Tag: M.W=100-150

Dimitrova, Maria published the artcileReactivity descriptors for the hydrogen bonding ability of aliphatic alcohols, HPLC of Formula: 2240-88-2, the publication is Journal of Molecular Structure (2003), 657(1-3), 317-324, database is CAplus.

A series of 18 aliphatic alcs. and their hydrogen-bonded complexes with ammonia are studied by applying d. functional theory computations at the B3LYP/631G(d,p) level. Theor. determined electronic parameters-partial at. charges and electrostatic potential at nuclei (EPN)-are employed to characterize the reactivity of the monomer alcs. The variations of binding energy are also interpreted in terms of the well-known exptl. solvatochromic parameters, α. It is shown that both the exptl. α constants and EPN values characterize quant. the reactivity of the studied mols. toward the complexation process. A linear link between α constants and EPN values was also found.

Journal of Molecular Structure 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, HPLC of Formula: 2240-88-2.

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

Sandanayake, K. R. A. Samankumara published the artcileMolecular fluorescence sensor for saccharides based on amino coumarin, Name: 3-(Methylamino)phenol, the publication is Chemistry Letters (1995), 139-40, database is CAplus.

The intramol. neighboring group interaction of the amino group of the 7-aminocoumarin moiety with phenylboronic acid gave fluorescence intensity and spectral changes upon saccharide binding which could be used in fluorescence mapping of saccharides in biol. cells.

Chemistry Letters published new progress about 14703-69-6. 14703-69-6 belongs to alcohols-buliding-blocks, auxiliary class Amine,Benzene,Phenol, name is 3-(Methylamino)phenol, and the molecular formula is C7H9NO, Name: 3-(Methylamino)phenol.

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

Hayashi, Mikihiro published the artcileAchievement of a Highly Rapid Bond Exchange for Self-Catalyzed Polyester Vitrimers by Incorporating Tertiary Amino Groups on the Network Strands, HPLC of Formula: 111-29-5, the publication is ACS Applied Polymer Materials (2021), 3(9), 4424-4429, database is CAplus.

Herein, we describe the preparation of a self-catalyzed polyester vitrimer containing tertiary amino groups on the network strands that overcomes the significantly slow bond exchange often encountered in the reported systems. Starting from a polyester precursor bearing both carboxy and tertiary amino side groups, a selective reaction of the carboxyl groups with diepoxy cross-linkers affords a network that possesses hydroxy and tertiary amino groups. The tertiary amino groups on the network strands effectively work as internal catalysts for the trans-esterification bond exchange. Because of the high mobility of the incorporated internal amine catalyst, the bond exchange in the vitrimer material was much more rapid (more than 20 times) than that in reported self-catalyzed polyester vitrimers.

ACS Applied Polymer Materials 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, HPLC of Formula: 111-29-5.

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

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

Dong, Chunwei published the artcile[Cu₃₆H₁₀(PET)₂₄(PPh₃)₆Cl₂] Reveals Surface Vacancy Defects in Ligand-Stabilized Metal Nanoclusters, Category: alcohols-buliding-blocks, the publication is Journal of the American Chemical Society (2021), 143(29), 11026-11035, database is CAplus and MEDLINE.

Precise identification and in-depth understanding of defects in nanomaterials can aid in rationally modulating defect-induced functionalities. However, few studies have explored vacancy defects in ligand-stabilized metal nanoclusters with well-defined structures, owing to the substantial challenge of synthesizing and isolating such defective metal nanoclusters. Herein, a novel defective copper hydride nanocluster, [Cu₃₆H₁₀(PET)₂₄(PPh₃)₆Cl₂] (Cu36; PET: phenylethanethiolate; PPh₃: triphenylphosphine), is successfully synthesized at the gram scale via a simple one-pot reduction method. Structural anal. reveals that Cu36 is a distorted half cubic nanocluster, evolved from the perfect Nichol’s half cube. The two surface copper vacancies in Cu36 are found to be the principal imperfections, which result in some structural adjustments, including copper atom reconstruction near the vacancies as well as ligand modifications (e.g., substitution, migration, and exfoliation). D. functional theory calculations imply that the above-mentioned defects have a considerable influence on the electronic structure and properties. The modeling suggests that the formation of defective Cu36 rather than the perfect half cube is driven by the enlargement of the energy gap between the HOMO and the LUMO of the nanocluster. The structural evolution induced by the surface copper atom vacancies provides atomically precise insights into the defect-induced readjustment of the local structure and introduces new avenues for understanding the chem. of defects in nanomaterials.

Journal of the American Chemical Society 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, Category: alcohols-buliding-blocks.

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

Nematulloev, Saidkhodzha published the artcile[Cu₁₅(PPh₃)₆(PET)₁₃]²⁺: a Copper Nanocluster with Crystallization Enhanced Photoluminescence, Name: 2-Phenylethanethiol, the publication is Small (2021), 17(27), 2006839, database is CAplus and MEDLINE.

Due to their atomically precise structure, photoluminescent copper nanoclusters (Cu NCs) have emerged as promising materials in both fundamental studies and technol. applications, such as bio-imaging, cell labeling, phototherapy, and photo-activated catalysis. In this work, a facile strategy is reported for the synthesis of a novel Cu NCs coprotected by thiolate and phosphine ligands, formulated as [Cu₁₅(PPh₃)₆(PET)₁₃]²⁺, which exhibits bright emission in the near-IR (NIR) region (≈720 nm) and crystallization-induced emission enhancement (CIEE) phenomenon. Single crystal x-ray crystallog. shows that the NC possesses an extraordinary distorted trigonal antiprismatic Cu₆ core and a, unique among metal clusters, “tri-blade fan”-like structure. An in-depth structural investigation of the ligand shell combined with d. functional theory calculations reveal that the extended C-H···π and π-π intermol. ligand interactions significantly restrict the intramol. rotations and vibrations and, thus, are a major reason for the CIEE phenomena. This study provides a strategy for the controllable synthesis of structurally defined Cu NCs with NIR luminescence, which enables essential insights into the origins of their optical properties.

Small 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

Gong, Jun published the artcileIodization-enhanced fluorescence and circularly polarized luminescence for dual-readout probe design, Recommanded Product: 2-Phenylethanethiol, the publication is Sensors and Actuators, B: Chemical (2021), 130610, database is CAplus.

Circularly polarized luminescence (CPL) is a preferential emission from chiral systems. Introducing CPL to traditional small fluorescence probes will greatly enhance selectivity and sensitivity due to avoiding the background fluorescence. Small-mol. probes are practically useful for bioimaging and sensing but always suffer from weak CPL properties. To optimize chiral perturbation, the study of structure-CPL correlation is an urgent necessity. Here, we investigated the influence of 3, 3′-substituent of BINOL on optical properties and found that iodization could significantly enhance the fluorescence quantum yield (Φ_F) and dissymmetry factor (|g_lum|). Based on this finding, we presented a strategy to design dual-readout probes emiting both robust total fluorescence and CPL upon activation. As an application example, we first designed a pair of thiols probes, R/S-P1, with the fluorescence readout showing good linear response to cysteine, and CPL signal displaying significant enhancement with |g_lum| from undetectable value to 0.7 x 10^-3.

Sensors and Actuators, B: Chemical 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, Recommanded Product: 2-Phenylethanethiol.

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

Wu, Xing-De published the artcileDesign, synthesis and structural-activity relationship studies of phanginin A derivatives for regulating SIK1-cAMP/CREB signaling to suppress hepatic gluconeogenesis, Name: Pentane-1,5-diol, the publication is European Journal of Medicinal Chemistry (2022), 114171, database is CAplus and MEDLINE.

Persistent activation of hepatic gluconeogenesis is a main cause of fasting hyperglycemia in patients with type 2 diabetes (T2D), and the salt-induced kinase 1 (SIK1) acts as a key modulator in regulating hepatic gluconeogenesis. Recently, we first reported phanginin A (PA, 1), a natural cassane diterpenoid isolated from the seeds of Caesalpinia sappan, exhibited potent anti-diabetic effect through activation of SIK1 and increasing PDE4 activity to inhibit hepatic gluconeogenesis pathway by suppressing the cAMP/PKA/CREB pathway in the liver. In present study, we designed and prepared 25 PA derivatives and their structure-activity relationship (SAR) for gluconeogenesis inhibitory activity were established. Among them, compound I exhibited remarkable inhibitory activity on hepatic gluconeogenesis by enhancing the SIK1 phosphorylation and ameliorated the hyperglycemia of type 2 diabetic mice. Our results supported that compound I could be served as a potential candidate for the treatment of T2D.

European Journal of Medicinal Chemistry 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 C16H24BF4Ir, Name: Pentane-1,5-diol.

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

Waterland, R. L. published the artcileGas phase UV and IR absorption spectra of CF₃CH₂CH₂OH and F(CF₂CF₂)_xCH₂CH₂OH (χ = 2, 3, 4), Safety of 3,3,3-Trifluoropropan-1-ol, the publication is Journal of Fluorine Chemistry (2005), 126(9-10), 1288-1296, database is CAplus.

The UV and IR spectra of CF₃CH₂CH₂OH and F(CF₂CF₂)_xCH₂CH₂OH (χ = 2, 3, 4) were studied using computational and exptl. techniques. Computational methods were used to show that CF₃CH₂CH₂OH and F(CF₂CF₂)_xCH₂CH₂OH (χ = 2, 3) have UV absorption at λ = 140-175 nm. Photolysis is therefore not a significant environmental loss mechanism for fluorinated alcs. Exptl. methods were used to record IR spectra for CF₃CH₂CH₂OH and F(CF₂CF₂)_xCH₂CH₂OH (χ = 2, 3, 4) at spectral resolutions of 0.004-0.5 cm^-1 with, and without, 700 torr of air diluent. There was no discernable effect of total pressure or spectral resolution over the range studied. Calculated IR spectra agreed with those measured exptl., and were used to assign the IR spectra.

Journal of Fluorine 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 C12H25Br, Safety of 3,3,3-Trifluoropropan-1-ol.

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