2495-37-6 Archives - Page 3 of 10 - Esters-buliding-blocks

Wang, Jin-Ying team published research in Chinese Journal of Polymer Science in 2021 | 2495-37-6

2495-37-6, Benzyl methacrylate, also known as Benzyl methacrylate, is a useful research compound. Its molecular formula is C11H12O2 and its molecular weight is 176.21 g/mol. The purity is usually 95%.
Benzyl methacrylate is a chemical compound that belongs to the group of benzyl compounds. It has a copolymer structure with methyl ethyl methacrylate (MEMA) and hydroxyl groups. Benzyl methacrylate is produced by polymerization of benzyl chloride with allyl carbonate in the presence of radiation, forming a polymeric matrix. The morphology of this copolymer depends on the length of the benzyl chains and the concentration of MEMA., Recommanded Product: Benzyl methacrylate

Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. 2495-37-6, formula is C11H12O2, Name is Benzyl methacrylate. They perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Recommanded Product: Benzyl methacrylate.

Wang, Jin-Ying;Ni, Yuan-Yuan;Cheng, Jian-Nan;Zhang, Li-Fen;Cheng, Zhen-Ping research published 《 Molar Mass Dispersity Control by Iodine-mediated Reversible-deactivation Radical Polymerization》, the research content is summarized as follows. Dispersity (D) of polymers has a great effect on the properties of polymeric materials, and therefore how to control D is very important but still a huge challenge in polymer synthesis, especially for reversible-deactivation radical polymerization (RDRP) strategy. Herein, we successfully developed a novel strategy to adjust D of polymers by visible light-controlled reversible complexation mediated living radical polymerization (RCMP) and combination of single-electron transfer-degenerative chain transfer living radical polymerization (SET-DTLRP) at room temperature In RCMP system, 2-iodo-2-methylpropionitrile (CP-I) and Et 2-iodo-2-phenylacetate (EIPA) were used as alkyl iodide initiators, by using Me methacrylate (MMA) as the model monomer and n-butylacrylate (BA) as the end-capping reagent to regulate D of polymers. Subsequently, we successfully prepared the block copolymer PMMA-b-PBA with adjustable D by reactivating the polymer end-chains via SET-DTLRP in the presence of copper wire, fully demonstrating that it is a promising strategy that can keep the “living” feature of polymers while regulating their molar mass dispersities easily.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Wang, Hyun Suk team published research in Journal of the American Chemical Society in 2022 | 2495-37-6

Formula: C11H12O2, Benzyl methacrylate, also known as Benzyl methacrylate, is a useful research compound. Its molecular formula is C11H12O2 and its molecular weight is 176.21 g/mol. The purity is usually 95%.
Benzyl methacrylate is a chemical compound that belongs to the group of benzyl compounds. It has a copolymer structure with methyl ethyl methacrylate (MEMA) and hydroxyl groups. Benzyl methacrylate is produced by polymerization of benzyl chloride with allyl carbonate in the presence of radiation, forming a polymeric matrix. The morphology of this copolymer depends on the length of the benzyl chains and the concentration of MEMA., 2495-37-6.

Ester is a chemical compound derived from an oxoacid (organic or inorganic) in which at least one –OH hydroxyl group is replaced by an –O– alkyl (alkoxy) group, 2495-37-6, formula is C11H12O2, Name is Benzyl methacrylate. as in the substitution reaction of a carboxylic acid and an alcohol. Formula: C11H12O2.

Wang, Hyun Suk;Truong, Nghia P.;Pei, Zhipeng;Coote, Michelle L.;Anastasaki, Athina research published 《 Reversing RAFT Polymerization: Near-Quantitative Monomer Generation Via a Catalyst-Free Depolymerization Approach》, the research content is summarized as follows. The ability to reverse controlled radical polymerization and regenerate the monomer would be highly beneficial for both fundamental research and applications, yet this has remained very challenging to achieve. Herein, we report a near-quant. (up to 92%) and catalyst-free depolymerization of various linear, bulky, crosslinked, and functional polymethacrylates made by reversible addition-fragmentation chain-transfer (RAFT) polymerization Key to our approach is to exploit the high end-group fidelity of RAFT polymers to generate chain-end radicals at 120°C. These radicals trigger a rapid unzipping of both conventional (e.g., poly(Me methacrylate)) and bulky (e.g., poly(oligo(ethylene glycol) Me ether methacrylate)) polymers. Importantly, the depolymerization product can be utilized to either reconstruct the linear polymer or create an entirely new insoluble gel that can also be subjected to depolymerization This work expands the potential of polymers made by controlled radical polymerization, pushes the boundaries of depolymerization, offers intriguing mechanistic aspects, and enables new applications.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Wang, Chen-Gang team published research in ACS Macro Letters in 2021 | 2495-37-6

Glycerides are fatty acid esters of glycerol; they are important in biology, being one of the main classes of lipids and comprising the bulk of animal fats and vegetable oils. 2495-37-6, formula is C11H12O2, Name is Benzyl methacrylate. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Application In Synthesis of 2495-37-6.

Wang, Chen-Gang;Chong, Amerlyn Ming Liing;Goto, Atsushi research published 《 One Reagent with Two Functions: Simultaneous Living Radical Polymerization and Chain-End Substitution for Tailoring Polymer Dispersity》, the research content is summarized as follows. The mol. weight distribution of polymer, termed dispersity (D), is a fundamental parameter that determines polymer properties. Sodium azide (NaN₃) functions as a catalyst in organocatalyzed living radical polymerization when the reaction medium is nonpolar. In contrast, NaN₃ can act as a nucleophile when the reaction medium is polar. In this paper, we report an efficient approach to dispersity control by exploiting the dual functions of NaN₃ under the varied solvent polarity. Simultaneous polymerization and chain-end substitution allowed us to tune the D values of various polymethacrylates and poly(Bu acrylate). Notably, the D value could be tuned to a wide range approx. from 1.2 to 2.0 for polymethacrylates and to 3.8 for poly(Bu acrylate). This approach afforded polymer brushes on surfaces with tailored D values. An interesting finding was that the polymer brushes exhibited a unique interaction with external mols., depending on the D value.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Tran, Bich Ngoc team published research in ACS Applied Polymer Materials in 2021 | 2495-37-6

Tran, Bich Ngoc;Thickett, Stuart C.;Agarwal, Vipul;Zetterlund, Per B. research published 《 Influence of Polymer Matrix on Polymer/Graphene Oxide Nanocomposite Intrinsic Properties》, the research content is summarized as follows. Elec. conductive polymer nanocomposite films comprising reduced graphene oxide (rGO) have been prepared using aqueous emulsion-based techniques with a specific focus on the effects of the polymer matrix. Polymer matrixes with glass transition temperatures in a suitable range were selected such that film formation can occur at ambient temperature via drop-casting of the as-obtained nanocomposite latexes. The monomers Me methacrylate (MMA), benzyl methacrylate (BzMA), and styrene (St) were each copolymerized with Bu acrylate (nBA) using radical polymerization implemented as miniemulsion polymerization or soap-free emulsion polymerization Thermal annealing of the films converted GO to rGO, thus imparting elec. conductivity In agreement with theor. calculations related to the propensity of GO sheets to operate as Pickering stabilizers based on polarity and interfacial tension, nanocomposites with higher elec. conductivity resulted for monomers of lower polarity such as nBA/St and nBA/BzMA compared to the more polar system nBA/MMA. Incorporation of GO resulted in higher Young’s modulus and more brittle materials regardless of the polymer matrix. The results demonstrate that relatively subtle changes in the nature of the polymer matrix can have significant effects on nanocomposite properties.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Sun, Qilin team published research in Synthesis in 2022 | 2495-37-6

Sun, Qilin;Pang, Liangzhi;Mao, Shuxian;Fan, Wu;Zhou, Yuyi;Xu, Jing;Li, Suhua;Li, Qiankun research published 《 Cobalt-Catalyzed Hydroxyperfluoroalkylation of Alkenes with Perfluoroalkyl Bromides and Atmospheric Oxygen》, the research content is summarized as follows. A mild and efficient method for the cobalt-catalyzed hydroxyperfluoroalkylation of alkenes, e.g., 1-piperidinecarboxylic acid, 4-methylene-, 1,1-dimethylethyl ester has been developed. This method demonstrated broad substrate scope, good yields, and mild conditions with the tolerance of mono-, di-, and trisubstituted alkenes including both styrenes and non-activated aliphatic olefins. This strategy offered a valuable solution for rapid and efficient construction of β-perfluoroalkyl alcs., e.g., tert-Bu 4-hydroxy-4-(2,2,3,3,4,4,5,5,6,6,7,7,7-tridecafluoroheptyl)piperidine-1-carboxylate using widely available and inexpensive perfluoroalkyl bromides like bromochlorodifluoro methane, 1,2-dibromo-1,1,2,2-tetrafluoro ethane and 4-bromo-3,3,4,4-tetrafluoro-1-butene, etc. and atm. oxygen.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Swisher, Nicholas A. team published research in ACS Macro Letters in 2021 | 2495-37-6

Polyesters are important plastics, with monomers linked by ester moieties. Phosphoesters form the backbone of DNA molecules. 2495-37-6, formula is C11H12O2, Name is Benzyl methacrylate.Nitrate esters, such as nitroglycerin, are known for their explosive properties. Related Products of 2495-37-6.

Swisher, Nicholas A.;Corbin, Daniel A.;Miyake, Garret M. research published 《 Synthesis, Characterization, and Reactivity of N-Alkyl Phenoxazines in Organocatalyzed Atom Transfer Radical Polymerization》, the research content is summarized as follows. Core-modified N-alkyl phenoxazines were synthesized and evaluated as photoredox catalysts (PCs) in organocatalyzed atom transfer radical polymerization (O-ATRP). Each PC was characterized and found to strongly absorb UVA and visible light, undergo reversible oxidation to radical cation species, and exhibit high quantum yields of fluorescence (F_f > 77%). PCs found to exhibit intramol. charge transfer in their excited state were capable of the controlled synthesis of poly(Me methacrylate) with good mol. weight control (I* ~100%) and moderately low dispersity (D < 1.30).

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Tong, Yujie team published research in Macromolecules (Washington, DC, United States) in 2021 | 2495-37-6

Name: Benzyl methacrylate, Benzyl methacrylate, also known as Benzyl methacrylate, is a useful research compound. Its molecular formula is C11H12O2 and its molecular weight is 176.21 g/mol. The purity is usually 95%.
Benzyl methacrylate is a chemical compound that belongs to the group of benzyl compounds. It has a copolymer structure with methyl ethyl methacrylate (MEMA) and hydroxyl groups. Benzyl methacrylate is produced by polymerization of benzyl chloride with allyl carbonate in the presence of radiation, forming a polymeric matrix. The morphology of this copolymer depends on the length of the benzyl chains and the concentration of MEMA., 2495-37-6.

Tong, Yujie;Liu, Yiming;Chen, Qi;Mo, Yitian;Ma, Yuguo research published 《 Long-Lived Triplet Excited-State Bichromophoric Iridium Photocatalysts for Controlled Photo-Mediated Atom-Transfer Radical Polymerization》, the research content is summarized as follows. The “energy reservoir” tactic is used for the first time to regulate the photochem. properties, including excited lifetime and photoluminescence quantum yield of photocatalysts (PCs) for controlled photo-mediated atom transfer radical polymerization (ATRP). Polymerizations are efficiently conducted using long-lived bichromophoric complexes Ir(ppy-s-PPO) and Ir(ppy-s-DBP) as PCs at the ppm level (<10 ppm). The relationships between PC properties and the catalytic performance are analyzed and discussed. Critically, the prolongation of excited lifetime is beneficial for promoting electron transfer during the activation/initiation step and increasing the concentrations of deactivators. Therefore, faster reversible deactivation and a better activation-deactivation equilibrium were achieved. In comparison to Ir(tBuppy)₃ with a short excited lifetime, Ir(ppy-s-PPO) and Ir(ppy-s-DBP) offered the advantage to synthesize poly(Me methacrylate) with high mol. weights at low initiator loadings. Furthermore, featuring both a long lifetime and an appropriate quantum yield, Ir(ppy-s-PPO) had better control than Ir(tBuppy)₃ over the polymerizations of other monomers, including benzyl methacrylate, iso-Bu acrylate, and styrene. It is an effective method to mediate liveness in polymerization by regulating the excited lifetime and quantum yield of PCs. This study may shed light on the design strategy of high-performance photocatalysts with broad utility for photopolymerization reactions.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Tsochatzis, Emmanouil D. team published research in Food Chemistry in 2021 | 2495-37-6

SDS of cas: 2495-37-6, Benzyl methacrylate, also known as Benzyl methacrylate, is a useful research compound. Its molecular formula is C11H12O2 and its molecular weight is 176.21 g/mol. The purity is usually 95%.
Benzyl methacrylate is a chemical compound that belongs to the group of benzyl compounds. It has a copolymer structure with methyl ethyl methacrylate (MEMA) and hydroxyl groups. Benzyl methacrylate is produced by polymerization of benzyl chloride with allyl carbonate in the presence of radiation, forming a polymeric matrix. The morphology of this copolymer depends on the length of the benzyl chains and the concentration of MEMA., 2495-37-6.

Tsochatzis, Emmanouil D.;Lopes, Joao Alberto;Gika, Helen;Dalsgaard, Trine Kastrup;Theodoridis, Georgios research published 《 A fast SALLE GC-MS/MS multi-analyte method for the determination of 75 food packaging substances in food simulants》, the research content is summarized as follows. A simple and fast method was developed for the simultaneous determination of 75 plastic food contact material (FCM) in liquid food simulants, at levels of a few ng g-1. The method employs an optimized salt-assisted liquid-liquid extraction for all EU-regulated ethanol/H2O food simulants, in the presence of 10% NaCl (simulants A and C) or 5% NaCl (simulant D1), and dichloromethane as the extracting solvent. Gas chromatog. with triple-quad MS operating in multiple reaction monitoring acquisition was used, applying isotope dilution with selected deuterated compounds Adequate sensitivity was demonstrated for all analytes. The results also showed sufficient accuracy for the majority of substances, with recoveries of 70-120% and repeatability (expressed as relative standard deviations, RSDs) smaller than 15%. The method was applied to the anal. of FCM multilayer items after undergoing migration testing according to the specifications of the current EU legislation in force.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Sheta, Ahmed M. team published research in Angewandte Chemie, International Edition in 2021 | 2495-37-6

Sheta, Ahmed M.;Alkayal, Anas;Mashaly, Mohammad A.;Said, Samy B.;Elmorsy, Saad S.;Malkov, Andrei V.;Buckley, Benjamin R. research published 《 Selective Electrosynthetic Hydrocarboxylation of α,β-Unsaturated Esters with Carbon Dioxide》, the research content is summarized as follows. An electrochem. approach that is able to hydrocarboxylate α,β-unsaturated alkenes with excellent regioselectivity and ability to carboxylate hindered substrates to afford α-quaternary center carboxylic acids was reported. The process required no chromatog. and products were purified by simple crystallization from reaction mixture after work-up.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Shahrokhinia, Ali team published research in Macromolecules (Washington, DC, United States) in 2022 | 2495-37-6

Shahrokhinia, Ali;Rijal, Sahaj;Sonmez Baghirzade, Busra;Scanga, Randall A.;Biswas, Priyanka;Tafazoli, Shayesteh;Apul, Onur G.;Reuther, James F. research published 《 Chain Extensions in PhotoATRP-Induced Self-Assembly (PhotoATR-PISA): A Route to Ultrahigh Solids Concentrations and Click Nanoparticle Networks as Adsorbents for Water Treatment》, the research content is summarized as follows. Photocontrolled atom transfer radical polymerization induced self-assembly (PhotoATR-PISA) mediated by UV light (λ = 365 nm) was utilized to obtain polymer nanostructures with variable morphologies, including nanospheres, worm-like micelles and vesicles, at ambient temperature using ppm levels (ca. < 20 ppm) of copper catalyst. Using Cu(II)Br₂/tris(pyridin-2-ylmethyl)amine (TPMA) catalyst systems and functional ATRP initiators, PhotoATR-PISA was performed all in one-pot via sequential chain extension starting from solvophilic poly(oligo(ethylene glycol) Me ether methacrylate) (POEGMA) macroinitiator growth followed by PISA using different proportions of glycidyl methacrylate (GMA) and/or benzyl methacrylate (BMA) core-forming blocks forming alkyne-functional polymer nanoparticles. Remarkably, multiple, iterative chain extensions were accomplished introducing addnl. GMA and BMA monomers in multiple steps without addnl. solvent leading to stable nanoparticle dispersions with record-high final solid concentrations of 63 w% and 79 w%, resp. Core crosslinked nanoparticles (CCL NPs) were synthesized by incorporating N,N-cystamine bismethacrylamide (CBMA) crosslinkers in later stage chain extensions providing a route to CCL nanoworms. Furthermore, introducing BMA and GMA in varying orders sequentially allowed for the synthesis of sequence-controlled gradient copolymers, though this had limited effects on nanoparticle morphol. Finally, utilizing the copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC) click reactions between alkyne-functionalized NPs and bisazide, telechelic poly(ethylene glycol) (PEG), nanostructured networks were fabricated consisting of nanospherical, beaded worm, nanoworm and vesicle morphologies. The interstitial porosity of these ClickNP networks allows them to be potent adsorbents with explored applications in water treatment demonstrated via the rapid uptake of phenanthrene pollutants from aqueous solutions

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics