Tag: M.W=150-200

Chen, Hong published the artcileInterpenetrating polymer network hydrogels using natural based dyes initiating systems: Antibacterial activity and 3D/4D performance, Recommanded Product: Ethyl 4-dimethylaminobenzoate, the publication is European Polymer Journal (2022), 111042, database is CAplus.

In the past few decades, interpenetrating polymer network (IPN) hydrogels have attracted huge attention due to their special cell-like structures, interpenetrating interface, and two-phase continuity, which has special synergistic effects on their performance and function. In this work, the best candidates were selected from the firstly synthesized 11 dyes based on 1-aryl-3-(2,4,5-trimethoxyphenyl)prop-2-en-1-one or 3-aryl-1-(3,4,5-trimethoxyphenyl)prop, and then combined with an amine (i.e., 1,4-(dimethylamino) Et benzoate, EDB) and an iodonium salts (bis(4-tert-butylphenyl)iodonium hexafluorophosphate, Iod) as a three-component visible light photoinitiating systems (PIS) to induce both free-radical photopolymerization (FRP) of poly(ethylene glycol) diacrylate (PEG-DA) and cationic photopolymerization (CP) of 3,4-epoxycyclohexylmethyl-3′,4′-epoxycyclohexanecarboxylate (EPOX) and in situ reduction of silver cations into silver nanoparticles to prepare interpenetrating network polymers (IPN) with antibacterial activity for Gram-pos. bacteria (e.g. Staphylococcus aureus) and Gram-neg. bacteria (e.g. Pseudomonas aeruginosa). More interestingly, stable 3D patterns were successfully produced through direct laser write (DLW) technique, and they exhibited reversible swelling properties and shape memory effects caused by swelling and dehydration processes, thus enabling 4D printing.

European Polymer Journal published new progress about 10287-53-3. 10287-53-3 belongs to esters-buliding-blocks, auxiliary class Amine,Benzene,Ester, name is Ethyl 4-dimethylaminobenzoate, and the molecular formula is C11H15NO2, Recommanded Product: Ethyl 4-dimethylaminobenzoate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Hu, Lijun published the artcileDesign, synthesis, and biological studies of novel 3-benzamidobenzoic acid derivatives as farnesoid X receptor partial agonist, HPLC of Formula: 1877-71-0, the publication is European Journal of Medicinal Chemistry (2021), 113106, database is CAplus and MEDLINE.

Farnesoid X receptor (FXR), a bile acid-activated nuclear receptor, regulates the metabolism of bile acid and lipids as well as maintains the stability of internal environment. FXR was considered as a therapeutic target of liver disorders, such as drug-induced liver injury, fatty liver and cholestasis. The previous reported FXR partial agonist I was a suitable lead compound in terms of its high potent and low mol. size, while the docking study of compound I suggested a large unoccupied hydrophobic pocket, which might be provided more possibility of structure-activity relationship (SAR) study. In this study, we have performed comprehensive SAR and mol. modeling studies based on lead compound I. All of these efforts resulted in the identification of a novel series of FXR partial agonists. In this series, compound II revealed the best activity and strong interaction with binding pocket of FXR. Moreover, compound II protected mice against acetaminophen-induced hepatotoxicity by the regulation of FXR-related gene expression and improving antioxidant capacity. In summary, these results suggest that compound II is a promising FXR partial agonist suitable for further investigation.

European Journal of Medicinal Chemistry published new progress about 1877-71-0. 1877-71-0 belongs to esters-buliding-blocks, auxiliary class Carboxylic acid,Benzene,Ester, name is 3-(Methoxycarbonyl)benzoic acid, and the molecular formula is C9H8O4, HPLC of Formula: 1877-71-0.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Ronson, Thomas O. published the artcileRuthenium-Catalyzed Reductive Arylation of N-(2-Pyridinyl)amides with Isopropanol and Arylboronate Esters, Synthetic Route of 1877-71-0, the publication is Angewandte Chemie, International Edition (2019), 58(2), 482-487, database is CAplus and MEDLINE.

A new three-component reductive arylation of amides with stable reactants (iPrOH and arylboronate esters), making use of a 2-pyridinyl (Py) directing group, is described. The N-Py-amide substrates are readily prepared from carboxylic acids and PyNH₂, and the resulting N-Py-1-arylalkanamine reaction products are easily transformed into the corresponding chlorides by substitution of the HN-Py group with HCl. The 1-aryl-1-chloroalkane products allow substitution and cross-coupling reactions. Therefore, a general protocol for the transformation of carboxylic acids into a variety of functionalities is obtained. The Py-NH₂ byproduct can be recycled.

Angewandte Chemie, International Edition published new progress about 1877-71-0. 1877-71-0 belongs to esters-buliding-blocks, auxiliary class Carboxylic acid,Benzene,Ester, name is 3-(Methoxycarbonyl)benzoic acid, and the molecular formula is C9H8O4, Synthetic Route of 1877-71-0.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Blanchard, Lucien published the artcileMelt polycondensation for the synthesis of polyester amides using kneader reactor technology, Name: Dimethyl adipate, the publication is Chimia (2020), 74(12), 1024-1025, database is CAplus and MEDLINE.

In this work, we discuss the process development and scale-up of the melt polycondensation of polyester amides from a laboratory scale to kg-scale in a kneader reactor. We identified and optimized the most important critical parameters and produced kg-quantities of polyester amides with Mn up to 25’000 g/mol and reproducible thermal and mech. properties. The special kneader reactor allows safe and efficient scale-up of polymerization reactions at high temperature and viscous melts due to good mixing and efficient mass transfer.

Chimia published new progress about 627-93-0. 627-93-0 belongs to esters-buliding-blocks, auxiliary class Ploymers, name is Dimethyl adipate, and the molecular formula is C8H14O4, Name: Dimethyl adipate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Grozdanic, Nikola published the artcileVolumetric properties of binary mixtures of tetrahydrofuran, dimethyl adipate, 1-butanol and 2-butanol from (288.15 to 323.15) K and modeling by Prigogine-Flory-Patterson (PFP) and Extended Real Association Solution (ERAS) models, Safety of Dimethyl adipate, the publication is Journal of Molecular Liquids (2021), 117313, database is CAplus.

In this work, exptl. densities data of the binary system THF + 2-butanol have been determined at eight temperatures, T=(288.15-323.15) K and atm. pressure and used for excess molar volume calculations Also, partial molar volumes, excess partial molar volumes and partial molar volumes at infinite dilutions were calculated for further non-ideal behavior of binary mixture Excess molar volume, VE, of exptl. determined system THF + 2-butanol, and four previously published binary systems, THF + 1-butanol, di-Me adipate + 1-butanol, di-Me adipate + 2-butanol and di-Me adipate + THF were correlated with two models, Prigogine-Flory-Patterson (PFP) and Extended Real Association Solution (ERAS). In order to apply the proposed models addnl. data of ultrasonic speed of sounds for pure components, di-Me adipate, THF, 1-butanol and 2-butanol, were measured in the temperature range T=(288.15-323.15) K and at atm. pressure. Volumetric coefficients, thermal expansion coefficient α and isothermal compressibility κ were calculated from d., ultrasonic speed of sound and isobaric heat capacity data. Isobaric molar heat capacities Cp,m at all temperatures for all pure components were obtained by correlation of literature data. Both models, PFP and ERAS were used for anal. of mol. interactions present in the investigated solutions

Journal of Molecular Liquids published new progress about 627-93-0. 627-93-0 belongs to esters-buliding-blocks, auxiliary class Ploymers, name is Dimethyl adipate, and the molecular formula is C8H14O4, Safety of Dimethyl adipate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Steenhuisen, S.-L. published the artcileFloral scent in bird- and beetle-pollinated Protea species (Proteaceae): Chemistry, emission rates and function, Computed Properties of 5205-11-8, the publication is Phytochemistry (Elsevier) (2012), 78-87, database is CAplus and MEDLINE.

Evolutionary shifts between pollination systems are often accompanied by modifications of floral traits, including olfactory cues. The authors investigated the implications of a shift from passerine bird to beetle pollination in Protea for floral scent chem., and also explored the functional significance of Protea scent for pollinator attraction. Using headspace sampling and gas chromatog.-mass spectrometry, they found distinct differences in the emission rates and chem. composition of floral scents between eight bird- and four beetle-pollinated species. The amount of scent emitted from inflorescences of beetle-pollinated species was, on average, about 10-fold greater than that of bird-pollinated species. Floral scent of bird-pollinated species consists mainly of small amounts of green-leaf volatiles and benzenoid compounds, including benzaldehyde, anisole and benzyl alc. The floral scent of beetle-pollinated species is dominated by emissions of linalool, a wide variety of other monoterpenes and the benzenoid Me benzoate, which imparts a fruity odor to the human nose. The number of compounds recorded in the scent of beetle-pollinated species was, on average, greater than in bird-pollinated species (45 vs. 29 compounds, resp.). Choice experiments using a Y-maze showed that a primary pollinator of Protea species, the cetoniine beetle Atrichelaphinis tigrina, strongly preferred the scent of inflorescences of the beetle-pollinated Protea simplex over those of the bird-pollinated sympatric congener, Protea roupelliae. This study shows that a shift from passerine bird to insect pollination can be associated with marked up-regulation and compositional changes in floral scent emissions.

Phytochemistry (Elsevier) published new progress about 5205-11-8. 5205-11-8 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Benzene,Ester, name is 3-Methylbut-2-en-1-yl benzoate, and the molecular formula is C23H43NP2, Computed Properties of 5205-11-8.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Claude-Lafontaine, Angelina published the artcileVolatile constituents of the flower concrete of Gardenia taitensis DC, SDS of cas: 5205-11-8, the publication is Journal of Essential Oil Research (1992), 4(4), 335-43, database is CAplus.

After fractionation by normal distillation under reduced pressure followed by silica gel chromatog., the volatile fractions of the hexane concrete of G. taitensis DC were investigated using GC/MS and GC/FTIR, and more than 150 components were identified. The major oxygenated constituents were linalool (4.4%), Me salicylate (2.5%), (Z)-3-hexenyl benzoate (2.2%), dihydroconiferyl alc. (1.1%), (Z)-3-hexenyl salicylate (0.7%), benzyl benzoate (6.2%), dihydroconiferyl acetate (12.2%), 2-phenylethyl benzoate (6.2%), benzyl salicylate (2.5%), geranyl benzoate (2.1%) and 2-phenylethyl salicylate (2.2%). The identification of numerous dihydroconiferyl esters appears to be unique to this species.

Journal of Essential Oil Research published new progress about 5205-11-8. 5205-11-8 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Benzene,Ester, name is 3-Methylbut-2-en-1-yl benzoate, and the molecular formula is C12H14O2, SDS of cas: 5205-11-8.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Tunc, Nihat published the artcileNanoceria-Supported Ru-Based Nanoparticles as Highly Efficient Catalysts for Hydrolysis of Ethane 1,2-Diamine Borane, Formula: C11H15NO2, the publication is ChemistrySelect (2022), 7(13), e202200399, database is CAplus.

Here, the first ever preparation of some series of nanoceria-supported Ru-based nanoparticles with different compositions (Ru_xM_100-x@NC, M: Co, Ni, Pd) and their use as highly active catalysts to liberate hydrogen gas from hydrolysis of ethane 1,2-diamine borane (EDAB) is reported. For the preparation of totally fifteen Ru_xM_100-x@NC nanoparticles with different compositions, the related metal cations are first supported on nanoceria surfaces by wet impregnation method in aqueous solution Then, Ru³⁺-M²⁺-exchanged nanoceria samples are synchronously reduced during hydrolysis reaction of EDAB to form corresponding Ru_xM_100x@NC nanoparticles meanwhile the formed nanoparticles catalyze the same reaction. RuxM100x@NC nanoparticles are identified by inductively coupled plasma-optical emission spectroscopy (ICP-OES), powder X-ray diffraction (PXRD), transmission electron microscopy (TEM), XPS, and BET surface area techniques. They provide quiet high catalytic activities in the hydrolysis reaction of EDAB. Among them, Ru₂₀Pd₈₀@NC nanoparticles are by far the best one up to date with a TOF value of 608.49 min^-1 at 25°C.

ChemistrySelect published new progress about 10287-53-3. 10287-53-3 belongs to esters-buliding-blocks, auxiliary class Amine,Benzene,Ester, name is Ethyl 4-dimethylaminobenzoate, and the molecular formula is C13H18BClO2, Formula: C11H15NO2.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Cobo-Golpe, M. published the artcilePortable dehumidifiers condensed water: A novel matrix for the screening of semi-volatile compounds in indoor air, Name: Dimethyl adipate, the publication is Chemosphere (2020), 126346, database is CAplus and MEDLINE.

The comprehensive identification of organic species existing in indoor environments is a key issue to understand their impact in human health. This study proposes the anal. of condensed water samples, collected with portable dehumidifiers, to characterize semi-volatile compounds in the gas phase of confined areas. Water samples are concentrated by solid-phase extraction (SPE). The obtained extracts are analyzed by gas chromatog. (GC) time-of-flight mass spectrometry (TOF-MS), following a non-target screening data mining approach. In first term, spectra of deconvoluted compounds are compared with those in NIST low resolution library; thereafter, tentative identifications are verified using an inhouse database of accurate electron ionization (EI) MS spectra. Chromatog. (retention index) and spectral data are combined for unambiguous species identification. The potential of condensed water samples to reflect changes in the composition of indoor atmospheres, the match between data obtained using different dehumidifiers, and the relative concentration efficiency of condensed water compared to that attained by active sampling of moderate air volumes are discussed. A total of 141 semi-volatile compounds were identified (98 confirmed against authentic standards) in a set of 21 samples obtained from different homes and working places. This list contains more than 40 fragrances (including several potential allergens), solvents and intermediates in the production of polymeric materials, plasticizers and flame retardants.

Chemosphere published new progress about 627-93-0. 627-93-0 belongs to esters-buliding-blocks, auxiliary class Ploymers, name is Dimethyl adipate, and the molecular formula is C8H14O4, Name: Dimethyl adipate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Xiong, Haigen published the artcileIron-catalyzed carboazidation of alkenes and alkynes, Quality Control of 617-52-7, the publication is Nature Communications (2019), 10(1), 1-7, database is CAplus.

An iron-catalyzed rapid carboazidation of alkenes e.g., 1-tert-butyl-4-ethenylbenzene and alkynes RCCH (R = Ph, 3-chlorophenyl, n-C₆H₁₃, etc.), enabled by the oxidative radical relay precursor t-Bu perbenzoate were described. This strategy enjoys success with a broad scope of alkenes under mild conditions, and it can also work with aryl alkynes which are challenging substrates for carboazidation. A large number of diverse structures, including many kinds of amino acid precursors, fluoroalkylated vinyl azides e.g., 1-(1-azido-3,4,4,4-tetrafluoro-3-trifluoromethyl-butyl)-4-tert-butyl-benzene, other specific organoazides R¹CH₂CH(N₃)CH₂(CF₂)₃CF₃ (R¹ = 5-bromopentyl, 8-(benzyloxy)octyl, 8-hydroxyoctyl, etc.), and 2H-azirines I (R² = n-C₄F₉, C₂F₅, c-C₆F₁₁, etc.) can be easily produced.

Nature Communications published new progress about 617-52-7. 617-52-7 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Aliphatic hydrocarbon chain,Ester, name is Dimethyl itaconate, and the molecular formula is C3H7NO2, Quality Control of 617-52-7.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics