Category: 111-87-5

Das, Uttam Kumar published the artcileDehydrogenative Cross-Coupling of Primary Alcohols To Form Cross-Esters Catalyzed by a Manganese Pincer Complex, Category: alcohols-buliding-blocks, the main research area is primary alc manganese pincer complex catalyst dehydrogenative cross coupling; cross ester preparation.

Base-metal-catalyzed dehydrogenative cross-coupling of primary alcs. to form cross-esters as major products, liberating hydrogen gas, is reported. The reaction is catalyzed by a pincer complex of earth-abundant manganese in the presence of catalytic base, without any hydrogen acceptor or oxidant. Mechanistic insight indicates that a dearomatized complex is the actual catalyst, and indeed this independently prepared dearomatized complex catalyzes the reaction under neutral conditions.

ACS Catalysis published new progress about Carboxylic esters Role: SPN (Synthetic Preparation), PREP (Preparation). 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Cibotaru, Dorina published the artcileComparison of liquid-liquid extraction, microextraction and ultrafiltration for measuring free concentrations of testosterone and phenytoin, Related Products of alcohols-buliding-blocks, the main research area is testosterone phenytoin liquid extraction microextraction ultrafiltration; albumin; free concentration; liquid–liquid extraction; phenytoin; plasma protein binding; solid-phase microextraction; testosterone; ultrafiltration.

The purpose of the study was to find methods suitable for measuring the free concentrations of testosterone and phenytoin. Sample solutions of the compounds in buffer and human albumin were processed using liquid-liquid extraction, microextraction and ultrafiltration and analyzed by LC-MS/MS. Liquid-liquid extraction with di-Bu phthalate provided complete extraction from buffer solutions and partial extraction from albumin samples. Spintip C18 devices provided exhaustive extraction from buffer and albumin samples. Spintip C8 devices offered complete extraction from buffer and approx. 50% recovery from albumin samples. Centrifree ultrafiltration devices showed high recovery of free concentrations from all the samples, while Amicon and Nanosep devices provided partial recovery. Spintip C8 and Centrifree devices proved useful for measuring free concentrations

Bioanalysis published new progress about Human albumins Role: AMX (Analytical Matrix), ANST (Analytical Study). 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Related Products of alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Disdier, Zoe published the artcileEffect of solutes structure and pH on the n-octanol/water partition coefficient of ionizable organic compounds, Name: n-Octanol, the main research area is review solute pH noctanol water ionizable organic compound; Carboxylic acids; Emerging organic contaminant; Ionizable compounds; Partition coefficient; Zwitterion; n-octanol.

Liquid-liquid partition coefficient is a useful tool to predict biol. and environmental fate of organic compounds, for example bioaccumulation or toxicity of lipophilic contaminants. Conversely, the partitioning of ionizable compounds is poorly studied in contrast to that of neutral compounds Yet, such topic deserves attention, since numerous organic contaminants are ionizable as well as their degradation products. Hence, the contribution of charged species has to be considered in order to model accurately the mass balance or partition of ionizable compounds In this context, we investigated the liquid-liquid partition of 13 ionizable compounds (oxalic acid, histidine, benzimidazole, etc.), covering various classes of compounds (carboxylic acids, amino-acids, etc.). The n-octanol/water partition coefficient was measured from pH 1 up to 13, in order to fully gather the distribution of both neutral and charged species. Empirical models describing these results are reviewed and partition parameters adjusted for charged species. The study of benzoic acid derivatives (benzoic, salicylic, ortho- and iso-phthalic acids) provides insights on the influence of chem. groups on the partitioning. In the case of tryptophan, the use of acid/base microconstants allowed to estimate the partition of both the zwitterion and its neutral tautomer. Despite a major zwitterionic form (log PZ(tryptophan) = -1.58 ± 0.30), the minor but neutral tautomer (log PN(tryptophan) = +0.03 ± 0.30) drives the partition equilibrium Overall, the provided data may be useful to assess the retention of contaminants, its dependency on pH and salinity variations, and thus understanding their environmental fate. Such data may also be useful as well for mol. simulation involving solvation of organic ions in aqueous and non-aqueous solvents.

Chemosphere published new progress about Amino acids Role: TEM (Technical or Engineered Material Use), USES (Uses). 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Name: n-Octanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Niu, Feng published the artcileCatalyst Deactivation for Enhancement of Selectivity in Alcohols Amination to Primary Amines, Product Details of C8H18O, the main research area is primary amine chemoselective preparation; alc deactivated cobalt catalyst chemoselective amination; kinetics catalyst characterization chemoselective amination alc cobalt.

The selectivity of cobalt catalysts generated from alumina-supported cobalt for chemoselective amination of alcs. with ammonia to give primary amines improved with pretreatment with 1-butanol or other alcs. The modified catalysts were characterized and the inactivating carbon species generated were characterized on extraction of the catalysts. The effect of carbon deposition on the amination selectivity likely arises from steric inhibition of the hydrogenation of bulky secondary imine intermediates over partially carbon-decorated cobalt nanoparticles.

ACS Catalysis published new progress about Alcohols Role: RCT (Reactant), RGT (Reagent), RACT (Reactant or Reagent). 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Product Details of C8H18O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Aisala, Heikki published the artcileOdor-contributing volatile compounds of wild edible Nordic mushrooms analyzed with HS-SPME-GC-MS and HS-SPME-GC-O/FID, HPLC of Formula: 111-87-5, the main research area is mushroom volatile compound; Aromagram; Gas chromatography–olfactometry; Mushrooms; Odor; SPME.

Although Nordic wild edible mushrooms offer a wide range of different odors their scientific examination has been scarce. The aim of this study was to characterize the aroma compounds of four Finnish wild mushroom species with trained assessors using gas chromatog.-olfactometry as well as gas chromatog.-mass spectrometry. Headspace volatiles were extracted from sous vide cooked mushroom samples (Boletus edulis, Lactarius camphoratus, Cantharellus cibarius and Craterellus tubaeformis) using solid-phase microextraction Odor-contributing compounds were measured with two columns of differing polarity using the detection frequency method. Compounds were identified based on reference compounds, linear retention indexes, odor descriptions, and mass spectrometry. Both the volatile compound profiles and the aromagrams were distinct with characteristic compounds for each species. The results demonstrate that especially saturated and unsaturated aldehydes and ketones contribute to the odor of the studied wild mushrooms. This thorough comparison also indicates compounds linked to the sensory properties of mushrooms.

Food Chemistry published new progress about Hydrocarbons Role: ANT (Analyte), PRP (Properties), ANST (Analytical Study). 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, HPLC of Formula: 111-87-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Bilz, Florian published the artcileVisualization of a Distributed Synaptic Memory Code in the Drosophila Brain, Recommanded Product: n-Octanol, the main research area is GCaMP calcium learning memory synaptic plasticity Drosophila animal behavior; Drosophila melanogaster; Kenyon cell; insect brain; learning and memory; mushroom body; neuronal assemblies; odor representation; olfactory coding; optical calcium imaging; synaptic plasticity.

During associative conditioning, animals learn which sensory cues are predictive for pos. or neg. conditions. Because sensory cues are encoded by distributed neurons, one has to monitor plasticity across many synapses to capture how learned information is encoded. We analyzed synaptic boutons of Kenyon cells of the Drosophila mushroom body γ lobe, a brain structure that mediates olfactory learning. A fluorescent Ca2+ sensor was expressed in single Kenyon cells so that axonal boutons could be assigned to distinct cells and Ca2+ could be measured across many animals. Learning induced directed synaptic plasticity in specific compartments along the axons. Moreover, we show that odor-evoked Ca2+ dynamics across boutons decorrelate as a result of associative learning. Information theory indicates that learning renders the stimulus representation more distinct compared with naive stimuli. These data reveal that synaptic boutons rather than cells act as individually modifiable units, and coherence among them is a memory-encoding parameter.

Neuron published new progress about Behavior Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Recommanded Product: n-Octanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Liu, Shuxun published the artcileVolatile composition of bilberry wines fermented with non-Saccharomyces and Saccharomyces yeasts in pure, sequential and simultaneous inoculations, SDS of cas: 111-87-5, the main research area is alc ester aldehyde acetal bilberry wine Saccharomyces; Bilberry wine; Non-Saccharomyces yeast; Saccharomyces cerevisiae; Schizosaccharomyces pombe; Torulaspora delbrueckii; volatile composition.

Bilberry (Vaccinium myrtillus L.) juice was fermented with Torulaspora delbrueckii (TD291 and TD70526) and Schizosaccharomyces pombe (SP3796 and SP70572) in pure fermentation as well as in sequential and simultaneous inoculations with Saccharomyces cerevisiae 1116 (SC1116). Altogether, 56 volatile compounds were identified and semi-quantified with HS-SPME-GC/MS in bilberry products. Yeast fermentation prominently enhanced the aroma complexity of bilberry with a sharp increase in alcs., esters, aldehydes, and acetals. Compared to S. cerevisiae, T. delbrueckii produced less ethanol but more fusel alcs. that potentially enhance “”alc.”” and “”nail polish”” odors in TD70526 and less “”fruity”” esters in TD291. SP70572 resulted in high productions of undesirable compounds of acetoin and acetaldehyde but a low content of higher alcs. and esters, SP3796 produced a high content of fatty acid Et esters and acetoin. In comparison with monoculture of non-Saccharomyces yeast, sequential and simultaneous cultures of S. pombe and S. cerevisiae significantly decreased the content of acetoin while increased the relative level of esters; sequential cultures of T. delbrueckii and S. cerevisiae remarkably increased the concentration of acetaldehyde; simultaneous inoculations of S. cerevisiae with TD70526 and TD291 significantly decreased the content of fusel alcs. and increased the content of esters, resp. The findings suggested that non-Saccharomyces yeasts possess the potential to affect and modulate the aromatic profile of fermented bilberry products. Sequential and simultaneous inoculations with S. pombe strains and S. cerevisiae as well as simultaneous fermentation using T. delbrueckii strains and S. cerevisiae are optimal strategies to pos. influence the aroma profile of bilberry wines.

Food Microbiology published new progress about Acetals Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, SDS of cas: 111-87-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Wei, Jianping published the artcileAssessment of chemical composition and sensorial properties of ciders fermented with different non-Saccharomyces yeasts in pure and mixed fermentations, Category: alcohols-buliding-blocks, the main research area is Pichia Hanseniaspora Torulaspora sensory property cider fermentation; 2-methylbutanol (PubChem CID: 8723); 2-methylbutyl acetate (PubChem CID: 12209); 3-methylbutyl acetate (PubChem CID: 31276); Cider; DL-malic acid (PubChem CID: 525); Glycerol (PubChem CID: 753); Hanseniaspora vineae; Partial least squares regression; Pichia kluyveri; Simultaneous fermentation; chlorogenic acid (PubChem CID: 1794427); ethyl octanoate (PubChem CID: 7799); phenylethyl alcohol (PubChem CID: 6054); β-damascenone (PubChem CID: 5366074); β-phenethyl acetate (PubChem CID: 7654).

This work presents the attempt to enhance the flavor complexity of cider fermented by different non-Saccharomyces species. Pichia kluyveri and Hanseniaspora vineae pure cultures were used as reference ciders. Mixed cultures between all 4 species gave 5 fermentations, where Hanseniaspora uvarum or Torulaspora quercuum were included for apple juice fermentation Chem. composition and sensorial properties of all ciders were studied. The results indicated that the growth of P. kluyveri and H. vineae were interreacted and also affected by H. uvarum and T. quercuum. H. vineae was more capable of consuming sugar than P. kluyveri. Ciders from the single culture fermentation with P. kluyveri (Pk), as well as from mixed fermentation with P. kluyveri and H. uvarum (Pk-Hu), had high residual sugar, sugar/acid ratio, and glucose-fructose consumption ratio. Large shifts in the consumption and production of organic acids and polyphenols among all ciders were observed The calculation of the relative odor activity value (rOAV) showed that 17 volatile compounds had an rOAV >1 in at least one sample, and acetate esters and Et esters were the groups with the highest number of volatile compounds of importance to the cider aroma. Among these 17 compounds, 3-methylbutyl acetate, 2-methylbutyl acetate, Et hexanoate, Et octanoate, and β-damascenone exhibited high rOAVs in some ciders and might contribute fruity, floral, and sweet features to the cider aroma. Besides, the tropical fruity aroma from 3-methylbutyl acetate was only perceived in Pk and Pk-Hu. The partial least squares regression (PLSR) anal. revealed that acetate esters contributed pos. to the roasted and cooked odor of all ciders. This is the first study evaluating simultaneous fermentation of two non-Saccharomyces yeasts to produce cider, which provides new insights into cider production

International Journal of Food Microbiology published new progress about Alcohols Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Yang, Xiaoyong published the artcileEfficient recovery of phenol from coal tar processing wastewater with tributylphosphane/diethyl carbonate/cyclohexane: Extraction cycle and mechanism study, Synthetic Route of 111-87-5, the main research area is phenol tributylphosphane diethyl carbonate cyclohexane coal tar processing wastewater.

Sodium sulfate wastewater is a kind of coal tar processing effluent containing highly concentrated phenol. Owing to its high toxicity, phenol pose a serious threat to the natural environment and human health. In this paper, a novel ternary extractant, tributylphosphane (TBP)/diethyl carbonate (DEC)/cyclohexane, was utilized to extract phenol from the wastewater. The combination of 20% TBP, 20% DEC, and 60% cyclohexane yielded a high extraction efficiency of 99.79% under the suggested conditions (time of 6 min, organic-aqueous volume ratio of 1, pH of 5.05 and temperature of 298.15 K). Fourier-transform IR spectroscopy anal. illustrates that the extraction of phenol was enabled by intermol. hydrogen bonding with both TBP and DEC. The stripping of phenol from the phenol-loaded extractant was carried out using an alkali solution, realizing the recovery of phenol resource and the regeneration of extractant. The stripping efficiency reached 96.29% when using 1 mol/L NaOH solution under certain conditions (contact time of 4 min, aqueous-organic volume ratio of 1, and temperature of 313.15 K). Addnl., the pH response anal. shows that the stripping process could be divided into four stages and more than 8 min of contact time leaded to the hydrolysis of the DEC. The ultra-high phenol recovery, up to 99.78%, was achieved from the actual wastewater via a two-stage extraction and back-extraction

Chemical Engineering Research and Design published new progress about Coal tar Role: PEP (Physical, Engineering or Chemical Process), PROC (Process). 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Synthetic Route of 111-87-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zheng, Zhiwei published the artcileKinetic and Thermodynamic Requirements To Extend Solvent Compatibility in Thermal-Assisted Extraction of Inert Platinum Group Metals, Synthetic Route of 111-87-5, the main research area is platinum group metal solvent extraction.

The extraction behavior of inert Pt group metals (PGMs) like Ru(III) and Rh(III) was studied in a HNO3(aqueous)/1-octanol system with a pyridinediamide. As a result, low efficiency of Ru(III) extraction arose from its slow kinetics at 298 K, while the situation was not improved very much even at 356 K. Addition of a hydrophobic anion like Tf2N- increased Ru(III) extraction up to 95% within 3 h at 356 K, where a synergistic effect would be present. Extraction of a more inert PGM like Rh(III) was also enhanced up to 90% within 2 h at 356 K in the presence of Tf2N-. The authors have successfully demonstrated the rapid and efficient extraction of inert PGMs from HNO3(aqueous) to 1-octanol, which is one of the ordinary organic solvents.

ACS Sustainable Chemistry & Engineering published new progress about Platinum-group metals Role: PUR (Purification or Recovery), PREP (Preparation). 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Synthetic Route of 111-87-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts