,2-dioxaborolane)

4,4,5,5-Tetramethyl-2-phenyl-1,3,2-dioxaborolane(cas: 24388-23-6) also known as boronate ester, is generally used in metal-catalyzed C-C bond formation reactions like Suzuki–Miyaura reaction.Safety of 4,4,5,5-Tetramethyl-2-phenyl-1,3,2-dioxaborolane

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Mu, Tong; Xu, Peng; Yu, Biao published an article in 2021. The article was titled 《Facile Synthesis of Oleanane-type Pentacyclic Triterpenoids Bearing Hydroxy Groups on D/E Rings》, and you may find the article in Asian Journal of Organic Chemistry.Recommanded Product: Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate The information in the text is summarized as follows:

Herein, the chem. synthesis of a series of oleanane-type pentacyclic triterpenoids (PTs) bearing hydroxy groups on D/E rings from the largely available oleanolic acid by transformations following site-selective C-H hydroxylation was reported. In the experimental materials used by the author, we found Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate(cas: 6381-59-5Recommanded Product: Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate)

Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate(cas: 6381-59-5) is a ferroelectric crystal with a high piezoelectric effect and electromechanical coupling coefficient. Recommanded Product: Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate It may be used as a constituent to prepare DNS (3,5- dinitrosalicylic acid) reagent and Fehling′s solution B, which are used in the determination of reducing sugar.

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Alcohol – Wikipedia,
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In 2019,Chemistry – A European Journal included an article by Kuehn, Laura; Jammal, Dominik G.; Lubitz, Katharina; Marder, Todd B.; Radius, Udo. Recommanded Product: 4,4,5,5-Tetramethyl-2-phenyl-1,3,2-dioxaborolane. The article was titled 《Stoichiometric and Catalytic Aryl-Cl Activation and Borylation using NHC-stabilized Nickel(0) Complexes》. The information in the text is summarized as follows:

NHC-nickel (NHC = N-heterocyclic carbene) complexes are efficient catalysts for the C-Cl bond borylation of aryl chlorides using NaOAc as a base and B2pin2 (pin = pinacolato) as the boron source. The catalysts [Ni2(ICy)4(μ-(η2:η2)-COD)] (1, ICy = 1,3-dicyclohexylimidazolin-2-ylidene; COD = 1,5-cyclooctadiene), [Ni(ICy)2(η2-C2H4)] (2), and [Ni(ICy)2(η2-COE)] (3, COE = cyclooctene) compare well with other nickel catalysts reported previously for aryl-chloride borylation with the advantage that no further ligands had to be added to the reaction. Borylation also proceeded with B2neop2 (neop = neopentylglycolato) as the boron source. Stoichiometric oxidative addition of different aryl chlorides to complex 1 was highly selective affording trans-[Ni(ICy)2(Cl)(Ar)] (Ar = 4-(F3C)C6H4, 11; 4-(MeO)C6H4, 12; C6H5, 13; 3,5-F2C6H3, 14). In the part of experimental materials, we found many familiar compounds, such as 4,4,5,5-Tetramethyl-2-phenyl-1,3,2-dioxaborolane(cas: 24388-23-6Recommanded Product: 4,4,5,5-Tetramethyl-2-phenyl-1,3,2-dioxaborolane)

4,4,5,5-Tetramethyl-2-phenyl-1,3,2-dioxaborolane(cas: 24388-23-6) can be used as a substrate in the study of Suzuki–Miyaura coupling of various aryl iodides over SiliaCat Pd(0).Recommanded Product: 4,4,5,5-Tetramethyl-2-phenyl-1,3,2-dioxaborolane

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

In 2018,Chang, Li; Zhang, Xiqi; Ding, Yi; Liu, Hongliang; Liu, Mingzhu; Jiang, Lei published 《Ionogel/Copper Grid Composites for High-Performance, Ultra-Stable Flexible Transparent Electrodes》.ACS Applied Materials & Interfaces published the findings.Quality Control of Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate The information in the text is summarized as follows:

Production of high-performance and stable low-cost copper (Cu)-based flexible transparent electrodes (FTEs) is urgently needed for the development of new-generation flexible optoelectronic devices, but it still remains challenging. Herein, a facile approach is developed to fabricate high-performance, ultra-stable Cu grid (CuG)-based FTEs by UV lithog.-assisted electroless deposition of patterned Cu on flexible polyethylene terephthalate (PET), which is then encapsulated by a thin poly(1-vinyl-3-ethylimidazolium bis(trifluoromethanesulfonyl)imide) (P[VEIM][NTf2]) ionogel layer to improve the mech. flexibility and stability. The as-prepared composite FTE (ionogel/CuG@ PET) exhibits a sheet resistance of 10.9 Ω sq-1 and optical transmittance of 90% at 550 nm. Introduction of the thin uniform P[VEIM][NTf2] ionogel nanofilm by virtue of the superwettability of the Cu layer endows the electrode with excellent mech. flexibility and stability. This new high-performance Cu-based FTE should be an attractive alternative to indium tin oxide for practical optoelec. applications. In the experimental materials used by the author, we found Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate(cas: 6381-59-5Quality Control of Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate)

Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate(cas: 6381-59-5) is a ferroelectric crystal with a high piezoelectric effect and electromechanical coupling coefficient. Quality Control of Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate It is utilized to break up emulsion in organic synthesis as well as a common precipitant in protein crystallography.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

The author of 《Synthesis of 3,6-epoxy[1,5]dioxocines from 2-hydroxyaromatic benzaldehydes》 were Sashidhara, Koneni V.; Kumar, Abdhesh; Rao, K. Bhaskara. And the article was published in Tetrahedron Letters in 2011. HPLC of Formula: 153759-59-2 The author mentioned the following in the article:

Convenient and facile one step synthesis of medicinally relevant 3,6-epoxy[1,5]dioxocines e. g., I from 2-hydroxyarom. benzaldehydes is described. The scope of the method was validated by examining the use of both electron rich and electron-deficient 2-hydroxyarom. benzaldehydes. After reading the article, we found that the author used 5-(tert-Butyl)-4-hydroxyisophthalaldehyde(cas: 153759-59-2HPLC of Formula: 153759-59-2)

5-(tert-Butyl)-4-hydroxyisophthalaldehyde(cas: 153759-59-2) belongs to phenols.Deprotonation of a phenol forms a corresponding negative phenolate ion or phenoxide ion, and the corresponding salts are called phenolates or phenoxides (aryloxides according to the IUPAC Gold Book).HPLC of Formula: 153759-59-2

Referemce:
Alcohol – Wikipedia,
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Sashidhara, Koneni V.; Kumar, Abdhesh; Dodda, Ranga Prasad; Kumar, Bikash published an article in Tetrahedron Letters. The title of the article was 《A new iodine catalyzed regioselective synthesis of xanthene synthons》.COA of Formula: C12H14O3 The author mentioned the following in the article:

This Letter describes the iodine catalyzed one-pot regioselective synthesis of p-condensed xanthenes as our key point of transformation, which provides an efficient access to five skeletally diverse scaffolds in excellent yields. The results came from multiple reactions, including the reaction of 5-(tert-Butyl)-4-hydroxyisophthalaldehyde(cas: 153759-59-2COA of Formula: C12H14O3)

5-(tert-Butyl)-4-hydroxyisophthalaldehyde(cas: 153759-59-2) belongs to phenols.Deprotonation of a phenol forms a corresponding negative phenolate ion or phenoxide ion, and the corresponding salts are called phenolates or phenoxides (aryloxides according to the IUPAC Gold Book).COA of Formula: C12H14O3

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Murata, Miki; Ueda, Yosuke; Hyogo, Mayu; Kohari, Yoshihito; Namikoshi, Takeshi; Watanabe, Shinji published an article in Journal of Chemical Research. The title of the article was 《Ruthenium-catalysed dehydrogenative C-H borylation of arenes with pinacolborane》.Formula: C14H21BO2 The author mentioned the following in the article:

A ruthenium complex prepared in situ from [RuCl2(p-cymene)]2 and TpMe2K [TpMe2 = hydrotris(3,5-dimethylpyrazolyl)borate] is efficient for aromatic C-H borylation with pinacolborane (4,4,5,5-tetramethyl-1,3,2-dioxaborolane). Arenes were borylated at more electron-rich positions. DFT calculations and kinetic isotope effect experiments suggest that the catalytic cycle should involve an electrophilic aromatic substitution with a borenium cation. In the part of experimental materials, we found many familiar compounds, such as 2-(3,4-Dimethylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane(cas: 401797-00-0Formula: C14H21BO2)

2-(3,4-Dimethylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane(cas: 401797-00-0) belongs to hydroxy-containing compounds. Hydroxy groups participate in the dehydration reactions that link simple biological molecules into long chains.Formula: C14H21BO2 The joining of a fatty acid to glycerol to form a triacylglycerol removes the −OH from the carboxy end of the fatty acid.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts