Category: 627-93-0

Aubrecht, Jaroslav published the artcileCritical evaluation of parameters affecting Cu nanoparticles formation and their activity in dimethyl adipate hydrogenolysis, Synthetic Route of 627-93-0, the publication is Catalysis Today (2022), 61-71, database is CAplus.

Supported copper catalysts are promising alternative to replace CuCr catalysts in ester hydrogenolysis and decrease the environmental footprint of the process. However, the effect of the support properties on the Cu nanoparticles formation and, consequently, on the final hydrogenolysis performance has not been investigated in detail. Therefore, we have selected 10 supports with different textural-structural properties and impregnated them by incipient wetness impregnation to achieve 8 wt% Cu loading. Although the silica-based supports provided much larger surface area to deposit Cu compared to ZnO, MgO, or TiO₂, the final Cu dispersion was similar for these catalysts due to the insufficient electrostatic attraction. A significant improvement was observed when using ZrO₂ as a support, while the best Cu dispersion was achieved using alumina-based supports. The reduced catalysts were tested in di-Me adipate (DMA) hydrogenolysis to obtain hexane-1,6-diol (HDOL). Due to the good Cu dispersion ensured by ZrO₂ and alumina supports, they outperformed the rest of the catalysts reaching the highest DMA conversion of 36 and 22-25%, resp. Moreover, Cu-ZrO₂ reached the highest hydrogenolysis activity (TOFH) due to a good copper-zirconia interaction. The maximum HDOL selectivity of about 8% was obtained over alumina-based catalysts. The increasing number of acid-base sites was found to be responsible for decreasing HDOL selectivity. Over these sites, a large amount of transesterification byproducts (<80%) and other side products were formed. Although the larger support surface area may ensure a better Cu dispersion, the acid-base sites or electrostatic attraction during impregnation play a key role by affecting the Cu nanoparticle formation and, consequently, the final catalyst performance.

Catalysis Today 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, Synthetic Route of 627-93-0.

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

Bielicka-Daszkiewicz, Katarzyna published the artcileExtraction of organic compounds released from dental materials, Related Products of esters-buliding-blocks, the publication is Microchemical Journal (2021), 106594, database is CAplus.

Extraction method based on polymer inclusion membranes device was used for isolation organic compounds released from dental materials. These compounds were isolated form artificial saliva solution Three different membranes were used, it based on cellulose triacetate and 2-nitrophenyloctyl ether as plasticizer. One of membranes addnl. contained Aliquat-336 as carrier of analytes. The best efficiency of polymer membranes was achieved between 80 and 100% for three components membrane. The retention properties of polymeric membranes was described and confirmed using Hansen Solubility Parameter determined for each isolated compound and membrane components. Determination of this parameter allows to describe the interaction between isolated compound and membrane, and conclude which membrane composition gives the best retention properties.

Microchemical Journal 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, Related Products of esters-buliding-blocks.

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

Addington, Cody K. published the artcileEstimation of the Emission Characteristics of SVOCs from Household Articles Using Group Contribution Methods, Recommanded Product: Dimethyl adipate, the publication is Environmental Science & Technology (2020), 54(1), 110-119, database is CAplus and MEDLINE.

Human risk from consumer products chems. is a function of hazard and exposure. There is an effort to quantify chem. exposure due to household articles, e.g., furniture and building materials. Polymers and plastic materials make up a substantial portion of these articles, which may contain chem. additives, e.g., plasticizers. When these additives are not bound to the polymer matrix, they are free to diffuse throughout it and leach or be emitted from the surface. The authors implemented a method to predict plasticizer emissions from polyvinyl chloride (PVC) products, based on group contribution methods which considered a free volume effect to estimate activity coefficients for chems. in polymer-solvent solutions Using estimated activity coefficients, steady-state gas phase concentrations were calculated for plasticizers in equilibrium with the polymer surface (y₀). This method only used the structure of the chem. and polymer, the weight fraction, and physicochem. properties to rapidly estimate y₀ at different weight fractions in PVC. Using the predicted y₀ values and weight fraction data from public databases, plasticizer exposures associated with 72 PVC-containing articles were estimated using a high through-put model. Potential exposures associated with plasticizer substitutions in these products were also estimated

Environmental Science & 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, Recommanded Product: Dimethyl adipate.

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

Dhalani, Jayesh published the artcileRapid identification of fatty acids from Leptadenia reticulata areal parts by GC-MS, Recommanded Product: Dimethyl adipate, the publication is Journal of Scientific & Industrial Research (2020), 79(8), 709-711, database is CAplus.

The investigation was carried out to identify the various fatty acids present in the areal parts of Leptadenia reticulata, one of the important medicinal plants of India. Non-polar (Petroleum Ether) extract of areal parts was used for this study. Saponification was carried out using dried extract to obtain fatty acids. Further esterification of saponifiable fraction was performed to obtain fatty acid Me ester. Extracted fatty acid Me esters were analyzed by gas chromatog. and mass spectrometry (GC-MS) technique using NIST library. From GC-MS anal., 14 components were identified in areal parts of Leptadenia reticulata. This study reveals that L. reticulata is a good source of fatty acids with medicinal properties. This methodol. has the advantage of excellent identification of Non polar moiety of medicinal plant.

Journal of Scientific & Industrial Research 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, Recommanded Product: Dimethyl adipate.

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

Trivedi, G. V. N. published the artcileMicroencapsulated phase change material suspensions for cool thermal energy storage, Synthetic Route of 627-93-0, the publication is Materials Chemistry and Physics (2020), 122519, database is CAplus.

In this study, di-Me adipate, an organic ester, as the phase change material (core) was microencapsulated into melamine-formaldehyde (shell) in different shell-to-core ratios using in-situ polymerization technique. The microencapsulated phase change material suspensions (MPCMS) were prepared through the dispersion of microcapsules in appropriate proportions into the carrier fluid. The surface morphol. of the prepared microcapsules were observed to be almost spherical. The microcapsules with low crystallinity offered greater resistance towards crack, which was attributed to the flexible structure of the shell. Surface structure studies has confirmed the chem. stability between the core and shell. In addition, the microcapsules exhibited good latent heat enthalpy of around 53 kJ/kg and 70 kJ/kg and they were thermally stable up to 160°C. Furthermore, the viscosity of MPCMS was found to be very low, which enabled them to exhibit Newtonian flow behavior. Thus, the test results have signified the MPCMS to be considered as a viable candidate for cool thermal energy storage application.

Materials Chemistry and Physics 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 C8H11BO2, Synthetic Route of 627-93-0.

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

Trivedi, G. V. N. published the artcileCryogenic conditioning of microencapsulated phase change material for thermal energy storage, Recommanded Product: Dimethyl adipate, the publication is Scientific Reports (2020), 10(1), 18353, database is CAplus and MEDLINE.

Microencapsulation is a viable technique to protect and retain the properties of phase change materials (PCMs) that are used in thermal energy storage (TES) applications. In this study, an organic ester as a phase change material was microencapsulated using melamine-formaldehyde as the shell material. This microencapsulated PCM (MPCM) was examined with cyclic cryogenic treatment and combined cyclic cryogenic heat treatment processes. The surface morphol. studies showed that the shell surfaces had no distortions or roughness after cryogenic treatment. The cryogenically conditioned microcapsules exhibited diffraction peak intensity shifts and crystal structure changes. The onset of melting for the nonconditioned and conditioned microcapsules were measured to be 8.56-9.56°C, resp. Furthermore, after undergoing the cryogenic and heat treatment processes, the PCM microcapsules had appreciable latent heat capacities of 39.8 kJ/kg and 60.7 kJ/kg, resp. Addnl., the microcapsules were found to have good chem. stability after the cryogenic treatment. In addition, the cryogenically conditioned microcapsules were found to be thermally stable up to 128.9°C, whereas the nonconditioned microcapsules were stable up to 101.9°C. Based on the test results, it is obvious that the cryogenically conditioned microcapsules exhibited good thermal properties and are very desirable for cool thermal energy storage applications.

Scientific Reports 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 C7H8BFO2, Recommanded Product: Dimethyl adipate.

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

Demarteau, Jeremy published the artcileAminolytic upcycling of poly(ethylene terephthalate) wastes using a thermally-stable organocatalyst, Application In Synthesis of 627-93-0, the publication is Polymer Chemistry (2020), 11(30), 4875-4882, database is CAplus.

Poly(ethylene terephthalate) (PET) is one of the most commonly used plastics for a wide range of applications, but is also one on the main contributors to the accumulation of plastic waste in the environment. Herein, we propose an aminolytic method to depolymerise PET using various amino-alcs. by organocatalysis and their subsequent use for the production of poly(ester-amide)s. This research aims to highlight the potential of thermally stable acid-base mixtures for depolymerization of PET in the presence of amines, specifically TBD : MSA. The chemoselectivity of the process favors the formation of diol terephthalamides in high yields. Different amino alcs. are also explored in order to obtain diols with secondary amine or ether functionalities. Finally, these novel terephthalamide diols are investigated as novel synthons for the synthesis of poly(ester-amide)s, showing potential for the “creative reuse” of plastic wastes.

Polymer Chemistry 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 In Synthesis of 627-93-0.

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

Serrano-Arnaldos, Mar published the artcileSustainable synthesis of branched-chain diesters, Formula: C8H14O4, the publication is Journal of Biotechnology (2021), 91-99, database is CAplus and MEDLINE.

Esters from branched alcs. and dicarboxylic linear acids are widely used as lube bases due to their good performance at low temperatures This work proposes a new process to synthesize bis(2-ethylbutyl) adipate and bis(2-ethylbutyl) sebacate by using the lipase-based catalyst Novozym 435 in a solvent-free system. Different reaction strategies have been tested in order to minimize 2-ethyl-1-butanol losses due to its evaporation and optimum operation conditions have been determined: 2.5% of biocatalyst, 50°C and a molar excess of alc. of 15% for the adipic diester and of 25% for the sebacic one. It has also been proven that the immobilized enzyme can be reused in seven successive reaction cycles, achieving high yields without an appreciable reduction of activity. This biocatalytic pathway is a promising basis for the development of a more sustainable large scale process for obtaining biodegradable lubricants, as it is pointed out by productivity, economic and green metrics calculations

Journal of Biotechnology 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 C21H24O8, Formula: C8H14O4.

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

Kurouchi, Hiroaki published the artcileSynthesis of Medium-Ring-sized Benzolactams by Using Strong Electrophiles and Quantitative Evaluation of Ring-size Dependency of the Cyclization Reaction Rate, Name: Dimethyl adipate, the publication is Journal of Organic Chemistry (2020), 85(2), 876-901, database is CAplus and MEDLINE.

Benzolactams with medium-sized rings were synthesized via electrophilic aromatic substitution reaction of carbamoyl cations (R₁R₂N⁺=C=O) in good to high yields without dilution These reactions were utilized to quant. examine the extent of retardation of medium-sized ring formation, compared to 5- or 6-membered ring formation. The order of reaction rates of formation of cyclic benzolactams is 6- > 5- > 7- > 8- > 9-membered ring at 25°. The present reaction provides a route to 8- and 9-membered benzolactams.

Journal of Organic Chemistry 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

Mahato, Sanjit K. published the artcileIridium(III)-Catalyzed Direct Intermolecular Chemoselective α-Amidation of Masked Aliphatic Carboxylic Acids with Dioxazolones via Nitrene Transfer, Product Details of C8H14O4, the publication is ACS Catalysis (2021), 11(12), 7126-7131, database is CAplus.

The Ir(III)-catalyzed direct α-C-H amidation of imidazole-masked aliphatic carboxylic acids I [R = H, Me; R¹ = n-Bu, cyclopentylmethyl, 4-bromophenyl, 1H-indol-3-ylmethyl, etc.; RR¹ = -(CH₂)₃-, -(CH₂)₄-] with dioxazolones II (R² = n-Pr, 4-bromophenyl, 2-phenylethyl, furan-2-yl, etc.) for the preparation of amidated imidazoles III is reported. The presence of an imidazole moiety as a directing group is a key to the success of the reaction. The products III (R = H; R¹ = n-Bu; R² = Ph) can be easily converted to N-(1-oxo-1-(pentylamino)hexan-2-yl)benzamide and N-((1,1,1,3,3,3-hexafluoropropan-2-yl)oxy)benzamide in a simple procedure. The reaction shows a broad substrate scope for various substituted 2-acylimidazoles I, as well as a variety of dioxazolone derivatives II with important functional groups being tolerated. The reaction mechanism was investigated by deuterium-labeling experiments, Hammett plots, NMR, and FAB-MS, and propose the generation of an iridium nitrene intermediate.

ACS Catalysis 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, Product Details of C8H14O4.

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