Tag: 200-300

Preparation of Azido Polycarbonates via Bulk Polymerization of Halogenated Diols was written by St-Charles, Jean-Christophe;Dubois, Charles. And the article was included in Propellants, Explosives, Pyrotechnics in 2020.Reference of 102-09-0 The following contents are mentioned in the article:

Azido polymers find use as energetic binders in a variety of composite explosive and propellant applications, but few azido polyesters have previously been reported: a method is introduced for the preparation of two azido polycarbonates, poly(2,2′-bisazidomethyl-1,3-Pr carbonate) and poly(3-azido-1,2-Pr carbonate), possible binder candidates for energetics applications. The preparation method for these polymers involves a two-step synthesis starting from the bulk polymerization of the com. sourced diols with di-Ph carbonate in the presence of lanthanum (III) acetylacetonate as a neutral catalyst, and subsequent azidation in cyclohexanone. The phys. and thermal characteristics of each are reported, indicating properties similar to other azido-polymers. The thermal and mech. properties of cured azido polyester resin mixtures are the subject of ongoing research. This study involved multiple reactions and reactants, such as Diphenyl carbonate (cas: 102-09-0Reference of 102-09-0).

Diphenyl carbonate (cas: 102-09-0) 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. 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.Reference of 102-09-0

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

Regioselectivity and deuterium isotope effects in geraniol hydroxylation by the cytochrome P-450 monooxygenase from Catharanthus roseus (L.) G. Don was written by Fretz, Heinz;Woggon, Wolf Dietrich. And the article was included in Helvetica Chimica Acta in 1986.Computed Properties of C12H18O3 The following contents are mentioned in the article:

The hydroxylation of geraniol (I) by cytochrome P 450 from the subtropical plant C. roseus was optimized to give 8-hydroxygeraniol as the single product in 35% yield. Incubations of different ¹³C- and ²H-labeled geraniols revealed that H abstraction was completely regioselective in favor of the CH₃ group trans to the chain at C(6) of I. An intramol. deuterium isotope effect k_H/k_D of 8.0 was determined, suggesting that H abstraction is one of the major rate-contributing steps; however, the intramol. isotope effect was surprisingly inverse at low conversion, k_H/k_D = 0.50, indicating the existence of rate-contributing steps preceding the 1st irreversible, isotope-sensitive reaction in the sequence. This study involved multiple reactions and reactants, such as (2E,6E)-3,7-Dimethyl-8-oxoocta-2,6-dien-1-yl acetate (cas: 37905-02-5Computed Properties of C12H18O3).

(2E,6E)-3,7-Dimethyl-8-oxoocta-2,6-dien-1-yl acetate (cas: 37905-02-5) 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. 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.Computed Properties of C12H18O3

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

Targeting KRAS Mutant Cancers via Combination Treatment: Discovery of a 5-Fluoro-4-(3H)-quinazolinone Aryl Urea pan-RAF Kinase Inhibitor was written by Huestis, Malcolm P.;Dela Cruz, Darlene;DiPasquale, Antonio G.;Durk, Matthew R.;Eigenbrot, Charles;Gibbons, Paul;Gobbi, Alberto;Hunsaker, Thomas L.;La, Hank;Leung, Dennis H.;Liu, Wendy;Malek, Shiva;Merchant, Mark;Moffat, John G.;Muli, Christine S.;Orr, Christine J.;Parr, Brendan T.;Shanahan, Frances;Sneeringer, Christopher J.;Wang, Weiru;Yen, Ivana;Yin, Jianping;Siu, Michael;Rudolph, Joachim. And the article was included in Journal of Medicinal Chemistry in 2021.Application In Synthesis of Diphenyl carbonate The following contents are mentioned in the article:

Optimization of a series of aryl urea RAF inhibitors led to the identification of type II pan-RAF inhibitor GNE-0749 (7)(I), which features a fluoroquinazolinone hinge-binding motif. By minimizing reliance on common polar hinge contacts, this hinge binder allows for a greater contribution of RAF-specific residue interactions, resulting in exquisite kinase selectivity. Strategic substitution of fluorine at the C5 position efficiently masked the adjacent polar NH functionality and increased solubility by impeding a solid-state conformation associated with stronger crystal packing of the mol. The resulting improvements in permeability and solubility enabled oral dosing of 7. In vivo evaluation of 7 in combination with the MEK inhibitor cobimetinib demonstrated synergistic pathway inhibition and significant tumor growth inhibition in a KRAS mutant xenograft mouse model. This study involved multiple reactions and reactants, such as Diphenyl carbonate (cas: 102-09-0Application In Synthesis of Diphenyl carbonate).

Diphenyl carbonate (cas: 102-09-0) 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. 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 In Synthesis of Diphenyl carbonate

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

Analysis of aroma components in apple wine and vinegar was written by Song, Jing;Chen, Ping;Wang, Yuying;Zhang, Yugang;Dai, Hongyi. And the article was included in Zhongguo Niangzao in 2013.Category: esters-buliding-blocks The following contents are mentioned in the article:

The aroma compounds in apple wine and vinegar of ’95-54′ and ’95-117′ were analyzed by GC-MS. There were 48 kinds of aromatic compositions separated from ’95-54′ apple wine (90.36% of the total peak areas) and 42 kinds of aromatic compositions separated from ’95-54′ apple vinegar (98.66% of the total peak areas). There were 43 kinds of aromatic compositions separated from ’95-117′ apple wine (86.59% of the total peak areas) and 49 kinds of aromatic compositions separated from ’95-117′ apple vinegar (99.37% of the total peak areas). These aromatic compounds included alcs., acids, esters, aldehydes, ketones, acetal and terpenes. There were commonalities and differences of the aromatic components between the wines or vinegars from two apple varieties. The differences of the aromatic components between apple wine and vinegar were conformed to the basic features of wine and vinegar. This study involved multiple reactions and reactants, such as 2-Ethylhexyl benzoate (cas: 5444-75-7Category: esters-buliding-blocks).

2-Ethylhexyl benzoate (cas: 5444-75-7) 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. 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.Category: esters-buliding-blocks

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

Synthesis of a New Benzoate Plasticizer for Polyvinyl Chloride Based on a 2-Ethylhexanol By-Product was written by Maydanova, I. O.;Lakeev, S. N.;Ishalina, O. V.;Nikitina, A. P.. And the article was included in Russian Journal of Applied Chemistry in 2020.Recommanded Product: 5444-75-7 The following contents are mentioned in the article:

When 2-ethylhexyl alc. is produced by the propylene oxo synthesis, 2-ethylhexanol distillation residue (EDR), a large-tonnage byproduct, is formed. Monitoring of various batches of this byproduct produced by LLC “Gazprom Neftekhim Salavat” showed demonstrated in addition to the main substance 2-ethylhexanol, 2,4-diethyl-1,3-octanediol is present in a significant amount (15-25%). The purpose of the work was to study the possibility of producing a benzoate plasticizer based on a fraction isolated from EDR and enriched with 2,4-diethyl-1,3-octanediol. As a result of research, a product was synthesized containing 76.2% of benzoic acid esters, including 53.1% of mixture of 2,4-diethyl-1,3-octanediol monobenzoates and monoalcs. C₈, C₁₂, and 23.1% of 2,4-diethyl-1,3-octanediol dibenzoate. The product exhibited good compatibility with polyvinyl chloride and plasticizing properties. This study involved multiple reactions and reactants, such as 2-Ethylhexyl benzoate (cas: 5444-75-7Recommanded Product: 5444-75-7).

2-Ethylhexyl benzoate (cas: 5444-75-7) 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. 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.Recommanded Product: 5444-75-7

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

Investigation of masked N-acyl-N-isocyanates: Support for oxadiazolones as blocked N-isocyanate precursors was written by Gagne-Monfette, William;Vincent-Rocan, Jean-Francois;Lutes, Owen C.;O’Keefe, Genevieve F.;Jeanneret, Alexandria D. M.;Blanger, Claire;Ivanovich, Ryan A.;Beauchemin, Andre M.. And the article was included in Chemistry – A European Journal in 2021.Category: esters-buliding-blocks The following contents are mentioned in the article:

In contrast to carbon-substituted isocyanates that are common building blocks, N-substituted isocyanates remain underdeveloped and reports on their N-acyl derivatives (i. e. amido-isocyanates) are exceedingly rare. Herein, amido-isocyanates were investigated in the context of syntheses of aza-tripeptide and hydantoins subunits starting from simple bench-stable precursors. A key finding is that the amido-isocyanate formed in situ cyclized to yield an oxadiazolone, and that under suitable reaction conditions this heterocycle is a traceless blocked (masked) N-isocyanate. Using organic bases as catalysts and upon heating, oxadiazolone formation is observed, and various nucleophiles to provide the desired aza-dipeptides or hydantoins in moderate to high yields. Further support for an amido-isocyanate intermediate was obtained using carboxylic acids as nucleophiles, affording N-acylhydrazide products. This study involved multiple reactions and reactants, such as Diphenyl carbonate (cas: 102-09-0Category: esters-buliding-blocks).

Diphenyl carbonate (cas: 102-09-0) 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. Polyesters are important plastics, with monomers linked by ester moieties. 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.Category: esters-buliding-blocks

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

Characterization of response frequency for the pressure-sensitive paint based on fluorine-containing polymer matrixes using oscillating sound wave technique was written by Shao, Yun;Chen, Liusheng;Liao, Qi;Jiang, Heng;Liu, Zhitian;Jin, Xigao;Gao, Limin. And the article was included in Sensors in 2020.Computed Properties of C7H6F6O2 The following contents are mentioned in the article:

Five kinds of new homo-polymer and copolymers of methacrylate containing a fluorine ester group were synthesized and used for the binder of pressure-sensitive paint (PSP)to ensure the good compatibility between luminophore (Pt(II) meso-tetra (pentafluorophenyl) porphine (PtTFPP)) and polymer binder. In the work, we were concerned with how the structure of these polymers containing fluorine, especially the various ester group structure, affects the response frequency of PSP using oscillating sound wave technique. The results showed that the pressure sensitivities (Sp) of these PSP samples containing different polymers, exhibit some difference. The length of ester chain on the methacrylate polymer affects the response frequency of PSP sensor layer composed of the polymer. The longer the chain length of the ester group, the higher the response frequency of the PSP sensor layer quenching by oxygen. This study involved multiple reactions and reactants, such as 1,1,1,3,3,3-Hexafluoroisopropylmethacrylate (cas: 3063-94-3Computed Properties of C7H6F6O2).

1,1,1,3,3,3-Hexafluoroisopropylmethacrylate (cas: 3063-94-3) 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. 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.Computed Properties of C7H6F6O2

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

Nantucket pine tip moth, Rhyacionia frustrana: identification of two sex pheromone components was written by Hill, Ada S.;Berisford, C. Wayne;Brady, U. Eugene;Roelofs, Wendell L.. And the article was included in Journal of Chemical Ecology in 1981.Quality Control of (E)-Dodeca-9,11-dien-1-yl acetate The following contents are mentioned in the article:

Two compounds identified as components of the sex pheromone system of R. frustrana are (E)-9-dodecen-1-yl acetate (I) [35148-19-7] and (E)-9,11-dodecadien-1-yl acetate (II) [50767-78-7], which were found in female gland extracts in the ratio of 96:4, resp. The identifications were based on chem. and instrumental anal., electroantennogram studies, and field trapping tests. The optimum ratio for trapping male R. frustrana was from 95:5 to 97.5:2.5 (I:II), when dispensed from rubber septa at a loading of âˆ?000 μg/lure. In addition to these 2 compounds, evidence was obtained for the presence of dodecan-1-ol [112-53-8] and (E)-9-dodecen-1-ol [35237-62-8] in female tip extracts and in female effluvium, and for dodecan-1-yl acetate [112-66-3] in female tip extracts This study involved multiple reactions and reactants, such as (E)-Dodeca-9,11-dien-1-yl acetate (cas: 50767-78-7Quality Control of (E)-Dodeca-9,11-dien-1-yl acetate).

(E)-Dodeca-9,11-dien-1-yl acetate (cas: 50767-78-7) 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. 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.Quality Control of (E)-Dodeca-9,11-dien-1-yl acetate

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

In situ investigation of formation kinetics of microporous structure in PVDF thin films prepared via thermally-induced phase separation (TIPS): Effects of film thickness and polymer concentration was written by Yang, Bin;Yu, Yang-nan;Pan, Yang;Wang, Shu-qing;Xu, Xiang;Wang, Ying-ying;Qian, Jia-sheng;Xia, Ru;Zhang, Peng;Shi, You;Tu, You-lei. And the article was included in Nano Select in 2021.Application In Synthesis of Diphenyl carbonate The following contents are mentioned in the article:

In this research, series of PVDF microporous films with various polymer concentrations and thickness were prepared through thermally-induced phase separation in air condition with di-Ph carbonate as the diluent. Effects of polymer concentration and film thickness on the formation kinetics of microporous structure of PVDF thin films were in situ investigated via TII technique. The instantaneous heat conduction inside the films during film formation was also evaluated. Two types of parameter models were adopted in order to disclose the time and location dependence of TIPS film solidification kinetics, resp. Hierarchical microstructures, crystallization behavior and thermal properties of the TIPS films were also characterized by SEM, DSC, and TGA, resp. The current study could supply an insight into the fabrication of PVDF microporous films with target microstructure and desirable performance. This study involved multiple reactions and reactants, such as Diphenyl carbonate (cas: 102-09-0Application In Synthesis of Diphenyl carbonate).

Diphenyl carbonate (cas: 102-09-0) 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.Application In Synthesis of Diphenyl carbonate

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

Thermokinetic analysis and product characterization of Medium Density Fiberboard pyrolysis was written by Aslan, Dilan Irmak;Ozogul, Bugce;Ceylan, Selim;Geyikci, Feza. And the article was included in Bioresource Technology in 2018.HPLC of Formula: 5444-75-7 The following contents are mentioned in the article:

This study investigates the pyrolysis of Medium D. Fiberboard (MDF) as a potential waste management solution Thermal behavior of MDF was analyzed via TG/DSC. The primary decomposition step occurred between 190°C and 425°C. Evolved gaseous products over this step were evaluated by a FTIR spectrometer coupled with TGA. Peaks for phenolic, alcs. and aldehydes were detected at the maximum decomposition temperature Py-GC/MS anal. revealed phenols, ketones and cyclic compounds as the primary non-condensable pyrolysis products. The kinetics of pyrolysis were investigated by the widely applied Distributed Activation Energy Model, resulting in an average activation energy and pre-exponential factor of 127.40 kJ mol^-1 and 8.4E+11. The results of this study suggest that pyrolyzing MDF could potentially provide renewable fuels and prevent environmental problems related with MDF disposal. This study involved multiple reactions and reactants, such as 2-Ethylhexyl benzoate (cas: 5444-75-7HPLC of Formula: 5444-75-7).

2-Ethylhexyl benzoate (cas: 5444-75-7) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. 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: 5444-75-7

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