Tag: 200-300

Pd-Catalyzed Regioselective Branched Hydrocarboxylation of Terminal Olefins with Formic Acid was written by Ren, Wenlong;Wang, Mingzhou;Guo, Jianqiong;Zhou, Jintao;Chu, Jianxiao;Shi, Yuan;Shi, Yian. And the article was included in Organic Letters in 2022.HPLC of Formula: 3903-40-0 This article mentions the following:

A regioselective Pd-catalyzed hydrocarboxylation of terminal olefins with HCOOH was described. A wide variety of branched carboxylic acids can readily be obtained with high regioselectivities under mild reaction conditions. The reaction is operationally simple and requires no handling of toxic CO. The ligand and LiCl are important factors for reaction reactivity and selectivity. 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

Studies of amines and ammonium compounds. CXCIV. A novel route for the synthesis of 1,1-bis(alkoxycarbonyl)-2-methylene-3-cyclopentenes was written by Kocharyan, S. T.;Gamburyan, L. Kh.;Razina, T. L.;Ogandzhanyan, S. M.;Babayan, A. T.. And the article was included in Armyanskii Khimicheskii Zhurnal in 1986.SDS of cas: 1190-39-2 This article mentions the following:

CH₂(CO₂R)₂ and MeCOCH₂CO₂Et were alkylated with Na and [R₂MeNCH₂CCCH:CH₂]I in Me₂SO; the products cyclized under the reaction conditions to give âˆ?5% cyclopentenes I (R = Me, Et, Bu) or 25% cyclopentene II. In the experiment, the researchers used many compounds, for example, malonic acid dibutyl ester (cas: 1190-39-2SDS of cas: 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. Polyesters are important plastics, with monomers linked by ester moieties. 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.SDS of cas: 1190-39-2

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

Chemical profiling, cytotoxic activities through apoptosis induction in MCF-7 cells and molecular docking of Phyllostachys heterocycla bark nonpolar extract was written by Abdelhameed, Reda F. A.;Habib, Eman S.;Ibrahim, Ahmed K.;Yamada, Koji;Abdel-Kader, Maged S.;Ibrahim, Amany K.;Ahmed, Safwat A.;Badr, Jihan M.;Nafie, Mohamed S.. And the article was included in Journal of Biomolecular Structure and Dynamics.Computed Properties of C12H22O4 This article mentions the following:

The chem. constituents of the nonpolar fractions of the bamboo shoot skin Phyllostachys heterocycla were extensively studied. The phytochem. study was divided into two parts: the first deals with isolation of the chem. constituents using different chromatog. techniques that resulted in isolation of four compounds The chem. structures of the pure isolated compounds were elucidated using different spectroscopic data. The second part deals with identification of the rest of the constituents using the GC technique. Addnl., both crude extract and the pure isolated compounds were investigated for cytotoxic activity. One of the isolated compounds; namely glyceryl 1-monopalmitate showed highly promising effect against the MCF-7 cells with (IC₅₀ = 19.78 μM) compared to 5-FU (26.98 μM), and it remarkably stimulated apoptotic breast cancer cell death with 31.6-fold (16.13% compared to 0.51 for the control) at pre-G1 and G2/M-phase cell cycle arrest and blocked the progression of MCF-7 cells. Moreover, the identified compounds especially were found to have high binding affinity towards both TPK and VEGFR-2 through the mol. docking studies which highlight its mode of action. HighlightsChem. profiling of Phyllostachys heterocycla bark nonpolar extract was fully identified. Glyceryl 1-monopalmitate showed highly promising effect against the MCF-7 cells with (IC₅₀ = 19.78 μM) compared to 5-FU (26.98 μM). Glyceryl 1-monopalmitate significantly stimulated apoptotic breast cancer cell death with 31.6-fold by arresting cell cycle at G2/M and preG1 phases. Mol. docking simulation showed good binding affinities towards TPK and VEGFR-2 proteins. 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, 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.Computed Properties of C12H22O4

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

Homogeneous and heterogeneous sunflower oil methanolysis over 12-tungstophosphoric, sulfuric and boric acids was written by Idrissou, Yasmina;Mazari, Tassadit;Benadji, Siham;Hamdi, Maamar;Rabia, Cherifa. And the article was included in Reaction Kinetics, Mechanisms and Catalysis in 2016.Formula: C11H20O4 This article mentions the following:

A series of acids with different strength acidity, heteropolyacid H₃PW₁₂O₄₀ (HPW) and oxoacids, H₂SO₄ and H₃BO₃ were used as catalysts for the sunflower oil methanolysis with an oil/methanol ratio of 1/29, a reaction temperature of 60° and a reaction time of 3 h. The effect of silica support on the catalytic performance of HPW was investigated. (10-50 Wt%) HPW supported on silica were characterized by XRD, FT-IR and N₂ physisorption (BET sp. surface areas, mean pore diameters and pore volumes). The fatty acid Me esters, reaction products, were analyzed and quantified by gas chromatog. HPW and 30 wt% HPW/SiO₂ have similar catalytic behavior with a biodiesel yield of 60-63 %. Side reactions were observed at 100° in the presence of 30 wt% HPW/SiO₂ resulting in the formation of oxygenated products (alc., ketone, acid) in addition to fatty acid Me esters, as evidenced by GC-MS. A plausible mechanism of supported heteropolyacid catalyzing the sunflower oil methanolysis is proposed. 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 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. 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.Formula: C11H20O4

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

Synthesis of 2,3-bis(benzoyl)butanedioic acid 1,4-diethyl ester derivatives via cerium ammonium nitrate-mediated oxidative coupling reaction of β-oxobenzenepropanoic acid esters was written by Song, Jia-Nan;Li, Xin-Sheng;Xu, Dong-Cheng;Cai, Ling-Ling. And the article was included in Youji Huaxue in 2008.Category: esters-buliding-blocks This article mentions the following:

A method for the synthesis of the above-mentioned title compounds (diketone dimers) is reported here. A mild method for preparation of 1,4-diketone via an intermol. coupling of substituted aryl β-keto esters by use of cerium ammonium nitrate in CH₃CN/H₂O is described. The procedure provided a convenient method for the synthesis of such 1,4-diketones in up to 92% yields. The reaction mechanism was discussed. In the experiment, the researchers used many compounds, for example, Ethyl 3-oxo-3-(m-tolyl)propanoate (cas: 33166-79-9Category: esters-buliding-blocks).

Ethyl 3-oxo-3-(m-tolyl)propanoate (cas: 33166-79-9) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. 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. Category: esters-buliding-blocks

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

Oxidation of oleic acid by mercuric oxide was written by Varlamov, V. S.. And the article was included in Trudy Vsesoyuz. Nauch.-Issledovatel. Inst. Zhirov in 1957.Computed Properties of C11H20O4 This article mentions the following:

Oleic acid (I) was oxidized by heating and stirring the acid and HgO (1 mole HgO per mole of acid) to 280° (10 hrs., CO₂ atm.) and then cooling the mixture to about 20°. The obtained mass was treated with dilute HCl to decompose formed Hg salts of I, washed with H₂O, and dried in vacuo (CO₂ atm.). In this reaction, metallic Hg separated. It was established that the oxidation formed hydroxyl groups, which led to formation of hydroxy acids. Insignificant lowering of the iodine number showed that CH₂ groups were oxidized in preference to CH: CH groups, which was explained by the high activity of atomic O and also by a large number of methylene groups. In the experiment, the researchers used many compounds, for example, malonic acid dibutyl ester (cas: 1190-39-2Computed Properties of C11H20O4).

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. 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.Computed Properties of C11H20O4

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

Synthesis, characterization and application of two new lariat crown ethers in construction of PVC membrane, coated wire and coated graphite electrodes: application to flow injection potentiometry was written by Shamsipur, Mojtaba;Dezaki, Abbas Shirmardi;Akhond, Morteza;Sharghi, Hashem;Khalife, Reza. And the article was included in International Journal of Environmental Analytical Chemistry in 2011.Quality Control of Dimethyl decanedioate This article mentions the following:

Two lariat crown ethers, 7-(2-Hydroxy-5-methylbenzyl)-5,6,7,8,9,10-hexahydro-2H-benzo[b][1,4,7,10,13]pentadecine-3,11(4H,12H)dione (L1) and, 7-(5-tert-butyl-2-hydroxybenzyl)-5,6,7,8,9,10-hexahydro-2H-benzo[b][1,4,7,10,13]dioatriazacyclopentadecine-3,11(4H,12H)dione (L2) were synthesized, characterized and used as active components for fabrication of PVC membrane electrode (PME), coated graphite electrode (CGE) and coated wire electrodes (CWE) for sensing Co²⁺ ion. Potassium tetrakis(p-cholorophenyl) borate(KTpClPB) and o-nitrophenyloctyl ether (o-NPOE) were added in a PVC matrix. The two lariat ethers were tested, L1 showed better electrode characteristics than L2. The electrodes exhibited linear Nernstian responses to Co²⁺ ion in the linear concentration range of 3.3 × 10^-6-1.9 × 10^-2 M (for PME), 2.3 × 10^-7-7.9 × 10^-2 M (for CWE), and 5.0 × 10^-8-1.2 × 10^-2 M (for CGE). The CGE was used as a proper detection system in flow-injection potentiometry (FIP) with a linear Nernstian range of 2.3 × 10^-7-1.2 × 10^-2 M over a pH range of 3.2 to 8.0; the limit of detection for PME, CWE, CGE, and CGE-FIP systems are 1.2 × 10^-6, 2.5 × 10^-7, 3.5 × 10^-8 and 1.0 × 10^-7 M, resp. The electrodes revealed fairly good discriminating ability towards Co²⁺ in comparison with a large number of alkali, alk. earth, transition and heavy metal ions. The electrodes are chem. inert, showing fast response time of <5 s, and could be used practically over a period of 1 mo. CGE also was used for measurement of Co²⁺ in binary mixtures In the experiment, the researchers used many compounds, for example, Dimethyl decanedioate (cas: 106-79-6Quality Control of Dimethyl decanedioate).

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. 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. Quality Control of Dimethyl decanedioate

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

Indium-catalyzed, novel route to β,β-disubstituted indanones via tandem Nakamura addition-hydroarylation-decarboxylation sequence was written by Rajesh, Nimmakuri;Prajapati, Dipak. And the article was included in Chemical Communications (Cambridge, United Kingdom) in 2015.Computed Properties of C12H14O3 This article mentions the following:

A novel method for the construction of β,β-disubstituted indanones was developed via tandem Nakamura addition-hydroarylation-decarboxylation process. Indium(III) triflate was demonstrated as a versatile multitasking catalyst, which catalyzes three different chem. transformations under one-pot conditions. In the experiment, the researchers used many compounds, for example, Ethyl 3-oxo-3-(m-tolyl)propanoate (cas: 33166-79-9Computed Properties of C12H14O3).

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

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

Synthesis of Thiazoles and Isothiazoles via Three-Component Reaction of Enaminoesters, Sulfur, and Bromodifluoroacetamides/Esters was written by Ma, Xingxing;Yu, Xiaoxia;Huang, Hua;Zhou, Yao;Song, Qiuling. And the article was included in Organic Letters in 2020.Reference of 33166-79-9 This article mentions the following:

A three-component strategy for the synthesis of thiazoles, e.g., I, and isothiazoles, e.g., II, has been developed by employing enaminoesters, fluorodibromoamides/ester, and sulfur. The thiazoles and isothiazoles were formed via two C-F bond cleavages along with the formation of new C-S, C-N, and N-S bonds. The strategy provides high selectivity for the synthesis of thiazoles/isothiazoles, which have vital applications in drug discovery and development. In the experiment, the researchers used many compounds, for example, Ethyl 3-oxo-3-(m-tolyl)propanoate (cas: 33166-79-9Reference of 33166-79-9).

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. 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.Reference of 33166-79-9

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

Homoallylic rearrangement with participating groups. III. Acid-catalyzed isomerization of cis- and trans-2-[2,2′-dimethyl-3′-(but-3”-enyl)]-cyclopropyl-2-propanols was written by Julia, Marc;Descoins, Charles. And the article was included in Bulletin de la Societe Chimique de France in 1970.Recommanded Product: Diethyl isobutylmalonate This article mentions the following:

Treatment of the title alcs. (I) with HCO2H gave appreciable amount of the participation product trans-II and (III), which on protonation gave quant. II. Substitution of the cyclopropyl ring favored the formation of II, due to steric effects. The stereochemistry and mechanisms of acid isomerizations of I are discussed. In the experiment, the researchers used many compounds, for example, Diethyl isobutylmalonate (cas: 10203-58-4Recommanded Product: Diethyl isobutylmalonate).

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. Polyesters are important plastics, with monomers linked by ester moieties. 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: Diethyl isobutylmalonate

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