Tag: M.W=100-150

Xiu, Fu-Rong; Lu, Yongwei; Qi, Yingying published the artcile< DEHP degradation and dechlorination of polyvinyl chloride waste in subcritical water with alkali and ethanol: A comparative study>, Name: 2-Ethylhexan-1-ol, the main research area is polyvinyl chloride ethanol dechlorination diethylhexyl phthalate degradation wastewater treatment; DEHP; Degradation; PVC; Phthalic acid ester; Subcritical water.

In this study, subcritical water-NaOH (CW-NaOH) and subcritical water-C2H5OH (CW-C2H5OH) processes were developed for diethylhexyl phthalate (DEHP) degradation and dechlorination of polyvinyl chloride (PVC) waste. The introduction of NaOH or C2H5OH in subcritical water had a noticeable influence on the mechanism of DEHP degradation and dechlorination. For both CW-NaOH and CW-C2H5OH treatments, the increase in temperature could increase dechlorination efficiency (DE) of PVC. The DE of CW-NaOH is much higher than that of CW-C2H5OH under the same conditions. The DE of CW-NaOH could exceed 95% at 300°C. Hydroxyl nucleophilic substitution was the main dechlorination mechanism in CW-NaOH, while nucleophilic substitution and direct dehydrochlorination were equally important in CW-C2H5OH. In CW-NaOH treatment, 2-ethyl-1-hexanol, benzaldehyde, and toluene were obtained by hydrolysis and reduction reactions of DEHP. Acetophenone was produced by the further cyclization, dehydrogenation and rearrangement reactions of 2-ethyl-1-hexanol. Transesterification was the main degradation pathway of DEHP in CW-C2H5OH at 300°C. The cyclization and dehydration of 2-ethyl-1-hexanol resulted in producing a high level of ethyl-cyclohexane and 1-ethyl-cyclohexene in CW-C2H5OH at 350°C. Furthermore, high concentration of Et palmitate and Et stearate could be prepared in CW-C2H5OH system by the strong reactivity of C2H5OH with the lubricants in PVC.

Chemosphere published new progress about Cyclization. 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, Name: 2-Ethylhexan-1-ol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Mukhopadhyay, Arindam; Bernard, Brianna; Liu, Kaixuan; Paulino, Victor; Liu, Chuan; Donley, Carrie; Olivier, Jean-Hubert published the artcile< Molecular Strategies to Modulate the Electrochemical Properties of P-Type Si(111) Surfaces Covalently Functionalized with Ferrocene and Naphthalene Diimide>, Name: (4-Ethynylphenyl)methanol, the main research area is electrochem silicon covalently functionalized ferrocene naphthalene diimide.

The surface coverage and mol. composition of redox-active mols. anchored on conductive surfaces regulate the kinetic and thermodn. parameters of charge transfer reactions, providing a means to tune the electrochem. properties of hybrid materials. Herein, anchoring strategies and structural properties of redox-active probes, derived from ferrocene (Fc) and naphthalene diimide (NDI), regulate the electrochem. properties of functionalized p-doped Si(111) surfaces. Covalent functionalization of H-terminated Si(111) surfaces with Fc and NDI affords redox-active hybrid interfaces characterized through microscopy, spectroscopy, and voltammetry methods. Mol. design and synthetic grafting strategies modulate the electrochem. properties of the Fc-functionalized Si surfaces with a much higher (∼25 times) surface coverage (1.25 × mol. cm-2) for 1-step photografting compared to divergent synthetic routes. The thermal grafting of an alkadiyne followed by click reaction with ferrocenyl-azide leads to one of the highest surface coverages ( 9.97 × 10-10 mol cm-2) of organo-Fe reported and a significant anodic shift of the half-potential (>350 mV) compared to photografting methods. Similar experiments with NDI units exhibited electrochem. properties that diverge from those recorded for NDI in solution The results presented herein offer access to novel redox-active Si interfaces that evidence tunable electrochem. properties of potential interest for microelectronics applications.

Journal of Physical Chemistry B published new progress about Chemically modified electrodes. 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

Meng, Shan-Shui; Lin, Li-Rong; Luo, Xiang; Lv, Hao-Jun; Zhao, Jun-Ling; Chan, Albert S. C. published the artcile< Aerobic oxidation of alcohols with air catalyzed by decacarbonyldimanganese>, Reference of 403-41-8, the main research area is manganese catalyzed aerobic oxidation functionalized alc.

The oxidation of alcs. to carbonyl compounds using air as the terminal oxidant is highly desirable. As described in previous reports, the abstraction of α-H of the alc. is the most important step, and it typically requires not only a metal catalyst but also complex ligands, co-catalysts and bases. Herein, we report a practical and efficient method for the oxidation of primary alcs., secondary alcs., 1,2-diols, 1,2-amino alcs., and other α-functionalized alcs. using a com. available catalyst, Mn2(CO)10, and no additives. Preliminary mechanistic studies indicated that an alkoxyl radical intermediate existed in our system, and a plausible mechanism consistent with the exptl. results and literature was proposed.

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

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Nelson, Hope; Richard, William; Brown, Hailee; Medlin, Abigail; Light, Christina; Heller, Stephen T. published the artcile< Practical Chemoselective Acylation: Organocatalytic Chemodivergent Esterification and Amidation of Amino Alcohols with N-Carbonylimidazoles>, Recommanded Product: (2-Aminophenyl)methanol, the main research area is alc carbonylimidazole diazabicycloundecene catalyst chemoselective esterification; carboxylic ester preparation; carbonylimidazole aniline pyridinium chloride catalyst chemoselective amidation; aryl amide preparation; amidation; carbonylimidazoles; chemoselectivity; esterification; organocatalysis.

Here, the N-carbonylimidazoles enable catalytic chemodivergent aniline or alc. acylation in the presence of pyridinium ions or 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU), was reported. Both acylation reactions display high and broad chemoselectivity for the target group. Unprecedented levels of chemoselectivity were observed in the DBU-catalyzed esterification: A single esterification product was obtained from a mol. containing primary aniline, alc., phenol, secondary amide, and N-H indole groups. These acylation reactions are highly practical as they involve only readily available, inexpensive, and relatively safe reagents; can be performed on a multigram scale; and can be used on carboxylic acids directly by in situ formation of the acylimidazole electrophile.

Angewandte Chemie, International Edition published new progress about Acylation (chemoselective). 5344-90-1 belongs to class alcohols-buliding-blocks, and the molecular formula is C7H9NO, Recommanded Product: (2-Aminophenyl)methanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Jung, Mun Yhung; Lee, Da Eun; Baek, Sun Hye; Lim, Su Min; Chung, Ill-Min; Han, Jae-Gu; Kim, Seung-Hyun published the artcile< An unattended HS-SPME-GC-MS/MS combined with a novel sample preparation strategy for the reliable quantitation of C8 volatiles in mushrooms: A sample preparation strategy to fully control the volatile emission>, Safety of 2-Ethylhexan-1-ol, the main research area is mushroom volatile HSSPMEGCMS freeze drying rehydration; Automation; Beech; Button; C8 volatiles; Gas chromatography; Headspace-solid phasemicroextraction; Mass spectrometry; Mushrooms; Quantitative analysis; Shiitake.

Eight carbon (C8) compounds are the key characteristic flavors of mushrooms. The quant. anal. of the volatiles in mushrooms is challenging especially with the unattended HS-SPME-GC-MS. An unattended HS-SPME-GC-MS/MS in combination with novel sample preparation of the complete control of volatile emissions was developed for the quantitation of the C8 volatiles in mushrooms. The sample preparation strategy was composed of freeze-drying, rehydration, and the addition of a 15% citric acid solution With this strategy, the volatile emission from mushroom was fully controlled at a certain time point. This method was found to be highly reliable, sensitive, precise, and accurate. This method was successfully applied to measure the contents of the C8 volatiles in the beech, button, and shiitake mushrooms. 1-Octene-3-ol was the most predominant compound in the mushrooms, representing 62.4, 69.0, and 89.2% of the total C8 volatiles in the beech, button, and shiitake mushrooms, resp.

Food Chemistry published new progress about Acrylic polymers Role: ARG (Analytical Reagent Use), MOA (Modifier or Additive Use), ANST (Analytical Study), USES (Uses). 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, Safety of 2-Ethylhexan-1-ol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Nisanci, Bilal; Dagalan, Ziya published the artcile< A facile and highly efficient transfer hydrogenation of ketones and aldehydes catalyzed by palladium nanoparticles supported on mesoporous graphitic carbon nitride>, Formula: C8H9FO, the main research area is carbonyl compound ammonia borane palladium catalyst hydrogenation; alc preparation.

A novel transfer hydrogenation methodol. for the reduction of ketones (14 examples) and benzaldehyde derivatives (12 examples) to the corresponding alcs. using Pd nanoparticles supported on mesoporous graphitic carbon nitride (mpg-C3N4/Pd) as a reusable catalyst and ammonia borane as a safe hydrogen source in an aqueous solution MeOH/H2O (volume/volume = 1/1) was described. The catalytic hydrogenation reactions were conducted in a com. available high-pressure glass tube at room temperature and the corresponding alcs. were obtained in high yields in 2-5 min. Moreover, the presented transfer hydrogenation protocol showed partial halogen selectivity with bromo-, fluoro- and chloro-substituted carbonyl analogs. In addition, the present catalyst can be reused up to five times without losing its efficiency and scaling-up the reaction enabled α-methylbenzyl alc. to be produced in 90% isolated yield.

Journal of Chemical Research published new progress about Alcohols Role: SPN (Synthetic Preparation), PREP (Preparation). 403-41-8 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H9FO, Formula: C8H9FO.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Rautiainen, Paavo; Hyttinen, Marko; Ruokolainen, Joonas; Saarinen, Pekka; Timonen, Jussi; Pasanen, Pertti published the artcile< Indoor air-related symptoms and volatile organic compounds in materials and air in the hospital environment>, HPLC of Formula: 104-76-7, the main research area is indoor air volatile organic compound material hospital environment; HVAC environ; VOC; indoor air pollution; material emissions; questionnaire.

In this case study, hospital workers did suffer from symptoms related to the poor indoor air quality. To investigate reasons for symptoms MM40-survey and house inspection methods were performed. The study consisted of 49 operating rooms and 470 employees. MM-40 survey revealed that over 40% of the staff suffered from skin reactions, over 50% had upper respiratory tract symptoms and 25% suffered headaches. No reason for the staff’s symptom could be found in the structural studies of workplaces. The mean air exchange rate of the rooms was 5.51/h. In total 61 materials and 49 indoor air samples were taken. The most frequently found compounds in the material samples were 2-ethyl-1-hexanol and aliphatic hydrocarbons. VOC emissions were high in some of the material samples and they presumably were the one reason for the workers’ symptoms observed in some in of the rooms. However, indoor air VOC concentrations were low in most of the cases. According to the linear regression model emissions from flooring material couldn’t explain the indoor air concentration of the VOCs. One reason for that was the high ventilation rates of the rooms, which presumably kept VOC levels in indoors low. In addition, VOC concentrations indoors were strongly related to the ongoing healthcare activities in the hospital.

International Journal of Environmental Health Research published new progress about Aliphatic hydrocarbons Role: PEP (Physical, Engineering or Chemical Process), PROC (Process). 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, HPLC of Formula: 104-76-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Hiessl, Robert; Hennecke, Leon; Plass, Carmen; Kleber, Joscha; Wahlefeld, Stefan; Otter, Rainer; Groeger, Harald; Liese, Andreas published the artcile< FTIR based kinetic characterisation of an acid-catalysed esterification of 3-methylphthalic anhydride and 2-ethylhexanol>, Recommanded Product: 2-Ethylhexan-1-ol, the main research area is methylphthalic anhydride ethylhexanol esterification kinetics FTIR spectra.

In this study, an inline anal. method was designed and applied in process characterization and development. The model reaction is the two-step diesterification of 3-methylphthalic anhydride with 2-ethylhexanol consisting of alcoholysis as the first step, followed by an acid-catalyzed, second esterification step leading to the corresponding diester. The final product is a potential, alternative plasticiser. For the inline measurements, attenuated total reflection Fourier transformed IR spectroscopy (ATR-FTIR) was implemented. In order to evaluate the spectra recorded during the reaction, a chemometric model was established. In this work, Indirect Hard Modeling (IHM), a non-linear modeling approach was employed. The resp. model was calibrated by using offline samples analyzed with gas (GC) and liquid chromatog. (HPLC). After successful validation of the chemometric model, the inline measurements were utilized for reaction characterization. The acid-catalyzed, second esterification step was identified as the limiting reaction step. From batch reactions conducted at different temperatures, the energy of activation of this step was determined to be 79.5 kJ mol-1. Addnl., kinetics were shown to follow a pseudo-first order with respect to the monoester formation and a kinetic model was established. The model was validated in simulations with changed reaction conditions.

Analytical Methods published new progress about Activation energy. 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, Recommanded Product: 2-Ethylhexan-1-ol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Hou, Zhong-Wei; Li, Laiqiang; Wang, Lei published the artcile< Regio- and stereoselective electrochemical selenoalkylation of alkynes with 1,3-dicarbonyl compounds and diselenides>, Synthetic Route of 10602-04-7, the main research area is selenated alkene preparation regioselective diastereoselective; aryl alkyne dicarbonyl compound diselenide selenoalkylation electrochem.

A regio- and stereoselective electrochem. approach for the seleno(monofluoro)alkylation of alkynes with 1,3-dicarbonyl compounds and diselenides has been developed. The electrosynthesis method utilizes C-H substrates as radical precursors and the source of carbon atoms, avoiding dependence on pre-functionalized substrates. A series of selenated alkenes, e.g., I, were prepared with satisfactory outcomes under noble metal-free and oxidizing reagent-free conditions.

Organic Chemistry Frontiers published new progress about 1,3-Dicarbonyl compounds Role: RCT (Reactant), RACT (Reactant or Reagent). 10602-04-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C9H8O, Synthetic Route of 10602-04-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Chen, Li-Hui; Tian, Ke; Wang, Gui-Rong; Xu, Xiang-Li; He, Ke-Hang; Liu, Wei; Wu, Jun-Xiang published the artcile< The general odorant receptor GmolOR9 from Grapholita molesta (Lepidoptera: Tortricidae) is mainly tuned to eight host-plant volatiles>, Related Products of 104-76-7, the main research area is host plant volatile grapholita molesta lepidoptera tortricidae; general odorant receptor GmolOR9; Grapholita molesta; odorant receptor; oriental fruit moth; volatiles.

Grapholita molesta is one of the most destructive fruit pests distributed worldwide. Odorant receptors (ORs) located on the dendritic membrane of chemosensory neurons are deemed to be key mols. for sensing exogenous chem. signals. In this study, GmolOR9, a general OR from G. molesta, was functionally characterized. Quant. real-time polymerase chain reaction revealed that GmolOR9 was more highly expressed in adults than in other stages, including eggs, larvae, and pupae. GmolOR9 expression was highly significantly more in the antennae of females than in those of males, and the highest level occurred in the antennae of 3-day-old female adults. GmolOR9 was broadly tuned to eight of 47 odorant components tested, including (Z)-3-hexenyl acetate, Bu propionate, Et hexanoate, Et heptanoate, 1-hexanol, (Z)-3-hexenol, 2-ethyl-1-hexanol, and linalool, by in vitro heterologous expression. Furthermore, electroantennogram responses indicated that the effects of dsOR9-injected females to (Z)-3-hexenyl acetate dramatically decreased. These results suggested that GmolOR9 might be involved in detecting host-plant volatiles. Moreover, (Z)-3-hexenyl acetate might serve as a potential attractant for the biol. control of G. molesta.

Insect Science published new progress about Antenna (anatomical). 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, Related Products of 104-76-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts