Tag: 200-300

Synthesis of dl-muscone by acyloin cyclization was written by Yao, Qian-Yuan;Chen, Xue;Gao, Zhao-Yun;Zhao, Wen-Zhi. And the article was included in Huaxue Xuebao in 1980.Application of 3903-40-0 This article mentions the following:

dl-Muscone (I) was prepared in 9 steps from cyclohexanone and NCCH₂CO₂Et by acyloin cyclization of di-Me β-methylpentadecanedioate, which was prepared by anodic coupling of HO₂C(CH₂)₁₂CO₂Me with HO₂CCH₂CHMeCH₂CO₂Me. I was separated from its isomer II by silica gel column chromatog. The I:II ratio in the product was 7:3. In the experiment, the researchers used many compounds, for example, 12-Methoxy-12-oxododecanoic acid (cas: 3903-40-0Application of 3903-40-0).

12-Methoxy-12-oxododecanoic acid (cas: 3903-40-0) 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. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.Application of 3903-40-0

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

Pyridine-Functionalized Luminescent Organoboron Quinolate Block Copolymers as Versatile Building Blocks for Assembled Nanostructures was written by Cheng, Fei;Bonder, Edward M.;Salem, Shadwa;Jakle, Frieder. And the article was included in Macromolecules (Washington, DC, United States) in 2013.Recommanded Product: Benzyl benzodithioate This article mentions the following:

Novel luminescent boron quinolate block copolymers with pyridine functionalities were prepared via RAFT polymerization and employed as building blocks for assembled nanostructures. In selective solvents, the block copolymers self-assembled into vesicles, spherical and extended branched aggregates. Quaternization reactions were performed to modify the solubility of the block copolymers and to prepare a crosslinked polymeric gel. As polymeric Lewis bases, the pyridine-functionalized block copolymers are able to form supramol. complexes with metal ions and Lewis acids. Coordination to ZnCl₂ in chloroform led to spherical micelles or larger aggregates. The supramol. coassembly of PS-b-PBQPy-1 and zinc meso-tetraphenylporphyrin (ZnTPP) in cyclohexane as a selective solvent for PS resulted in extended branched structures with controllable emission properties. Energy transfer from the boron chromophores to the ZnTPP moieties was observed in these supramol. complexes. In the experiment, the researchers used many compounds, for example, Benzyl benzodithioate (cas: 27249-90-7Recommanded Product: Benzyl benzodithioate).

Benzyl benzodithioate (cas: 27249-90-7) 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. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.Recommanded Product: Benzyl benzodithioate

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

A novel use of Boc-Oxyma as reagent for tert-butoxycarbonylation of amines and amino acid esters was written by Robert, Alice R.;Kumar, Ganta Ravi;Kumar, Thoota Sandeep;Maddila, Suresh;Jonnalagadda, Sreekantha B.. And the article was included in Chemical Data Collections in 2020.HPLC of Formula: 185619-66-3 This article mentions the following:

A facile and suitable approach has been improved to protect various amines, including sterically hindered amino acid esters, as their carbamates using Boc-Oxyma in the presence of triethylamine as a base catalyst in neat or solvent medium at room temperature A significant advantage of this protocol is easy handling, short reaction times, simple workup process, TEA as solvent plus catalyst under mild conditions, avoiding column chromatog. for purification technique and excellent product yields. In the experiment, the researchers used many compounds, for example, tert-Butyl (3-ethynylphenyl)carbamate (cas: 185619-66-3HPLC of Formula: 185619-66-3).

tert-Butyl (3-ethynylphenyl)carbamate (cas: 185619-66-3) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.HPLC of Formula: 185619-66-3

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

Organoboron star polymers via arm-first RAFT polymerization: synthesis, luminescent behavior, and aqueous self-assembly was written by Cheng, Fei;Bonder, Edward M.;Doshi, Ami;Jaekle, Frieder. And the article was included in Polymer Chemistry in 2012.Product Details of 27249-90-7 This article mentions the following:

The first examples of organoboron star polymers were prepared by arm-first RAFT polymerization using a novel luminescent organoboron crosslinker in combination with PS, PNIPAM, P4VP, and PNIPAM-b-PS as linear polymer precursors. Well-defined star architectures with a luminescent core were successfully obtained as confirmed by GPC-MALLS, NMR, DLS, and TEM anal. The PNIPAM-b-PS stars are amphiphilic and undergo self-assembly in water with formation of super-aggregates that exhibit strong green fluorescence. The P4VP stars lend themselves to further functionalization at the periphery. In the experiment, the researchers used many compounds, for example, Benzyl benzodithioate (cas: 27249-90-7Product Details of 27249-90-7).

Benzyl benzodithioate (cas: 27249-90-7) 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.Product Details of 27249-90-7

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

Untargeted foodomics reveals molecular mechanism of magnetic field effect on Feng-flavor Baijiu ageing was written by Jia, Wei;Fan, Zibian;Du, An;Shi, Lin. And the article was included in Food Research International in 2021.Computed Properties of C12H22O4 This article mentions the following:

Ageing is a time-consuming step in Baijiu manufacture, stimulating an urgent requirement of optimization. Variation of artificial aged Feng-flavor Baijiu by inhomogeneous alternating magnetic field was investigated through quant. foodomics combined with confirmed ultra high performance liquid chromatog. quadrupole-orbitaltrap high resolution mass spectrometry (UHPLC-Q-Orbitrap). A total of 153 substances were identified with significant variables (p < 0.05, VIP > 1) and 16 metabolic pathways related to Feng-flavor Baijiu functions were obtained. The method showed good accuracy with recovery values between 80.4% and 117.4% and precision lower than 9.8% for all characteristic substances. Limit of detection (LOD) was ranging between 1.6 and 10.0 μg/L with R² â‰?0.99. Factor anal. demonstrated that aging degree of magnetized samples increased with rise of magnetic field intensity and the maximum effect was equivalent to 12.81 years of natural ageing. The results of stoichiometric anal. revealed that regulation of magnetic field on proportion in Baijiu was mainly performed through entropy and the hydrogen bond strength of Baijiu mols. Sensory evaluation illustrated that score of Baijiu samples reached the highest at 150 mT, demonstrating that magnetic field treatment can be considered as an optimized aging means for Feng-flavor Baijiu. In the experiment, the researchers used many compounds, for example, Dimethyl decanedioate (cas: 106-79-6Computed Properties of C12H22O4).

Dimethyl decanedioate (cas: 106-79-6) 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. 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.Computed Properties of C12H22O4

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

Iodonium Ylides as Carbene Precursors in Rh(III)-Catalyzed C-H Activation was written by Jiang, Yuqin;Li, Pengfei;Zhao, Jie;Liu, Bingxian;Li, Xingwei. And the article was included in Organic Letters in 2020.Formula: C11H20O4 This article mentions the following:

The rhodium(III)-catalyzed coupling of C-H substrates with iodonium ylides has been realized for the efficient synthesis of diverse cyclic skeletons, where the iodonium ylides have been identified as efficient and outstanding carbene precursors. The reaction systems are applicable to both sp² and sp³ C-H substrates under mild and redox-neutral conditions. The catalyst loading can be as low as 0.5 mol % in a gram-scale reaction. Representative products exhibit cytotoxicity toward human cancer cells at nanomolar levels. In the experiment, the researchers used many compounds, for example, Diethyl isobutylmalonate (cas: 10203-58-4Formula: C11H20O4).

Diethyl isobutylmalonate (cas: 10203-58-4) 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. 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.Formula: C11H20O4

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

A study of a block copolymer synthesized by RAFT polymerization containing carbazole groups and a europium complex was written by Wang, W.;Ling, Q. D.;Lin, M. J.;Chen, Q. H.. And the article was included in Materials Science-Poland in 2011.Quality Control of Benzyl benzodithioate This article mentions the following:

A series of block copolymers containing carbazole groups were synthesized via reversible addition fragmentation chain transfer (RAFT) polymerization of styrene monomer. Then the block copolymer containing carbazole groups and europium complex was synthesized by coordination. The block copolymers were characterized by elemental analyses, FT-IR, ¹HNMR, GPC, Uv-vis absorption, fluorescence spectroscopy and cyclic voltammetry. The GPC result shows that the block copolymers have narrow polydispersity and controlled mol. weights (MWs). The fluorescence spectroscopy of the block copolymer containing carbazole groups and europium complex shows red emission assigned to f-f transitions of europium ions in solid state. In addition, the presence of europium complex in the block copolymer was further evidenced by fluorescence characteristic of europium ions. The CV data reveals that in the block copolymer containing carbazole groups and the europium complex a balance can be achieved between electron currents and the electron-hole currents. Thus, the copolymer is a potentially useful candidate for fabricating memory or light emitting devices. In the experiment, the researchers used many compounds, for example, Benzyl benzodithioate (cas: 27249-90-7Quality Control of Benzyl benzodithioate).

Benzyl benzodithioate (cas: 27249-90-7) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. 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.Quality Control of Benzyl benzodithioate

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

Synthesis of N-[3-alkoxy-4-(hydroxy-, alkoxy-, or acyloxy)-benzylidene- and -phenylmethyl]biphenyl-2-amines was written by Dikusar, E. A.;Potkin, V. I.;Zhukovskaya, N. A.;Kozlov, N. G.;Yuvchenko, A. P.. And the article was included in Russian Journal of General Chemistry in 2009.Application of 20665-85-4 This article mentions the following:

Condensation of aldehydes of the vanillin series (vanillin, vanillal, and ethers and esters derived therefrom) with biphenyl-2-amine in anhydrous methanol gave the corresponding Schiff bases which were reduced with Na[BH(OAc)₃] in benzene under mild conditions to obtain N-[3-alkoxy-4-(hydroxy-, alkoxy-, or acyloxy)phenylmethyl]biphenyl-2-amines I (R¹ = Me, Et; R² = alkyl, acyl). In the experiment, the researchers used many compounds, for example, 4-Formyl-2-methoxyphenyl isobutyrate (cas: 20665-85-4Application 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. 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.Application of 20665-85-4

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

The use of 13-methyltetradecanoic acid as an indicator of adipose tissue turnover was written by Klein, Roger A.;Halliday, David;Pittet, Philippe G.. And the article was included in Lipids in 1980.Recommanded Product: 3903-40-0 This article mentions the following:

13-Methyltetradecanoic acid (13-MTD) can be used as a structurally labeled marker for investigating the mobility of fatty acyl chains in adipose tissue in the rat. The presence of an ω-1-Me group allows easy quantitation by gas chromatog. and permits an assessment of any oxidation and chain elongation reactions with reincorporation of the label into the adipose tissue, since the iso-acyl chain is well resolved from odd or even-numbered homologous fatty acids with straight chains. The kinetics of uptake and loss of the structural label were different for samples taken from sites in the post abdominal, mesenteric, perirenal, pericardiac, and s.c. adipose tissue, as well as from the epididymal fat pads. Preliminary results in man confirm that the method is applicable to human clin. studies and that 13-MTD kinetics differ from adipose tissue taken from 3 different s.c. sites on the waist, arm, and thigh. In the experiment, the researchers used many compounds, for example, 12-Methoxy-12-oxododecanoic acid (cas: 3903-40-0Recommanded Product: 3903-40-0).

12-Methoxy-12-oxododecanoic acid (cas: 3903-40-0) 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. 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: 3903-40-0

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

Transesterifications over titanosilicate molecular sieves was written by Srinivas, D.;Srivastava, R.;Ratnasamy, P.. And the article was included in Catalysis Today in 2004.Quality Control of malonic acid dibutyl ester This article mentions the following:

Titanosilicate mol. sieves (TS-1, Ti-MCM-41 and amorphous TiO₂-SiO₂) catalyze transesterification reactions. Acidity measurements (pyridine adsorption-IR and NH₃-TPD) reveal the presence of only weak Lewis acid sites. Catalytic activity parallels the acid strength and increases in the order: TS-1<Ti-MCM-41<amorphous TiO₂-SiO₂. TS-1 efficiently catalyzes the transesterification of only linear esters (Et acetoacetate and di-Et malonate), but fails for cyclic esters like propylene carbonate. Ti-MCM-41 and amorphous TiO₂-SiO₂ are superior for the latter. The catalysts could be recycled without any loss in activity/selectivity. In the experiment, the researchers used many compounds, for example, malonic acid dibutyl ester (cas: 1190-39-2Quality Control of malonic acid dibutyl ester).

malonic acid dibutyl ester (cas: 1190-39-2) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. 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.Quality Control of malonic acid dibutyl ester

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