Category: 645-56-7

Iio, Takuya published the artcileFine-Bubble-Slug-Flow Hydrogenation of Multiple Bonds and Phenols, Product Details of C9H12O, the publication is Synlett (2020), 31(19), 1919-1924, database is CAplus.

A promising method for the continuous hydrogenation of alkenes or alkynes by using a newly developed fine-bubble generator is described. The fine-bubble-containing slug-flow system was up to 1.4 times more efficient than a conventional slug-flow method. When applied in the hydrogenation of phenols to the corresponding cyclohexanones, the fine bubble-slug-flow method suppressed over-reduction As this method does not require the use of excess gas, it is expected to be widely applicable in improving the efficiency of gas-mediated flow reactions.

Synlett 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 C9H12O, Product Details of C9H12O.

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

Startek, Justyna B. published the artcileThe agonist action of alkylphenols on TRPA1 relates to their effects on membrane lipid order: implications for TRPA1-mediated chemosensation, Application In Synthesis of 645-56-7, the publication is International Journal of Molecular Sciences (2021), 22(7), 3368, database is CAplus and MEDLINE.

The Transient Receptor Potential Ankyrin 1 cation channel (TRPA1) is a broadly-tuned chemosensor expressed in nociceptive neurons. Multiple TRPA1 agonists are chem. unrelated non-electrophilic compounds, for which the mechanisms of channel activation remain unknown. Here, we assess the hypothesis that such chems. activate TRPA1 by inducing mech. perturbations in the plasma membrane. We characterized the activation of mouse TRPA1 by non-electrophilic alkylphenols (APs) of different carbon chain lengths in the para position of the aromatic ring. Having discarded oxidative stress and the action of electrophilic mediators as activation mechanisms, we determined whether APs induce mech. perturbations in the plasma membrane using dyes whose fluorescence properties change upon alteration of the lipid environment. APs activated TRPA1, with potency increasing with their lipophilicity. APs increased the generalized polarization of Laurdan fluorescence and the anisotropy of the fluorescence of 1,6-diphenyl-1,3,5-hexatriene (DPH), also according to their lipophilicity. Thus, the potency of APs for TRPA1 activation is an increasing function of their ability to induce lipid order and membrane rigidity. These results support the hypothesis that TRPA1 senses non-electrophilic compounds by detecting the mech. alterations they produce in the plasma membrane. This may explain how structurally unrelated non-reactive compounds induce TRPA1 activation and support the role of TRPA1 as an unspecific sensor of potentially noxious compounds

International Journal of Molecular Sciences 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 C34H33ClN6O7, Application In Synthesis of 645-56-7.

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

Amitrano, Alice published the artcileEstrogenic activity of lignin-derivable alternatives to bisphenol A assessed via molecular docking simulations, Synthetic Route of 645-56-7, the publication is RSC Advances (2021), 11(36), 22149-22158, database is CAplus and MEDLINE.

Lignin-derivable bisphenols are potential alternatives to bisphenol A (BPA), a suspected endocrine disruptor; however, a greater understanding of structure-activity relationships (SARs) associated with such lignin-derivable building blocks is necessary to move replacement efforts forward. This study focuses on the prediction of bisphenol estrogenic activity (EA) to inform the design of potentially safer BPA alternatives. To achieve this goal, the binding affinities to estrogen receptor alpha (ERα) of lignin-derivable bisphenols were calculated via mol. docking simulations and correlated to median effective concentration (EC50) values using an empirical correlation curve created from known EC50 values and binding affinities of com. (bis)phenols. Based on the correlation curve, lignin-derivable bisphenols with binding affinities weaker than ∼-6.0 kcal mol-1 were expected to exhibit no EA, and further anal. suggested that having two methoxy groups on an aromatic ring of the bio-derivable bisphenol was largely responsible for the reduction in binding to ERα. Such dimethoxy aromatics are readily sourced from the depolymerization of hardwood biomass. Addnl., bulkier substituents on the bridging carbon of lignin-bisphenols, like di-Et or dimethoxy, were shown to weaken binding to ERα. And, as the bio-derivable aromatics maintain major structural similarities to BPA, the resultant polymeric materials should possess comparable/equiv thermal (e.g., glass transition temperatures, thermal decomposition temperatures) and mech. (e.g., tensile strength, modulus) properties to those of polymers derived from BPA. Hence, the SARs established in this work can facilitate the development of sustainable polymers that maintain the performance of existing BPA-based materials while simultaneously reducing estrogenic potential.

RSC Advances 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 C9H12O, Synthetic Route of 645-56-7.

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

Yang, Zhi published the artcileEfficient hydrodeoxygenation of phenolic compounds and raw lignin-oil under a temperature-controlled phase-transfer catalysis, Formula: C9H12O, the publication is Fuel (2021), 120091, database is CAplus.

An effective binary catalyst by using tungstic acid (H₂WO₄) and Ru/C was employed for the hydrodeoxygenation (HDO) of phenolic compounds and raw lignin-oil. H2WO4 was presented as solid at ambient temperature, but it dissolved at high temperature above 100°C and therefore functioned as an active homogeneous catalyst. This phenomenon resulted in a temperature-controlled phase-transfer behavior in the HDO of phenolic compounds An efficient HDO performance and an exceptional reusability for guaiacol HDO were presented by this bifunctional catalyst, which can be reused more than 10 times with guaiacol conversion and cyclohexane selectivity over 90%. The comparison of traditional liquid organic and mineral acids, as well as solid acids, with H₂WO₄ confirmed the outstanding catalytic performance of H₂WO₄ and highlighted the advantages of H₂WO₄ as a homogeneous catalyst. Besides guaiacol, other phenolic compounds including various monomers and dimers all exhibited good HDO results, with 100% conversion and cycloalkanes selectivity. Moreover, the raw lignin-oil can be efficiently deoxygenated under the catalysis of this bifunctional catalyst 99.3% content of hydrocarbons was obtained in the upgraded lignin-oil, which was promising to be used as fuel directly. This catalytic system has great potential for the industrial application of lignin-oil upgrade.

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 C15H12O6, Formula: C9H12O.

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

Feng, Shanshan published the artcileLow temperature catalytic hydrodeoxygenation of lignin-derived phenols to cyclohexanols over the Ru/SBA-15 catalyst, Product Details of C9H12O, the publication is RSC Advances (2022), 12(15), 9352-9362, database is CAplus and MEDLINE.

Cyclohexanol and its derivatives are widely used as chem. intermediates and fuel additives. Herein, Ru/SBA-15 catalysts were prepared via impregnation, and used for the production of cyclohexanols from lignin-derived phenols. The catalyst samples were characterized by XRD, XPS, TEM, etc., where the Ru⁰ species was speculated as the active phase. 5 wt% Ru/SBA-15 with small Ru particle size (4.99 nm) and high Ru dispersion (27.05%) exhibited an excellent hydrogenation activity. A high cyclohexanol yield of >99.9% was achieved at 20°C for 5 h in an aqueous phase, and the catalyst indicated stable activity and selectivity after five runs. Crucially, Ru/SBA-15 exhibited a zero-order reaction rate with an apparent activation energy (Ea) as low as 10.88 kJ mol^-1 and a TON of 172.84 at 80°C. Simultaneously, demethoxylation activity was also observed in the hydrodeoxygenation (HDO) of G- and S-type monophenols, and a high yield of 37.4% of cyclohexanol was obtained at 80°C and 4 h when using eugenol as substrate.

RSC Advances 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 C9H12O, Product Details of C9H12O.

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

Chen, Guanyi published the artcileInvestigation on catalytic hydrodeoxygenation of eugenol blend with light fraction in bio-oil over Ni-based catalysts, Safety of 4-Propylphenol, the publication is Renewable Energy (2020), 456-465, database is CAplus.

In this work, HZSM-5, Al-SBA-15 and Al-SBA-15/HZSM-5 were adopted as supporting materials for the nickel-based catalysts used in hydrodeoxygenation process. Incipient wetness impregnation method was employed to load nickel species onto these materials. The physicochem. characterization was carried out using advanced instruments. The effect of composition of nickel-based catalysts on hydrodeoxygenation (HDO) reaction was studied. Support materials of nickel-based catalyst have a significantly impact on HDO activity. The highest selectivity (67.9%) of propyl-cyclohexane was obtained over nickel based Al-SBA-15/HZSM-5 catalyst, and nearly all the eugenol was completely hydrodeoxygenated after reaction. The impact of light fractions existed in bio-oil on phenols upgrading process was investigated. The conversion of eugenol mixed with light fractions reached nearly 100% for all the reactions. Eugenol mixed with light fractions as reactant could reduce ring break reaction during hydrodeoxygenation process. The selectivity of alkanes remained nearly unchanged after adding ethylene glycol into the reactant. However, the selectivity of propyl-cyclohexane was significantly decreased by mixing furfural or acetic acid with eugenol as reactant.

Renewable Energy 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 C9H12O, Safety of 4-Propylphenol.

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

Kong, Xiangchen published the artcileCatalytic hydroprocessing of stubborn lignin in supercritical methanol with Cu/CuMgAlO_x catalyst, Application In Synthesis of 645-56-7, the publication is Fuel Processing Technology (2021), 106869, database is CAplus.

Stubborn lignin (SL) is the thermochem. stable fragment generated from biomass utilization (e.g., pyrolysis, hydrolysis, fermentation, pulping), which is comparatively difficult to be further depolymerized into value-added bio-products. The cleavage of the stubborn linkages within the structure of SL, such as C-C, α-O-4, and 4-O-5 linkages, is the key for its valorization. Herein, we investigated the depolymerization of SL through catalytic hydroprocessing in supercritical methanol with Cu/CuMgAlO_x catalyst. The yield of monomers reached 37.76C% with 240 min at 300 °C. Cyclohexanols were identified as the major monomeric products, indicating the occurrence of hydrodeoxygenation and hydrogenation. GPC, quant. ¹³C NMR, HSQC NMR, and HMBC NMR analyses evidenced the depolymerization of SL and upgrading of its derivatives Furthermore, the mechanistic studies were carried out to provide insights to the stubborn linkage cleavages. The degrees of difficulty to break up the three involved linkages obeyed the sequence of β-5 > 4-O-5 > α-O-4. The apparent activating energies (E_a), chemisorption energies (E_c), and bond dissociation energies (BDE) were determined computationally to support the exptl. results from the perspectives of kinetics, chemisorption, and thermodn., resp. This research provides a reliable way for the utilization of SL.

Fuel Processing Technology 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 C9H12O, Application In Synthesis of 645-56-7.

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

Han, Yue published the artcileCould preoxidation always promote the subsequent hydroconversion of lignin? Two counterexamples catalyzed by Cu/CuMgAlO_x in supercritical ethanol, SDS of cas: 645-56-7, the publication is Bioresource Technology (2021), 125142, database is CAplus and MEDLINE.

In this study, two counterexamples of lignin preoxidation-hydroconversion were reported. First, two lignin feedstocks were preoxidized with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) in acetonitrile with various dosages (15%, 30%, and 60%). Then, these preoxidized lignins (HELOs and MWLOs) were hydroconverted in supercritical ethanol catalyzed by Cu/CuMgAlO_x. Total yields from HELOs were all higher than those from HEL, indicating the good promotion of DDQ preoxidation on the subsequent hydroconversion of HELOs, especially with the DDQ dosage of 15%. Differently, the promotion effect of DDQ preoxidation on the hydroconversion of MWLOs depended on the DDQ dosage as well as the reaction time. Through the comparison of two counterexamples, this work bursted the myth that preoxidation can always promote the subsequent hydroconversion of lignin, revealed the influence of lignin property, preoxidation degree, and reaction conditions on the subsequent hydroconversion of preoxidized lignin, and presented the new insight into the preoxidation-hydroconversion strategy for lignin.

Bioresource Technology 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 C9H12O, SDS of cas: 645-56-7.

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

Tian, Zhipeng published the artcileHydrodeoxygenation of guaiacol as a model compound of pyrolysis lignin-oil over NiCo bimetallic catalyst: Reactivity and kinetic study, Name: 4-Propylphenol, the publication is Fuel (2022), 122034, database is CAplus.

Catalytic hydrodeoxygenation (HDO) is a popular route to upgrade the pyrolysis lignin-oil that is abundant of phenolic compounds, and the synergistic effect of bimetal enables to improve the catalytic activity significantly. In this work, a series of non-noble metal catalysts are synthesized and their HDO performances of guaiacol are compared. Optimized NiCo/SiO₂-ZrO₂ catalyst expresses a 100% conversion and a 99.9% selectivity of cyclohexane product, which is higher than those over Ni/SiO₂-ZrO₂ catalyst. Catalyst characterization results demonstrate that the interaction between Ni and Co promotes the reduction of metal site and the adsorption of hydrogen, which is the crucial factor during HDO process. Besides, the electron transfer from Co to Ni species weakens the C-O bond of substrate intermediate and results in its cleavage to transform cyclohexanol to cyclohexane. This is also the rate determining step in the HDO of guaiacol. Specific kinetic study is conducted to verify the reaction pathway and the structure-activity relationship. The HDO reaction of guaiacol on NiCo/SiO₂-ZrO₂ fits the first order kinetic model well. The apparent Ea of 55.9 kJ·mol^-1 is lower than those of the noble metal catalysts reported in previous studies. In addition, the upgrading of raw pyrolysis lignin-oil on this non-noble bimetallic catalyst also achieves a high HDO efficiency, with the hydrocarbon contents increased from 4.2% to 60.6%. The good HDO performance of this cheap and easy-prepared NiCo catalyst proves its promising potential in the upgrading of lignin-oil for the production of hydrocarbon fuels.

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 C7H5ClN2S, Name: 4-Propylphenol.

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

Shen, Changcheng published the artcileValorization of lignin in native corn stover via fractionation-hydrogenolysis process over cobalt-supported catalyst without external hydrogen, Related Products of alcohols-buliding-blocks, the publication is Molecular Catalysis (2021), 111832, database is CAplus.

Lignin, which represents the most abundant renewable aromatic biomass resource on the earth, is promising as an alternative for the production of chems. We presented a modified method that provides the hydrogen source in the reaction with a mixed solvent of alc., acid and water, replacing the original method that directly provides a hydrogen source with external hydrogen. In addition, a new cobalt supported on nitrogen doped carbon catalyst preparation method (one-pot) was presented. We proposed one-step method in which corn stover lignin is converted to target monomers over Co/AC-N_one-pot catalyst and mixed solvent. The role of the alc. to acid and water mixed solvent not only extract lignin fragments from the matrix but also provide the hydrogen source. Cobalt which has electronic interaction with the nitrogen reformed alcs. to obtain hydrogen and stabilized lignin intermediates during the reaction by hydrogenation of active bonds. Different kinds of nitrogen including pyridinic and pyrrolic nitrogen functional groups plays a critical role in stabilizing Co. Nearly complete delignification (91%) and high yield of target monomers (23.8%) can be obtained under the conditions (5wt% Co/Ac-N_one-pot, 10:1:1mixt. solvent consist of isopropanol/water/ formic acid, 235°C, 200 min, 0.1 MPa N₂), and the selectivity of target monomers was 85%. Circulation experiment of catalyst was performed directly without any operation of the residue, and it could maintain 90% activity in the first four cycles.

Molecular Catalysis 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 C15H20O6, Related Products of alcohols-buliding-blocks.

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