Author: Jessica.F

Application In Synthesis of 1-Phenylethyl acetate《CO₂-expanded bio-based liquids as novel solvents for enantioselective biocatalysis》 was published in 2017. The authors were Hoang, Hai Nam;Nagashima, Yoshihiro;Mori, Shuichi;Kagechika, Hiroyuki;Matsuda, Tomoko, and the article was included in《Tetrahedron》. The author mentioned the following in the article:

For the first time, CO₂-expanded bio-based liquids were reported as novel and sustainable solvents for biocatalysis. Herein, it was found that by expansion with CO₂, 2-methyltetrahydrofuran (MeTHF), and other bio-based liquids, which were not favorable solvents for immobilized Candida antarctica lipase B (Novozym 435) catalyzed transesterification, were tuned into excellent reaction media. Especially, for the kinetic resolution of challenging bulky secondary substrates such as rac-1-adamantylethanol, the lipase displayed very high activity with excellent enantioselectivity (E value > 200) in CO₂-expanded MeTHF (MeTHF concentration 10% volume/volume, 6 MPa), whereas there was almost no activity observed in conventional organic solvents. To complete the study, the researchers used 1-Phenylethyl acetate (cas: 93-92-5) .

1-Phenylethyl acetate(cas:93-92-5) is a carboxylic ester. Application In Synthesis of 1-Phenylethyl acetate It may be prepared by acetylation of methyl phenyl carbinol; from benzaldehyde by reacting with magnesium methyl bromide and subsequent acetylation; from 1-bromoethylbenzene and silver acetate in acetic acid.

Reference:
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Cetti, Jonathan;Eike, David;Ferrero Vallana, Federico M.;Gunaratne, H. Q. Nimal;Holland, Lynette A. M.;Puga, Alberto V.;Seddon, Kenneth R.;Todini, Oreste published 《Modeling the Vapor-Liquid Equilibria of Ionic Liquids Containing Perfume Raw Materials》 in 2017. The article was appeared in 《Journal of Chemical & Engineering Data》. They have made some progress in their research.Category: esters-buliding-blocks The article mentions the following:

In this work, the vapor-liquid equilibrium of binary and multinary systems comprise perfume raw materials and ionic liquids have been computed using two different models: COSMO-RS, a solvation model, and UNIFAC, a group contribution method. For systems already well-known in the literature, a comparison with exptl. data was performed, and good agreement was observed with both models. Although UNIFAC was not applicable to nonparametrized ionic liquids, COSMO-RS proved very reliable in predicting the vapor-liquid equilibrium of solutions of perfume raw materials in new-to-the-world ionic liquids This opens the door for the prediction and modeling of new formulations for novel consumer products, prior to embarking on detailed exptl. investigations. And Methyl 2,4-dihydroxy-3,6-dimethylbenzoate (cas: 4707-47-5) was used in the research process.

Methyl 2,4-dihydroxy-3,6-dimethylbenzoate(4707-47-5) is used in biological study as role of androgens in inducing distinct response of epithelial-mesenchymal transition factors in human prostate cancer cells.Category: esters-buliding-blocks

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Ester – an overview | ScienceDirect Topics

Category: esters-buliding-blocksIn 2021, Li, Fu-xiao;Li, Dong-long;Wang, Hui-yi;Li, Qiu-feng;Liu, Ji-dong published 《Analysis of volatile flavor compounds of γ-aminobutyric acid soybean paste》. 《Xiandai Shipin Keji》published the findings. The article contains the following contents:

To evaluate the flavor difference between com. soybean paste and γ-aminobutyric acid (GABA) bean paste, headspace solid-phase microextraction (HS-SPME) and gas chromatog.-mass spectrometry (GC-MS) were used to measure and analyze the volatile components and the common indexes in nine com. soybean paste samples (S1-S9) and the GABA soybean paste sample (S10) . The key volatile components were determined by principal component anal. (PCA) and odor activity value (OAV) . The results showed that 144 compounds in eight categories were detected in 10 soybean paste samples and the content of γ-aminobutyric acid in S10 reached 1.87 mg/g, the pH value was 4.69, and the color was bright without impurities. Among them, esters, alcs. and acids accounted for more than 60% of the total volatile components. Addnl., the results of PCA of 41 common volatile substances were identified in 10 soybean paste samples, demonstrating that 2-methyl-butyraldehyde, 3-methyl-butyraldehyde, dimethyl-trisulfide and guaiacol significantly contributed to the flavor formation of bean paste. Besides, the GABA soybean paste has a rich variety of flavors, in which the contents of 2-pentylfuran, 2-ethyl-6-methylpyrazine, guaiacol and di-Me trisulfide (which exhibited aromas of mung bean, nut and clove) were significantly higher than other samples. This could be the reason for some differences in flavor substances between GABA soybean paste and other samples. The results of this study could provide theor. reference for the development of functional soybean paste and the flavor improvement in soybean paste products. The experimental procedure involved many compounds, such as 1-Phenylethyl acetate (cas: 93-92-5) .

1-Phenylethyl acetate(cas:93-92-5) is a carboxylic ester. Category: esters-buliding-blocks It may be prepared by acetylation of methyl phenyl carbinol; from 1-bromoethylbenzene and silver acetate in acetic acid; from benzaldehyde by reacting with magnesium methyl bromide and subsequent acetylation.

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

Naddeo, Marco;Vigliotta, Giovanni;Pellecchia, Claudio;Pappalardo, Daniela published 《Synthesis of bio-based polymacrolactones with pendant eugenol moieties as novel antimicrobial thermoplastic materials》 in 2020. The article was appeared in 《Reactive & Functional Polymers》. They have made some progress in their research.Related Products of 106-02-5 The article mentions the following:

In the last few decades there has been a continuous effort toward the synthesis of polymers from renewable resources. In this context we have presently developed novel and fully bio-based functionalized polymacrolactones bearing pendant eugenol moieties. These polymeric materials were obtained by exploiting the ring-opening copolymerization of two macrolactones, ω-6-hexadecenlactone (6HDL) and ω-pentadecalactone (PDL), both derived from renewable resources, in the presence of a pyridylamidozinc(II) complex, to produce random poly(6HDL-co-PDL) copolymers. Eugenol, a natural occurring essential oil with anti-microbial properties, was modified in its mercapto derivative, the 4-(3-mercaptopropyl)-2-methoxyphenol (TE). Subsequently, the thiol-ene addition reaction of the TE to the C-C double bond of the 6HDL monomeric units of the poly(6HDL-co-PDL) copolymers produced the functionalized polymacrolactones with pendant eugenol moieties. The melting temperatures and the thermal degradation behavior of the TE-functionalized copolymers were dependent on the copolymers composition The antimicrobial activity of TE-functionalized copolymers was tested for the bacterium E. coli on films. The toxicity of the samples was dependent on the amount of TE groups in the films. Our approach demonstrated the feasibility to covalently attach eugenol moieties to a polymacrolactone main chain and to impart antimicrobial properties to the macromol. chains.Oxacyclohexadecan-2-one (cas: 106-02-5) were involved in the experimental procedure.

Oxacyclohexadecan-2-one(cas:106-02-5) is a monomer used to make PGA-co-pentadecalactone polymers to be used in the development of directly compressed prolonged release tablets of slightly soluble drugs such as ketoprofen.Related Products of 106-02-5It may be used for the synthesis of poly(pentadecanolide) (PPDL) by Novozyme 435 catalyzed ring-opening polymerization.

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

Reference of Oxacyclohexadecan-2-oneIn 2020, Polloni, Andre E.;Chiaradia, Viviane;do Amaral, Ronaldo Jose F. C.;Kearney, Cathal;Gorey, Brian;de Oliveira, Debora;de Oliveira, Jose V.;de Araujo, Pedro H. H.;Sayer, Claudia;Heise, Andreas published 《Polyesters with main and side chain phosphoesters as structural motives for biocompatible electrospun fibres》. 《Polymer Chemistry》published the findings. The article contains the following contents:

Phosphoester containing polymers are promising materials in biomedical applications due to their biocompatibility and biodegradability. Utilizing thiol-ene chem., the synthesis of two novel structural polymer motives combining polyesters and phophoester groups was explored. The first polymer was obtained by coupling ene-functional poly(thioether-phosphoester) with thiol functional poly(pentadecalactone). While the coupling reaction was successful, yields remained low presumably due to inadequate endgroup stoichiometry. The second polymer comprised phosphoester side groups conjugated to unsaturated poly(globalide). Double bond conversions up to 84% were achieved depending of the type of phosphoester thiol and relative reactant ratios. The resulting polymers transitioned from solid semicrystaline to liquid amorphous with increasing degree of phosphoester conjugation. Electrospun fibers from polymers with 14% phosphoester conjugation allowed attachment and survival of human dermal fibroblasts, indicating their biocompatibility. These polymers represent a new class of easily accessible biocompatible polyester-phosphoester hybrid materials as potential building blocks for tunable biomaterials.Oxacyclohexadecan-2-one (cas: 106-02-5) were involved in the experimental procedure.

Oxacyclohexadecan-2-one(cas:106-02-5) is a natural product found in Lonicera japonica and Angelica archangelica.Reference of Oxacyclohexadecan-2-one It is a macrocyclic lactone that can be used as a flavoring agent and fragrance ingredient due to its musk flavor/odor.

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Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Application In Synthesis of Diethyl cyclobutane-1,1-dicarboxylate《A novel ring expansion of 1-carbethoxy-1,1-trimethylene-3-diazo-2-propanone》 was published in 1986. The authors were Miller, R. D.;Theis, W., and the article was included in《Tetrahedron Letters》. The author mentioned the following in the article:

Gas phase pyrolysis of title compound I gave butenolide II via ring enlargement initiated by the intramol. reaction of the intermediate ketene III with the pendant ester group. The experimental procedure involved many compounds, such as Diethyl cyclobutane-1,1-dicarboxylate (cas: 3779-29-1) .

Diethyl 1,1-cyclobutanedicarboxylate(cas:3779-29-1 Application In Synthesis of Diethyl cyclobutane-1,1-dicarboxylate) reacts with silicon to form diethyl esters and magnesium to form magnesium salts. The reaction time for this compound is short, which may be due to its ability to undergo debromination.

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

Application In Synthesis of 1-Phenylethyl acetate《Tropolonate Salts as Acyl-Transfer Catalysts under Thermal and Photochemical Conditions: Reaction Scope and Mechanistic Insights》 was published in 2020. The authors were Lyons, Demelza J. M.;Empel, Claire;Pace, Domenic P.;Dinh, An H.;Mai, Binh Khanh;Koenigs, Rene M.;Nguyen, Thanh Vinh, and the article was included in《ACS Catalysis》. The author mentioned the following in the article:

Acyl-transfer catalysis is a frequently used tool to promote the formation of carboxylic acid derivatives, which are important synthetic precursors and target compounds in organic synthesis. However, there have been only a few structural motifs known to efficiently catalyze the acyl-transfer reaction. Herein, we introduce a different acyl-transfer catalytic paradigm based on the tropolone framework. We show that tropolonate salts, due to their strong nucleophilicity and photochem. activity, can promote the coupling reaction between alcs. and carboxylic acid anhydrides or chlorides to give products under thermal or blue light photochem. conditions. Kinetic studies and d. functional theory calculations suggest interesting mechanistic insights for reactions promoted by this acyl-transfer catalytic system. And 1-Phenylethyl acetate (cas: 93-92-5) was used in the research process.

1-Phenylethyl acetate(cas:93-92-5) is a carboxylic ester. Application In Synthesis of 1-Phenylethyl acetate It may be prepared by acetylation of methyl phenyl carbinol; from benzaldehyde by reacting with magnesium methyl bromide and subsequent acetylation; from 1-bromoethylbenzene and silver acetate in acetic acid.

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

Product Details of 124-06-1《Combined application of high-throughput sequencing and UHPLC-Q/TOF-MS-based metabolomics in the evaluation of microorganisms and metabolites of dry-cured ham of different origins》 was published in 2021. The authors were Zhu, Yingying;Guo, Yun;Yang, Fenghong;Zhou, Changyu;Tang, Changbo;Zhou, Guanghong, and the article was included in《International Journal of Food Microbiology》. The author mentioned the following in the article:

Ham fermentation relies on environmental and indigenous microorganisms forming a rich microbiome, which is pivotal to taste and flavor formation. Previous studies have focused on the appearance of differences of microorganisms and metabolites, this study aims to establish the relationship between microorganisms and metabolites over a period of two years in the fermentation of hams from Jinghua (JH2), Xuanwei (XW2), Rugao (RG2), Iberian (IB2) and Parma (PA2). We profiled bacterial communities by sequencing the V3-V4 region of the 16S rRNA genes and metabolites were analyzed using LC-Q-TOF-MS. LefSe anal. showed that different biomarkers in five ham groups. OPLS anal. showed that most differential metabolites are amino acids and were associated with four metabolic pathways. Correlation anal. implies a firm pos. relationship between microorganisms and metabolites. This study provides novel insights into the taste and flavor quality of dry-cured hams of different origins due to fermentation All sequence data have been deposited in the NCBI Sequence Read Archive under accession code PRJNA728825. And Ethyl tetradecanoate (cas: 124-06-1) was used in the research process.

Ethyl tetradecanoate(cas: 124-06-1) is a natural product found in Psidium guajava, Litchi chinensis, and other organisms.Product Details of 124-06-1Ethyl myristate is a long-chain fatty acid ethyl ester resulting from the formal condensation of the carboxy group of myristic acid with the hydroxy group of ethanol.

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

Li, Min;Zhang, Pan;Chen, Changle published 《Light-Controlled Switchable Ring Opening Polymerization》 in 2019. The article was appeared in 《Macromolecules (Washington, DC, United States)》. They have made some progress in their research.Reference of Oxacyclohexadecan-2-one The article mentions the following:

Salicylaldimine Zn(II) complexes bearing azobenzene moieties were prepared and characterized. Isomerization between the trans and cis forms of these complexes was achieved by exposure to light; both isomers were active in ring-opening polymerizations of ε-caprolactone (CL), rac-lactide, trimethylene carbonate, β-oxetanone, δ-valerolactone, cyclopentadecanolide, and 5-methyl-5-propyl-1,3-dioxan-2-one but exhibited different kinetic profiles. A 6-fold reactivity difference was realized for the ring-opening polymerization of CL upon irradiation with light. The light-induced isomerization also led to reactivity discrimination between different monomers in copolymerization reactions. Reversible photoswitching between two catalytically active states provides a strategy for the control of polymerization processes, as well as the compositions of the polymers produced. The experimental procedure involved many compounds, such as Oxacyclohexadecan-2-one (cas: 106-02-5) .

Oxacyclohexadecan-2-one(cas:106-02-5) is a monomer used to make PGA-co-pentadecalactone polymers to be used in the development of directly compressed prolonged release tablets of slightly soluble drugs such as ketoprofen.Reference of Oxacyclohexadecan-2-oneIt may be used for the synthesis of poly(pentadecanolide) (PPDL) by Novozyme 435 catalyzed ring-opening polymerization.

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

Quality Control of 1-Phenylethyl acetateIn 2017, Yu, Wei;Zhou, Minghong;Wang, Tianqi;He, Zidong;Shi, Buyin;Xu, Yang;Huang, Kun published 《”Click Chemistry” Mediated Functional Microporous Organic Nanotube Networks for Heterogeneous Catalysis》. 《Organic Letters》published the findings. The article contains the following contents:

Azide-functionalized microporous organic nanotube networks (MONN) were prepared from graft copolymers of glycidyl methacrylate, DL-lactide, styrene, 4-(chloromethyl)styrene, and an isobutyric acid α-trithiocarbonate by Friedel-Crafts crosslinking with formaldehyde di-Me acetal followed by substitution with NaN₃. 1,3-Dipolar cycloadditions of propargyl-substituted TEMPO and DMAP with the azide-functionalized MONN yielded MONN-bound TEMPO and DMAP. MONN-bound TEMPO and MONN-bound DMAP were recyclable catalysts for the chemoselective oxidation of alcs. to aldehydes and ketones and for the acetylation of alcs. with acetic anhydride to yield acetates, resp.; the TEMPO MONN was recycled ten times with no loss in yield and fourteen times with some (10-15%) decrease in yield.1-Phenylethyl acetate (cas: 93-92-5) were involved in the experimental procedure.

1-Phenylethyl acetate(cas:93-92-5) is a carboxylic ester. Quality Control of 1-Phenylethyl acetate It may be prepared by acetylation of methyl phenyl carbinol; from 1-bromoethylbenzene and silver acetate in acetic acid; from benzaldehyde by reacting with magnesium methyl bromide and subsequent acetylation.

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