Esters-buliding-blocks

Wu, Bo published the artcileMutually-complementary structure design towards highly stretchable elastomers with robust strength and autonomous self-healing property, HPLC of Formula: 517-23-7, the publication is Polymer (2020), 122003, database is CAplus.

Achieving good transparency, high strength and superior extensibility simultaneously in autonomic self-healing elastomers remains challenging and fascinating. Herein, a complementary design strategy of combining densely distributed multiple hydrogen bonds and loosely packed spacer units in supramol. elastomer was reported to address the inherent contradiction of robust strength and room temperature self-healing. The chem. structure can be tuned to achieve a good compromise between the mech. properties and self-healing efficiency. The representative elastomers can achieve robust strength (6.81 MPa), high extensibility (2520%) and superior toughness with the dissipated energy up to 63.7 MJ/m³. Moreover, this elastomer is capable of recovering mech. fractures and routine scratches with the self-healing efficiency up to 90%, which are comparable to that of room-temperature self-healable counterparts. Spacer units with steric hindrance effect can facilitate segmental motions and dynamic changes of H-bonds. Meanwhile, the randomly distributed multiple H bonds crosslinking such spacers contribute to the good mech. performance and intriguing self-healing. In contrast to previous reports, this strategy provides an uncomplicated and cost-effective route to prepare robust elastomers that can self-heal at room temperature without any need of external assistance.

Polymer published new progress about 517-23-7. 517-23-7 belongs to esters-buliding-blocks, auxiliary class Tetrahydrofuran,Ketone,Ester, name is 3-Acetyldihydrofuran-2(3H)-one, and the molecular formula is C11H22N2O4, HPLC of Formula: 517-23-7.

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

Wang, Xuan published the artcileSelf-polishing antifouling coatings based on benzamide derivatives containing capsaicin, Name: Propyl 3,4,5-trihydroxybenzoate, the publication is Marine Pollution Bulletin (2022), 113844, database is CAplus and MEDLINE.

In this study, N-hydroxymethylbenzamide was alkylated with various aromatic compounds to obtain five novel benzamide derivatives containing capsaicin (BDCC), and the BDCC were incorporated into coatings as auxiliary agents. The relationships between properties and structures were discussed based on exptl. and theor. results. The theor. results showed the optimized configurations of BDCC and confirmed that the benzene ring, phenolic hydroxyl, ester and amide groups were active sites. Exptl. results indicated that the antimicrobial and antifouling effects of compounds b1, b2 and b3 were better than those of chlorothalonil, their MIC and MBC values were no more than 64 and 512 μg·mL^-1, and their test panels were covered only with small amounts of dirt and biofilms; they worked well as green antifouling additives. The exptl. and theor. results showed that BDCC and BDCC antifouling coatings were effective and eco-friendly.

Marine Pollution Bulletin published new progress about 121-79-9. 121-79-9 belongs to esters-buliding-blocks, auxiliary class Natural product, name is Propyl 3,4,5-trihydroxybenzoate, and the molecular formula is C6H8O3, Name: Propyl 3,4,5-trihydroxybenzoate.

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

Huang, Zhiyan published the artcileAn Enantioselective, Intermolecular α-Arylation of Ester Enolates To Form Tertiary Stereocenters, Application In Synthesis of 126613-06-7, the publication is Journal of the American Chemical Society (2011), 133(40), 15882-15885, database is CAplus and MEDLINE.

Some examples of enantioselective, intermol. α-arylation of ester enolates with aryl triflates to form tertiary stereocenters using a palladium catalyst supported by a new, (R)-H₈-BINOL-derived monophosphine is presented . The usefulness of the reaction was demonstrated in a gram-scale synthesis of (S)-Naproxen in 92% ee.

Journal of the American Chemical Society published new progress about 126613-06-7. 126613-06-7 belongs to esters-buliding-blocks, auxiliary class Chiral Diphenols, name is (R)-[1,1′-Binaphthalene]-2,2′-diyl bis(trifluoromethanesulfonate), and the molecular formula is C22H12F6O6S2, Application In Synthesis of 126613-06-7.

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

Yi, Zhuwu published the artcileBiaxially stretched polyamide 6/ethylene vinyl alcohol copolymer films with improved oxygen barrier and mechanical properties, Synthetic Route of 31570-04-4, the publication is Polymer Bulletin (Heidelberg, Germany), database is CAplus.

Polyamide 6 (PA6) and PA6/ethylene vinyl alc. copolymer (EVOH) films were prepared through extrusion casting process, followed by uniaxial and biaxial stretching on a laboratory biaxial stretcher. The crystallization properties, mech. properties, and barrier properties of PA6/EVOH films before/after stretching were investigated. It is found that the crystallinity of the stretched PA6/EVOH film is increased with the increase in EVOH content and stretching ratio. Notably, the oxygen barrier property of biaxially stretched PA6/EVOH films is 3 times higher than that of neat PA6 due to the strong interaction of two polymers and increased crystallinity. The modulus, tensile strength, and elongation at break of biaxially stretched PA6 films are also enhanced with the incorporation of EVOH. The crystal orientation of stretched PA6/EVOH films was investigated according to the wide-angle X-ray scattering anal. The degree of orientation is increased with the stretching ratio. With the increase in the orientation degree, the stretched films show increased tensile strength whereas decreased toughness. Furthermore, the biaxially stretched films present balanced mech. properties, and the stretching ratio of 3 x 3 shows excellent comprehensive mech. properties.

Polymer Bulletin (Heidelberg, Germany) published new progress about 31570-04-4. 31570-04-4 belongs to esters-buliding-blocks, auxiliary class Mono-phosphine Ligands, name is Tris(2,4-di-tert-butylphenyl) phosphite, and the molecular formula is C15H14O, Synthetic Route of 31570-04-4.

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

Su, Fang published the artcilePhotopolymerization and reaction sintering enabled generative shaping and material-forming of complex ceramic structures with high performance, Category: esters-buliding-blocks, the publication is Additive Manufacturing (2022), 102651, database is CAplus.

This study presents a novel combined generative shaping and material-forming (GSM) approach for preparing tritium breeder units for fusion reactors using 3D printing technol. For the first time, defect-free lithium-rich Li₄SiO₄ porous structures were successfully prepared by combining photopolymerization and reaction sintering processes based on the use of low-cost Li₂CO₃ and SiO₂ ceramic powders. Investigation was conducted on the preparation of the ceramic powder-based mixture slurry as well as the photopolymerization 3D printing and reaction sintering processes. Li₄SiO₄-based porous lattice ceramics with high purity, no obvious defects, and adjustable packing fraction were fabricated. The mech. properties of the samples prepared with different packing fractions were then evaluated. The prepared samples showed better mech. properties than the pebble bed structures with similar packing fractions. At a packing fraction of 92.10%, the crushing strength and elastic modulus reached 186.49 ± 0.04 MPa and 16.47 ± 0.03 GPa, resp. These results show that the combination of photopolymerization 3D printing and reaction sintering processes based on the use of low-cost ceramic powders has significant advantages in terms of flexibility and efficiency in structure design and fabrication and cost-effectiveness in material forming with enhanced performance, providing a promising route to produce high-performance tritium breeder structures for fusion technologies. In particular, the present combined method also paves a promising generalized way to enable effective generative structure-shaping and material-forming in the advanced ceramic manufacturing industry, not to mention that the preparation of high-performance Li₄SiO₄ tritium breeder units for fusion technologies.

Additive Manufacturing published new progress about 15625-89-5. 15625-89-5 belongs to esters-buliding-blocks, auxiliary class Polymerization Reagents,Crosslinkers, name is Trimethylolpropane triacrylate, and the molecular formula is C16H24BF4Ir, Category: esters-buliding-blocks.

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

Liu, Hong-Yan published the artcileThe chemical, sensory, and volatile characteristics of instant sweet tea (Lithocarpus litseifolius [Hance] Chun) using electronic nose and GC-MS-based metabolomics analysis, Application of Dimethyl adipate, the publication is LWT–Food Science and Technology (2022), 113518, database is CAplus.

This study aims to investigate the effect of instant tea processing on the chem., sensory, and volatile profiles of sweet tea. Young leaves of Lithocarpus litseifolius [Hance] Chun were extracted and dried with freeze-drying and spray-drying, resp. The contents of proteins, polysaccharides, total phenolics, total flavonoids, and free amino acids in instant teas were found to be higher than those in sweet tea. A total of 268 volatiles were identified by HS-SPME-GC-MS, and 88 compounds showed significant differences among different samples, and most of volatile compounds showed lower concentrations in instant tea powder than sweet tea powder. Nine aroma attributes were evaluated through descriptive sensory anal. Sweet tea had a higher intensity of woody, green, floral, fruity, and sweet descriptor, while the instant sweet teas demonstrated the higher intensity of caramel-like attribute. Our study emphasized the nutritive value of instant sweet tea, while the aroma needs to be improved further.

LWT–Food Science and Technology 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, Application of Dimethyl adipate.

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

Wang, Amu published the artcileRegioselective Synthesis of Pyrazolo[1,5-a]pyridine via TEMPO-Mediated [3 + 2] Annulation-Aromatization of N-Aminopyridines and α,β-Unsaturated Compounds, Recommanded Product: Methyl 3-phenyl-2-propenoate, the publication is Organic Letters (2022), 24(7), 1454-1459, database is CAplus and MEDLINE.

A TEMPO-mediated [3 + 2] annulation-aromatization protocol for the preparation of pyrazolo[1,5-a]pyridines from N-aminopyridines and α,β-unsaturated compounds were developed. The procedure offered multisubstituted pyrazolo[1,5-a]pyridines in good to excellent yield with high and predictable regioselectivity. The modification of marketed drugs including Loratadine, Abiraterone and Metochalcone, a one-pot three-step gram scale synthesis of key intermediate for the preparation of Selpercatinib were demonstrated. Mechanism studies showed that TEMPO served both as a Lewis acid and as an oxidant.

Organic Letters published new progress about 103-26-4. 103-26-4 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Benzene,Ester,Protease,Tyrosinase,Natural product, name is Methyl 3-phenyl-2-propenoate, and the molecular formula is C3H6O2, Recommanded Product: Methyl 3-phenyl-2-propenoate.

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

Zeng, Li-Yan published the artcileO-Methylation of carboxylic acids with streptozotocin, Quality Control of 103-26-4, the publication is Organic & Biomolecular Chemistry (2022), 20(26), 5230-5233, database is CAplus and MEDLINE.

The clin. used DNA-alkylating drug streptozotocin (STZ) was investigated using a simple work-up as an O-methylating agent to transform various carboxylic acids RC(O)OH (R = 2-phenylethenyl, 2-(4-chlorophenyl)ethenyl, 3-(1H-indol-3-yl)propyl, etc.), sulfonic acids R¹S(O)₂OH (R¹ = Ph, 4-methoxyphenyl, 4-chlorophenyl) and phosphorus acids (R²)₂P(O)OH (R² = Ph, OPh) into corresponding Me esters RC(O)OMe, R¹S(O)₂OMe, (R²)₂P(O)OMe and obtained with yields of up to 97% in 4 h at room temperature Good substrate tolerance was observed, and benefited from the mild conditions and compatibility of the reaction with water.

Organic & Biomolecular Chemistry published new progress about 103-26-4. 103-26-4 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Benzene,Ester,Protease,Tyrosinase,Natural product, name is Methyl 3-phenyl-2-propenoate, and the molecular formula is C8H6N2O3, Quality Control of 103-26-4.

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

Hu, Ying published the artcileCsp³-H monofluoroalkenylation via stereoselective C-F bond cleavage, Formula: C11H15NO2, the publication is Chemical Communications (Cambridge, United Kingdom) (2022), 58(16), 2734-2737, database is CAplus and MEDLINE.

A practical nickel- and photoredox-catalyzed Csp³-H monofluoroalkenylation through chelation-assisted Csp²-F bond cleavage of gem-difluoroalkenes for the synthesis of stereodefined tetrasubstituted fluoroalkenes were developed. Moreover, the gem-difluoroalkenes could also undergo photoredox-catalyzed cascade twofold C-F diaminomethylation.

Chemical Communications (Cambridge, United Kingdom) 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, Formula: C11H15NO2.

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

Zhou, Yi published the artcileDiscovery of Peptide Boronate Derivatives as Histone Deacetylase and Proteasome Dual Inhibitors for Overcoming Bortezomib Resistance of Multiple Myeloma, SDS of cas: 1877-71-0, the publication is Journal of Medicinal Chemistry (2020), 63(9), 4701-4715, database is CAplus and MEDLINE.

While proteasome inhibitors such as bortezomib showed satisfactory clin. benefits in the initial treatment of multiple myeloma (MM), drug resistance and relapse are unavoidable. Recent studies suggested inhibition of histone deacetylases (HDACs) restored sensitivity of bortezomib-resistant MM. Hence, we designed dual inhibitors targeting both HDACs and proteasomes to address the resistance of bortezomib. The most potent inhibitors, ZY-2 and ZY-13 showed excellent inhibition against proteasome and good selectivity against HDACs. In particular, ZY-2 not only exhibited good antiproliferative activities on the MM cell lines RPMI-8226, U266, and KM3 (IC₅₀ values of 6.66, 4.31, and 10.1 nM, resp.) but also showed more potent antiproliferative activities against the bortezomib-resistant MM cell line KM3/BTZ compared with bortezomib (IC₅₀ values of 8.98 vs. 226 nM, P < 0.01) and even better than the combination of the HDAC inhibitor MS-275 and bortezomib (1:1) (IC₅₀ values of 8.98 vs. 98.0 nM, P < 0.01).

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 C3H10ClNS, SDS of cas: 1877-71-0.

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