Category: alcohols-buliding-blocks

Elbehery, Huda H. published the artcileCinnamon essential oil loaded β-cyclodextrin/gum Arabic nanoparticles affecting life table parameters of potato tuber moth, Phthorimaea operculella (Zeller), Quality Control of 106-25-2, the publication is Biocatalysis and Agricultural Biotechnology (2022), 102349, database is CAplus.

Plant essential oils are considered potential natural alternatives to chem. insecticides. However, increased degradation and evaporation of essential oils on exposure to environmental conditions may affect the bioavailability of their phytocompounds and reduce their activity as bio-insecticides. Therefore, this study aimed to formulate nanocapsules of cinnamon essential oil (CEO) by lyophilization technique using mixtures of β-cyclodextrin and gum Arabic (βCD + GA) inclusion as coating materials. By measuring life table parameters, the dry nano-formulations of CEO-βCD/GA were tested for insecticidal activity against the potato tuber moth Phthorimaea operculella (Zeller). Gas Chromatog.-Mass Spectrometry anal. of CEO identified cinnamaldehyde as the major volatile, followed by benzyl alc. with eugenol and nerol detected as minor constituents. CEO-βCD/GA particle sizes were 164.43 ± 1.27 nm and 151.36 ± 1.24 nm, with PDI values of 0.11 ± 0.00 and 0.25 ± 0.00 for 5.0 and 2.5% concentration, resp. High percentage of encapsulation efficiency was obtained, reaching 81.53 ± 0.39 and 87.39 ± 0.31 for CEO-βCD/GA at concentrations of 2.5 and 5.0%, resp. Higher mortality rates occurred in larvae treated with 2.5 and 5.0% CEO-βCD/GA (80, 85%, resp.) compared with 45% and 65% mortality rates recorded for 2.5 and 5.0% pure CEO, resp. When compared to pure CEO, CEO-βCD/GA had a significant neg. impact on tested population parameters of life table. Our findings revealed that nanoencapsulation of CEO by loading with βCD + GA inclusion increased its insecticidal efficacy. CEO-βCD/GA nanocapsules could be effective in P. operculella integrated pest management program.

Biocatalysis and Agricultural Biotechnology published new progress about 106-25-2. 106-25-2 belongs to alcohols-buliding-blocks, auxiliary class Natural product, name is cis-3,7-Dimethyl-2,6-Octadien-1-Ol, and the molecular formula is C10H18O, Quality Control of 106-25-2.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Wang, TsingHai published the artcileImpact of microporous structures of esterified cellulose filter papers on Co (II) rejection in cross-flow microfiltration, Formula: C8H8O3, the publication is Separation and Purification Technology (2021), 119738, database is CAplus.

The Donnan exclusion effect is a unique phenomenon in which ions are electrostatically repelled by a surface bearing an identical charge. In this study, cellulose filter papers were esterified by ten different organic acids to systematically evaluate how surface properties regulate the development of the Donnan exclusion effect and subsequent Co(II) rejection. Among the esterified cellulose filter papers, those exhibiting high Co(II) rejection (>80% in 1.0 mg/L Co(II) in 1.0 mM NaCl background electrolyte solution) were noted to simultaneously possess pos. zeta potential when in contact with Co(II), low adsorption affinity, and a relatively high microporous environment. This behavior could be explained by the Gouy-Chapman-Stern (GCS) model, in which the ion retention in the overlapped elec. double layers (EDLs) regulates the zeta potential development and consequently the Co(II) rejection. In addition to introducing reactive carbonyl and carboxyl groups, we suggest that the creation of a relatively microporous environment is essential for high Co(II) rejection. Our results are valuable for developing low-energy filtration systems for environmentally friendly water and wastewater treatment.

Separation and Purification Technology published new progress about 90-64-2. 90-64-2 belongs to alcohols-buliding-blocks, auxiliary class Carboxylic acid,Benzene,Alcohol,Natural product, name is 2-Hydroxy-2-phenylacetic acid, and the molecular formula is C6H3ClFNO2, Formula: C8H8O3.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Shinkai, Takahiro published the artcileInfrared spectroscopy and theoretical structure analyses of protonated fluoroalcohol clusters: the impact of fluorination on the hydrogen bond networks, Application In Synthesis of 2240-88-2, the publication is Physical Chemistry Chemical Physics (2022), 24(20), 12631-12644, database is CAplus and MEDLINE.

To explore the impact of fluorination on the hydrogen bond networks of protonated alkylalcs., IR spectroscopy and theor. computations of protonated 2,2,2-trifluoroethanol clusters, H⁺(TFE)_n, (n = 4-7), were performed. It has been demonstrated that the development of the hydrogen bond networks from a linear type to cyclic types occurs in this size region for the protonated alkylalc. clusters. In contrast, IR spectroscopy of H⁺(TFE)_n in the OH/CH stretch region clearly indicated that the linear type structures are held in the whole size range, irresp. of temperature of the clusters. The extensive stable isomer structure search of H⁺(TFE)_n based on our latest sampling approach supported the strong preference of the linear type hydrogen bond networks. Detailed analyses of the free OH stretching vibrational bands evidenced the intra- and intermol. OH···FC interactions in the clusters. In addition, IR spectra of protonated clusters of 2,2-difluoroethanol, 2,2-difluoropropanol, and 3,3,3-trifluoropropanol were measured for n = 4 and 5, and their spectra also indicated the effective inhibition of the cyclic hydrogen bond network formation by the fluorination.

Physical Chemistry Chemical Physics published new progress about 2240-88-2. 2240-88-2 belongs to alcohols-buliding-blocks, auxiliary class Trifluoromethyl,Fluoride,Aliphatic hydrocarbon chain,Alcohol, name is 3,3,3-Trifluoropropan-1-ol, and the molecular formula is C10H10N2, Application In Synthesis of 2240-88-2.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Wolfe, Aaron J. published the artcileInterrogating Detergent Desolvation of Nanopore-Forming Proteins by Fluorescence Polarization Spectroscopy, Safety of (2R,3S,4S,5R,6S)-2-(Hydroxymethyl)-6-(octylthio)tetrahydro-2H-pyran-3,4,5-triol, the publication is Analytical Chemistry (Washington, DC, United States) (2017), 89(15), 8013-8020, database is CAplus and MEDLINE.

Understanding how membrane proteins interact with detergents is of fundamental and practical significance in structural and chem. biol. as well as in nanobiotechnol. Current methods for inspecting protein-detergent complex (PDC) interfaces require high concentrations of protein and are of low throughput. Here, the authors describe a scalable, spectroscopic approach that uses nanomolar protein concentrations in native solutions This approach, which is based on steady-state fluorescence polarization (FP) spectroscopy, kinetically resolves the dissociation of detergents from membrane proteins and protein unfolding. For satisfactorily solubilizing detergents, at concentrations much greater than the critical micelle concentration (CMC), the fluorescence anisotropy was independent of detergent concentration In contrast, at detergent concentrations comparable with or below the CMC, the anisotropy readout underwent a time-dependent decrease, showing a specific and sensitive protein unfolding signature. Functionally reconstituted membrane proteins into a bilayer membrane confirmed predictions made by these FP-based determinations with respect to varying refolding conditions. From a practical point of view, this 96-well anal. approach will facilitate a massively parallel assessment of the PDC interfacial interactions under a fairly broad range of micellar and environmental conditions. The authors expect that these studies will potentially accelerate research in membrane proteins pertaining to their extraction, solubilization, stabilization, and crystallization, as well as reconstitution into bilayer membranes.

Analytical Chemistry (Washington, DC, United States) published new progress about 85618-21-9. 85618-21-9 belongs to alcohols-buliding-blocks, auxiliary class Tetrahydropyran,Chiral,sulfides,Alcohol, name is (2R,3S,4S,5R,6S)-2-(Hydroxymethyl)-6-(octylthio)tetrahydro-2H-pyran-3,4,5-triol, and the molecular formula is C18H24N6O6S4, Safety of (2R,3S,4S,5R,6S)-2-(Hydroxymethyl)-6-(octylthio)tetrahydro-2H-pyran-3,4,5-triol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Deng, Danfeng published the artcileNNN-Ruthenium Catalysts for the Synthesis of Pyridines, Quinolines, and Pyrroles by Acceptorless Dehydrogenative Condensation, Formula: C4H11NO, the publication is Organometallics (2018), 37(14), 2386-2394, database is CAplus.

The bidentate 6-picolinoyl 2,2′-bipyridine (bpy) ruthenium complex (6-HOC₅H₃NCO-bpy)Ru(CO)₂Cl₂ (2) transforms to a tridentate product I (3, L¹ = L² = Cl; n = 0), which further reacted with MeONa in the presence of PPh₃ to convert to two complexes, (4, 5; shown as I, 4, L¹ = L² = PPh₃, n = 1; 5, L¹ = Cl, L² = PPh₃, n = 0), via -OH deprotonation. The catalytic coupling cyclizations of secondary alcs. with amino alcs. were investigated, and complex 3 exhibited the highest activity. The coupling reactions proceeded in air with only 0.2 mol % catalyst loading and had a broad scope for the synthesis of pyridines, quinolones, and pyrroles.

Organometallics published new progress about 96-20-8. 96-20-8 belongs to alcohols-buliding-blocks, auxiliary class Amine,Aliphatic hydrocarbon chain,Alcohol, name is 2-Aminobutan-1-ol, and the molecular formula is C4H11NO, Formula: C4H11NO.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Zhou, Chen published the artcileA Sc(OTf)₃ catalyzed dehydrogenative reaction of electron-rich (hetero)aryl nucleophiles with 9-aryl-fluoren-9-ols, Safety of 9-Phenyl-9H-xanthen-9-ol, the publication is Organic & Biomolecular Chemistry (2019), 17(44), 9615-9619, database is CAplus and MEDLINE.

A highly efficient dehydrogenative reaction of a series of (hetero)aryl nucleophiles with 9-aryl-fluoren-9-ols was realized by using only 2 mol% of Sc(OTf)₃ as a catalyst. The corresponding 9,9-diarylfluorenes I [R¹ = Me, Ph, 4-ClC₆H₄, etc.; R² = H, Br; R³ = 1H-indol-3-yl, benzofuran-2-yl, 2-methyl-1H-indol-3-yl, etc.] were obtained in up to 99% yield. The protocol exhibited high selectivity, mild reaction conditions and good substrate compatibility. This protocol was further highlighted by its applications in the construction of potential electroluminescent materials.

Organic & Biomolecular Chemistry published new progress about 596-38-3. 596-38-3 belongs to alcohols-buliding-blocks, auxiliary class Other Aromatic Heterocyclic,Benzene,Alcohol, name is 9-Phenyl-9H-xanthen-9-ol, and the molecular formula is C10H14O, Safety of 9-Phenyl-9H-xanthen-9-ol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Zhao, Mingxing published the artcileHydrodeoxygenation of lignin-derived phenolics over facile prepared bimetallic RuCoN_x/NC, Application In Synthesis of 645-56-7, the publication is Fuel (2022), 121979, database is CAplus.

Cyclohexanols, promising oxygenated fuel additives and value-added chems., can be obtained by hydrodeoxygenation (HDO) of lignin-derived phenolics. Here, an N-doped bimetallic RuCoN_x/NC catalyst was facilely prepared for HDO by direct pyrolysis of chitin impregnated with precursors of Ru and Co. Characterization of RuCoN_x/NC with N₂ sorption, SEM (SEM), high-resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), XPS and NH₃ temperature-programmed desorption (NH₃-TPD) reveal that the metallic particles of electron-deficient Ru species and electron-enriched Co species were uniformly anchored on the micro-mesoporous N-doped carbon matrix with high dispersion and nano-scale size. The abundant accessible active sites and continuous spillover of H from Ru to Co make RuCoN_x/NC an excellent HDO catalyst. 4-Propylguaiacol, a typical phenolic compound from lignin degradation, was hydrodeoxygenated into 92% 4-propylcyclohexanol over RuCoN_x/NC at 210°C. With temperature increasing, propylcyclohexane became the major product, possessing 95% selectivity at 280°C after 6 h. Reusability tests show that RuCoN_x/NC can be recycled four times without the loss of conversion and initial selectivity. HDO of other phenolic compounds confirms the general applicability of RuCoN_x/NC.

Fuel published new progress about 645-56-7. 645-56-7 belongs to alcohols-buliding-blocks, auxiliary class Liquid Crystal &OLED Materials, name is 4-Propylphenol, and the molecular formula is C4H5NS2, Application In Synthesis of 645-56-7.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Liu, Caiyun published the artcileBinding Modes of Salicylic Acids to Titanium Oxide Molecular Surfaces, HPLC of Formula: 86-48-6, the publication is Chemistry – A European Journal (2020), 26(12), 2666-2674, database is CAplus and MEDLINE.

A set of titanium oxide clusters (TOCs) comprised of 4 to 16 Ti atoms are synthesized with substituted salicylates (SSAs). The interfacial coordination environment of these SSA/Ti oxide hybrids are surveyed and found to be limited to four binding modes, with the bridging chelate mode being the most common one. The SSA-functionalized TOCs show strong visible light absorption properties. The contribution of the SSAs in the frontier orbitals of the TOCs are analyzed by using TD-DFT calculations based on the mol. geometries determined by X-ray diffraction. For TOCs of relatively high O/Ti ratio, the SSAs narrow the band gap of the TOCs by contributing solely to the HOMOs. Both binding modes and locations of the SSAs are important for the roles of SSAs in changing the HOMOs and thereby the absorption onsets.

Chemistry – A European Journal published new progress about 86-48-6. 86-48-6 belongs to alcohols-buliding-blocks, auxiliary class Organic Pigment,Natural product, name is 1-Hydroxy-2-naphthoic acid, and the molecular formula is C11H8O3, HPLC of Formula: 86-48-6.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Han, Yu published the artcileNon-target, suspect and target screening of chemicals of emerging concern in landfill leachates and groundwater in Guangzhou, South China, Product Details of C12H10O4S, the publication is Science of the Total Environment (2022), 155705, database is CAplus and MEDLINE.

Landfill sites have been regarded as a significant source of chems. of emerging concern (CECs) in groundwater. However, our understanding about the compositions of CECs in landfill leachate and adjacent groundwater is still very limited. Here we investigated the CECs in landfill leachates and groundwater of Guangzhou in South China by target, suspect and non-target anal. using high-resolution mass spectrometry (HRMS). A variety of CECs (n = 242), including pharmaceuticals (n = 64), pharmaceutical intermediates (n = 18), personal care products (n = 9), food additives (n = 18), industrial chems. (n = 82, e.g., flame retardants, plasticizers, antioxidants and catalysts), pesticides (n = 26), transformation products (n = 8) and other organic compounds (n = 17) were (tentatively) identified by non-target and suspect screening. 142 CECs were quantitated with target anal., and among them 37, 24 and 27 CECs were detected resp. in the raw leachate (272-1780μg/L), treated leachate (0.25-0.81μg/L) and groundwater (0.10-53.7μg/L). The CECs in the raw leachates were efficiently removed with the removal efficiencies greater than 88.7%. Acesulfame, bisphenol F and ketoprofen were the most abundant compounds in both treated leachate and groundwater. The CECs in groundwater was found most likely to be originated from the landfill sites. Our results highlight the importance of non-target screening in identifying CECs, and reveal the contamination risk of groundwater by landfill leachate.

Science of the Total Environment published new progress about 80-09-1. 80-09-1 belongs to alcohols-buliding-blocks, auxiliary class Ploymers, name is 4,4′-Sulfonyldiphenol, and the molecular formula is C12H10O4S, Product Details of C12H10O4S.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Wang, Haiyong published the artcileSelective (ligno) cellulose hydrogenolysis to ethylene glycol and propyl monophenolics over Ni-W@C catalysts, Synthetic Route of 645-56-7, the publication is Cellulose (Dordrecht, Netherlands) (2020), 27(13), 7591-7605, database is CAplus.

The bi-functional Ni-W@C catalysts were prepared by one-pot reduction-carbonization method and used in hydrogenolysis of cellulose as well as raw lignocellulosic biomass to chems. The catalytic performance for cellulose conversion showed that it was more favorable for ethylene glycol (EG) production, obtaining the highest EG yield 60.1% over the Ni-W@C₇₀₀ catalyst. The Ni-W@C bimetallic catalysts are systematically characterized with BET, XRD, Raman, XPS, TEM techniques and experiments to probe the active catalytic sites of the catalysts. The effects of calcination temperature of Ni-W catalysts, reaction time, temperature and H₂ pressure on cellulose hydrogenolysis were investigated in detail. The Ni particles could lead to produce more W⁵⁺ active sites, which promotes the glucose retro-aldol condensation to break the target C-C bonds. Metallic Ni catalyzed C=O hydrogenation and C-C hydrogenolysis, which could also avoid the coke formation. The EG selectivity was dependent on the synergy of WO_x and Ni metal sites. In addition, this synergistic effect between the metal and WO_x could promote lignin component degradation in direct conversion of untreated raw lignocellulosic biomass, obtaining the Pr monophenolics including guaiacylpropane, syringylpropane and p-n-propylphenol with a total yield of 17.3 wt% besides EG.

Cellulose (Dordrecht, Netherlands) published new progress about 645-56-7. 645-56-7 belongs to alcohols-buliding-blocks, auxiliary class Liquid Crystal &OLED Materials, name is 4-Propylphenol, and the molecular formula is C20H17FO4S, Synthetic Route of 645-56-7.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts