Esters-buliding-blocks

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

Liu, Aiyao published the artcileSelectfluor-promoted twofold sulfination of alcohols for synthesis of sulfinic ester from diaryldisulfides, Name: Ethyl 2-hydroxyacetate, the main research area is diaryl disulfide alc Selectfluor oxidative sulfination; alkyl arylsulfinate preparation.

An oxidative two-fold sulfination of alc. with Selectfluor as an efficient oxidant was developed. This reaction proceeded smoothly achieving the unprecedented sulfination transformation of varieties of diaryldisulfides and alcs. under simple conditions, affording the corresponding sulfinic esters in excellent yields. The current reaction provided a new and convenient strategy for the preparation of sulfinic esters.

Youji Huaxue published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 623-50-7 belongs to class esters-buliding-blocks, name is Ethyl 2-hydroxyacetate, and the molecular formula is C4H8O3, Name: Ethyl 2-hydroxyacetate.

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

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

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

Huang, Zijun published the artcileBifunctional ligand enabled selective alkoxycarbonylation of aliphatic alkenes, Quality Control of 123-29-5, the main research area is branched ester preparation regioselective; alkene alc Markovnikov alkoxycarbonylation carbazole derived phosphine ligand catalyst.

Carbazole derived phosphine ligands containing pyridine moiety were designed and prepared It allows the challenging Pd-catalyzed Markovnikov-selective alkoxycarbonylation of aliphatic alkenes to give the branched ester products (28 examples; 51-97% branch selectivity). Preliminary mechanistic studies support that the bridging bromide between Pd and Mn centers is crucial for the enhancement of regioselectivity.

Journal of Catalysis 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, Quality Control of 123-29-5.

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

Cebular, Klara published the artcile1,3-dibromo-5,5-dimethylhydantoin as a precatalyst for activation of carbonyl functionality, Synthetic Route of 111-11-5, the main research area is carboxylic acid alc dibromo dimethylhydantoin catalyst esterification; ester preparation green chem; aldehyde dibromo dimethylhydantoin catalyst aldol condensation regioselective; enal preparation green chem; 1,3-dibromo-5,5-dimethylhydantoin; alkyl acids; aryl acids; esterification; metal-free catalyst.

An advanced methodol. for the direct esterification of carboxylic acids and alcs., and for aldol condensation of aldehydes using widely available, inexpensive, and metal-free 1,3-dibromo-5,5-dimethylhydantoin under neat reaction conditions was reported. The method is air- and moisture-tolerant, allowing simple synthetic and isolation procedures for both reactions were studied. The reaction pathway for esterification was proposed and a scale-up of certain industrially important derivatives was performed.

Molecules 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, Synthetic Route of 111-11-5.

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

Osminski, Wynter E. G. published the artcileProbing Catalyst Function – Electronic Modulation of Chiral Polyborate Anionic Catalysts, Formula: C4H8O3, the main research area is aziridine synthesis aziridiation electronic modulation chiral polyborate catalyst.

Boroxinate complexes of VAPOL and VANOL are a chiral anionic platform that can serve as a versatile staging arena for asym. catalysis. The structural underpinning of the platform is a chiral polyborate core that covalently links together alcs. (or phenols) and vaulted biaryl ligands. The polyborate platform is assembled in situ by the substrate of the reaction, and thus a multiplex of chiral catalysts can be rapidly assembled from various alcs. (or phenols) and bis-phenol ligands for screening of catalyst activity. In the present study, variations in the steric and electronic properties of the phenol/alc. component of the boroxinate catalyst are probed to reveal their effects on the asym. induction in the catalytic asym. aziridination reaction. A Hammett study is consistent with a mechanism in which the two substrates are hydrogen-bonded to the boroxinate core in the enantiogenic step. The results of the Hammett study are supported by a computational study in which it is found that the H-O distance of the protonated imine hydrogen bonded to the anionic boroxinate core decreases with an increase in the electron releasing ability of the phenol unit incorporated into the boroxinate. The results are not consistent with a mechanism in which the boroxinate catalyst functions as a Lewis acid and activates the imine by a Lewis acid/Lewis base interaction.

Journal of Organic Chemistry published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 623-50-7 belongs to class esters-buliding-blocks, name is Ethyl 2-hydroxyacetate, and the molecular formula is C4H8O3, Formula: C4H8O3.

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

Lindroth, Rickard published the artcileHighly efficient direct visible-light-mediated oxidative esterification of aldehydes, Name: Methyl decanoate, the main research area is ester preparation; aldehyde ortho ester oxidative esterification catalyst indium triflate; alc aldehyde oxidative esterification catalyst indium triflate.

A very efficient one-pot procedure for the direct oxidation of aldehydes to esters RC(O)OR1 [R = Ph, cyclohexyl, 4-MeOC6H4, etc.; R1 = Me, Et, t-Bu, etc.] mediated by visible-light was presented. Utilizing a combination of indium triflate and N-bromosuccinimide, NBS, with either ortho-esters or alcs. provided rapid access to a variety of esters RC(O)OR1. Certain substrates convert fully within a few seconds, other more challenging tert-Bu esters RC(O)OR1 [R = 4-PhC6H4; R1 = t-Bu] were formed in good yield after no more than 4 h.

Photochemical & Photobiological Sciences 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, Name: Methyl decanoate.

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

Smeyne, Dylan published the artcileElectrochemical esterification via oxidative coupling of aldehydes and alcohols, Application In Synthesis of 583-04-0, the main research area is aldehyde alc oxidative coupling esterification electrochem.

An electrolytic method for the direct oxidative coupling of aldehydes with alcs. to produce esters is described. This method involves anodic oxidation in presence of TBAF as supporting electrolyte in an undivided electrochem. cell equipped with graphite electrodes. This method successfully couples a wide range of alcs. to benzaldehydes with yields ranging from 70 to 90%. The protocol is easy to perform at a constant voltage conditions and offers a sustainable alternative over conventional methods.

Tetrahedron Letters published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 583-04-0 belongs to class esters-buliding-blocks, name is Allyl benzoate, and the molecular formula is C10H10O2, Application In Synthesis of 583-04-0.

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