Tag: M.W=250-300

Choi, Ji-Ae published the artcileCycling performance of a lithium-ion polymer cell assembled by in-situ chemical cross-linking with fluorinated phosphorus-based cross-linking agent, Application of 2,2′-((Perfluoroethane-1,2-diyl)bis(oxy))bis(2,2-difluoroethanol), the publication is Journal of Power Sources (2010), 195(18), 6177-6181, database is CAplus.

Li-ion polymer cells composed of a C anode and a LiCoO₂ cathode are assembled with a gel polymer electrolyte cured by in-situ chem. crosslinking with novel crosslinking agents. The strong interfacial adhesion between the electrodes and the porous polyethylene membrane by the chem. crosslinking results in the stable capacity retention of the cell. A reduction in the ionic mobility in both the electrolyte and the electrodes adversely affects the high rate performance of the cell. These results imply that proper control of the crosslinking d. in the cell is imperative for achieving good capacity retention and high rate performance of the cell.

Journal of Power Sources published new progress about 129301-42-4. 129301-42-4 belongs to alcohols-buliding-blocks, auxiliary class Fluoride,Aliphatic hydrocarbon chain,Alcohol,Ether, name is 2,2′-((Perfluoroethane-1,2-diyl)bis(oxy))bis(2,2-difluoroethanol), and the molecular formula is C6H6F8O4, Application of 2,2′-((Perfluoroethane-1,2-diyl)bis(oxy))bis(2,2-difluoroethanol).

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

Albagli, A. published the artcileRate of ionization of some aromatic hydrocarbons in ethanolic dimethyl sulfoxide, COA of Formula: C19H14O2, the publication is Canadian Journal of Chemistry (1974), 52(7), 1059-61, database is CAplus.

The rates of detritiation of triphenylmethane, 9-phenylxanthene, fluorene, 9-ethylfluorene, 9-phenylfluorene, and 2,3-benzofluorene are measured in ethanolic Me2SO containing NaOEt. When the logarithm of the ionization rate is plotted against the logarithm of the ionization rate of Me2SO a straight line of near-to-unit slope is obtained in each case. There are significant differences, however, between relative ionization rates and equilibrium acidities.

Canadian Journal of Chemistry published new progress about 596-38-3. 596-38-3 belongs to alcohols-buliding-blocks, auxiliary class Other Aromatic Heterocyclic,Benzene,Alcohol, name is 9-Phenyl-9H-xanthen-9-ol, and the molecular formula is C19H14O2, COA of Formula: C19H14O2.

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

Barton, Benita published the artcileSynthesis and assessment of compounds trans-N,N’-bis(9-phenyl-9-xanthenyl)cyclohexane-1,4-diamine and trans-N,N’-bis(9-phenyl-9-thioxanthenyl)cyclohexane-1,4-diamine as hosts for potential xylene and ethylbenzene guests, Application of 9-Phenyl-9H-xanthen-9-ol, the publication is Journal of Inclusion Phenomena and Macrocyclic Chemistry (2019), 93(3-4), 333-346, database is CAplus.

In this work, two novel compounds, trans-N,N’-bis(9-phenyl-9-xanthenyl)cyclohexane-1,4-diamine 1 and trans-N,N’-bis(9-phenyl-9-thioxanthenyl)cyclohexane-1,4-diamine 2, were designed and successfully synthesized in our laboratories, and assessed for their host potential in the presence of potential xylene (Xy) isomer and ethylbenzene (EB) guests. Host 1 successfully formed complexes with all four of o-Xy, m-Xy, p-Xy and EB, while 2 only clathrated p-Xy and EB. Equimolar guest/guest competition experiments showed that hosts 1 and 2 possess very similar selectivities for these guests [p-Xy (73.9%) > EB (13.0%) > m-Xy (8.1%) > o-Xy (5.0%) and p-Xy (71.3%) > EB (20.2%) > m-Xy (6.0%) > o-Xy (2.5%) for 1 and 2, resp.]. Single crystal diffraction analyses revealed striking geometry changes for the sulfur host analog: while the tricyclic fused ring system of the oxygen host remained planar when guest was absent or present, this fused system of the sulfur analog experienced a dramatic geometry change from buckled (in the absence of guest) to planar (in guest presence). This observation explained the selectivity similarities of both hosts in the presence of these guests. Addnl., the relative thermal stabilities of the four complexes with host 1 were assessed by employing thermal analyses, and the results of these correlated exactly with the selectivity order, since the onset temperature of the guest release processes (Ton) was in the order p-Xy (88.0 °C) > EB (70.9 °C) > m-Xy (59.7 °C) > o-Xy (46.2 °C). Ton values also explained the significant preference of host 2 for p-Xy (115.5 °C) relative to EB (76.6 °C), resp.

Journal of Inclusion Phenomena and Macrocyclic Chemistry published new progress about 596-38-3. 596-38-3 belongs to alcohols-buliding-blocks, auxiliary class Other Aromatic Heterocyclic,Benzene,Alcohol, name is 9-Phenyl-9H-xanthen-9-ol, and the molecular formula is C19H14O2, Application of 9-Phenyl-9H-xanthen-9-ol.

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

Barton, Benita published the artciletrans-N,N’-Bis(9-phenyl-9-xanthenyl)cyclohexane-1,2-diamine and its thioxanthenyl derivative as potential host compounds for the separation of anilines through host-guest chemistry principles, COA of Formula: C19H14O2, the publication is Journal of Inclusion Phenomena and Macrocyclic Chemistry (2020), 97(3-4), 159-174, database is CAplus.

In this work, we investigate the potential of separating mixtures of the guest solvents aniline (ANI), N-methylaniline (NMA) and N,N-dimethylaniline (DMA) by means of host-guest chem. principles employing two novel host compounds, namely trans-N,N’-bis(9-phenyl-9-xanthenyl)cyclohexane-1,2-diamine (1,2-DAX) and trans-N,N’-bis(9-phenyl-9-thioxanthenyl)cyclohexane-1,2-diamine (1,2-DAT). These aniline solvents may exist in such mixtures since NMA and DMA are often prepared from ANI by alkylation methods, and reaction yields are seldom quant. Owing to their similar b.ps., ranging from 184 to 196°C, the more usual distillation techniques for their separation are challenging. After recrystallization experiments of the two host compounds from various combinations of these anilines, it was revealed that host-guest chem. certainly has the potential to serve as an alternative separation strategy for such mixtures Equimolar ANI/DMA solutions proved most successful, where both 1,2-DAX and 1,2-DAT showed near-quant. selectivity for DMA (90%). Both single crystal diffraction and thermal analyses were employed in order to understand the preferential behavior displayed by each host compound

Journal of Inclusion Phenomena and Macrocyclic Chemistry published new progress about 596-38-3. 596-38-3 belongs to alcohols-buliding-blocks, auxiliary class Other Aromatic Heterocyclic,Benzene,Alcohol, name is 9-Phenyl-9H-xanthen-9-ol, and the molecular formula is C19H14O2, COA of Formula: C19H14O2.

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

Lee, Minhan published the artcileModular Tuning of Electrophilic Reactivity of Iridium Nitrenoids for the Intermolecular Selective α-Amidation of β-Keto Esters, COA of Formula: C12H20O6, the publication is Journal of the American Chemical Society (2020), 142(28), 11999-12004, database is CAplus and MEDLINE.

Ir-catalyzed intermol. amino group transfer to β-keto esters (amides) to α-aminocarbonyl products with excellent chemoselectivity was reported. The key strategy was engineered electrophilicity of the putative Ir-nitrenoids by tuning electronic property of the κ²-N,O chelating ligands, thus facilitated nucleophilic addition of enol π-bonds of 1,3-dicarbonyl substrates.

Journal of the American Chemical Society published new progress about 20880-92-6. 20880-92-6 belongs to alcohols-buliding-blocks, auxiliary class Other Aliphatic Heterocyclic,Chiral,Alcohol, name is ((3aS,5aR,8aR,8bS)-2,2,7,7-Tetramethyltetrahydro-3aH-bis([1,3]dioxolo)[4,5-b:4′,5′-d]pyran-3a-yl)methanol, and the molecular formula is C12H20O6, COA of Formula: C12H20O6.

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

Jia, Yaya published the artcileEnhancing mechanical, thermal property and flame retardancy of optical polythiourethane with self-assembly phosphazene nanoparticles, Quality Control of 80-09-1, the publication is Polymer Composites (2022), 43(4), 2010-2021, database is CAplus.

Polythiourethane (PTU) has attracted considerable attention in engineering building materials. Here, based on phosphazene nanoparticles (PZS-1 and PZS-2) prepared by water-triggered and ultrasonic self-assembly method, phosphazene/polythiourethane (PZS/PTU) composites with excellent mech. strength, high flame retardancy and good transparency was obtained. Then, the comprehensive properties of both composites were evaluated, where PZS-2 endowed PTU with better overall performance. Due to the good dispersibility of PZS and its strengthed interfacial interaction with PTU matrix, both PZS significantly enhanced mech. and thermal property of PTU, where the tensile strength and glass transition temperature of PZS/PTU composites reached to 84.34 MPa and 59.94°C resp. More importantly, compared to pure PTU, the values of peak heat release rate (HRR), total heat release rate (THR), smoke production rate (SPR), and total smoke production (TSP) of composites were decreased by 10.5%, 13.3%, 30.6% and 18.0%, resp. The limiting oxygen index of composites was improved to 21.39% due to the catalytic carbonization of PZS, the expanded carbon layer and the incombustible gases released during combustion. Meanwhile, the PZS/PTU composite exhibited the high refractive index of 1.6580 and good transparency (not less than 85% at 500 nm). The PZS/PTU composite was promising candidates for optical flame retardant coatings and engineering building materials.

Polymer Composites published new progress about 80-09-1. 80-09-1 belongs to alcohols-buliding-blocks, auxiliary class Ploymers, name is 4,4′-Sulfonyldiphenol, and the molecular formula is C12H10O4S, Quality Control of 80-09-1.

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

Jia, Yaya published the artcileZirconium dioxide@phosphazene for enhancing mechanical property, flame retardancy, and thermal property of polythiourethane composites, Application In Synthesis of 80-09-1, the publication is Journal of Applied Polymer Science (2022), 139(22), 52230, database is CAplus.

Introducing high strength inorganic nanoparticles has emerged as an effective strategy to optimize the comprehensive properties of polymers, but good dispersion must be maintained to avoid clustering of inorganic nanoparticles. We report a novel phosphazene-coated ZrO₂ nanoparticles (ZrO₂@PZS) prepared by a simple ultrasonic method to further enhance thermal, mech., optical properties and flame retardancy of polythiourethane (PTU). ZrO₂@PZS nanoparticles presented good dispersion in composites, with regular spherical core-shell structures exhibiting significant enhancement effects for overall performance of PTU composites, through strong interfacial interaction. Studies revealed that regular spherical ZrO₂@PZS strengthened thermal and tensile properties of PTU, which reached 62.8°C and 79.28 MPa resp. More importantly, PTU composites showed good flame retardancy through catalytic carbonization, condensed phase shielding and gas phase dilution effect of ZrO₂@PZS, where the limiting oxygen index was increased to 25.39% from 20.39%. Moreover, the peak heat release rate, total heat release and smoke production rate could be reduced by 23.5%, 27.7% and 40.0%, resp. In brief, PTU composites show excellent potential in high strength special fireproof lenses.

Journal of Applied Polymer Science published new progress about 80-09-1. 80-09-1 belongs to alcohols-buliding-blocks, auxiliary class Ploymers, name is 4,4′-Sulfonyldiphenol, and the molecular formula is C12H10O4S, Application In Synthesis of 80-09-1.

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

Tan, Xuerong published the artcileDevelopment and Validation of a Modified QuEChERS Method for the Analysis of Bisphenols in Meats by UPLC-MS/MS, Recommanded Product: 4,4′-Sulfonyldiphenol, the publication is Chromatographia (2022), 85(5), 433-445, database is CAplus.

Abstract: A reliable and affordable QuEChERS (quick, easy, cheap, effective, rugged, and safe) methodol. in combination with ultra-high performance liquid chromatog.-tandem mass spectrometry (UPLC-MS/MS) was successfully developed and validated for the determination of eight bisphenols (BPs) residues containing in meats (chicken, duck, beef, pork, fish, shrimp, and mutton). A novel QuEChERS method optimization was carried out in terms of process efficiency (PE), matrix effect (ME), and extraction recovery (RE). After a simple vortex extraction of the samples with acetonitrile, 1 g sodium acetate was used for salting out (NaAC), and 100 mg primary secondary amine (PSA) purifying reagents were used for purification The properties of the sorbents were assessed by the obtained parameters, such as matrix effect (ME), linearity, sensitivity, accuracy, and precision. Under the optimal conditions, BPs were well separated on an ACQUITY UPLC BEH C₁₈ column in 8 min by gradient elution, and exhibited a good linear relationship (R² > 0.9988) in the linear range. Moreover, the limits of detection (LODs) and the limits of quantification (LOQs) were located in the range of 0.01- 0.11μg/kg and 0.03 – 0.37μg/kg, resp. The developed method was satisfactory in terms of accuracy (relative recoveries: 76.1% – 113.7%) and precision (relative standard deviations below 10.3%). Finally, the developed method was successfully employed to identify and quantify BPs residues in 28 real meat samples. The proposed QuEChERS-UPLC-MS/MS method is simple, high efficiency, cost-effective, practical, and susceptible to being implemented in routine laboratories to quickly detect the BPs in meats (chicken, duck, beef, pork, fish, shrimp, and mutton). In this sense, the method is useful for obtaining BPs residue data to evaluate the contamination status of BPs in meat food and provide scientific support for scientific supervision.

Chromatographia published new progress about 80-09-1. 80-09-1 belongs to alcohols-buliding-blocks, auxiliary class Ploymers, name is 4,4′-Sulfonyldiphenol, and the molecular formula is C10H2F12NiO4, Recommanded Product: 4,4′-Sulfonyldiphenol.

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

Sguazzin, Matthew A. published the artcileHexafluoroisopropyl Sulfamate: A Useful Reagent for the Synthesis of Sulfamates and Sulfamides, Name: ((3aS,5aR,8aR,8bS)-2,2,7,7-Tetramethyltetrahydro-3aH-bis([1,3]dioxolo)[4,5-b:4′,5′-d]pyran-3a-yl)methanol, the publication is Organic Letters (2021), 23(9), 3373-3378, database is CAplus and MEDLINE.

Sulfamates and sulfamides were most often synthesized from alcs. and amines with sulfamoyl chloride, which was an unstable reagent. Hexafluoroisopropyl sulfamate (HFIPS) as a bench-stable solid that reacts readily with a wide variety of alcs., amines, phenols, and anilines under mild reaction conditions was identified. The sole byproduct of the reaction was hexafluoroisopropanol (HFIP) and reaction products was often isolated in high purity after an aqueous workup (optional) and removal of solvents by evaporation

Organic Letters published new progress about 20880-92-6. 20880-92-6 belongs to alcohols-buliding-blocks, auxiliary class Other Aliphatic Heterocyclic,Chiral,Alcohol, name is ((3aS,5aR,8aR,8bS)-2,2,7,7-Tetramethyltetrahydro-3aH-bis([1,3]dioxolo)[4,5-b:4′,5′-d]pyran-3a-yl)methanol, and the molecular formula is C15H21BO2, Name: ((3aS,5aR,8aR,8bS)-2,2,7,7-Tetramethyltetrahydro-3aH-bis([1,3]dioxolo)[4,5-b:4′,5′-d]pyran-3a-yl)methanol.

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

Ganda, Sylvia published the artcileBiodegradable Glycopolymeric Micelles Obtained by RAFT-controlled Radical Ring-Opening Polymerization, COA of Formula: C12H20O6, the publication is Macromolecules (Washington, DC, United States) (2016), 49(11), 4136-4146, database is CAplus.

The design and synthesis of an entirely degradable glycopolymer micelle was presented. This design relies on the utilization of RAFT-controlled radical ring-opening polymerization (rROP) technique to afford multiple insertions of cleavable ester linkages onto the backbone of the corona. RAFT polymerization using a macroRAFT agent based on poly(ε-caprolactone) PCL was employed to control the polymerization of well-defined statistical glycopolymers of 1-O-acryloyl-2,3:4,5-di-O-isopropylidene-β-D-fructopyranose (1-O-AiPrFru) and 5,6-benzo-2-methylene-1,3-dioxepane (BMDO) monomer. Three block copolymers were synthesized to generate poly(ε-caprolactone)-b-poly[(1-O-acryloyl-2,3:4,5-di-O-isopropylidene-β-D-fructopyranose)-co-(5,6-benzo-2-methylene-1,3-dioxepane)] (PCL-b-P[(1-O-AiPrFru)-co-(BMDO)]) with varying block lengths. Self-assembly of the deprotected block copolymers generated nonspherical egg shaped micelles, where the shorter chains PCL₁₀₆-b-P[(1-O-AFru)₆₉-co-(BMDO)₉] underwent self-assembly forming micelles with the hydrodynamic diameter (D_H) of 106 nm. The biodegradation of these micelles were investigated via enzymic degradation by Lipase Pseudomonas sp., indicating entirely degradable architectures, which are no longer visible via dynamic light scattering (DLS). SEC further confirmed the appearance of fragmented glycopolymeric units. In vitro cell proliferation assay of the micelles and their degradation products revealed no toxicity against healthy human fibroblast HS27 and breast cancer MDA-MB-231 cell lines. The polymer concentration range tested was up to 0.20 mg·mL^-1 with the cell viabilities of ≥95%.

Macromolecules (Washington, DC, United States) published new progress about 20880-92-6. 20880-92-6 belongs to alcohols-buliding-blocks, auxiliary class Other Aliphatic Heterocyclic,Chiral,Alcohol, name is ((3aS,5aR,8aR,8bS)-2,2,7,7-Tetramethyltetrahydro-3aH-bis([1,3]dioxolo)[4,5-b:4′,5′-d]pyran-3a-yl)methanol, and the molecular formula is C12H20O6, COA of Formula: C12H20O6.

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