Tag: M.W=100-150

Luo, Nianhua published the artcileHighly Selective Hydroxylation and Alkoxylation of Silanes: One-Pot Silane Oxidation and Reduction of Aldehydes/Ketones, Synthetic Route of 597-52-4, the publication is Organometallics (2020), 39(1), 165-171, database is CAplus.

An efficient chemoselective iridium-catalyzed method for the hydroxylation and alkoxylation of organosilanes to generate hydrogen gas and silanols or silyl ethers was developed. A variety of sterically hindered silanes with alkyl, aryl, and ether groups were tolerated. Furthermore, this atom-economical catalytic protocol can be used for the synthesis of silanediols and silanetriols. A one-pot silane oxidation and chemoselective reduction of aldehydes/ketones was also realized.

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 C6H16OSi, Synthetic Route of 597-52-4.

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

Wang, Dungai published the artcileLiBr-Catalyzed C3-Disulfuration between Indole and N-Dithiophthalimide, Recommanded Product: 2-Phenylethanethiol, the publication is Journal of Organic Chemistry, database is CAplus and MEDLINE.

A simple, green halide-catalyzed protocol for disulfuration of indole derivatives with N-dithiophthalimides was developed. This C-H disulfide reaction proceeded smoothly at room temperature with economical LiBr as catalyst, providing an effective method for the synthesis of novel unsym. disulfides. A series of 3-dithioindole derivatives were obtained in high yields with good functional group tolerance, moreover, the wide scope of Harpp reagents (aryl, benzyl, primary, secondary, tertiary) confirmed the practicability of this approach.

Journal of Organic Chemistry published new progress about 4410-99-5. 4410-99-5 belongs to alcohols-buliding-blocks, auxiliary class Thiol,Benzene, name is 2-Phenylethanethiol, and the molecular formula is C2H2N4O2, Recommanded Product: 2-Phenylethanethiol.

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

Kalinoski, Ryan M. published the artcileAntimicrobial Properties of Corn Stover Lignin Fractions Derived from Catalytic Transfer Hydrogenolysis in Supercritical Ethanol with a Ru/C Catalyst, HPLC of Formula: 645-56-7, the publication is ACS Sustainable Chemistry & Engineering (2020), 8(50), 18455-18467, database is CAplus.

Converting lignin to value added products at high yields provides an avenue for making ethanol biorefineries more profitable while reducing the carbon footprint of products generally derived from petroleum. In this study, corn stover lignin was depolymerized by catalytic transfer hydrogenolysis (CTH) in supercritical ethanol with a Ru/C catalyst. The lignin derived bio-oil was then sequentially extracted utilizing hexane, petroleum ether, chloroform and Et acetate as solvents in order of less polar to polar and the subsequent bio-oils were characterized using GPC, GC/MS and HSQC NMR. Results show lignin derived compounds were sequentially extracted into groups depending on the solvent polarity. Antimicrobial properties of the bio-oils were screened against Gram-pos. (Bacillus subtilis, Lactobacillus amylovorus, and Staphylococcus epidermidis), Gram-neg. (Escherichia coli) bacteria and yeast (Saccharomyces cerevisiae) by examining microbial growth inhibition. Results show that CTH derived bio-oils inhibited all tested organisms at concentrations less than 3 mg/mL. Total monomer concentration and the presence of specific monomers (i.e., syringyl propane) showed correlations to antimicrobial activity, likely due to cell death or membrane damage. This study provides insights into using sequential extraction to fractionate lignin-derived compounds and correlations between the properties of the extracted compounds and their antimicrobial activity. A lignin-based bio-oil was prepared from catalytic transfer hydrogenolysis of purified corn stover lignin with ethanol and a ruthenium on carbon catalyst. Polar and nonpolar solvents were used to sequentially extract different compounds The raw bio-oil and sequential extraction fractions exhibited antimicrobial properties against Gram-pos./neg. bacteria and yeast, with activity related to total monomer content and specific monomers.

ACS Sustainable Chemistry & Engineering 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, HPLC of Formula: 645-56-7.

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

Liu, Zhongyu published the artcileObservation of Core Phonon in Electron-Phonon Coupling in Au₂₅ Nanoclusters, Name: 2-Phenylethanethiol, the publication is Journal of Physical Chemistry Letters (2021), 12(6), 1690-1695, database is CAplus and MEDLINE.

Temperature-dependent optical properties are of paramount importance for fundamentally understanding the electron-phonon interactions and phonon modes in atomically precise nanocluster materials. In this work, low-temperature optical absorption spectra of the icosahedral [Au₂₅(SR)₁₈]^– nanocluster are measured from room temperature down to liquid helium temperature by adopting a thin-film-based technique. The thin-film measurement is further compared with results from the previous solution-based method. Interestingly, the previously missing core phonon is revealed by a quant. anal. of the film data through peak deconvolution and fitting of the temperature trend with a theor. model. The two lowest-energy absorption peaks (at 1.6 and 1.8 eV) of Au₂₅ are determined to couple with the staple-shell phonon (average energy ~350 cm^-1) in the solution state, but in the solid state these electronic transitions couple with the core phonon (average energy ~180 cm^-1). The suppression of the staple-shell phonon in the solid state is attributed to the intracluster and cluster-matrix interactions.

Journal of Physical Chemistry Letters published new progress about 4410-99-5. 4410-99-5 belongs to alcohols-buliding-blocks, auxiliary class Thiol,Benzene, name is 2-Phenylethanethiol, and the molecular formula is C8H10S, Name: 2-Phenylethanethiol.

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

Wang, Xinglin published the artcileEfficient visible light initiated hydrothiolations of alkenes/alkynes over Ir₂S₃/ZnIn₂S₄: Role of Ir₂S₃, Name: 2-Phenylethanethiol, the publication is Chinese Journal of Catalysis (2021), 42(3), 409-416, database is CAplus.

The hydrothiolations of alkynes/alkenes with thiols is an atom-economic and thus attractive method for the constructions of C-S bonds. Here, Ir₂S₃/ZnIn₂S₄ nanocomposites with varied Ir₂S₃ loadings were obtained by one-pot solvothermal method from ZnCl₂, InCl₃ and thioacetamide with IrCl₃. The loading of Ir₂S₃ on the surface of ZnIn₂S₄ promoted the hydrothiolations of alkenes and alkynes, with an optimum performance observed over 0.5 mol% Ir₂S₃/ZnIn₂S₄ nanocomposite. Based on the studies on the performance of several other cocatalysts (MoS₂, NiS and Pd) loaded ZnIn₂S₄ and the EIS analyses, it was proposed that the superior performance over Ir₂S₃/ZnIn₂S₄ nanocomposite can be ascribed to an improved efficiency on the photogeneration of the thiyl radicals by loading Ir₂S₃ as well as its inactivity for photocatalytic hydrogen evolution, a side reaction in the light-initiated hydrothiolation reaction over ZnIn₂S₄. This study not only demonstrates an efficient and green strategy to synthesize thiolated products under visible light based on semiconductor photocatalysis, but also provides some guidance for the design and development of photocatalytic systems for light-induced organic syntheses.

Chinese Journal of Catalysis published new progress about 4410-99-5. 4410-99-5 belongs to alcohols-buliding-blocks, auxiliary class Thiol,Benzene, name is 2-Phenylethanethiol, and the molecular formula is C12H14BNO2, Name: 2-Phenylethanethiol.

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

Xu, Jian published the artcileA water-soluble BODIPY derivative as a highly selective “Turn-On” fluorescent sensor for H₂O₂ sensing in vivo, Product Details of C6H13BO3, the publication is Biosensors & Bioelectronics (2014), 58-63, database is CAplus and MEDLINE.

A type of BODIPY derivatives was designed and synthesized by the N-alkylation reaction of meso-(4-pyridinyl)-substituted BODIPY. The water-solubility of entire mol. was improved to a large extent as a result of the formation of cationic quaternary ammonium salt, while the strong fluorescence inherent to the BODIPY dye fragment is extinguished on alkylation of the pyridine N atom due to the photo-induced electron transfer (PET) process. The N-alkylated BODIPY derivative 4, as a novel water-soluble “Turn-On” fluorescent probe for the discrimination of H₂O₂, was constructed by incorporating 4-(Bromomethyl)benzeneboronic acid pinacol ester moiety, which showed highly selective fluorescent response to H₂O₂ against other interferences of ROS and RNS species under physiol. conditions, and the reaction mechanism of boronate oxidation was con by ¹H NMR, mass spectrum and optical spectroscopy anal. As a biocompatible probe in biol. systems, probe 4 was successfully applied for monitoring and imaging of H₂O₂ both in vitro and in vivo using HepG2/LO2 cells and angelfish.

Biosensors & Bioelectronics published new progress about 25240-59-9. 25240-59-9 belongs to alcohols-buliding-blocks, auxiliary class Boronic acid and ester,Boronic Acids,Boronate Esters, name is 4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-ol, and the molecular formula is C24H29N5O3, Product Details of C6H13BO3.

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

Feng, Zujian published the artcileSuperhydrophilic fluorinated polymer and nanogel for high-performance ¹⁹F magnetic resonance imaging, Formula: C3H5F3O, the publication is Biomaterials (2020), 120184, database is CAplus and MEDLINE.

¹⁹F magnetic resonance imaging (¹⁹F MRI), a kind of non-invasive and non-radioactive diagnostic technique with no endogenous background signals, opens up new research avenues for accurate mol. imaging studies. However, ¹⁹F MRI is manily limited by the performance of contrast agents. Here, for the first time, we presented the zwitterionic fluorinated polymer and nanogel as new types of superhydrophilic, sensitive and ultra-stable ¹⁹F MRI contrast agents. The superhydrophilicity of carboxybetaine zwitterionic structure completely overcame the hydrophobic aggregation-induced signal attenuation associated with amphiphilic fluorinated polymer-based nanoprobes. In addition, the superhydrophilic contrast agent exhibited distinct advantages, including high ¹⁹F-content (19.1 wt%), superior resistance to protein adsorption, constant MR properties and ¹⁹F MRS-based quant. determination in complex biol. fluids, and intense ¹⁹F MRI signals in the whole-body images after i.v. injection. In combination with angiogenesis targeting ligand, the superhydrophilic contrast agent was applied for the unambiguous detection of tumor. Importantly, computational algorithm was established for the directly quant. determination of bioavailability and tumor-to-whole body ratio (TBR) from the in vivo¹⁹F MRI dataset, providing real-time information with non-invasive manner. Finally, crosslinked nanogels were developed with significantly prolonged systemic circulation, of which intense ¹⁹F MRI signals nonspecifically distributed in the aortaventralis and blood-rich organs, instead of being trapped steadily in liver as with the state-of-the-art superhydrophobic perfluocarbon nanoemulsions. Overall, this kind of superhydrophilic, zwitterionic fluorinated polymer and nanogel could be defined as a new generation of high-performance ¹⁹F MRI contrast agents, which hold great potential for image-based unambiguous disease detection and computational quantification.

Biomaterials 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, Formula: C3H5F3O.

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

Luo, Bowen published the artcileBoric Acid as a Novel Homogeneous Catalyst Coupled with Ru/C for Hydrodeoxygenation of Phenolic Compounds and Raw Lignin Oil, Formula: C9H12O, the publication is Industrial & Engineering Chemistry Research (2020), 59(39), 17192-17199, database is CAplus.

Simple and efficient catalytic routes have been explored to upgrade the raw lignin oil. Though homogeneous catalysis is easy to operate and possesses a high reaction rate, it also suffers from the difficulty of product separation In this work, we used H₃BO₃ as a novel homogeneous catalyst coupled with Ru/C to overcome the separation problem and carry out the hydrodeoxygenation (HDO) of phenolic compounds and raw lignin oil. H₃BO₃ showed an outstanding performance over the liquid organic and mineral acids, with a good catalyst recyclability. Phenolic model compounds including monomers and dimers can be efficiently converted into cycloalkanes with yields close to 100%. Moreover, the raw lignin oil also had a good HDO result by using this bifunctional catalyst (H₃BO₃ and Ru/C). The content of hydrocarbons increased from 7.9% to 93.1% at 260°C, which promoted the upgraded lignin oil capable to be used as fuel directly.

Industrial & Engineering Chemistry Research 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, Formula: C9H12O.

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

Shu, Riyang published the artcileEnhanced adsorption properties of bimetallic RuCo catalyst for the hydrodeoxygenation of phenolic compounds and raw lignin-oil, Safety of 4-Propylphenol, the publication is Chemical Engineering Science (2020), 115920, database is CAplus.

The synergistic effect of two metal species in bimetallic catalysts can promote the catalytic performances significantly, and the enhanced adsorption properties by the interaction between two metal species play an important role. In this study, we investigated the hydrodeoxygenation (HDO) performance of a bimetallic RuCo/SiO₂-ZrO₂ catalyst, paying close attention to its adsorption properties based on the exptl. and modeling study. RuCo catalyst presented a strong interaction between two metal species and electrons transfer from Ru to Co, which led to a higher spin-up d-band center value of surface atoms and thereby a different adsorption property from the monometallic catalysts. The good adsorption of hydrogen and substrate in RuCo catalyst played a crucial role on triggering the occurrence of HDO reaction for a better performance, which was also confirmed by the DFT calculation This catalyst performed well on the HDO of guaiacol, other phenolic compounds and raw lignin-oil.

Chemical Engineering Science 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 C6H20Cl2N4, Safety of 4-Propylphenol.

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