Esters-buliding-blocks

Blanco-Zubiaguirre, L. published the artcileMigration of photoinitiators, phthalates and plasticizers from paper and cardboard materials into different simulants and foodstuffs, Name: Ethyl 4-dimethylaminobenzoate, the publication is Food Chemistry (2021), 128597, database is CAplus and MEDLINE.

The migration of photoinitiators, phthalates and plasticizers from two paper and cardboard materials into food simulants (50% and 95% EtOH and Tenax) and foodstuffs (rice, cereals and milk powder) was studied. In the case of liquid simulants migration was observed to reach the equilibrium after 60 min and depended on the material type and the physicochem. parameters of the migrants, whereas the temperature (room temperature and 60°C) did not show significant effects. The study of migration of the compounds from a baking paper to Tenax at high temperatures (150 and 250°C) evidenced an increment of migration when increasing temperature, except for the most volatile analytes. Finally, the migration to foodstuffs was studied using fully validated anal. protocols. Overall, the comparison of the migration rates demonstrated that Tenax was adequate for the simulation of the migration to rice and cereals, but underestimated the migration to infant milk powder, for which 95% EtOH resulted a more suitable simulant.

Food Chemistry 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, Name: Ethyl 4-dimethylaminobenzoate.

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

Wang, Zhanguo published the artcileParallel solution-phase synthesis of 4H-benzo[1,4]thiazin-3-one and 1,1-dioxo-1,4-dihydro-2H-1λ⁶-benzo[1,4]thiazin-3-one derivatives from 1,5-difluoro-2,4-dinitrobenzene, SDS of cas: 19788-49-9, the publication is Journal of Combinatorial Chemistry (2007), 9(4), 652-660, database is CAplus and MEDLINE.

This paper discusses the synthesis of privileged structures 4H-benzo[1,4]thiazin-3-one and 1,1-dioxo-1,4-dihydro-2H-1λ⁶-benzo[1,4]thiazin-3-one derivatives in a parallel solution-phase manner using 1,5-difluoro-2,4-dinitrobenzene. Each scaffold possesses four diversity points. A cheap and efficient oxidant, urea-hydrogen peroxide (UHP), was applied for the introduction of the sulfone group. The intramol. cyclization to 1,1-dioxo-1,4-dihydro-2H-1λ⁶-benzo[1,4]thiazin-3-one was achieved by microwave assistance or the use of an inorganic base.

Journal of Combinatorial Chemistry published new progress about 19788-49-9. 19788-49-9 belongs to esters-buliding-blocks, auxiliary class Thiol,Aliphatic hydrocarbon chain,Ester, name is Ethyl 2-mercaptopropanoate, and the molecular formula is C6H4ClNO2, SDS of cas: 19788-49-9.

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

Guo, Shengrong published the artcileHighly efficient catalyst-free one-pot synthesis of dithiocarbamates under solvent-free conditions, SDS of cas: 3052-61-7, the publication is Youji Huaxue (2012), 32(5), 907-914, database is CAplus.

A highly efficient and simple synthesis of dithiocarbamates is reported in the one-pot reaction of amines, CS₂, and alkyl halides without using a catalyst under solvent-free conditions. The mild reaction conditions, high yields, and broad scope of the reaction illustrate the good synthetic utility of this method. The reaction is a highly atom-economic process for production of dithiocarbamates and can be successfully used in large amount for the pharmaceutical or agrochem. industries.

Youji Huaxue published new progress about 3052-61-7. 3052-61-7 belongs to esters-buliding-blocks, auxiliary class Amine,Benzene,Amide, name is Benzyl diethylcarbamodithioate, and the molecular formula is C12H17NS2, SDS of cas: 3052-61-7.

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

Zhang, Muliang published the artcileDeoxygenative Deuteration of Carboxylic Acids with D₂O, Product Details of C9H8O4, the publication is Angewandte Chemie, International Edition (2019), 58(1), 312-316, database is CAplus and MEDLINE.

C1-Deuterated aryl and alkyl aldehydes such as 4-PhC₆H₄CDO and PhCH₂CH₂CDO were prepared chemoselectively with 58-96% deuterium incorporation by reduction of aromatic and aliphatic carboxylic acids using iridium photocatalysts, either Ph₃P or Ph₂OEt as an oxygen acceptor, 2,4,6-i-Pr₃C₆H₂SH as a hydrogen atom donor, and using D₂O as an inexpensive deuterium source. The method was used for the preparation of deuterated derivatives of pharmaceuticals and natural products containing aromatic carboxylic acid moieties. The method was also used for chemoselective reduction of aryl and alkyl carboxylic acids to the corresponding aldehydes using H₂O as a hydrogen atom source.

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 C11H21BF4N2O2, Product Details of C9H8O4.

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

Dong, Jie published the artcileManganese-catalysed divergent silylation of alkenes, Category: esters-buliding-blocks, the publication is Nature Chemistry (2021), 13(2), 182-190, database is CAplus and MEDLINE.

Transition-metal-catalyzed, redox-neutral dehydrosilylation of alkenes is a long-standing challenge in organic synthesis, with current methods suffering from low selectivity and narrow scope. The authors report a general and simple method for the Mn-catalyzed dehydrosilylation and hydrosilylation of alkenes, with Mn₂(CO)₁₀ as a catalyst precursor, by using a ligand-tuned metalloradical reactivity strategy. This enables versatility and controllable selectivity with a 1:1 ratio of alkenes and silanes, and the synthetic robustness and practicality of this method are demonstrated using complex alkenes and light olefins. The selectivity of the reaction was studied using d. functional theory calculations, showing the use of an ⁱPrPNP ligand to favor dehydrosilylation, while a JackiePhos ligand favors hydrosilylation. The reaction is redox-neutral and atom-economical, exhibits a broad substrate scope and excellent functional group tolerance, and is suitable for various synthetic applications on a gram scale. [graphic not available: see fulltext].

Nature Chemistry 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 C42H63O3P, Category: esters-buliding-blocks.

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

Guo, Guangzhong published the artcileStudy on the resolution of geometric isomers of insect sex pheromones with capillary column GC, Formula: C14H26O2, the publication is Youji Huaxue (1984), 349-54, database is CAplus.

Geometric isomers of cis– and trans-dodecen-1-ol and their acetates were resolved by capillary gas chromatog. Seven different stationary phases were compared: XE-60, DEGS, PEG, FFAP, QF-1, OV-17, and OV-351. Retention times and Kovats indexes are shown.

Youji Huaxue published new progress about 16974-11-1. 16974-11-1 belongs to esters-buliding-blocks, auxiliary class Aliphatic Chain, name is (Z)-Dodec-9-en-1-yl acetate, and the molecular formula is C14H26O2, Formula: C14H26O2.

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

Gao, He published the artcileUltraviolet light-responsive polyacrylate film with high fatigue resistance, Computed Properties of 31570-04-4, the publication is Journal of Polymer Research (2022), 29(2), 46, database is CAplus.

Photochromic materials with stable properties during long-term use have a very broad application prospect. Herein, five kinds of spirooxazines (SO1-SO5) with antioxidant properties were successfully synthesized by blending and covalently bonding antioxidants. Then various photochromic polyacrylate laminating adhesives (PA1-PA7) with good fatigue resistance were prepared by incorporating spirooxazines into polyacrylate. Among them, this study used 2, 6 -di-tert-butyl-4-methylphenol (BHT) as the main antioxidant, and tris (2, 4-di-tert-butylphenyl) phosphite (168) as the auxiliary antioxidant. Upon UV activation, these PA films possessed superior photochromism and light responsiveness. Importantly, unlike traditional phys. blending photochromic polymers, SO₂ was successfully covalently bonded into PA through reaction (PA6), effectively improving the fatigue resistance and thermal stability of the PA film. Doping with BHT, it further improved the photochromic properties of the compound film (PA7).

Journal of Polymer Research 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 C42H63O3P, Computed Properties of 31570-04-4.

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

Yao, Xiang published the artcilePreparation of cinnamon hydroxamic acid and its flotation characteristics and mechanism to fine-grained wolframite, Name: Methyl 3-phenyl-2-propenoate, the publication is Journal of Molecular Liquids (2022), 119721, database is CAplus.

A new collector-cinnamon hydroxamic acid (CIHA)-was synthesized from Me cinnamate using the hydroxyamine method. The results of single-mineral flotation and artificially mixed-mineral flotation indicated that CIHA had good collection performance and selectivity. Adsorption-capacity test results indicated that the CIHA collector adsorbed wolframite and quartz, and the adsorption intensity of wolframite was higher than that of quartz. The adsorption mechanism was investigated via zeta-potential anal., Fourier transform IR spectroscopy, and XPS. The results indicated that CIHA interacted with Mn on the wolframite surface via Pb²⁺ activation to form a surface Mn-O-Pb²⁺ complex, which formed a new Fe-O bond with Fe. Hydroxamic acid may have formed a five-element chelated hydroxamic group with the metal on the wolframite surface. The hydrophobicity of the wolframite surface was improved, making the wolframite more easily attach to bubbles and be more easily carried to the pulp surface.

Journal of Molecular Liquids 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 C5H8N2O, Name: Methyl 3-phenyl-2-propenoate.

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

Qin, Zezhao published the artcileInjectable and Cytocompatible Dual Cross-Linking Hydrogels with Enhanced Mechanical Strength and Stability, SDS of cas: 517-23-7, the publication is ACS Biomaterials Science & Engineering (2020), 6(6), 3529-3538, database is CAplus and MEDLINE.

Injectable hydrogels have become increasingly important in the fields of tissue engineering and drug delivery. However, their biol. applications are greatly limited by the weak mechanics and poor stability under a physiol. environment. Herein, we developed a stable, strong, and injectable hydrogel by linking strong micelle crosslinking with tetra-armed PEG. This dual crosslinking strategy has not only made hydrogels nonswelling but also maintained the relative integrity of the gel network during the degradation process, both of which work together to ensure the mech. strength and stability of our hydrogel under a physiol. environment. A compressive stress of 40 MPa was achieved at 95% strain, and the mech. properties could remain stable even after immersion into a physiol. environment for two months. Besides, it also showed outstanding antifatigue properties, good tissue adhesion, and good cytocompatibility. On the basis of these characteristics, these dual crosslinking injectable hydrogels would find appealing application in biomedicine especially for the repair of load-bearing soft tissues.

ACS Biomaterials Science & Engineering 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 C6H8O3, SDS of cas: 517-23-7.

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

Qin, Zezhao published the artcileNonswellable and Tough Supramolecular Hydrogel Based on Strong Micelle Cross-Linkings, Related Products of esters-buliding-blocks, the publication is Biomacromolecules (2019), 20(9), 3399-3407, database is CAplus and MEDLINE.

Because of the difference in osmotic pressure, most tough hydrogels swell under physiol. conditions, which seriously weakens their mech. properties, limiting their applications in biomedicine. Herein, a novel strategy based on strong and high-d. micelle cross-linkings is proposed to prepare nonswellable and tough hydrogel. To realize a strong micelle cross-linker, the synergetic effect of hydrophobic and quadruple hydrogen-bonding interactions is employed by introducing an alkyl chain-protected ureido pyrimidinone moiety into a segmented copolymer backbone. The length of the alkyl is the key factor in determining the strength of the hydrophobic interaction, which was carefully tailored to gain micelles with high strength and suitable solubility A supramol. hydrogel was formed in situ by simply linking micelle cross-linkers with poly(ethylene glycol) chains. The strong and high-d. micelle cross-linkings restrain multiple effective chains outside the micelle from stretching during swelling, and the deformability of micelle cross-linkings disperses the local stress to maintain the network with high crosslinking d. upon loading. Therefore, the hydrogel exhibited an outstanding nonswelling behavior under physiol. conditions and excellent mech. properties with a compressive strength of 4 MPa. The rapid in situ gelation also facilitated injection and cell encapsulation. Meanwhile, it also showed good tissue adhesion, cytocompatibility, and suitable degradability. This novel and facile strategy can offer new insights into the exploitation of cross-linkings to prepare nonswellable hydrogels for biomedical applications.

Biomacromolecules 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 C6H8O3, Related Products of esters-buliding-blocks.

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