Category: 106-73-0

Structural studies and applications of water soluble (phenoxy)imine palladium(II) complexes as catalysts in biphasic methoxycarbonylation of 1-hexene was written by Akiri, Saphan O.;Ojwach, Stephen O.. And the article was included in Journal of Organometallic Chemistry in 2021.Application In Synthesis of Methyl heptanoate The following contents are mentioned in the article:

Reactions of the ligands; sodium 4-hydroxy-3-((phenylimino)methyl)benzenesulfonate (L1), sodium 3-(((2,6-dimethylphenyl)imino)methyl)-4-hydroxybenzenesulfonate (L2) and sodium 3-(((2,6-diisopropylphenyl)imino)methyl)-4-hydroxybenzenesulfonate (L3) with Pd(OAc)₂ afforded the resp. palladium(II) complexes [Pd(L1)₂] (PdL1), [Pd(L2)₂] (PdL2) and [Pd(L3)₂] (PdL3). In addition, treatment of the non-water soluble ligands 2-((phenylimino)methyl)phenol (L4), 2-(((2,6-dimethylphenyl)imino)methyl)phenol (L5) and 2-(((2,6-diisopropylphenyl)imino)methyl)phenol (L6) with Pd(OAc)₂ gave the corresponding complexes [Pd(L4)₂] (PdL4), [Pd(L5)₂] (PdL5) and [Pd(L6)₂] (PdL6) in good yields. Solid state structures of complexes PdL1 and PdL4 established the formation of bis(chelated) square planar neutral compounds All the complexes formed active catalysts in the methoxycarbonylation of 1-hexene, affording yields of up to 92% within 20 h and regioselectivity of 73% in favor of linear esters. The catalytic activity and selectivity of the complexes depended on the steric encumbrance around the coordination center. The water soluble complexes displayed comparable catalytic behavior to the non-water soluble systems. The complexes could be recycled five times with minimal changes in both the catalytic activities and regio-selectivity. This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0Application In Synthesis of Methyl heptanoate).

Methyl heptanoate (cas: 106-73-0) 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. 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.Application In Synthesis of Methyl heptanoate

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

Essential oils from Humulus lupulus as novel control agents against Varroa destructor was written by Iglesias, A.;Mitton, G.;Szawarski, N.;Cooley, H.;Ramos, F.;Meroi Arcerito, F.;Brasesco, C.;Ramirez, C.;Gende, L.;Eguaras, M.;Fanovich, A.;Maggi, M.. And the article was included in Industrial Crops and Products in 2020.Quality Control of Methyl heptanoate The following contents are mentioned in the article:

Humulus lupulus, commonly known as hops has widely been used in breweries globally, however, the acaricidal properties of H. lupulus derived products could also be a novel and interesting avenue of study against insect pests. We tested the antiparasitic activity of H. lupulus essential oils against the honeybee mite Varroa destructor, and its bioactivity against the honeybee Apis mellifera. The hop varieties used in this study were Cascade, Victoria, Spalt, and Mapuche. The essential oils were extracted from flowers by hydrodistillation and then characterized by CG-MS. We evaluated the toxicity of hop essential oils against mites, adult bees (A. mellifera) and larvae, and whether the oils were an attractant or repellent to mites. The major components of the oils for all varieties were β-myrcene, myrcene, beta-farnesene, alpha, and beta caryophyllene. Bioassays revealed that essential oils from all the varieties were toxic to the V. destructor mite. Victoria essential oil was the most toxic to V. destructor. The oils did not act as a repellent or attractant to the mites, and the bee (A. mellifera) mortality associated with complete exposure to the essential oil application was moderate to low. The results presented here provide promising results for the application of essential oils from hops grown in South America as an alternative method for controlling the honeybee mite Varroa destructor. This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0Quality Control of Methyl heptanoate).

Methyl heptanoate (cas: 106-73-0) 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.Quality Control of Methyl heptanoate

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

Rapid differentiation of Chinese hop varieties (Humulus lupulus) using volatile fingerprinting by HS-SPME-GC-MS combined with multivariate statistical analysis was written by Liu, Zechang;Wang, Liping;Liu, Yumei. And the article was included in Journal of the Science of Food and Agriculture in 2018.Synthetic Route of C8H16O2 The following contents are mentioned in the article:

BACKGROUND : Hops impart flavor to beer, with the volatile components characterizing the various hop varieties and qualities. Fingerprinting, especially flavor fingerprinting, is often used to identify ‘flavor products’ because inconsistencies in the description of flavor may lead to an incorrect definition of beer quality. Compared to flavor fingerprinting, volatile fingerprinting is simpler and easier. RESULTS : We performed volatile fingerprinting using head space-solid phase micro-extraction gas chromatog.-mass spectrometry combined with similarity anal. and principal component anal. (PCA) for evaluating and distinguishing between three major Chinese hops. Eighty-four volatiles were identified, which were classified into seven categories. Volatile fingerprinting based on similarity anal. did not yield any obvious result. By contrast, hop varieties and qualities were identified using volatile fingerprinting based on PCA. The potential variables explained the variance in the three hop varieties. In addition, the dendrogram and principal component score plot described the differences and classifications of hops. CONCLUSION : Volatile fingerprinting plus multivariate statistical anal. can rapidly differentiate between the different varieties and qualities of the three major Chinese hops. Furthermore, this method can be used as a reference in other fields. © 2018 Society of Chem. Industry. This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0Synthetic Route of C8H16O2).

Methyl heptanoate (cas: 106-73-0) 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.Synthetic Route of C8H16O2

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

Terahertz short-range mobilities in neat and intermixed regions of polymer:fullerene blends with controlled phase morphology was written by Krauspe, Philipp;Tsokkou, Demetra;Causa’, Martina;Buchaca-Domingo, Ester;Fei, Zhuping;Heeney, Martin;Stingelin, Natalie;Banerji, Natalie. And the article was included in Journal of Materials Chemistry A in 2018.Application In Synthesis of Methyl heptanoate The following contents are mentioned in the article:

The mol.-level arrangement of the donor and acceptor (i.e. the local morphol.) in organic solar cells governs charge separation and charge transport via its effect on the mobility of charges. However, the nanometer-scale mobility in such systems, which can be measured using terahertz (THz) spectroscopy, has been little investigated at relevant low excitation densities, due to extremely weak signals. Here, we study the mobility over short distances and at ultrashort times using time-resolved optical-pump-THz-probe (OPTP) spectroscopy on pBTTT:PCBM blends. This complements our previous results obtained with transient absorption (TA) and electro-modulated differential absorption (EDA) techniques. In the pBTTT:PCBM system, the co-existence of fullerene-/polymer-rich (‘neat’) and co-crystalline (‘intermixed’) regions can be controlled through choice of composition (weight ratio of the two components, use of processing additive). We demonstrate high short-range mobilities that help charges sep., and we show how this mobility of photogenerated charges develops in time, in particular as the charges move between different phase regions of the blend. By reducing the pump fluence below the threshold for nonlinear recombination mechanisms, we access these properties at solar cell operating conditions. Overall, we explain the necessity of different local phases through their influence on charge lifetime and mobility. This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0Application In Synthesis of Methyl heptanoate).

Methyl heptanoate (cas: 106-73-0) 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. 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 Methyl heptanoate

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

Methoxycarbonylation of olefins catalyzed by homogeneous palladium(II) complexes of (phenoxy)imine ligands bearing alkoxy silane groups was written by Akiri, Saphan O.;Ojwach, Stephen O.. And the article was included in Inorganica Chimica Acta in 2019.Category: esters-buliding-blocks The following contents are mentioned in the article:

The Schiff base compounds 2-phenyl-2-((3(triethoxysilyl)propyl)imino)ethanol (HL1) and 4-methyl-2-((3(triethoxysilyl)propyl)imino)methylphenol (HL2) were synthesized via condensation reactions of a suitable ketone or aldehyde and (3-aminopropyl)triethoxy silane (APTES). Whereas the reactions of HL1 and HL2 with [Pd(OAc)₂] afforded the bis(chelated) Pd compounds [Pd(L1)₂] (1) and [Pd(L2)₂] (2), treatments of HL1 and HL2 with [Pd(NCMe)₂Cl₂] gave the mono(chelated) complexes [Pd(HL1)₂Cl₂] (3) and [Pd(HL2)₂Cl₂] (4), resp. Structural characterization of the compounds was achieved using NMR and FTIR spectroscopies, mass spectrometry and micro-analyses. Complexes 1–4 gave active catalysts in the methoxycarbonylation of higher olefins producing linear esters as the major products. The coordination environment around the Pd center of the complexes dictated the relative catalytic activity, where the bis(chelated) analogs 1 and 2 were more active than the mono(chelated) analogs 3 and 4. The nature of the acid promoter, phosphine groups, solvent system, olefin substrate and reactions conditions influenced the catalytic behavior of the complexes. This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0Category: esters-buliding-blocks).

Methyl heptanoate (cas: 106-73-0) 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. 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.Category: esters-buliding-blocks

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

Densities and interfacial tensions for fatty acid methyl esters (from methyl formate to methyl heptanoate) + water demixed mixtures at atmospheric pressure conditions was written by del Pozo, Irene;Cartes, Marcela;Llovell, Felix;Mejia, Andres. And the article was included in Journal of Chemical Thermodynamics in 2018.Related Products of 106-73-0 The following contents are mentioned in the article:

Exptl. determination of mass densities and interfacial tensions (IFT) at liquid-liquid equilibrium (LLE) for Me ester (FAME) demixed aqueous family (from Me formate to Me heptanoate) are reported as a function of temperature at atm. pressure (101.3 kPa). Mass d. determinations are carried out in a vibrating tube densimeter, whereas a spinning drop tensiometer is used for performing IFT measurements. Furthermore, the IFT data have been correlated by using a simplified version of the Square Gradient Theory (SSGT) as applied to the Non-Random Two Liquids (NRTL) activity coefficient model. Based on the exptl. results, the mass densities of both aqueous and Me ester bulk phase decrease with temperature, whereas the IFT increases with the temperature and reaches a maximum value, which is related to the maximum tie line in the LLE. For higher temperatures, IFT starts to decrease with temperature The correlation approach of IFT (SSGT + NRTL) was found to be suitable for correlating the IFT of the mixtures as a function of temperature and also provides a route to explore other interfacial properties, such as interfacial concentration profiles, which are difficult to measure. Considering the results from the calculated interfacial profiles along the interfacial region, the components (FAMEs and water) neither exhibit surface activity nor adsorption activity and the interfacial width decreases with temperature, as it was expected. This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0Related Products of 106-73-0).

Methyl heptanoate (cas: 106-73-0) 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. 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.Related Products of 106-73-0

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

Molecular thermodynamic modeling of surface tensions of some fatty acid esters and biodiesels was written by Hosseini, Sayed Mostafa;Pierantozzi, Mariano. And the article was included in Journal of Molecular Liquids in 2019.Recommanded Product: Methyl heptanoate The following contents are mentioned in the article:

This work addresses the mol. thermodn. and artificial neural network (ANN) modeling of surface tensions of several fatty acid esters and biodiesels. Two biodiesels were considered as pure fluid and the other as a binary mixture The mol. thermodn. model is based on the statistical mech. expression according to Fowler-Kirkwood-Buff approximation Regarding this, contributions to surface tension from the hard-chain repulsions, Lennard-Jones dispersion forces, and dipolar interactions were considered and assumed to be additive in the model development. The mol. thermodn. model used three mol. parameters reflecting the hard-core diameter, dispersive energy and segment number as well as the liquid densities for which the values were predicted from perturbed Yukawa-chain equation of state. Further, the model used dipole moment as an adjustable parameter for the accurate calculation of surface tensions. The model could predict 149 surface tension data points for 9 FAEs and 3 biodiesels in 268.6-393 K range with the average absolute relative deviation (AARD) of 1.82%. The degree of accuracy of proposed model has also been compared with some empirical equations. Concerning ANN modeling, a network comprising two hidden layers and 9 neurons for each layer has been trained, according to the constructive approach. The result of the training was quite good, the AARD of the pure fluid dataset of 137 points was found to be 0.44%. This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0Recommanded Product: Methyl heptanoate).

Methyl heptanoate (cas: 106-73-0) 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. 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: Methyl heptanoate

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

The potential correlation between bacterial diversity and the characteristic volatile flavour of traditional dry sausages from Northeast China was written by Hu, Yingying;Zhang, Lang;Liu, Qian;Wang, Yan;Chen, Qian;Kong, Baohua. And the article was included in Food Microbiology in 2020.Related Products of 106-73-0 The following contents are mentioned in the article:

The objective of this study was to explore the correlation between bacterial communities and volatile compounds in traditional dry sausages from different regions in Northeast China. The bacterial community structure of dry sausages from five different regions as determined by high-throughput sequencing technol. demonstrated that Firmicutes and Proteobacteria were the predominant phyla; Lactobacillus, Staphylococcus, Leuconostoc, Lactococcus and Weissella were the predominant genera; and Staphylococcus xylosus, Lactobacillus sakei, Weissella hellenica, Leuconostoc citreum, Lactococcus raffinolactis and Lactobacillus plantarum were the predominant species. Meanwhile, a total of 120 volatile compounds were detected in sausages from five different regions and mainly included alcs., acids, aldehydes, ketones, esters and terpenes. Furthermore, the potential correlations between the core bacteria and major volatile compounds (64) were explored based on Spearman’s correlation anal. Pos. correlations were found between W. hellenica, Lb. sakei, Lactococcus lactis, Lactobacillus alimentarius, Lb. plantarum and carboxylic acids and alcs. Lc. lactis, Lb. alimentarius and Lb. plantarum were associated with the production of most esters, aldehydes and ketones. This study provides a deep insight into the relationship between the bacterial community and the volatile flavor profile of dry sausages, which may be helpful for the production of fermented dry sausages. This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0Related Products of 106-73-0).

Methyl heptanoate (cas: 106-73-0) 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.Related Products of 106-73-0

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

Utilization of generalized energy-based fragmentation method on the study of hydrogen abstraction reactions of large methyl esters was written by Chi, Yawei;You, Xiaoqing;Zhang, Lidong;Li, Wei. And the article was included in Combustion and Flame in 2018.COA of Formula: C8H16O2 The following contents are mentioned in the article:

Accurate reaction energies and barrier heights are essential for the construction of reliable combustion kinetics models of various fuels. Nevertheless, the computational cost for electronic energy calculations using high-level ab initio methods increases dramatically with the size of mols. A solution to this problem is to utilize a generalized energy-based fragmentation (GEBF) approach, as it has been found to be effective in reducing the scaling of the computational cost in calculation of energetics and other mol. properties for many large mols., clusters, and crystals with various quantum chem. methods. This work attempts to apply this GEBF approach in the study of one important type of reactions of large Me esters, i.e., the hydrogen abstraction reactions by hydrogen atoms. The energies of stationary points on the potential energy surfaces were examined using both conventional quantum chem. methods and the GEBF method at the QCISD(T)/CBS// M06-2X/6-311+ + g(d,p) level for C_nH_2n+1COOCH₃ (n = 4, 5) + H reactions. The results show that the unsigned energy deviation of the GEBF method from the conventional method is less than 0.1 kcal/mol, while the computational time is greatly reduced, e.g. up to 90% at the QCISD(T)/cc-pVTZ level. Based on the quantum chem. calculations, rate constants of the hydrogen abstraction reactions of C_nH_2n+1COOCH₃ (n = 4, 5, 8) by H atoms were computed. This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0COA of Formula: C8H16O2).

Methyl heptanoate (cas: 106-73-0) 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. 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.COA of Formula: C8H16O2

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

Prediction of split injection strategy assisted diesel engine combustion, performance and emission characteristics fuelled waste frying oil methyl ester through central composite design was written by Dharmalingam, Babu;Deepakkumar, R.;Bhattacharya, Kasturi;Paulraj Gundupalli, Marttin;Sriariyanun, Malinee. And the article was included in Materials Today: Proceedings.Formula: C8H16O2 The following contents are mentioned in the article:

The objective of this study is to use response surface methodol. to forecast the performance, combustion, and emission characteristics of an advanced injection strategy-assisted diesel engine running on waste frying oil Me ester. The experiment was carried out on a diesel engine using a high-pressure fuel injection system. The main injection timing ranges varied from 16 to 24 °CA bTDC, whereas the post-injection ranges from -6 °CA bTDC to 6 °CA aTDC. The injection quantity for the main and post injections quantity varied from 70 % to 90 %, 10 % to 30 %, and the injection pressure is set at 500 bar. Experiments were carried out using a design matrix developed by the design of experiments At 100 % load, B100-90 %-10 % obtained the highest BTE of 33.87 % and the lowest fuel consumption of 0.268 kg/kW-hr. At the main injection timing of 22 °CA and post-injection timing of -4 °CA, D100-80 %-20 % achieved the lowest unburned hydrocarbon, Smoke emission of 13 ppm, and 1.613 FSN resp. The point prediction approach was used to forecast the combustion and emission parameters of a diesel engine, and the predicted results were in good agreement with the exptl. results. Furthermore, when compared to advance injection timing for biodiesel fuel, retarded injection timing reduces nitric oxide emission. The Split injection strategy is one of the most effective techniques to reduce soot and NO_x emissions while maintaining diesel engine efficiency. This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0Formula: C8H16O2).

Methyl heptanoate (cas: 106-73-0) 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. 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: C8H16O2

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