Tag: M.W=100-150

Yu, Mengmeng published the artcileVisible-light-promoted generation of hydrogen from the hydrolysis of silanes catalyzed by rhodium(III) porphyrins, Recommanded Product: Triethylsilanol, the publication is Organometallics (2015), 34(24), 5754-5758, database is CAplus.

Visible-light-promoted hydrolysis of hydrosilanes catalyzed by iodo[meso-tetrakis(4-methoxyphenyl)porphyrinato]rhodium [(TAP)Rh-I] to produce silanols and dihydrogen efficiently under mild conditions was reported. (TAP)Rh-H was observed as the key intermediate through stoichiometric activation of the Si-H bond by (TAP)Rh-I. Addition of water drove the stoichiometric activation of Si-H into catalysis.

Organometallics published new progress about 597-52-4. 597-52-4 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic Chain, name is Triethylsilanol, and the molecular formula is C38H24F4O4P2, Recommanded Product: Triethylsilanol.

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

Hill, Michael S. published the artcileSingle-source AACVD of composite cobalt-silicon oxide thin films, Category: alcohols-buliding-blocks, the publication is Inorganica Chimica Acta (2014), 47-56, database is CAplus.

A series of cobalt(II) complexes comprising either triorganosiloxide or tris(tert-butoxy)siloxide ligands were synthesized and characterized. A mononuclear constitution is enforced through the incorporation of bi- and tridentate N-donor ligands. The resultant 4- or 6-coordinate complexes were identified by single-crystal x-ray diffraction anal. and were assessed for their potential as mol. precursors to hybrid cobalt/silicon oxide thin film materials by TGA. A TMEDA adduct of the bis-ligated Co(II) tris(tert-butoxy)siloxide species was used as a single-source precursor for the AACVD of aesthetically attractive blue composite films. Anal. by PXRD, SEM, EDS and XPS indicated the production of amorphous, continuous films with the bulk compositions reflecting the cobalt, silicon and oxygen stoichiometry of the mol. precursor complex.

Inorganica Chimica Acta published new progress about 597-52-4. 597-52-4 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic Chain, name is Triethylsilanol, and the molecular formula is C6H16OSi, Category: alcohols-buliding-blocks.

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

Barker, Graeme published the artcileChirality Transfer in Gold(I)-Catalysed Direct Allylic Etherifications of Unactivated Alcohols: Experimental and Computational Study, Safety of 3,3,3-Trifluoropropan-1-ol, the publication is Chemistry – A European Journal (2015), 21(39), 13748-13757, database is CAplus and MEDLINE.

Gold(I)-catalyzed direct allylic etherifications have been successfully carried out with chirality transfer to yield enantioenriched, γ-substituted secondary allylic ethers. Our investigations include a full substrate-scope screen to ascertain substituent effects on the regioselectivity, stereoselectivity and efficiency of chirality transfer, as well as control experiments to elucidate the mechanistic subtleties of the chirality-transfer process. Crucially, addition of mol. sieves was found to be necessary to ensure efficient and general chirality transfer. Computational studies suggest that the efficiency of chirality transfer is linked to the aggregation of the alc. nucleophile around the reactive π-bound Au-allylic ether complex. With a single alc. nucleophile, a high degree of chirality transfer is predicted. However, if three alcs. are present, alternative proton transfer chain mechanisms that erode the efficiency of chirality transfer become competitive.

Chemistry – A European Journal published new progress about 2240-88-2. 2240-88-2 belongs to alcohols-buliding-blocks, auxiliary class Trifluoromethyl,Fluoride,Aliphatic hydrocarbon chain,Alcohol, name is 3,3,3-Trifluoropropan-1-ol, and the molecular formula is C3H5F3O, Safety of 3,3,3-Trifluoropropan-1-ol.

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

Graves, Brian M. published the artcileComprehensive characterization of mainstream marijuana and tobacco smoke, Application of 4-Propylphenol, the publication is Scientific Reports (2020), 10(1), 7160, database is CAplus and MEDLINE.

Recent increases in marijuana use and legalization without adequate knowledge of the risks necessitate the characterization of the billions of nanoparticles contained in each puff of smoke. Tobacco smoke offers a benchmark given that it has been extensively studied. Tobacco and marijuana smoke particles are quant. similar in volatility, shape, d. and number concentration, albeit with differences in size, total mass and chem. composition Particles from marijuana smoke are on average 29% larger in mobility diameter than particles from tobacco smoke and contain 3.4 times more total mass. New measurements of semivolatile fractions determined that >97% of the mass and volume of the particles from either smoke source are comprised of semivolatile compounds For tobacco smoke and marijuana smoke, resp., 4350 and 2575 different compounds are detected, of which 670 and 536 (231 in common) are tentatively identified, and of these, 173 and 110 different compounds (69 in common) are known to cause neg. health effects through carcinogenic, mutagenic, teratogenic, or other toxic mechanisms. This study demonstrates striking similarities between marijuana and tobacco smoke in terms of their phys. and chem. properties.

Scientific Reports 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 of 4-Propylphenol.

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 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

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

Liu, Haolan published the artcilePreparation of highly dispersed Cu catalysts from hydrotalcite precursor for the dehydrogenation of 1,4-butanediol, Quality Control of 111-29-5, the publication is Journal of Industrial and Engineering Chemistry (Amsterdam, Netherlands) (2021), 251-259, database is CAplus.

Copper-based catalysts are widely used in methanol synthesis, selective catalytic reduction of NOx, hydrogenation, dehydrogenation and hydrogenolysis reactions. In this work, a series of Cux/Zn₃–₀.₅xMg₃–₀.₅xAl₂O₉-x catalysts were prepared via the controlled calcination and reduction of hydrotalcite-like structured CuxZn₃–₀.₅xMg₃–₀.₅xAl₂(OH)₁₆CO₃ precursors. The formation process of Cu₂/Zn₂Mg₂Al₂O₇ from Cu₂Zn₂Mg₂Al₂(OH)₁₆CO₃ was characterized via several techniques. Characterizations results indicated that the dispersion of Cu in reduced Cu₂/Zn₂Mg₂Al₂O₇ reached 79.3%, and it exhibited excellent activity for the dehydrogenation of 1,4-butanediol (1,4-BDO) to γ-butyrolactone (GBL). The detected conversion of 1,4-BDO reached 99.2% with a 99.5% selectivity of GBL at 240°C, 0.1 MPa and LHSV-1 = 0.13 h, and the calculated productivity of GBL was 7.07 g-GBL/g-cat/h. And Cu₂/Zn₂Mg₂Al₂O₇ could maintain its activity within 50 h on stream.

Journal of Industrial and Engineering Chemistry (Amsterdam, Netherlands) published new progress about 111-29-5. 111-29-5 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ploymers, name is Pentane-1,5-diol, and the molecular formula is C5H12O2, Quality Control of 111-29-5.

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

Antinolo, M. published the artcilePhotochemistry of CF₃(CH₂)₂CHO in air: UV absorption cross sections between 230 and 340 nm and photolysis quantum yields at 308 nm, Recommanded Product: 3,3,3-Trifluoropropan-1-ol, the publication is Journal of Photochemistry and Photobiology, A: Chemistry (2012), 231(1), 33-40, database is CAplus.

This work constitutes the first study on the photochem. degradation process of CF₃(CH₂)₂CHO. First, the wavelength and temperature dependence of the UV absorption cross sections, σ_λ, was determined The n → π^* electronic transition band of C=O chromophore was characterized between 230 and 340 nm in the 269-323 K range. A hyperchromic effect was observed in the structured part of the band when the temperature decreases. The pulsed laser photolysis of a stationary mixture of CF₃(CH₂)₂CHO/cyclohexane (OH-scavenger)/air or N₂ was carried out at 308 nm. Online Fourier transform IR (FTIR) spectroscopy was employed to monitor the decay of CF₃(CH₂)₂CHO and to obtain the photolysis quantum yield as a function of total pressure (20.5-760 Torr). A slight curvature in the Stern-Volmer plot was observed at pressures lower than 75 Torr. At high pressures, the pressure dependence of can be described by a Stern-Volmer relationship. Photodissociation of CF₃(CH₂)₂CHO at 308 nm can produce HCO and CF₃(CH₂)₂ radicals , CF₃CH₂CH₃ and CO and CF₃(CH₂)₂CO radicals and H atoms. HCO radicals are rapidly converted into CO in the presence of O₂. Formation of CF₃CH₂CHO and CF₃CH₂CH₂OH evidences the importance of secondary chem. involving CF₃(CH₂)₂ radicals formed in channel . Further photodegradation of CF₃CH₂CHO yields mainly CF₃CHO. Small quantities of HC(O)OH were also detected. CF₃(CH₂)₂C(O)OH was only observed in the absence of OH-scavenger, implying that formation of CF₃(CH₂)₂CO radicals in channel is not an important photolysis pathway. Consequently, photodissociation of CF₃(CH₂)₂CHO in the actinic region is a source of shorter fluorinated oxygenated compounds, but it is not expected to be a source of fluorinated acids.

Journal of Photochemistry and Photobiology, A: Chemistry published new progress about 2240-88-2. 2240-88-2 belongs to alcohols-buliding-blocks, auxiliary class Trifluoromethyl,Fluoride,Aliphatic hydrocarbon chain,Alcohol, name is 3,3,3-Trifluoropropan-1-ol, and the molecular formula is C3H5F3O, Recommanded Product: 3,3,3-Trifluoropropan-1-ol.

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

Antinolo, Maria published the artcileAtmospheric removal of a series of fluoroalcohols and fluoroaldehydes: photochemistry initiated by OH radicals and sunlight, Category: alcohols-buliding-blocks, the publication is Trends in Photochemistry & Photobiology (2013), 89-103, database is CAplus.

A review. Hydrofluorocarbons (HFCs) are one of the alternatives to ozone-depleting chlorofluorocarbons (CFCs) in refrigeration, air conditioning and foam blowing. But their high global warming potentials (GWPs) have given rise to the concern that increased use and direct emissions of HFCs could have a significant impact on climate change. Some other CFC alternatives such as fluorinated alcs. (FAs) have been proposed in many industrial applications. The tropospheric photooxidation of FAs yields fluorinated aldehydes as secondary pollutants. To evaluate the tropospheric persistence of these species it is necessary to determine the rate coefficients of the main removal pathways in the gas-phase, namely UV photolysis and reaction with hydroxyl (OH) (J and k_OH, resp.). The tropospheric lifetimes (*au) of a species can be calculated from J and k_OH. In this article, the gas-phase kinetics of OH radicals with CF₃CH₂CH₂OH, CF₃(CH₂)₂CH₂OH, CF₃CF₂CH₂OH, CHF₂CF₂CH₂OH, CF₃CH₂CHO, CF₃(CH₂)₂CHO and CF₃CF₂CHO recently reported by our research group, as a function of temperature (263-359 K) and pressure (40-215 Torr of He), is reviewed. The determination of k_OH as a function of temperature was performed by Pulsed Laser Photolysis – Laser Induced Fluorescence (PLP – LIF). Furthermore, a photochem. study of the fluorinated compounds at 308 nm (in the actinic region) is also reviewed here, including the determination of the UV absorption cross sections (σ_λ) between 200 and 370 nm and photodissociation quantum yields by PLP at 308 nm coupled to Fourier transform IR (FTIR) spectroscopy (Φ_λ = 308nm). The formation of the photodegradation products initiated by absorption of UV radiation at 308 nm in a simulated clean atm. is also reviewed. It can be concluded that hydrofluorinated alcs. (HFAs) are suitable for replacing HFCs, since they are short-lived compounds that do not contribute to the Earth’s global warming. The degradation of these fluorocompounds is not expected to significantly contribute to air pollution in free-NO_x atmospheres.

Trends in Photochemistry & Photobiology published new progress about 2240-88-2. 2240-88-2 belongs to alcohols-buliding-blocks, auxiliary class Trifluoromethyl,Fluoride,Aliphatic hydrocarbon chain,Alcohol, name is 3,3,3-Trifluoropropan-1-ol, and the molecular formula is C3H5F3O, Category: alcohols-buliding-blocks.

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