Month: October 2022

McKay, G.; Kelly, J. C.; McConvey, I. F. published the artcile< The adsorption of pollutants from aqueous effluents using a two-resistance mass-transfer model>, HPLC of Formula: 6054-98-4, the main research area is phenol adsorption wastewater treatment model; dye adsorption wastewater treatment model.

The adsorption of various pollutants, such as PhOH, p-chlorophenol and different dyes, on to activated C and chitin (a high mol. weight polymer obtained from crustacea) was studied in an agitated batch system at a temperature of 18 ± 2°. Two methods were used to predict concentration decay curves and correlate theor. and exptl. data. Both methods are based on external mass transfer and internal diffusion as the controlling mass-transfer resistances. The 1st method is a rapid anal. solution enabling external mass-transfer coefficients and effective diffusivities to be determined, but is restricted to the assumption that a pseudo-anal. isotherm is applicable. The 2nd method, based on a pseudo-anal. solution, is applicable to operating lines and tie lines terminating at any point on the isotherm, but requires longer computational time. Values of mass-transfer coefficients and effective diffusivities are presented for all systems.

Adsorption Science & Technology published new progress about Adsorptive wastewater treatment. 6054-98-4 belongs to class alcohols-buliding-blocks, and the molecular formula is C14H8N2Na2O6, HPLC of Formula: 6054-98-4.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Qi, Xinghao; Zheng, Tingting; Zhou, Junhao; Dong, Yanhong; Zuo, Xia; Li, Xiaoyan; Sun, Hongjian; Fuhr, Olaf; Fenske, Dieter published the artcile< Synthesis and Catalytic Activity of Iron Hydride Ligated with Bidentate N-Heterocyclic Silylenes for Hydroboration of Carbonyl Compounds>, HPLC of Formula: 403-41-8, the main research area is iron silylene amidine supported hydride complex preparation hydroboration catalyst; aldehyde ketone hydroboration pinacolboronate preparation alc iron silylene catalyst; crystal structure iron silylene amidine supported hydride complex; mol structure iron silylene amidine supported hydride complex.

We report the synthesis of a novel bidentate N-heterocyclic silylene (NHSi) ligand, N-(LSi:)-N-methyl-2-pyridinamine (1) (L = PhC(NtBu)2), and the first bischelate disilylene iron hydride I, [(Si,N)(Si,C)Fe(H)(PMe3)] (2, R = tBu), and monosilylene iron hydride, [(Si,C)Fe(H)(PMe3)3] (2′), through Csp2-H activation of the NHSi ligand. Compounds 1 and 2 were fully characterized by spectroscopic methods and single-crystal X-ray diffraction anal. D. functional theory calculations indicated the multiple-bond character of the Fe-Si bonds and the π back-donation from Fe(II) to the Si(II) center. Moreover, the strong donor character of ligand 1 enables 2 to act as an efficient catalyst for the hydroboration reaction of carbonyl compounds at room temperature Chemoselective hydroboration is attained under these conditions. This might be the first example of hydroboration of ketones and aldehydes catalyzed by a silylene hydrido iron complex. A catalytic mechanism was suggested and partially exptl. verified.

Organometallics published new progress about Aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 403-41-8 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H9FO, HPLC of Formula: 403-41-8.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Hu, Weichao; Zhao, Yuqing; Yang, Yong; Zhang, Huifang; Ding, Chunbang; Hu, Chao; Zhou, Lijun; Zhang, Zhongwei; Yuan, Shu; Chen, Yanger; Yuan, Ming published the artcile< Microwave-assisted extraction, physicochemical characterization and bioactivity of polysaccharides from Camptotheca acuminata fruits>, Product Details of C6H12O6, the main research area is Camptotheca fruit polysaacharide CAP3 antioxidant immunomodulatory activity; Antioxidant activity; Camptotheca acuminate polysaccharides; Immunomodulatory activity; Microwave-assisted extraction.

Microwave-assisted extraction of polysaccharides from Camptotheca acuminate (CAPs) was optimized by response surface methodol. The optimal parameters were as follows: microwave power, 600 W; liquid-solid ratio, 40:1 g/mL; extraction time, 14 min; and extraction temperature, 70 °C. Under these conditions, the yield of CAPs reached up to 8.61%. CAP-3, an acidic polysaccharide with a mol. weight of 121.34 kDa, was separated and purified from CAPs, which was only composed of glucose and mannose. CAP-3 exhibited strong antioxidant activity against DPPH (IC50: 0.78 mg/mL), hydroxyl radicals (IC50: 0.84 mg/mL) and also showed synergistic antioxidative effect with ascorbic acid in vitro. Meanwhile, CAP-3 could protect plasmid DNA from oxidative damage. Moreover, CAP-3 could improve immunomodulatory activity of RAW264.7 cells through promoting the phagocytosis and nitric oxide release. Therefore, CAP-3 had a strong potential in functional food, pharmaceuticals and cosmetics industries.

International Journal of Biological Macromolecules published new progress about Antioxidants. 3458-28-4 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Product Details of C6H12O6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Hu, Jingcheng; Zeng, Li; Hu, Jiayu; Ma, Rui; Liu, Xue; Jiao, Ying; He, Haoyu; Chen, Siyu; Xu, Zhexi; Wang, Hongfei; Lei, Aiwen published the artcile< Electrochemical Difunctionalization of Terminal Alkynes: Access to 1,4-Dicarbonyl Compounds>, Name: (4-Ethynylphenyl)methanol, the main research area is dicarbonyl compound preparation; terminal alkyne ketoester electrochem difunctionalization.

Herein, a feasible electrosynthesis method to access 1,4-dicarbonyl compounds such as I [R = Ph, 4-MeC6H4, 2-thienyl, etc.; R1 = Me, OMe, OEt, Oi-Pr; R2 = Me; R3 = Me; R2R3 = (CH2)3, (CH2)4, (CH2)5] had been developed from simple alkynes and 1,3-dicarbonyl compounds When the undivided cell was combined with the constant current mode, aryl alkynes containing numerous medicinal motifs with 1,3-dicarbonyl esters or ketones reacted smoothly. External oxidant and catalyst-free conditions conformed to the requirements of green synthesis.

Organic Letters published new progress about Alkynes, α- Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 10602-04-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C9H8O, Name: (4-Ethynylphenyl)methanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Chen, Jian Jeffrey; Liu, Qingyian; Yuan, Chester; Gore, Vijay; Lopez, Patricia; Ma, Vu; Amegadzie, Albert; Qian, Wenyuan; Judd, Ted C.; Minatti, Ana E.; Brown, James; Cheng, Yuan; Xue, May; Zhong, Wenge; Dineen, Thomas A.; Epstein, Oleg; Human, Jason; Kreiman, Charles; Marx, Isaac; Weiss, Matthew M.; Hitchcock, Stephen A.; Powers, Timothy S.; Chen, Kui; Wen, Paul H.; Whittington, Douglas A.; Cheng, Alan C.; Bartberger, Michael D.; Hickman, Dean; Werner, Jonathan A.; Vargas, Hugo M.; Everds, Nancy E.; Vonderfecht, Steven L.; Dunn, Robert T. II; Wood, Stephen; Fremeau, Robert T. Jr.; White, Ryan D.; Patel, Vinod F. published the artcile< Development of 2-aminooxazoline 3-azaxanthenes as orally efficacious β-secretase inhibitors for the potential treatment of Alzheimer's disease>, Computed Properties of 660867-80-1, the main research area is aminooxazoline azaxanthene derivative preparation oral beta secretase inhibitor Alzheimer’s; 3-Azaxanthene; Alzheimer’s disease (AD); Aminooxazoline; Amyloid; Aβ peptides; Xanthene; β-Secretase (BACE1).

The β-site amyloid precursor protein (APP) cleaving enzyme 1 (BACE1) is one of the most hotly pursued targets for the treatment of Alzheimer’s disease. We used a structure- and property-based drug design approach to identify 2-aminooxazoline 3-azaxanthenes as potent BACE1 inhibitors which significantly reduced CSF and brain Aβ levels in a rat pharmacodynamic model. Compared to the initial lead 2, compound 28 exhibited reduced potential for QTc prolongation in a non-human primate cardiovascular safety model.

Bioorganic & Medicinal Chemistry Letters published new progress about Alzheimer disease. 660867-80-1 belongs to class alcohols-buliding-blocks, and the molecular formula is C12H18BNO2, Computed Properties of 660867-80-1.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Chardon, Aurelien; Rouden, Jacques; Blanchet, Jerome published the artcile< Borinic Acid Mediated Hydrosilylations: Reductions of Carbonyl Derivatives>, Synthetic Route of 403-41-8, the main research area is borinic acid mediated hydrosilylation reduction ketone aldehyde imine.

4-Fluoro-2-chlorophenylborinic acid acts as a precatalyst in the presence of phenylsilane for the facile reduction of ketones, aldehydes and imines. Notably, synergistic mediation of a tertiary amine was found essential to trigger silicon to boron hydride transfer to generate a key amine-diarylhydroborane Lewis complex.

European Journal of Organic Chemistry published new progress about Aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 403-41-8 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H9FO, Synthetic Route of 403-41-8.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Gao, Heng Ya; Peng, Wen Li; Meng, Pan Pan; Feng, Xue Feng; Li, Jian Qiang; Wu, Hui Qiong; Yan, Chang Sheng; Xiong, Yang Yang; Luo, Feng published the artcile< Correction: Lanthanide separation using size-selective crystallization of Ln-MOFs [Erratum to document cited in CA167:016029]>, Application In Synthesis of 6054-98-4, the main research area is size selective crystallization separation lanthanide olsalazine MOF erratum; crystal structure lanthanide olsalazine MOF preparation erratum.

The authors regret that although the CCDC numbers are correct in the ESI document, the numbers indicated in the manuscript are incorrect. The correct CCDC numbers are included below: 1537206?1537208, 1537213?1537215, 1537218?1537221, 1537250, 1537558, 1545014.

Chemical Communications (Cambridge, United Kingdom) published new progress about Crystal structure. 6054-98-4 belongs to class alcohols-buliding-blocks, and the molecular formula is C14H8N2Na2O6, Application In Synthesis of 6054-98-4.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Chenavas, Sophie; Fiorini-Puybaret, Christel; Joulia, Philippe; Larrouquet, Camille; Waton, Hugues; Martinez, Agathe; Casabianca, Herve; Fabre, Bernard published the artcile< New formylated phloroglucinol compounds from Eucalyptus globulus foliage>, Related Products of 4396-13-8, the main research area is Eucalyptus formylated phloroglucinol compound acylphloroglucinol.

Two new acylphloroglucinols were isolated from the leaves of Eucalyptus globulus Labill and identified as macrocarpals P (1) and Q (2). Structural elucidations were carried out using conventional 1D and 2D NMR and mass spectrometry together with complementary techniques (UV and IR). Macrocarpal Q was a diastereoisomer of macrocarpal E (3), configuration of which was not precised. Simultaneous isolation of macrocarpals E and Q allowed to determine the configurations of both compounds The diformylphloroglucinol (4) was also isolated as well as already known compounds grandinol, macrocarpals D, I, L, N, O and am-1.

Phytochemistry Letters published new progress about Eucalyptus globulus. 4396-13-8 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H6O5, Related Products of 4396-13-8.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Tamoradi, Taiebeh; Ghadermazi, Mohammad; Ghorbani-Choghamarani, Arash; Molaei, Somayeh published the artcile< Synthesis and characterization of oxo-vanadium complex anchored onto SBA-15 as a green, novel and reusable nanocatalyst for the oxidation of sulfides and oxidative coupling of thiols>, Quality Control of 699-12-7, the main research area is SBA15 vanadium complex oxidation oxidative coupling catalyst.

The present work describes the synthesis of a new oxo-vanadium complex immobilized on SBA-15 nanostructure as an efficient catalyst for oxidation of sulfides and oxidative coupling of thiols. Characterization of the resultant AMPD@SBA-15 nanostructure was performed by various physico-chem. techniques such as Fourier transform IR spectroscopy, transmission and scanning electron microscopies, energy-dispersive X-ray spectroscopy, inductively coupled plasma optical emission spectroscopy, X-ray diffraction, thermal gravimetric anal., and N2 adsorption and desorption. The results of the developed procedure bring several benefits such as the use of com. available, ecol. benign, operational simplicity, and cheap and chem. inert reagents. It shows good reaction times, practicability and high efficiency, and is easily recovered from the reaction mixture by simple filtration and reused for several consecutive cycles without noticeable change in its catalytic activity. More importantly, high efficiency, simple and an inexpensive procedure, com. available materials, easy separation, and an eco-friendly procedure are the several advantages of the currently employed heterogeneous catalytic system. Graphical Abstract: [Figure not available: see fulltext.].

Research on Chemical Intermediates published new progress about Oxidation catalysts. 699-12-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H10OS, Quality Control of 699-12-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts