Tag: M.W=250-300

Chen, Junming published the artcileSynergistic effect of polyphosphazene nanotubes and graphene on enhancing ablative resistance of ethylene propylene diene monomer insulation composites, Recommanded Product: 4,4′-Sulfonyldiphenol, the publication is Journal of Applied Polymer Science (2022), 139(36), e52834, database is CAplus.

Many advanced fillers were used in ethylene propylene diene monomer (EPDM) insulation composites to enhance the ablative resistance by strengthening char layer. However, the structures of fillers and char layer were usually neglected. In this work, a new type of cross-linked network-like polyphosphazene nanotubes (PNTs) was added in EPDM composites in combination with graphene. The results showed that the ablation performance of EPDM composites was improved by 21.6% with the synergistic effect of PNTs and graphene. Moreover, the ablation mechanism was studied by analyzing ablated char layer using X-ray diffraction (XRD), SEM, energy disperse spectroscopy (EDS) and Raman spectroscopy. PNTs served as skeleton to build the cross-linked network char layer and graphene played a role in enhancing the properties of char layer. The findings of this work emphasize the synergistic effect of structures and properties of fillers when performing ablative modification, which provides a new idea to enhance the ablation properties of EPDM composites.

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, Recommanded Product: 4,4′-Sulfonyldiphenol.

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

Schoch, Silvia published the artcileTethering Carbohydrates to the Vinyliminium Ligand of Antiproliferative Organometallic Diiron Complexes, Computed Properties of 20880-92-6, the publication is Organometallics (2022), 41(5), 514-526, database is CAplus and MEDLINE.

Four propargyl O-glycosides derivatized with mannose, glucose, and fructose moieties were synthesized and then incorporated within a diiron structure as part of a vinyliminium ligand. Hence, six glycoconjugated diiron complexes, [2–5]CF₃SO₃ (see Scheme 1) and the nonglycosylated analogs [6a–b]CF₃SO₃, were obtained in high yields and unambiguously characterized by elemental anal., mass spectrometry, and IR and multinuclear NMR spectroscopies. All compounds exhibited a significant stability in DMSO-d₆/D₂O solution, with 63-89% of the complexes unaltered after 72 h at 37° and also in the cell culture medium. The cytotoxicity of [2–6]CF₃SO₃, as well as that of previously reported 7 and 8, was assessed on CT26 (mouse colon carcinoma), U87 (human glioblastoma), MCF-7 (human breast adenocarcinoma), and RPE-1 (human normal retina pigmented epithelium) cell lines. In general, the IC₅₀ values correlate with the hydrophobicity of the compounds (measured as octanol-H₂O partition coefficients) and do not show an appreciable level of selectivity against cancer cells with respect to the nontumor ones.

Organometallics 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, Computed Properties of 20880-92-6.

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

Zhou, Chen published the artcileA Sc(OTf)₃ catalyzed dehydrogenative reaction of electron-rich (hetero)aryl nucleophiles with 9-aryl-fluoren-9-ols, Safety of 9-Phenyl-9H-xanthen-9-ol, the publication is Organic & Biomolecular Chemistry (2019), 17(44), 9615-9619, database is CAplus and MEDLINE.

A highly efficient dehydrogenative reaction of a series of (hetero)aryl nucleophiles with 9-aryl-fluoren-9-ols was realized by using only 2 mol% of Sc(OTf)₃ as a catalyst. The corresponding 9,9-diarylfluorenes I [R¹ = Me, Ph, 4-ClC₆H₄, etc.; R² = H, Br; R³ = 1H-indol-3-yl, benzofuran-2-yl, 2-methyl-1H-indol-3-yl, etc.] were obtained in up to 99% yield. The protocol exhibited high selectivity, mild reaction conditions and good substrate compatibility. This protocol was further highlighted by its applications in the construction of potential electroluminescent materials.

Organic & Biomolecular 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 C10H14O, Safety of 9-Phenyl-9H-xanthen-9-ol.

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

Han, Yu published the artcileNon-target, suspect and target screening of chemicals of emerging concern in landfill leachates and groundwater in Guangzhou, South China, Product Details of C12H10O4S, the publication is Science of the Total Environment (2022), 155705, database is CAplus and MEDLINE.

Landfill sites have been regarded as a significant source of chems. of emerging concern (CECs) in groundwater. However, our understanding about the compositions of CECs in landfill leachate and adjacent groundwater is still very limited. Here we investigated the CECs in landfill leachates and groundwater of Guangzhou in South China by target, suspect and non-target anal. using high-resolution mass spectrometry (HRMS). A variety of CECs (n = 242), including pharmaceuticals (n = 64), pharmaceutical intermediates (n = 18), personal care products (n = 9), food additives (n = 18), industrial chems. (n = 82, e.g., flame retardants, plasticizers, antioxidants and catalysts), pesticides (n = 26), transformation products (n = 8) and other organic compounds (n = 17) were (tentatively) identified by non-target and suspect screening. 142 CECs were quantitated with target anal., and among them 37, 24 and 27 CECs were detected resp. in the raw leachate (272-1780μg/L), treated leachate (0.25-0.81μg/L) and groundwater (0.10-53.7μg/L). The CECs in the raw leachates were efficiently removed with the removal efficiencies greater than 88.7%. Acesulfame, bisphenol F and ketoprofen were the most abundant compounds in both treated leachate and groundwater. The CECs in groundwater was found most likely to be originated from the landfill sites. Our results highlight the importance of non-target screening in identifying CECs, and reveal the contamination risk of groundwater by landfill leachate.

Science of the Total Environment 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, Product Details of C12H10O4S.

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

Wang, Yafeng published the artcileEnantioselective β-hydroxy thioesters formation via decarboxylative aldol reactions of malonic acid half thioesters with aldehydes promoted by chloramphenicol derived sulfonamides¹, Computed Properties of 156453-53-1, the publication is Tetrahedron (2017), 73(34), 5055-5062, database is CAplus.

A highly enantioselective synthesis of chiral β-hydroxy thioesters that uses a decarboxylative aldol reaction of malonic acid half thioesters and aldehydes catalyzed by a chloramphenicol base-derived bifunctional organocatalyst is reported. The resulting chiral β-hydroxy thioesters were obtained in high yields (up to 82%) with good to excellent enantioselectivities (up to 94% ee). The synthetic application of the methodol. is illustrated by the asym. synthesis of the selective serotonin reuptake inhibitor dapoxetine.

Tetrahedron published new progress about 156453-53-1. 156453-53-1 belongs to alcohols-buliding-blocks, auxiliary class Chiral,Benzene,Naphthalene,Alcohol,Ether, name is (R)-3-(Naphthalen-1-yloxy)-1-phenylpropan-1-ol, and the molecular formula is C15H20O6, Computed Properties of 156453-53-1.

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

Yoshida, Tatsuki published the artcileTransition-Metal-Free O-Arylation of Alcohols and Phenols with S-Arylphenothiaziniums, Recommanded Product: ((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 Journal of Organic Chemistry (2022), 87(11), 7565-7573, database is CAplus and MEDLINE.

Herein, authors report the transition-metal-free O-arylation of alcs. and phenols with S-arylphenothiaziniums, which can be easily synthesized from boronic acids. Aryl substituents derived from arylboronic acids were selectively introduced into the hydroxy groups in alcs. and phenols, and a variety of aryl ethers were synthesized. This selectivity is supported by theor. calculations

Journal of Organic Chemistry 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 C8H5F3O3, Recommanded Product: ((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

Liang, Ming published the artcileBanana-peel-derived magnetic porous carbon as effective adsorbent for the enrichment of six bisphenols from beverage and water samples, Recommanded Product: 4,4′-Sulfonyldiphenol, the publication is Food Chemistry (2022), 131948, database is CAplus and MEDLINE.

Functionalized magnetic nanoporous carbon derived from banana peel was synthesized through carbonization, porogenesis, carboxylation and magnetization using banana peel and was successfully used as a magnetic solid phase extraction (MSPE) material for the enrichment of six bisphenols (BPs) from beverage and water samples. After the optimization of MSPE process, the enrichment factors of six target analytes were in the range of 74-112 for water samples, and 15-22 for beverage samples. Then, high-performance liquid chromatog.-quadrupole-Orbitrap high-resolution mass spectrometry (HPLC-Q Orbitrap-HRMS) was used for the separation and determination of the target analytes. Results showed that the extraction recoveries for 6 BPs were in the range of 71.9-108.4% with an RSD of 2.5-7.5% (n = 6). These results demonstrated that the as-prepared material could efficiently enrich some aromatic compounds and the proposed method is reliable and robust for the determination of BPs in water and beverage samples.

Food Chemistry 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, Recommanded Product: 4,4′-Sulfonyldiphenol.

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

Andersen, Sofie Meng published the artcile3-(Dimethylamino)-1-propylamine: A Cheap and Versatile Reagent for Removal of Byproducts in Carbohydrate Chemistry, Computed Properties of 20880-92-6, the publication is Organic Letters (2015), 17(4), 944-947, database is CAplus and MEDLINE.

Inexpensive 3-(dimethylamino)-1-propylamine (DMAPA) was found to be effective in anomeric deacylation reactions giving 1-O deprotected sugars in high yield as precursors for the formation of imidate glycosyl donors. DMAPA was also found to be useful for removing excess reagents such as benzoyl chloride, tosyl chloride, and 2,2,2-trifluoro-N-phenylacetimidoyl chloride. The deacylation reaction could be conducted in moist THF and did not require chromatog. purification since an acidic wash was sufficient to remove excess reagent and the formed byproduct.

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 C12H20O6, Computed Properties of 20880-92-6.

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

Xie, Zhi-Hui published the artcileEffects of molecular structure on organic contaminants′ degradation efficiency and dominant ROS in the advanced oxidation process with multiple ROS, Computed Properties of 80-09-1, the publication is Environmental Science & Technology (2022), 56(12), 8784-8795, database is CAplus and MEDLINE.

In this study, the previously overlooked effects of contaminants′ mol. structure on their degradation efficiencies and dominant reactive oxygen species (ROS) in advanced oxidation processes (AOPs) are investigated with a peroxymonosulfate (PMS) activation system selected as the typical AOP system. Averagely, degradation efficiencies of 19 contaminants are discrepant in the CoCaAl-LDO/PMS system with production of SO₄^•-, ^•OH, and ¹O₂. D. functional theory calculations indicated that compounds with high E_HOMO, low-energy gap (ΔE = E_LUMO – E_HOMO), and low vertical ionization potential are more vulnerable to be attacked. Further anal. disclosed that the dominant ROS was the same one when treating similar types of contaminants, namely SO₄^•-, ¹O₂, ¹O₂, and ^•OH for the degradation of CBZ-like compounds, SAs, bisphenol, and triazine compounds, resp. This phenomenon may be caused by the contaminants′ structures especially the commonly shared or basic parent structures which can affect their effective reaction time and second-order rate constants with ROS, thus influencing the contribution of each ROS during its degradation Overall, the new insights gained in this study provide a basis for designing more effective AOPs to improve their practical application in wastewater treatment.

Environmental Science & Technology 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 C11H19N, Computed Properties of 80-09-1.

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

Zhang, Zhenzhen published the artcileSilver-Mediated N-Trifluoromethylation of Amides and Peptides, Recommanded Product: ((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 Chinese Journal of Chemistry (2020), 38(9), 924-928, database is CAplus.

The direct N-trifluoromethylation of N-H amides was reported. Promoted by AgOTf and 2-fluoropyridine, the reaction of a variety of amides with Selectfluor, TMSCF₃ and CsF proceeded smoothly at room temperature leading to the corresponding N-trifluoromethylated products in satisfactory yields. The protocol was also applicable to amino acid derivatives, resulting in efficient and chemoselective N-trifluoromethylation of di- and tri-peptides with retention of configuration. A mechanism involving reductive elimination of Ag(III) intermediates to form N-CF₃ bonds was proposed.

Chinese Journal of Chemistry 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 C28H41N7O4, Recommanded Product: ((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