Tag: M.W=150-200

Deng, Zhixin published the artcileLigand-enabled palladium-catalyzed hydroesterification of vinyl arenes with high linear selectivity to access 3-arylpropanoate esters, Safety of Ethyl nonanoate, the main research area is arylpropanoate ester preparation regioselective; vinyl arene carbon monoxide alc hydroesterification palladium catalyst regioselective.

Palladium-catalyzed linear-selective hydroesterification of vinyl arenes with alcs. enabled by diphosphine ligands derived from bis[2-(diphenylphosphino)ethyl]amides has been developed. A variety of 3-arylpropanoate esters were obtained in high yields and regioselectivity. The robustness of this methodol. was further demonstrated by the efficient gram-scale synthesis of the Et 3-phenylpropanoate as a precursor to hydrocinnamic acid.

Chemical Communications (Cambridge, United Kingdom) published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 123-29-5 belongs to class esters-buliding-blocks, name is Ethyl nonanoate, and the molecular formula is C11H22O2, Safety of Ethyl nonanoate.

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

Liang, Wen-Yu published the artcilePd-catalyzed alkoxycarbonylation of alkenes promoted by H2O free of auxiliary acid additive, Name: Methyl octanoate, the main research area is ester green preparation; alkene alc carbon monoxide alkoxycarbonylation palladium catalyst water promoted.

The Pd-catalyzed and water promoted alkoxycarbonylation of alkenes using alcs. and carbon monoxide to afford esters RCHR1C(O)OR2 [R = n-Bu, cyclohexyl, Ph, etc.; R1 = H, Me; R2 = Me, Et, iPr] was reported. Water instead of Bronsted/Lewis acid was found to effectively improve the catalytic performance of Pd(MeCN)2Cl2-Xantphos system for alkoxycarbonylation of alkenes. Under the optimal conditions, the best yield of 97% was obtained for the target products Me 3-phenylpropanoate and Me 2-phenylpropanoate with L/B of 4.3 and TON of 192. The in situ high pressure FT-IR anal. verified that water played an important role in promoting formation and stability of Pd-H active species which was responsible for the efficient alkoxycarbonylation of alkenes. In addition, the ligand effect of Xantphos on this reaction was discussed.

Molecular Catalysis published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Name: Methyl octanoate.

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

Gao, Yadong published the artcileVisible-Light-Induced Nickel-Catalyzed Cross-Coupling with Alkylzirconocenes from Unactivated Alkenes, Computed Properties of 110-42-9, the main research area is alkene alkyl iodide zirconocene nickel photochem regioselective cross coupling; aralkyl chloride alkene zirconocene nickel photochem regioselective cross coupling; aryl iodide alkene zirconocene nickel photochem regioselective cross coupling; unsaturated bromide alkene zirconocene nickel photochem regioselective cross coupling.

Visible-light-induced single nickel-catalyzed C(sp3)-C(sp3), C(sp3)-C(sp2) and C(sp3)-C(sp) cross-coupling reactions were reported using alkylzirconocenes, which were easily generated in-situ from terminal or internal unactivated alkenes through hydrozirconation and chain walking. This method was mild and applicable for a large range of substrates including primary, secondary, tertiary alkyl, aryl, alkenyl, alkynyl halides and a variety of alkenes. Mechanistic studies suggested a novel nickel-catalyzed radical cross-coupling pathway, which represented the first visible-light-induced transformation of alkylzirconocenes.

Chem published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Computed Properties of 110-42-9.

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

da Silva, Aline Priscilla Gomes published the artcileVolatile Compounds Determined by SPME-GC, Bioactive Compounds, In Vitro Antioxidant Capacity and Physicochemical Characteristics of Four Native Fruits from South America, Computed Properties of 111-11-5, the main research area is ocorocillo cambuca volatile compound flavonoid radical scavenging activity food; Byrsonima crassifolia; Byrsonima stipulacea; Chemical composition; Eugenia boliviana; Plinia edulis.

The aim of the present study was to identify volatile organic compounds (VOCs) by SPME-GC and quantify the bioactive compounds (ascorbic acid, total flavonoids and total phenolic content), antioxidant capacity (DPPH and ORAC) and physicochem. characteristics of ocorocillo, cambuca, murici da praia and murici do campo, four native South American fruits. A total of 41 volatile compounds were identified in ocorocillo, of which 17 were terpenes. Cambuca’s volatile profile contained aldehydes, aromatic hydrocarbons and alcs. Murici da praia and murici do campo contained high levels of fatty acid volatiles and esters, that contribute to their remarkable aroma. Ocorocillo contained high levels of ascorbic acid and total flavonoids, while presented lower ascorbic acid, flavonoid and phenolic levels. Murici da praia and murici do campo contained high amounts of phenolic compounds and high free-radical scavenging capacity (DPPH and ORAC). In addition, this fruit was sweeter and less acid compared to the other assessed fruits. The results suggest that these native fruits constitute a good source of volatile compounds and bioactive compounds, which may aid in their preservation interest and potential use in the food, cosmetic and pharmaceutical industries.

Plant Foods for Human Nutrition (New York, NY, United States) published new progress about Byrsonima crassifolia. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Computed Properties of 111-11-5.

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

Ianni, Andrea published the artcileZinc supplementation of lactating dairy cows: effects on chemical-nutritional quality and volatile profile of Caciocavallo cheese, Safety of Ethyl nonanoate, the main research area is lactation cheese chem nutritional quality zinc feeding experiment; Caciocavallo Cheese; Friesian Cow; Lipid Peroxidation; Lipid Profile; Volatile Compound; Zinc Oxide.

Effect of dietary zinc supplementation of Friesian cows on chem.-nutritional and aromatic properties of Caciocavallo cheese after 7 days (C7) and 120 days (C120) of ripening. The control group (CG) was fed with a conventional complete diet, while the exptl. group (zinc group, ZG) received a daily zinc supplementation of 60 mg for kg of dry complete feed. During the exptl. period, the milk yield was monitored and samples of milk and caciocavallo cheese were collected and analyzed for chem.-nutritional composition and aromatic profile. The enrichment of dairy cows diet with zinc, did not influence milk yield and composition, however a marked reduction of somatic cell count was evidenced. Both in milk and cheese the ZG samples were characterized by a lower concentration of satured fatty acids and an increase in oleic, vaccenic and rumenic acids. The aromatic profile of dairy products was also pos. affected by dietary zinc intake, with an increase in concentration of carboxylic acids, esters and lactones. The present results suggest a pos. role of dietary zinc intake in improving the quality of bovine milk and related cheese, in particular for the increase in concentration of bioactive fatty acids such as rumenic acid. The changes evidenced in cheese through the anal. of the volatile profile, would be consistent with the development of interesting organoleptic properties, although further evaluations should be performed to confirm the consumer acceptability of these changes.

Asian-Australasian Journal of Animal Sciences published new progress about Cheese (Caciocavallo). 123-29-5 belongs to class esters-buliding-blocks, name is Ethyl nonanoate, and the molecular formula is C11H22O2, Safety of Ethyl nonanoate.

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

Park, Hyeon-Yong published the artcileDiscrimination of Platycodon grandiflorum and Codonopsis lanceolata using gas chromatography-mass spectrometry-based metabolomics approach, Application of Methyl decanoate, the main research area is Platycodon Codonopsis metabolomics gas chromatog mass spectrometry traditional medicine; Codonopsis lanceolata; Gas chromatography-mass spectrometry (GC-MS); Metabolite profilings; Multivariate statistical analysis; Platycodon grandiflorum.

Species of herbaceous flowering perennial plant of the family Campanulaceae such as Platycodon grandiflorum (P. grandiflorum) and Codonopsis lanceolata (C. lanceolata) widely used in traditional medicine to treat different diseases. In spite of different medicinal results after consumption of the plants, it is hard to distinguish between two of them, because of their similar morphol. characteristics. In this study, a gas chromatog.-mass spectrometry (GC-MS) – based metabolite profiling approach was performed and examined to discriminate tuberous roots of P. grandiflorum and C. lanceolate for medicinal purposes. Two basic approaches for sample preparation, headspace solid-phase microextraction (HS-SPME) and solvent extraction were adopted. Multivariate statistical techniques, such as orthogonal partial least-squares discriminant anal. (OPLS-DA) plots showed significant differences between P. grandiflorum and C. lanceolata for polar primary and volatile organic metabolites. A number of potential candidates were suggested as the chemomarkers for discrimination of two plants.

Talanta published new progress about Codonopsis lanceolata. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Application of Methyl decanoate.

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

Osorio, Pedro R. A. published the artcileEssential oil of Noni, Morinda citrifolia L., fruits controls the rice stem-rot disease without detrimentally affect beneficial fungi and ladybeetles, Product Details of C11H22O2, the main research area is Morinda fruit essential oil.

The use of botanical fungicides has been presented as a promising tool to replace the use of synthetic compounds, as the former seems to offer reduced risks to the environment and human health. Here, we characterized the major constituents and evaluated the potential of essential oils of Noni, Morinda citrifolia L. plants for controlling stem-rot disease caused by the fungus Sclerotium rolfsii Catt in Neotropical rice, Oryza sativa L., fields. Using in silico mol. predictions and toxicol. approaches, we further assessed the essential oil selectivity against beneficial organisms such as the fungi Trichoderma asperellum Samuels, Lieckfeldt & Nirenbeand the ladybeetles Eriopis connexa Germar and Coleomegilla maculata DeGeer. Our results revealed that octanoic acid (64.0 %), butanoic acid (10.2 %), and hexanoic acid (8.6 %) were the major oil components. When applied at 30 mg/mL, the essential oil inhibited mycelial growth, whereas at 10 mg/mL, it inhibited the germination of all S. rolfsii sclerotia. The essential oil application at 25 mg/mL reduced disease severity in both curative (56.4 %) and preventive (71.2 %) methods. Essential oil applications (30 mg/mL) did not affect the beneficial fungus T. asperellum nor did it kill any ladybeetle. Our mol. docking analyses reinforced the essential oil selectivity actions predicting higher potential interactions between its major components and the tyrosine-tRNA ligase of S. rolfsii compared to those of T. asperellum. Collectively, our findings demonstrated that Noni essential oil could control S. rolfsii infestations without causing any detrimental effects on relevant beneficial organisms, highlighting its potential as an alternative fungicide.

Industrial Crops and Products published new progress about Coleomegilla maculata. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Product Details of C11H22O2.

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

Osorio, Pedro R. A. published the artcileEssential oil of Noni, Morinda citrifolia L., fruits controls the rice stem-rot disease without detrimentally affect beneficial fungi and ladybeetles, Formula: C9H18O2, the main research area is Morinda fruit essential oil.

The use of botanical fungicides has been presented as a promising tool to replace the use of synthetic compounds, as the former seems to offer reduced risks to the environment and human health. Here, we characterized the major constituents and evaluated the potential of essential oils of Noni, Morinda citrifolia L. plants for controlling stem-rot disease caused by the fungus Sclerotium rolfsii Catt in Neotropical rice, Oryza sativa L., fields. Using in silico mol. predictions and toxicol. approaches, we further assessed the essential oil selectivity against beneficial organisms such as the fungi Trichoderma asperellum Samuels, Lieckfeldt & Nirenbeand the ladybeetles Eriopis connexa Germar and Coleomegilla maculata DeGeer. Our results revealed that octanoic acid (64.0 %), butanoic acid (10.2 %), and hexanoic acid (8.6 %) were the major oil components. When applied at 30 mg/mL, the essential oil inhibited mycelial growth, whereas at 10 mg/mL, it inhibited the germination of all S. rolfsii sclerotia. The essential oil application at 25 mg/mL reduced disease severity in both curative (56.4 %) and preventive (71.2 %) methods. Essential oil applications (30 mg/mL) did not affect the beneficial fungus T. asperellum nor did it kill any ladybeetle. Our mol. docking analyses reinforced the essential oil selectivity actions predicting higher potential interactions between its major components and the tyrosine-tRNA ligase of S. rolfsii compared to those of T. asperellum. Collectively, our findings demonstrated that Noni essential oil could control S. rolfsii infestations without causing any detrimental effects on relevant beneficial organisms, highlighting its potential as an alternative fungicide.

Industrial Crops and Products published new progress about Coleomegilla maculata. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Formula: C9H18O2.

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

Zhang, Jiang published the artcileCharacterization of key aroma compounds in melon spirits using the sensomics concept, Safety of Ethyl nonanoate, the main research area is aroma melon spirit sensomics.

Processing melon into spirits has important environmental and economic value. However, the flavor of melon spirits is undesirable and has yet to be studied. In this study, a combination of odor activity value, gas chromatog.-olfactometry detection frequency anal., aroma reconstitution, and omission tests showed that key aroma compounds (Group 1), including 3,6-nonadien-1-ol and 3-nonen-1-ol, were responsible for the undesirable green and fatty aromas of melon spirits. Meanwhile, the desirable fruity and floral aromas were provided by Group 2 compounds, which included isoamyl acetate and (E)-damascenone. Omission tests of Group 1 and Group 2 compounds showed that, similar to the fruit and floral aromas, the green and fatty aromas were important components of melon spirit flavor. Furthermore, adding Group 2 compounds to the spirits inhibited green and fatty flavours, improved the fruit and floral aromas, and enhanced the sensory evaluation of melon spirits. This study provides a basis for improving the production process and aroma of melon spirits.

LWT–Food Science and Technology published new progress about Cucumis melo (spirit). 123-29-5 belongs to class esters-buliding-blocks, name is Ethyl nonanoate, and the molecular formula is C11H22O2, Safety of Ethyl nonanoate.

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

Zhou, Han-Chen published the artcileLarge scale preparation, stress analysis, and storage of headspace volatile condensates from Jasminum sambac flowers, Application In Synthesis of 140-11-4, the main research area is Jasminum volatile; Floral volatile condensates; Jasminum sambac; Odor activity value: SPME; Storage; Volatile compounds.

In this study, a large-scale preparation of jasmine floral volatile condensate (FVC) was conducted using fresh flowers without any extraction solvent involvement. Condensate volatile profiles were compared to those of fresh flowers for their scent characteristics and ability to withstand manufacturing and storage. The FVC possessed a typical jasmine flower scent, a similar odor polygon shape and greatly enhanced odor intensity and character odorants linalool, indole, and Me anthranilate. In late August and Sept. in Fuzhou, China, the ratio of odor activity values for indole/linalool in FVCs was close to that of fresh flowers, indicating that these were suitable local harvest times for FVC preparation Room temperature storage for 30 mo dramatically reduced the abundance of potent odorants and FVC scent intensity, while cold temperature (4 °C) storage was able to maintain FVC clarity and scent intensity. Our findings should be helpful at improving FVC quantity, quality, and storage.

Food Chemistry published new progress about Essential oils Role: ANT (Analyte), ANST (Analytical Study). 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Application In Synthesis of 140-11-4.

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