Tag: 200-300

《Methanol-promoted borylation of arylamines: a simple and green synthetic method to arylboronic acids and arylboronates》 was published in Synlett in 2014. These research results belong to Zhao, Cong-Jun; Xue, Dong; Jia, Zhi-Hui; Wang, Chao; Xiao, Jianliang. COA of Formula: C14H21BO2 The article mentions the following:

A Sandmeyer borylation of arylamines via a SN2Ar pathway promoted by methanol with sodium nitrite and hydrochloric acid as diazotization agent has been developed, which provide a simple and green synthetic method to arylboronic acids and arylboronates. 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: 401797-00-0COA of Formula: C14H21BO2)

2-(3,4-Dimethylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane(cas: 401797-00-0) belongs to hydroxy-containing compounds. Hydroxy-containing compounds engage in intermolecular hydrogen bonding increasing the electrostatic attraction between molecules and thus to higher boiling and melting points than found for compounds that lack this functional group.COA of Formula: C14H21BO2 Organic compounds, which are often poorly soluble in water, become water-soluble when they contain two or more hydroxy groups, as illustrated by sugars and amino acid.

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《Enhanced decomposition of caffeine by water plasma combined with mist generator: Effect of operational parameter and decomposition pathway》 was written by Kim, Soon-Ho; Tanaka, Manabu; Lee, Myeong-Hoon; Watanabe, Takayuki. Related Products of 6381-59-5This research focused onwater plasma mist generator caffeine decomposition pathway operational parameter; Caffeine; Decomposition pathway; Reactive species; Thermal plasma; Water plasma. The article conveys some information:

Water plasma coupled with mist generator was introduced to perform the decomposition of caffeine (CAF) wastewater. The mist-shaped water mol. was directly used for plasma-forming gas with no addnl. gas. The influence of arc current on the decomposition of CAF was elucidated in detail. With the increase of input power from 0.8 to 1.1 kW according to arc current, the removal efficiency of total organic carbon (TOC) and CAF increased, reaching 91.1 and 99.8% at 9.5 A, resp. H2, CO, CO2, and N2 were major effluent gaseous species, of which the H2 generation was more than 40% for all conditions. The concentration of nitrate in the effluent liquids was the highest at 9.5 A due to a higher oxidation environment. The H, O, and OH as reactive species formed via the dissociation of water mols. were demonstrated, and the plasma temperatures were at over 5000 K. The detailed decomposition pathway was deduced based on eleven intermediate products identified in this process. Electron impact and hydroxyl radical were found to take leading roles in the decomposition of CAF. In the experiment, the researchers used Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate(cas: 6381-59-5Related Products of 6381-59-5)

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. Related Products of 6381-59-5 It is utilized to break up emulsion in organic synthesis as well as a common precipitant in protein crystallography.

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Recommanded Product: 4,4,5,5-Tetramethyl-2-phenyl-1,3,2-dioxaborolaneIn 2019 ,《Tuning the Optical Properties of Sulfonylaniline Derivatives: Degeneracy Breaking of Benzene Orbitals and Linkage through Nodal Planes》 was published in ChemPhysChem. The article was written by Kudo, Shoh; Hoshino, Nanami; Beppu, Teruo; Katagiri, Hiroshi. The article contains the following contents:

The orbital degeneracy of benzene rings is resolved by an asym. push-pull system in 2,6-bis(methylsulfonyl)aniline (BMeSA), in which the HOMO is located at the 4-position, while the LUMO is located at a different position and has a nodal plane through the carbon atoms at the 1- and 4-positions. Therefore, the π-extension of BMeSA at the 4-position reveals a strong overlap in the HOMO and a minimal overlap in the LUMO. Consequently, π-extended BMeSA derivatives exhibit longer absorbance and emission wavelengths in the order of the electron-donating abilities of their substituents at the 4-position, which is based on a decrease in an absolute HOMO-level-dependent HOMO-LUMO gap in accordance with the nodal arrangement. Pos. fluorescent solvatochromism with polarity-dependent decrease in fluorescent intensity was also observed The biaryls exhibited more planar geometries in the excited state than in the ground state. The charge transfer mechanism, which can be described as node-induced intramol. charge transfer (NICT), differs from the planar intramol. charge transfer (PICT) and twisted intramol. charge transfer (TICT). The experimental part of the paper was very detailed, including the reaction process of 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) also known as boronate ester, is generally used in metal-catalyzed C-C bond formation reactions like Suzuki–Miyaura reaction.Recommanded Product: 4,4,5,5-Tetramethyl-2-phenyl-1,3,2-dioxaborolane

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In 2019,Green Chemistry included an article by Li, Xing; Qi, Yue; Yue, Guozong; Wu, Qianxun; Li, Yang; Zhang, Meicheng; Guo, Xinghua; Li, Xiaofeng; Ma, Lijian; Li, Shoujian. Related Products of 34374-88-4. The article was titled 《Solvent- and catalyst-free synthesis of an azine-linked covalent organic framework and the induced tautomerization in the adsorption of U(VI) and Hg(II)》. The information in the text is summarized as follows:

A green and facile solvent- and catalyst-free method, without inert gas protection and/or mech. grinding to synthesize an azine-linked covalent organic framework (ACOF) with high efficiency, was proposed for the first time. Characterization techniques and experimentations show that the as-synthesized ACOF has high crystallinity and superior phys. and chem. stability and exhibits good adsorption performance for both radioactive heavy metal U(VI) and ordinary heavy metal Hg(II), with adsorption capacities of 169 mg g-1 for U(VI) and 175 mg g-1 for Hg(II), which makes the ACOF a potential adsorbent material for heavy metal removal and uranium recycling. Tautomerization between the enol-form and keto-form was verified in the structure of the ACOF which can be induced by the adsorption of metal ions and also affect the adsorption properties simultaneously. It was found that tautomerization from the enol-form to keto-form was promoted in the adsorption, which can be ascribed to the better coordination ability of C=O in the keto-form towards the target metal ion, while the selectivity of the ACOF towards U(VI) increases with the decreasing solution pH and reaches 96.2% when the pH is 1.5, which is due to the tautomerization from the keto-form to enol-form under acidic conditions and the consequent size-matching effect. The study on tautomerization in solid materials is rarely reported and is of great importance for deep understanding of the relationship between material structures and properties. The synthesis strategy proposed in this paper provides references for the convenient, efficient and green synthesis of COFs. The results came from multiple reactions, including the reaction of 2,4,6-Trihydroxybenzene-1,3,5-tricarbaldehyde(cas: 34374-88-4Related Products of 34374-88-4)

2,4,6-Trihydroxybenzene-1,3,5-tricarbaldehyde(cas: 34374-88-4) is a member of phloroglucinol derivatives.Related Products of 34374-88-4Phloroglucinols are known for their broad-spectrum antiviral, antibacterial, antifungal, antihelminthic, and phytotoxic activities.

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In 2018,Liu, Ning; Li, Tian-tian; Yu, Hui; Xia, Long published 《Fabrication of a Disordered Mesoporous ZnO Matrix Modified by CuO Film as High-Performance NOx Sensor》.ChemistrySelect published the findings.Related Products of 6381-59-5 The information in the text is summarized as follows:

Herein, the ZnO matrix with disordered mesoporous (disordered mesoporous ZnO, DM-ZnO) was prepared by sol-gel template method. For the first time, a layer Cu thin film was coated on the surface of the DM-ZnO matrix to increase the conductivity of matrix by chem. deposition method (CDM), an electro-deposition method (EDM) was creatively used to thicken the Cu thin film, a layer CuO thin film was coated on the surface of the DM-ZnO matrix by the high temperature calcination method, and an n-p heterojunction disordered mesoporous CuO/ZnO composite (CZC) was fabricated. The morphol., structure and gas sensing performance toward NOx of the CZC sample were characterized. The CZC sample showed the flower-like structures which were composed of petaloid particles, and the particles length was about 450 nm, the width was about 150 nm, and the disordered mesoporous distributed on the surface of the particles, the pore size was about 2.1 nm. Many sensors at high temperatures have been reported in the literature, however, sensors at high temperature had much drawbacks. The CZC sample showed the much higher gas response property to NOx at room temperature, whose response to 100 ppm NOx gas reached to 11.73, the response time was only 11.5 s, and the detection limit was only 0.5 ppm. And the prepared material had an expansive application prospect in toxic gas detection field. In the experiment, the researchers used many compounds, for example, Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate(cas: 6381-59-5Related Products of 6381-59-5)

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. Related Products of 6381-59-5 Potassium sodium tartrate tetrahydrate has been used in the preparation of Lowry reagent for the determination of microsomal protein concentration in rat hepatic microsomes by Lowry method.

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In 2018,Liu, Xun; Sun, Chunrui; Mlynarski, Scott; Morken, James P. published 《Synthesis and Stereochemical Assignment of Arenolide》.Organic Letters published the findings.Related Products of 78782-17-9 The information in the text is summarized as follows:

The convergent synthesis of candidate stereoisomers of the natural product arenolide was accomplished using recently developed catalytic boron-based reactions. Comparison of the spectral data for candidate structures with that reported for the authentic natural product revealed the likely stereostructure of the natural compound After reading the article, we found that the author used Bis[(pinacolato)boryl]methane(cas: 78782-17-9Related Products of 78782-17-9)

Bis[(pinacolato)boryl]methane(cas: 78782-17-9) belongs to organoboron compounds.Related Products of 78782-17-9 Organoboron compounds are versatile intermediates and as such are some of the most important classes of reagents in modern organic chemistry. This stems from their ease of preparation combined with their ability to undergo a broad range of chemical transformations.

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In 2014,Loh, Pui Yee; Liu, Chenmin; Sow, Chorng Haur; Chin, Wee Shong published 《Coaxial hetero-nanostructures with controllable shell thickness: a “”Pore Widening”” method》.RSC Advances published the findings.Recommanded Product: Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate The information in the text is summarized as follows:

This report presents a versatile “”Pore Widening”” method that can readily lead to arrays of multi-layered one-dimensional (1D) hetero-nanostructures. Using this simple and facile method, we demonstrate that the thickness of the shell component is controllable by the degree of “”Pore Widening””. With careful selection of materials and sequences of deposition steps, a variety of polymer-metal, metal-metal and polymer-metal-metal core-shell nanowires, as well as metal oxide nanotubes and metal oxide-metal double-walled nanotubes can be successfully achieved. This opens up a possibility to tailor new properties of 1D hetero-nanostructures through the judicious combination of different core and shell components in the nanometer size regime. The experimental process involved the reaction of 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 Potassium sodium tartrate tetrahydrate has been used in the preparation of Lowry reagent for the determination of microsomal protein concentration in rat hepatic microsomes by Lowry method.

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The author of 《Two predicted transmembrane domains exclude very long chain fatty acyl-CoAs from the active site of mouse wax synthase》 were Kawelke, Steffen; Feussner, Ivo. And the article was published in PLoS One in 2015. SDS of cas: 591-70-8 The author mentioned the following in the article:

Wax esters are used as coatings or storage lipids in all kingdoms of life. They are synthesized from a fatty alc. and an acyl-CoA by wax synthases. In order to get insights into the structure-function relationships of a wax synthase from Mus musculus, a domain swap experiment between the mouse acyl-CoA:wax alc. acyltransferase (AWAT2) and the homologous mouse acyl-CoA:diacylglycerol O-acyltransferase 2 (DGAT2) was performed. This showed that the substrate specificity of AWAT2 is partially determined by two predicted transmembrane domains near the amino terminus of AWAT2. Upon exchange of the two domains for the resp. part of DGAT2, the resulting chimeric enzyme was capable of incorporating up to 20% of very long acyl chains in the wax esters upon expression in S. cerevisiae strain H1246. The amount of very long acyl chains in wax esters synthesized by wild type AWAT2 was negligible. The effect was narrowed down to a single amino acid position within one of the predicted membrane domains, the AWAT2 N36R variant. Taken together, we provide first evidence that two predicted transmembrane domains in AWAT2 are involved in determining its acyl chain length specificity.Octadecan-9-ol(cas: 591-70-8SDS of cas: 591-70-8) was used in this study.

Octadecan-9-ol(cas: 591-70-8) belongs to hydroxy-containing compounds. Hydroxy groups participate in the dehydration reactions that link simple biological molecules into long chains. The creation of a peptide bond to link two amino acids to make a protein removes the −OH from the carboxy group of one amino acid.SDS of cas: 591-70-8

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Computed Properties of C4H12KNaO10In 2022 ,《Synthesis, structure and oxygen reduction reaction activity of a Ni-containing tartratoborate Na[Ni(py)2]2·[(C4H2O6)2B]·H2O (py = pyridine) and a copper complex borate [Cu(H2O)2(1-EI)4]·[B5O6(OH)4]2·H2O (1-EI = 1-ethylimidazole)》 appeared in Polyhedron. The author of the article were Deng, Yan-Ling; Li, Wei; Pan, Chun-Yang. The article conveys some information:

Two new metal hybrid borates, Na[Ni(py)2]2·[(C4H2O6)2B]·H2O (py = pyridine) (1) and [Cu(H2O)2(1-EI)4]·[B5O6(OH)4]2·H2O (1-EI = 1-ethylimidazole) (2), were successfully synthesized. 1 Features an interesting structure based on mixed borate-tartrate motifs. Two tartrate anions are condensed with one BO4 to form the hybrid anionic group [(C4H2O6)2B]5-. The structure of 2 is composed of [B5O6(OH)4]- clusters and [Cu(H2O)2(1-EI)4]2+ complexes, which exhibits hydrogen-bonded network formed by [B5O6(OH)4]- clusters. These compounds are further confirmed by FTIR, PXRD and UV-visible. In addition, the catalyst prepared from 2 shows excellent electrocatalytic oxygen reduction reaction (ORR) activity.Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate(cas: 6381-59-5Computed Properties of C4H12KNaO10) 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. Computed Properties of C4H12KNaO10 It is utilized to break up emulsion in organic synthesis as well as a common precipitant in protein crystallography.

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Yasuno, Yoko; Yamaguchi, Shunsuke; Karita, Yuma; Sakai, Kenta; Okamura, Hironori; Nakayama, Atsushi; Shinada, Tetsuro published their research in Heterocycles in 2021. The article was titled 《Stereoselective synthesis of (2S,3R)- and (2S,3S)-2-amino-3-(3,4-dihydroxyphenyl)-3-hydroxypropanoic acid》.Recommanded Product: 6381-59-5 The article contains the following contents:

Herein, stereoselective synthesis of (2S,3R)- and (2S,3S)-2-amino-3-(3,4-dihydroxyphenyl)-3-hydroxypropanoic acids (ADHP) equivalent I and II for the synthesis of ADHP containing natural products was reported. The synthesis was characterized by the stereocontrolled construction of the (2S,3R)- and (2S,3S)-stereocenters starting from Garner’s aldehyde as a common starting material. In the experiment, the researchers used many compounds, for example, Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate(cas: 6381-59-5Recommanded Product: 6381-59-5)

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: 6381-59-5 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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