Category: 584-02-1

Hong, Yubiao published the artcileChiral-at-Iron Catalyst: Expanding the Chemical Space for Asymmetric Earth-Abundant Metal Catalysis, Related Products of alcohols-buliding-blocks, the main research area is chiral iron catalyst chem space asym earth abundant metal; enantioselective Cannizzaro reaction; asym Nazarov cyclization.

A new class of chiral iron catalysts is introduced that contains exclusively achiral ligands with the overall chirality being the result of a stereogenic iron center. Specifically, iron(II) is cis-coordinated to two N-(2-pyridyl)-substituted N-heterocyclic carbene (PyNHC) ligands in a bidentate fashion in addition to two monodentate acetonitriles, and the dicationic complex is complemented by two hexafluorophosphate ions. Depending on the helical twist of the PyNHC ligands, the metal center adopts either a Λ or Δ absolute configuration. Importantly, the two PyNHC ligands are constitutionally and configurationally inert, while the two acetonitriles are labile and allow asym. transition metal catalysis. This is demonstrated with an enantioselective Cannizzaro reaction (96% yield, 88% ee) and an asym. Nazarov cyclization (89% yield, >20:1 dr, 83% ee).

Journal of the American Chemical Society published new progress about Bond angle. 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, Related Products of alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Hoffmann, Jessica Fernanda published the artcileVolatile compounds profile of Brazilian aromatic brown rice genotypes and its cooking quality characteristics, Related Products of alcohols-buliding-blocks, the main research area is volatile compound brown rice cooking.

Background and objectives : This study evaluated the volatile profile by solid-phase microextraction (SPME)-gas chromatog./mass spectrometry (GC/MS) and the cooking quality properties of seven aromatic and one non-aromatic rice genotypes grown in Brazil. Findings : Twenty-three volatile compounds were identified by SPME-GC/MS anal. PCA and PLS-DA allowed the separation of aromatic and non-aromatic genotypes. PLS-DA anal. revealed six compounds as discriminating between groups: 2-acetyl-1-pyrroline (2-AP), decanal, 2-hexanone, 2-pentylfuran, 1-hexanol, and hexanal. 2-AP was detected only in aromatic genotypes, and the content varied from 0.21 to 0.57 μg/g. Cooking time changed from 23.5 to 38.3 min in the new aromatic genotypes while hardness changed from 52.7 to 100.7 N. Conclusions : Our study revealed six volatile compounds as discriminants between aromatic and non-aromatic genotypes grown in Brazil. 2-AP was identified only in aromatic genotypes. Genotype BR5 exhibited the best general performance since their volatile compounds results indicate less off-flavors (hexanal), higher 2-AP content, and similar cooking time and hardness to IRG and JAS. Significance and novelty : Results may help rice chain in selecting Brazilian genotypes of aromatic rice to be grown in Brazil and distributed worldwide. Also, this work may serve as a starting point for future work on aromatic rice authenticity.

Cereal Chemistry published new progress about Brown rice. 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, Related Products of alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Reade, Sophie published the artcilePotential role of fecal volatile organic compounds as biomarkers of chemically induced intestinal inflammation in mice, COA of Formula: C5H12O, the main research area is acute chronic colitis intestinal inflammation feces VOC biomarker; VOCs; colitis; inflammatory bowel disease.

Metabolomics studies have the potential to discover biomarkers. Fecal volatile organic compounds (VOCs) have been found to differ in patients with inflammatory bowel disease and irritable bowel syndrome. Murine models of colitis offer an alternative to human studies in which diet can be controlled. We aimed to investigate fecal VOCs from mice in which acute and chronic colitis was induced. Groups of adult C57BL/6 mice underwent treatment with oral dextran sulfate sodium to induce colitis. Control mice received no treatment or had acute osmotic diarrhea induced with magnesium sulfate. Colitis was assessed clin. and by histol. Samples of feces and/or colon contents were collected and volatile compounds determined by solid phase microextraction-GC-MS. Statistics were performed using metabolomics tools. Acute colitis was associated with an increase in aldehydes and chronic colitis with one specific ketone. Osmotic diarrhea was associated with a significant reduction in VOCs, especially alcs. We provide evidence that the identification of disease-associated VOC concentration ranges, combined with specific marker compounds, would potentially increase the likelihood of finding an inflammatory bowel disease-specific fecal VOC marker profile.

FASEB Journal published new progress about Biomarkers. 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, COA of Formula: C5H12O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Vervald, Alexey published the artcileDifference in deprotonation for oxygen-containing groups on sp2 and sp3 carbons, Synthetic Route of 584-02-1, the main research area is phenol benzoic acid nanodiamond deprotonation zeta potential.

Does the hybridization of the surface of carbon nanoparticles (CNPs) affect the properties of the surface carboxyl and hydroxyl groups and the features of their deprotonation in water. To answer these questions in this work the structures of graphite-and diamond-like carbon cells with OH and COOH groups optimized by the DFT method were studied. It was found that in the same suspensions the OH and COOH groups deprotonate easier being on carbon with sp2 hybridization rather than sp3. Theor. estimates have shown that in aqueous suspensions of CNPs, “”isolated”” carboxyl COOH groups on sp2/sp3 hybridized carbon sites have pKa in the ranges of 3.5-4.5/4.5-5, and the hydroxyl OH groups – in the ranges of 8.5-10/15-18, resp. The conclusions made on the basis of theor. calculations about the features of deprotonation of surface groups of CNPs are exptl. confirmed by the changes of the zeta-potentials of oxidized detonation nanodiamonds with the change of the pH of the environment.

Fullerenes, Nanotubes, and Carbon Nanostructures published new progress about Aggregates. 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, Synthetic Route of 584-02-1.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Lu, Zeye published the artcileHighly efficient NHC-iridium-catalyzed β-methylation of alcohols with methanol at low catalyst loadings, Formula: C5H12O, the main research area is alc methanol iridium catalyst alkylation regioselective; alkyl alc preparation.

A highly efficient β-methylation of primary and secondary alcs. with methanol was achieved by using bis-N-heterocyclic carbene iridium (bis-NHC-Ir) complexes. Broad substrate scope and up to quant. yields were achieved at low catalyst loadings with only hydrogen and water as byproducts. The protocol was readily extended to the β-alkylation of alcs. with several primary alcs. Control experiments, along with DFT calculations and crystallog. studies, revealed that the ligand effect was critical to their excellent catalytic performance, shedded light on more challenging Guerbet reactions with simple alcs.

Science China: Chemistry published new progress about Alkylation. 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, Formula: C5H12O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Dambatta, Mubarak B. published the artcileTransition metal free α-C-alkylation of ketones using secondary alcohols, Application In Synthesis of 584-02-1, the main research area is aryl ketone preparation; ketone secondary alc alkylation.

A base-mediated α-C-alkylation of aryl Me ketones with secondary alcs. was developed for the synthesis of aryl ketones ArC(O)CH2CH(R1)(R2) [R1 = Me, Et; R2 = Me, Et, Ph, etc.; R1R2 = (CH2)4, (CH2)5, (CH2)6, etc.; Ar = 2,4,6-(Me)3C6H2, 2,3,5,6-(Me)4C6H, 2,3,4,5,6-pentamethylphenyl, etc.]. This transition metal free approach employed KOt-Bu as the base and exhibited a broad scope, allowing a range of commodity aliphatic secondary alcs. Aryl Me ketones underwent selective mono-α-C-alkylation in high isolated yields (23 examples, 65% average yield).

Tetrahedron published new progress about Alkylation. 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, Application In Synthesis of 584-02-1.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Wang, X. published the artcileIsolation and characterization of endophytic bacteria for controlling root rot disease of Chinese jujube, Application In Synthesis of 584-02-1, the main research area is Ziziphus Fusarium endophytic bacteria root rot disease; Brevibacterium halotolerans ; Fusarium oxysporum ; Chinese jujube; biological control; endophytic bacteria; root rot disease.

Fusarium oxysporum is the primary pathogen causing root rot disease that severely affects cultivation of jujube fruit in the Xinjiang province of China. The aim of this study was to identify endophytic bacteria in healthy jujube organs that could effectively suppress F. oxysporum growth. Different plant organs (leaves, twigs and roots) were collected from healthy Chinese jujube cultivated in southern Xinjiang province of China. The endophytic bacterium Brevibacterium halotolerans JZ7 was selected for its strong antagonistic activity and growth-promoting characteristics. Gas-chromatog. mass-spectrometry anal. showed that acetoin, 2,3-butanediol and fenretinide were the three dominant volatile organic compounds produced by strain JZ7. Fenretinide strongly suppressed spore germination of F. oxysporum in vitro. Pot experiments showed that strain JZ7 colonized both the roots and rhizosphere soil of Chinese jujube and significantly reduced F. oxysporum level in jujube rhizosphere soil. We demonstrated that B. halotolerans JZ7 can be developed into a biol. control agent to combat root rot disease of Chinese jujube in the Xinjiang province of China. Significance and Impact of the Study : The suggested strategy for biol. control of jujube root rot disease is fully in accordance with the current principles of sustainability.

Journal of Applied Microbiology published new progress about Alternaria. 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, Application In Synthesis of 584-02-1.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zhou, Shenghui published the artcileZirconium-lignosulfonate polyphenolic polymer for highly efficient hydrogen transfer of biomass-derived oxygenates under mild conditions, Category: alcohols-buliding-blocks, the main research area is zirconium lignosulfonate polyphenolic polymer hydrogen transfer biomass oxygenate mild.

Both value-added utilization of low-rank renewable feedstocks to prepare catalytic materials and selective transformation of bioderived aldehydes are very attractive topics. Herein, lignosulfonate, a waste byproduct from the paper industry, was simply assembled with ZrCl4 under non-toxic hydrothermal conditions for scalable preparation of Zr-containing polyphenolic biopolymer catalysts (Zr-LS). Systematic characterizations indicated that the strong coordination between Zr4+ and phenolic hydroxyl groups in lignosulfonate led to the formation of strong Lewis acid-base couple sites (Zr4+-O2-) and porous inorganic-organic framework structure (mesopores centered at 6.1 nm), while the inherent sulfonic groups in lignosulfonate could serve as Bronsted acidic sites. The cooperative role of these versatile acid-base sites in Zr-LS afforded excellent catalytic performance for Meerwein-Ponndorf-Verley (MPV) reaction of a broad range of bioderived platform chems. under mild conditions (80 °C), especially of furfural (FF) to furfuryl alc. (FA), in quant. yields (96%) with high FA formation rate of 9600 μmol g-1 h-1 and TOF of 4.37 h-1. Kinetic studies revealed that the activation energy of the MPV reduction of FF was as low as 52.25 kJ/mol, accounting for the high reaction rate. Isotopic labeling experiments demonstrated direct hydrogen transfer from the α-C of 2-PrOH to the α-C of FF on acid-base sites was the rate-determining step. Moreover, Zr-LS showed good recyclability for at least seven reaction cycles.

Applied Catalysis, B: Environmental published new progress about Adsorption. 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Mangoufis-Giasin, Iosif published the artcileDifferent promoting roles of ruthenium for the oxidation of primary and secondary alcohols on PtRu electrocatalysts, Safety of 3-Pentanol, the main research area is oxidation catalsyt primary econdary alc platinum ruthenium electrocatalyst.

This study shows remarkably different features between the oxidation of secondary and primary C3-C5 alcs. The oxidation of primary alcs. is controlled by the oxidative removal of blocking adsorbates, such as CO, formed after the dissociative adsorption of alc. mols. Conversely, secondary alcs. do not undergo dissociative adsorption and therefore their oxidation is purely controlled by the energetics of the elementary reaction steps. In this respect, a different role of Ru is revealed for the electrooxidation of primary and secondary alcs. on bimetallic Pt-Ru catalysts. Ru enhances the oxidation of primary alcs. via the established bifunctional mechanism, in which the adsorption of (hydr)oxide species that are necessary to remove the blocking adsorbates is favored. In contrast, the oxidation of secondary alcs. is enhanced by the Ru-assisted stabilization of an O-bound intermediate that is involved in the potential-limiting step. This alternative pathway enables the oxidation of secondary alcs. close to the equilibrium potential.

Journal of Catalysis published new progress about Adsorption. 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, Safety of 3-Pentanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zhu, Kaili published the artcileOne-Pot Synthesis of Tensile-Strained PdRuCu Icosahedra toward Electrochemical Hydrogenation of Alkene, Computed Properties of 584-02-1, the main research area is alkene lead ruthenium copper icosahedra one pot synthesis.

Electrochem. hydrogenation (ECH) uses electricity to drive proton (H+) reduction for hydrogenation, which can greatly reduce energy supply and environmental pollution, representing an ideal alternative to traditional thermal hydrogenation. In this work, we put forward tensile-strained PdRuCu alloy to promote ECH. Tensile strain promotes the adsorption of C=C by changing the d-band center. Meanwhile, alloying Ru and Cu into Pd lattice facilitates hydrogenation by weakening Pd-H bonding. Therefore, PdRuCu icosahedra display excellent ECH performance of 2-methyl-3-buten-2-ol (MBE) with specific activity of 227.4μmolMBE nm-2 min-1 at -0.3 V vs. reversible hydrogen electrode (RHE), about 16.1 and 10.5 times higher than that of com. Pd/C and Ru/C, resp. In addition, PdRuCu icosahedra was excellent in the scaling up of substrate concentration combined with anisyl alc. oxidation to produce high-value added anisaldehyde at anode. This work provides a guideline for the rational design of highly active and durable metallic catalyst in ECH.

ChemElectroChem published new progress about Adsorption. 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, Computed Properties of 584-02-1.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts