Category: esters-buliding-blocks

The effect of side chains on the performance of solar cells fabricated from poly[2-methoxy-5-(2′-ethylhexoxy)-1,4-phenylene vinylene] and C₆₀ dicarboxylate was written by Zheng, Liping;Zhou, Qingmei;Deng, Xianyu;Wang, Fei;Ning, Bin;Guo, Zhi-Xin;Yu, Gang;Cao, Yong. And the article was included in Thin Solid Films in 2005.Recommanded Product: malonic acid dibutyl ester This article mentions the following:

This paper presents the synthesis of several new C₆₀ dicarboxylate esters. Blends with poly[2-methoxy-5-(2′-ethylhexoxy)-1,4-phenylene vinylene] were fabricated into polymer solar cells and the photovoltaic properties were tested. Effects of the substitution group attached to C₆₀ core on the photovoltaic properties were studied. Energy conversion efficiency increased at 1st, and then decreased with increasing size of substitution group. Also group polarity plays an important role in the performance of polymer photovoltaic devices. In the experiment, the researchers used many compounds, for example, malonic acid dibutyl ester (cas: 1190-39-2Recommanded Product: malonic acid dibutyl ester).

malonic acid dibutyl ester (cas: 1190-39-2) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Recommanded Product: malonic acid dibutyl ester

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

Asymmetric binding of symmetric guests in a water-soluble cavitand was written by Yu, Yang;Zhang, Kang-da;Petsalakis, Ioannis D.;Theodorakopoulos, Giannoula;Rebek, Julius Jr.. And the article was included in Supramolecular Chemistry in 2018.HPLC of Formula: 3903-40-0 This article mentions the following:

Binding of long aliphatic chains in water-soluble container compounds is driven by the hydrophobic effect: the CH2 groups of the guests are buried from water and solvate the inner aromatic surface of the host. The hydrophobic forces and the CH-π attractions are often sufficient to contort the guests into otherwise unfavorable shapes. Here we show that alkanes, α,ω-diols, α,ω-diacids and their Me esters assume folded, J-shaped conformations in a water-soluble cavitand. The environment of the guest’s ends interconvert rapidly on the NMR timescale through yo-yo like motions. The applications of water-soluble cavitands to reaction processes are discussed in the context of moving vs. fixed guest ends. In the experiment, the researchers used many compounds, for example, 12-Methoxy-12-oxododecanoic acid (cas: 3903-40-0HPLC of Formula: 3903-40-0).

12-Methoxy-12-oxododecanoic acid (cas: 3903-40-0) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. HPLC of Formula: 3903-40-0

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

Flavor components in tobacco capsules identified through non-targeted quantitative analysis was written by Lim, Hyun-Hee;Choi, Kyeong-Yun;Shin, Ho-Sang. And the article was included in Journal of Mass Spectrometry in 2022.Related Products of 706-14-9 This article mentions the following:

Tobacco flavors increase the attractiveness of a tobacco brand and ultimately promote addiction. Information about what flavor and how much flavor is in flavor capsules can provide an effective way to regulate tobacco flavor. In this study, 128 flavor chems. were identified and quantified by gas chromatog.-mass spectrometry using libraries and authentic standards Validation of the developed method was performed for interference, detection limits, calibration curves, accuracy, and precision. Menthol was the main ingredient in all capsules, and the carcinogenic pulegone was detected. Detected menthofuran, benzyl alc., geraniol, and eugenol cause toxic or severe irritation, and detected lactones can increase nicotine addiction by inhibiting nicotine metabolism in smokers. Margin of exposures for carcinogenic pulegone and non-carcinogenic menthol were well below safety thresholds, indicating a significant risk of inhalation exposure. It is desirable to prohibit the use of flavor capsules in consideration of human risk. In the experiment, the researchers used many compounds, for example, 5-Hexyldihydrofuran-2(3H)-one (cas: 706-14-9Related Products of 706-14-9).

5-Hexyldihydrofuran-2(3H)-one (cas: 706-14-9) belongs to esters. Esters 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. Polyesters are important plastics, with monomers linked by ester moieties. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.Related Products of 706-14-9

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

Analysis and reconstitution of characteristic aromas in Tie Guanyin tea based on sensory-oriented separation and its application in cigarette flavoring was written by Cao, Xiaoliang;Zhang, Feng;Chai, Guobi;Liu, Jiazeng;Hong, Zucan;Zhou, Peichen;Sun, Shihao;Hu, Jun;Mao, Zhongyi;Ji, Lingbo;Fu, Yingjie;Xi, Hui. And the article was included in Zhongguo Yancao Xuebao in 2021.Application In Synthesis of 5-Hexyldihydrofuran-2(3H)-one This article mentions the following:

[Objective] This study aims to establish a method of natural flavor aroma reconstruction and style enhancement and applied it to cigarette flavoring. [Methods] With Tie Guanyin tea extracts as the object, characteristic aroma groups of Tie Guanyin tea were collected by sensory-oriented gel chromatog. separation Qual. and quant. anal. was conducted by HS-SPME combined with GC/MS anal. The olfactory thresholds of the 41 aroma components in ethanol were determined by three-alternative forcedchoice method, and their odor activity values (OAVs) were calculated on the basis of their mass fraction. On this basis, their contributions to the aroma of tea were estimated Organoleptic evaluation of the key aroma components based on OAV was verified by recombining reconstitution of the key aroma components in tea extracts, comparative evaluation based on aroma profile method and enhancement of characteristic aromas. [Results] 1) 117 streams were collected by sensory-oriented Gel chromatog. separation, in which 28 characteristic aroma streams of Tie Guanyin tea were separated and enriched. 2) 41 characteristic aroma components in Tie Guanyin tea extract were identified by screening, among which 22 aroma components, such as linalool, nerolidol, phenethyl alc., geraniol, citral, indole, Me jasmonate, and Et caproate, contribute the most to the sensory effects. 3) The aroma profile of the recombinant of key aroma components was basically consistent with that of Tie Guanyin tea extracts, so it could reproduce the aroma characteristics style of tea better. 4) The combination of tea aroma recombinants and tea extracts could enhance the tea flavor in cigarettes, enhance the floral scent, delicate fragrance, fruity fragrance significantly, increase the aroma intensity significantly and improve the smoking quality of cigarettes. In the experiment, the researchers used many compounds, for example, 5-Hexyldihydrofuran-2(3H)-one (cas: 706-14-9Application In Synthesis of 5-Hexyldihydrofuran-2(3H)-one).

5-Hexyldihydrofuran-2(3H)-one (cas: 706-14-9) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Application In Synthesis of 5-Hexyldihydrofuran-2(3H)-one

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

Hit to Lead Account of the Discovery of Bisbenzamide and Related Ureidobenzamide Inhibitors of Rho Kinase was written by Morwick, Tina;Buttner, Frank H.;Cywin, Charles L.;Dahmann, Georg;Hickey, Eugene;Jakes, Scott;Kaplita, Paul;Kashem, Mohammed A.;Kerr, Steven;Kugler, Stanley;Mao, Wang;Marshall, Daniel;Paw, Zofia;Shih, Cheng-Kon;Wu, Frank;Young, Erick. And the article was included in Journal of Medicinal Chemistry in 2010.Category: esters-buliding-blocks This article mentions the following:

A highly selective series of bisbenzamide inhibitors of Rho-associated coiled-coil forming protein kinase (ROCK) and a related ureidobenzamide series, both identified by high throughput screening (HTS), are described. Details of the hit validation and lead generation process, including structure-activity relationship (SAR) studies, a selectivity assessment, target-independent profiling (TIP) results, and an anal. of functional activity using a rat aortic ring assay are discussed. In the experiment, the researchers used many compounds, for example, 3-Cyanophenylisocyanate (cas: 16413-26-6Category: esters-buliding-blocks).

3-Cyanophenylisocyanate (cas: 16413-26-6) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Category: esters-buliding-blocks

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

2-[3-Alkoxy-4-(hydroxy, alkoxy, acyloxy)phenyl]-2,3-dihydro-1H-benzimidazoles on the basis of vanillin and vanillal derivatives was written by Dikusar, E. A.;Kozlov, N. G.;Potkin, V. I.. And the article was included in Russian Journal of General Chemistry in 2007.Product Details of 20665-85-4 This article mentions the following:

Previously unknown 2-[3-alkoxy-4-(hydroxy-, alkoxy-, and acyloxy)phenyl]-2,3-dihydro-1H-benzimidazoles were prepared by the reaction of aldehydes of the vanillin series and their ethers and esters with 1,2-phenylenediamine in absolute MeOH. In the experiment, the researchers used many compounds, for example, 4-Formyl-2-methoxyphenyl isobutyrate (cas: 20665-85-4Product Details of 20665-85-4).

4-Formyl-2-methoxyphenyl isobutyrate (cas: 20665-85-4) belongs to esters. Esters 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. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Product Details of 20665-85-4

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

Changes in functional components and biological activity of Lycium barbarum after fermentation with Kombucha SCOBY was written by Zhang, Shuo;Tang, Yuxin;Chen, Julong. And the article was included in Journal of Food Processing and Preservation in 2022.Related Products of 706-14-9 This article mentions the following:

Kombucha, fermented via symbiotic colony of bacteria and yeast (SCOBY) with black tea, is applied as a nova microbial method for processing traditional Chinese medicine (TCM). In this study, Lycium barbarum was used as the substrate combined with Kombucha SCOBY to enhance its antioxidant activities and flavor composition The result indicated that the antioxidant activities of L. barbarum fermentation broth (LBF) was increased and 16.51% higher compared to the infusion. Besides, the inhibition zone of LBF on the 10th day against Escherichia coli and Staphylococcus aureus reached the maximum of 18.80 and 21.85 mm. Three typical L. barbarum polysaccharides, including LBP1, LBP2, and LBP3, were extracted and their compositions were identified. Among them, the DPPH scavenging rate and reducing power of LBP2 were 67.36% and 0.612 which were both higher than others. Furthermore, SOD enzyme and cellulase activity of LBF on 10th day were improved by 92.41% and 2.27 times, resp. Thirty-one aroma compounds were determined in Lycium barbarum Kombucha ferment via GC-MS. The strongest flavor of the LBF was sourness while the weakest flavor was saltiness which was analyzed through the electronic tongue. Our research provides a theor. basis for the development of functional L. barbarum Kombucha product and explores the application of Kombucha SCOBY in processing TCM. In the experiment, the researchers used many compounds, for example, 5-Hexyldihydrofuran-2(3H)-one (cas: 706-14-9Related Products of 706-14-9).

5-Hexyldihydrofuran-2(3H)-one (cas: 706-14-9) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Related Products of 706-14-9

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

Preparative synthesis of {[4-hydroxy(alkyloyloxy, aryloyloxy)-3-methoxy(ethoxy)phenyl]methylene}(4-carboxyphenyl)amines was written by Dikusar, E. A.;Kozlov, N. G.;Zhukovskaya, N. A.;Potkin, V. I.;Ogorodnikova, M. M.;Zelenkovskii, V. M.. And the article was included in Russian Journal of Organic Chemistry in 2006.Recommanded Product: 4-Formyl-2-methoxyphenyl isobutyrate This article mentions the following:

By reactions of vanillin, vanillal, and their esters with 4-aminobenzoic acid in methanol formerly unknown E-isomers of azomethines (Schiff bases) were prepared In the experiment, the researchers used many compounds, for example, 4-Formyl-2-methoxyphenyl isobutyrate (cas: 20665-85-4Recommanded Product: 4-Formyl-2-methoxyphenyl isobutyrate).

4-Formyl-2-methoxyphenyl isobutyrate (cas: 20665-85-4) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Recommanded Product: 4-Formyl-2-methoxyphenyl isobutyrate

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

Discovery of isoxazolinone antibacterial agents. Nitrogen as a replacement for the stereogenic center found in oxazolidinone antibacterials was written by Snyder, Lawrence B.;Meng, Zhaoxing;Mate, Robert;D’Andrea, Stanley V.;Marinier, Anne;Quesnelle, Claude A.;Gill, Patrice;DenBleyker, Kenneth L.;Fung-Tomc, Joan C.;Frosco, MaryBeth;Martel, Alain;Barrett, John F.;Bronson, Joanne J.. And the article was included in Bioorganic & Medicinal Chemistry Letters in 2004.HPLC of Formula: 2327-45-9 This article mentions the following:

A series of potential antimicrobial derivatives possessing bioisosteric replacements for the central oxazolidinone ring found in oxazolidinone antibacterials have been prepared The design concept involved replacement of the requisite sp³-hybridized stereogenic center found at the 5-position of the oxazolidinone with a nitrogen atom. The synthesis and antibacterial activity of three such ring systems, the benzisoxazolinones, e.g., I, pyrroles, e.g., II, and isoxazolinones, e.g., III, is described. In the experiment, the researchers used many compounds, for example, Methyl 5-methoxy-2-nitrobenzoate (cas: 2327-45-9HPLC of Formula: 2327-45-9).

Methyl 5-methoxy-2-nitrobenzoate (cas: 2327-45-9) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.HPLC of Formula: 2327-45-9

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

Design of novel malonates as internal donors for MgCl₂-supported TiCl₄ type polypropylene catalysts and their mechanistic aspects, Part 1 was written by Tanase, Shohjiroh;Katayama, Kiyokazu;Yabunouchi, Nobuhiro;Sadashima, Takanori;Tomotsu, Norio;Ishihara, Nobuhide. And the article was included in Journal of Molecular Catalysis A: Chemical in 2007.Recommanded Product: malonic acid dibutyl ester This article mentions the following:

Various malonate compounds (R¹R²C(COOBu)₂) with different substituents (R¹, R²) were systematically synthesized and investigated for use as an internal donor (ID) in combination with a MgCl₂-supported TiCl₄ type catalyst, a triethylaluminum (TEA) co-catalyst and an alkoxysilane external donor (ED) for application in propylene polymerization The catalytic activity and isotacticity of polypropylene (PP) greatly depended on not only the oxygen electron d. of the ED, but also on the mol. volume of the ID. Furthermore, the mechanism of the active site formation was discussed with respect to the composition of the catalyst treated with TEA and ED, and with respect to the temperature rising elution fractionation (TREF) results of PP and so on. It was presumed that the desorption of malonates near Ti species from MgCl₂ caused the generation of atactic PP sites, and the decrease of the isotacticity of PP. In the experiment, the researchers used many compounds, for example, malonic acid dibutyl ester (cas: 1190-39-2Recommanded Product: malonic acid dibutyl ester).

malonic acid dibutyl ester (cas: 1190-39-2) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Recommanded Product: malonic acid dibutyl ester

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