Category: 645-56-7

Zhu, Da-Liang published the artcileVisible-light-driven C(sp²)-H arylation of phenols with arylbromides enabled by electron donor-acceptor excitation, Related Products of alcohols-buliding-blocks, the publication is Chemical Communications (Cambridge, United Kingdom) (2022), 58(22), 3637-3640, database is CAplus and MEDLINE.

A catalyst-free visible-light-driven C(sp²)-H arylation of unprotected phenols ROH (R = Ph, naphthalen-2-yl, 3,5-dibromophenyl, etc.) with arylbromides R¹Br (R¹ = 4-cyclopropanecarbonylbenzen-1-yl, 2-cyanobenzen-1-yl, 3-cyano-5-(trifluoromethyl)phenyl, etc.) to give 2-arylated phenols RR¹ have been developed. This reaction proceeds through the excitation of an electron donor-acceptor complex between a phenolate and arylbromide, electron transfer, and debrominative C(sp²)-C(sp²) coupling.

Chemical Communications (Cambridge, United Kingdom) 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 C8H10BNO3, Related Products of alcohols-buliding-blocks.

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

Huang, Jinshu published the artcileLignin-derived layered 3D biochar with controllable acidity for enhanced catalytic upgrading of Jatropha oil to biodiesel, COA of Formula: C9H12O, the publication is Catalysis Today, database is CAplus.

Biochar materials have wide applications in soil improvement/remediation, water pollution control, gas storage, and heterogeneous catalysis, while usually suffering from low surface areas and harsh preparation conditions. In this study, a green, environmentally friendly, and low-cost biochar catalyst (PAP-MEPP-C) was prepared by thermochem. treatment of lignin-derived monomers at a low temperature (80 °C), and further developed for high-efficiency production of biodiesel from non-edible Jatropha oil (JO). The characterization results showed that the structure of the PAP-MEPP-C biochar catalyst was layered and 3D structure, and its acidity could be controlled by changing the monomeric composition The reaction conditions of preparing biodiesel catalyzed by PAP-MEPP-C were optimized by the response surface method, and the obtained maximum biodiesel yield was 97.2%. The kinetics of the (trans)esterification reaction over the developed biochar catalyst PAP-MEPP-C was studied, and its superior catalytic performance to other tested acid catalysts could be supported by a relatively lower activation energy (36 kJ mol^-1). In addition, the biochar catalyst was highly stable and could be recycled four times with more than 90% biodiesel yield.

Catalysis Today 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, COA of Formula: C9H12O.

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

Zhu, Da-Liang published the artcileNickel-Catalyzed Etherification of Phenols and Aryl Halides through Visible-Light-Induced Energy Transfer, Product Details of C9H12O, the publication is Organic Letters (2021), 23(21), 8327-8332, database is CAplus and MEDLINE.

A visible-light-initiated, nickel-catalyzed O-arylation of phenols with arylhalides using t-BuNH(i-Pr) as the base and thioxanthen-9-one as the photosensitizer under visible light was reported. This photocoupling exhibited a broad substrate scope.

Organic Letters 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 C9H8BNO3, Product Details of C9H12O.

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

Huang, Jinshu published the artcileA New Lamellar Biocarbon Catalyst with Enhanced Acidity and Contact Sites for Efficient Biodiesel Production, Product Details of C9H12O, the publication is Waste and Biomass Valorization, database is CAplus.

Biochar is a type of green, biodegradable, sustainable, and cheap carbon material, which is typically prepared by pyrolysis, gasification, and hydrothermal carbonization methods at relatively high temperatures (≤ 180 °C), but generally facing with small sp. surface areas and low acid d. In this study, lignin-derived monomers were explored as carbon sources to prepare porous biochars at a low temperature of 80 °C. The carbonaceous catalyst (PPR-SO₃H-80) was found to be composed of irregular particles accumulated by lamellar carbon, and have a large sp. surface area (165.2 m²/g) and good thermal stability. Meanwhile, PPR-SO3H-80 had a high d. of -SO₃H (3.56 mmol/g), which increases with the degree of carbon defects. Importantly, the co-existence of -OH and -COOH in a certain amount with -SO3H on PPR-SO3H-80 could significantly promote the production of biodiesel (up to 97.1% yield), as optimized by the response surface method (RSM). In addition, PPR-SO3H-80 exhibited good stability and could be recycled 4 times with biodiesel yield slightly decreasing to 90.3%. A new lamellar biochar catalyst with enhanced acidity and large surface area as well as co-existed -SO₃H, -OH and -COOH acidic species was facilely prepared and could efficiently produce biodiesel with a high yield of 97.1%.

Waste and Biomass Valorization 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

Diao, Xinyong published the artcileFabricating high temperature stable Mo-Co₉S₈/Al₂O₃ catalyst for selective hydrodeoxygenation of lignin to arenes, COA of Formula: C9H12O, the publication is Applied Catalysis, B: Environmental (2022), 121067, database is CAplus.

Achieving high-temperature stability/duration without compromising the activity remains an arduous task in catalyst design, particularly for MoS₂ materials. Herein, a robust catalyst with Mo doped Co₉S₈ nanoparticles anchored on Al₂O₃ matrix is fabricated, which could selectively convert lignin to arenes with high hydrodeoxygenation activity, selectivity and particularly excellent stability. In the hydrodeoxygenation of di-Ph ether, this catalyst afforded 99.8% conversion and 91.0% yield of benzene at 265°C for at least 10 reaction runs. The resultant Mo-Co₉S₈ structure with chem. connection by covalent bonds of Mo-S-Co type on the Co₉S₈ surface demonstrates strong ability in the adsorption and activation of oxygen-containing substrates, which enables the effective C-O cleavage while avoids undesirable hydrogenation of benzene ring. The superior stability and water-resistance at elevated temperature was attributed to the anchoring effect of Al₂O₃ matrix and “protection” of surface-rich Co₉S₈ species to the active Mo-Co₉S₈ center. This strategy provides new sights for the rational design of efficient and stable sulfide catalysts toward the applications in demanding high-temperature reactions.

Applied Catalysis, B: Environmental 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, COA of Formula: C9H12O.

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

Diao, Xinyong published the artcileRational design of oligomeric MoO₃ in SnO₂ lattices for selective hydrodeoxygenation of lignin derivatives into monophenols, Name: 4-Propylphenol, the publication is Journal of Catalysis (2021), 234-251, database is CAplus.

Novel Mo-Sn bimetallic oxide catalysts with highly dispersed oligomeric MoO₃ in SnO₂ lattices, which were synthesized by the co-precipitation method and pretreated by anhydrous ethanol, were first employed in the hydrodeoxygenation of various lignin derivatives to produce monophenols with high activity and selectivity. In comparison with the pure α-MoO₃ and the previous reported catalysts, the α-2Mo1Sn exhibited superior activity in the hydrodeoxygenation of guaiacol, with full conversion and 92.5% phenol yield at 300°C under 4 MPa initial H₂ pressure in n-hexane for 4 h. According to comprehensive characterizations and catalytic measurements, the excellent performance of α-2Mo1Sn was ascribed to the formation of abundant Sn-O-Mo-O_V interfacial sites, which possessed strong Mo-Sn interaction with enhanced surface area, electron-donating group binding ability, Lewis acidity, and redox ability. It was demonstrated that over the present α-2Mo1Sn catalyst system, the Sn-O-Mo-O_V interfacial sites could greatly facilitate the adsorption and activation of C_aromatic-OCH₃ and C_aromatic-CH₃ bonds, and thus significantly promote the demethoxylation and demethylation reaction to produce phenol. This work figures out the rational design of MoO₃-based catalyst and displays a clear potential for the selective hydrodeoxygenation of lignin derivatives into monophenols.

Journal of 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 C9H12O, Name: 4-Propylphenol.

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

Jaya, Gladys Tiffany published the artcileOne-pot conversion of lignocellulosic biomass to ketones and aromatics over a multifunctional Cu-Ru/ZSM-5 catalyst, Quality Control of 645-56-7, the publication is Applied Catalysis, B: Environmental (2022), 121368, database is CAplus.

The complete conversion of lignocellulosic biomass to selective and highly valuable chems. is challenging because of its inertness and complexity. Herein, we report a direct chemocatalytic route for the complete one-pot conversion of raw woody biomass to cyclic ketones and aromatic monomers over a multifunctional bi-metallic Cu-Ru catalyst on HZSM-5 (Cu-Ru/Z). The Si/Al ratio of HZSM-5 plays an effective role in the product distribution. High-yield ketones (60.9% based on carbon in holocellulose) and aromatics (28.4% based on carbon in lignin) were produced in an aqueous medium. Three strategies, metal domain encapsulation inside the zeolitic framework, SiO₂ layer coating, and carbon layer coating, were employed to overcome the weak hydrothermal stability associated with HZSM-5. The carbon-coated Cu-Ru/Z catalyst exhibited high stability up to three reaction cycles. Optimization of the reaction conditions, reaction mechanisms for the selective ketone synthesis, and catalyst deactivation mechanisms are discussed.

Applied Catalysis, B: Environmental 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, Quality Control of 645-56-7.

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

Stellato, Michael J. published the artcilePore blocking by phenolates as deactivation path during the cracking of 4-propylphenol over ZSM-5, HPLC of Formula: 645-56-7, the publication is Catalysts (2021), 11(6), 721, database is CAplus.

Cracking of Pr side chains from 4-propylphenol, a model compound for lignin monomers, is studied for a com. ZSM-5 zeolite catalyst. The decline of 4-propylphenol conversion with time on stream can be delayed by co-feeding water. FTIR spectroscopy shows the formation of chemisorbed phenolates during reactions and significant amounts of phenolics are detected by GC-MS of the extract from the spent catalysts. Thus, chemisorbed phenolates are identified as the main reason for deactivation in the absence of water. Regardless of the amount of co-fed water, substituted monoaroms. and polyaromatic species are formed. Comprehensive characterization of the spent catalysts including Raman and solid-state ²⁷Al NMR spectroscopy, and thermogravimetric anal. points to a combination of deactivation processes. First, phenolates bind to Lewis acid sites within the zeolite framework and hinder diffusion unless they are hydrolyzed by water. In addition, light olefins created during the cracking process react to form a polyaromatic coke that deactivates the catalyst more permanently.

Catalysts 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 C7H7ClN2S, HPLC of Formula: 645-56-7.

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

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