Tag: 200-300

Fatty Acid Derived Renewable Platform Chemicals via Selective Oxidation Processes was written by von Czapiewski, Marc;Rhein, Michael;Meier, Michael A. R.. And the article was included in ACS Sustainable Chemistry & Engineering in 2018.Application of 106-79-6 This article mentions the following:

Highly efficient synthesis processes for the selective catalytic oxidation of unsaturated fatty acid Me esters (FAMEs) are described, leading to valuable renewable platform chems. Here keto-FAMEs derived from Me oleate and Me erucate were synthesized via a cocatalyst-free Wacker oxidation process using a high pressure reactor system. The catalytic system of palladium(II) chloride in dimethylacetamide/water enabled the oxidation of monounsaturated FAMEs in the presence of mol. oxygen as sole reoxidant with reduced amounts of solvent in shorter reaction time compared to previous reports. The high product selectivity is confirmed by two different synthesis approaches and the characterization of thereof derived products using mass spectrometry measurements (GC-MS, ESI-MS-MS). The obtained keto-FAMEs are used in a subsequent Baeyer-Villiger oxidations with m-CPBA, enabling the synthesis of diesters, thus allowing access to various platform chems. (e.g., hydroxy-esters, fatty alcs.). Moreover, an enone derivative, which can be obtained through selective photo peroxidation of Me oleate, is studied in the cocatalyst-free Wacker oxidation process leading to a 1,3-diketone. Addnl., the same enone is used in the Baeyer-Villiger oxidation with Oxone and m-CPBA as oxidant, allowing the highly selective synthesis of a vinyl acetate and an epoxy diester derivative, resp. In the experiment, the researchers used many compounds, for example, Dimethyl decanedioate (cas: 106-79-6Application of 106-79-6).

Dimethyl decanedioate (cas: 106-79-6) 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 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.Application of 106-79-6

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

Difference in chemical composition of supercritical methanolysis products between two lignites was written by Chen, Bo;Wei, Xian-Yong;Zong, Zhi-Min;Yang, Zhu-Sheng;Qing, Yu;Liu, Chang. And the article was included in Applied Energy in 2011.Electric Literature of C12H22O4 This article mentions the following:

Dehydrated Xilinhaote lignite (XL) and Huolinguole lignite (HL) were depolymerized in supercritical methanol at 310 °C and the resulting soluble reaction mixtures were analyzed with GC/MS. The results show that the GC/MS-detectable species can be classified into hydroxybenzenes (HBs), esters, ketones, alkanols, arenes, methoxybenzene, alkanes, alkenes, nitrogen-containing organic compounds, sulfur-containing organic compounds, aldehydes and other compounds However, the difference in the product yield from different coals is significant. The most abundant products are HBs from XL and esters from HL. In the experiment, the researchers used many compounds, for example, Dimethyl decanedioate (cas: 106-79-6Electric Literature of C12H22O4).

Dimethyl decanedioate (cas: 106-79-6) 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. 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.Electric Literature of C12H22O4

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

Preparation of malonic acid and its esters from carbon suboxide was written by Dashkevich, L. B.. And the article was included in Doklady Akademii Nauk SSSR in 1960.Related Products of 1190-39-2 This article mentions the following:

Pyrolysis of Ac₂O solution of di-Et oxaloacetate best at 850-75° gave 45% C₃O₂. This passed into H₂O containing a trace of HCl gave 97% malonic acid. Similar reaction with ROH in the presence of a few drops of HCl gave the following malonates: di-Me, 96%; di-Et, 97%; di-Pr, 94%; di-Bu, 90%; dicyclohexyl, 61%; dibenzyl, 38%; diphenyl, 69%. The reaction was best run at 60-70°. In the experiment, the researchers used many compounds, for example, malonic acid dibutyl ester (cas: 1190-39-2Related Products of 1190-39-2).

malonic acid dibutyl ester (cas: 1190-39-2) 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.Related Products of 1190-39-2

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

A ring-closing metathesis approach for the synthesis of (±)-pregabalin was written by Bobade, Vivek D.;Mhaske, Pravin C.;Vadgaonkar, Kamlesh S.;Shelke, Shivaji H.. And the article was included in Monatshefte fuer Chemie in 2012.Product Details of 10203-58-4 This article mentions the following:

Efficient utilization of a Mannich-type reaction and the ring-closing metathesis (RCM) approach that leads to a convenient synthesis of 3-(aminomethyl)-5-methylhexanoic acid (pregabalin) is described. In the experiment, the researchers used many compounds, for example, Diethyl isobutylmalonate (cas: 10203-58-4Product Details of 10203-58-4).

Diethyl isobutylmalonate (cas: 10203-58-4) 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 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.Product Details of 10203-58-4

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

Synthesis and photophysical characterization of porphyrin, chlorin and bacteriochlorin molecules bearing tethers for surface attachment was written by Muthiah, Chinnasamy;Taniguchi, Masahiko;Kim, Han-Je;Schmidt, Izabela;Kee, Hooi Ling;Holten, Dewey;Bocian, David F.;Lindsey, Jonathan S.. And the article was included in Photochemistry and Photobiology in 2007.Recommanded Product: Dimethyl 5-ethynylisophthalate This article mentions the following:

The ability to tailor synthetic porphyrin, chlorin and bacteriochlorin mols. holds promise for diverse studies in artificial photosynthesis. Toward this goal, the synthesis and photophys. characterization of five tetrapyrrole compounds is described. Each compound bears a surface attachment group. One set contains three meso-substituted porphyrins that differ only in the nature of a surface-binding tether-isophthalic acid, ethynylisophthalic acid or cyanoacrylic acid. The other set includes a porphyrin, chlorin and bacteriochlorin each of which bears an ethynylisophthalic acid tether. The ester derivative of each compound was prepared for solution photophys. characterization studies. The photophys. studies include determination (in toluene or acetonitrile) of the electronic absorption and fluorescence spectra, fluorescence yield and lifetime of the lowest excited singlet state. The excited-state lifetimes range from 1 to 5.6 ns for the five compounds The radiative rate constant for the excited-state decay was estimated from the photophys. data (fluorescence yield and excited-state lifetime) and from Strickler-Berg anal. of the absorption and fluorescence spectra. The synthesis and characterization of the tetrapyrrole compounds underpin their use as sensitizers in mol.-based solar cells. In the experiment, the researchers used many compounds, for example, Dimethyl 5-ethynylisophthalate (cas: 313648-56-5Recommanded Product: Dimethyl 5-ethynylisophthalate).

Dimethyl 5-ethynylisophthalate (cas: 313648-56-5) 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.Recommanded Product: Dimethyl 5-ethynylisophthalate

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

A Unified and Desymmetric Approach to Chiral Tertiary Alkyl Halides was written by Zheng, Yin;Zhang, Suihan;Low, Kam-Hung;Zi, Weiwei;Huang, Zhongxing. And the article was included in Journal of the American Chemical Society in 2022.Application In Synthesis of Diethyl isobutylmalonate This article mentions the following:

A suite of dinuclear zinc catalysts with a prolinol- or pipecolinol-derived tetradentate ligand reductively desymmetrized a large collection of easily available halomalonic esters to α-halo-β-hydroxyesters were reported. These polyfunctionalized tertiary alkyl fluorides, chlorides, and bromides proved to be useful intermediates toward fluorinated drug analogs and polyhalogenated monoterpenes. The facile intramol. epoxidation of the chiral chloride and bromide products was enabled an expeditious access to natural products containing tertiary alc. motifs. In the experiment, the researchers used many compounds, for example, Diethyl isobutylmalonate (cas: 10203-58-4Application In Synthesis of Diethyl isobutylmalonate).

Diethyl isobutylmalonate (cas: 10203-58-4) 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. 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 In Synthesis of Diethyl isobutylmalonate

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

Temperature- and Light-Responsive Polyacrylamides Prepared by a Double Polymer Analogous Reaction of Activated Ester Polymers was written by Jochum, Florian D.;Theato, Patrick. And the article was included in Macromolecules (Washington, DC, United States) in 2009.Recommanded Product: Benzyl benzodithioate This article mentions the following:

Two different series of polyacrylamides containing different amounts of salicylideneaniline moieties have been synthesized via a double polymer analogous reaction of poly(pentafluorophenyl acrylate) (PPFPA). All copolymers were designed to exhibit a lower critical solution temperature (LCST) in aqueous solution, which was dependent on (i) the amount of incorporated chromophoric salicylideneaniline groups and (ii) the isomerization state of the resp. salicylideneaniline group. Higher LCST values were measured for UV-irradiated solutions of the copolymers in comparison to the nonirradiated copolymer solutions A maximum difference in the LCST of up to 13 °C was found for poly(N-cyclopropylacrylamide) copolymer containing 15.0 mol % of salicylideneaniline groups. Within this temperature range, a reversible solubility change of the copolymer could be induced by irradiation with light. 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. 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: Benzyl benzodithioate

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

The Use of Chiral BINAM NHC-Rh(III) Complexes in Enantioselective Hydrosilylation of 3-Oxo-3-arylpropionic Acid Methyl or Ethyl Esters was written by Xu, Qin;Gu, Xingxing;Liu, Sijia;Dou, Qinyu;Shi, Min. And the article was included in Journal of Organic Chemistry in 2007.Formula: C12H14O3 This article mentions the following:

Axially chiral BINAM N-heterocyclic carbene (NHC)-Rh(III) complexes were applied in the enantioselective hydrosilylation of 3-oxo-3-arylpropionic acid Me or Et esters. The reduction products 3-hydroxy-3-arylpropionic acid Me or Et esters could be obtained in good yields with good to excellent enantioselectivities under mild conditions. In the experiment, the researchers used many compounds, for example, Ethyl 3-oxo-3-(m-tolyl)propanoate (cas: 33166-79-9Formula: C12H14O3).

Ethyl 3-oxo-3-(m-tolyl)propanoate (cas: 33166-79-9) 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 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. Formula: C12H14O3

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

Optically active γ-hydroxy sulfone Julia reagents for the synthesis of peptidyl olefin peptidomimetics was written by Mirilashvili, Sima;Chasid-Rubinstein, Naama;Albeck, Amnon. And the article was included in European Journal of Organic Chemistry in 2008.Recommanded Product: 10203-58-4 This article mentions the following:

Peptidyl olefin peptidomimetics serve as biol. active compounds or as intermediates for other peptidyl isosteres. We developed a chemoenzymic stereoselective approach to optically active γ-hydroxy sulfones to be assembled into peptidyl olefins by the Julia reaction. Key enzymic hydrolysis of prochiral diesters to the corresponding hydroxy esters introduces optical activity. The sequence of the subsequent chem. reactions, either protection-hydrolysis-functionalization or functionalization-hydrolysis-protection, determines the absolute stereochem. of the final sulfone building block. In the experiment, the researchers used many compounds, for example, Diethyl isobutylmalonate (cas: 10203-58-4Recommanded Product: 10203-58-4).

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. 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.Recommanded Product: 10203-58-4

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

Effects of different exaction methods on constituents of volatile oil from Idesia polycarpa maxim was written by Ye, Yang;Wang, Xiao-meng;Bu, Gui-xian;Xiao, Ping;Chen, Fang;Tang, Lin. And the article was included in Sichuan Daxue Xuebao, Ziran Kexueban in 2013.Related Products of 106-79-6 This article mentions the following:

The volatile oils of Idesia polycarpa Maxim fruits were extracted by different methods such as steam distillation, ultrasonic and Soxhlet extraction The chem. compounds were separated and identified by capillary GC-MS method. The relative content of each component was calculated by area normalization. 64, 50 And 57 volatile components as listed in Table 1 were identified, and 38 components were owned by all. The main components are linoleic acid, palmitic acid, oleic acid, squalene, γ-nonalactone and γ-Tocopherol etc. The components extracted by steam distillation were much more compared with other methods, while the extract rate by Soxhlet extraction was the highest. In the experiment, the researchers used many compounds, for example, Dimethyl decanedioate (cas: 106-79-6Related Products of 106-79-6).

Dimethyl decanedioate (cas: 106-79-6) 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.Related Products of 106-79-6

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