Tag: M.W=300-350

Ding, Fengwei published the artcileAnalysis on volatile oil of Melia azedarach flowers by GC/MS, Application of Isobutyl palmitate, the publication is Shipin Yu Yaopin (2010), 12(3), 99-101, database is CAplus.

The constituents of volatile oils of Melia azedarach flowers were analyzed. The gas chromatog.-mass spectrometry (GC/MS) method was adopted. Seventy-four components of volatile oils were isolated and obtained. Among them, sixty-three components were identified. The volatile components of Melia azedarach flowers are mainly saturated alkanes, including hexadecanoic acid with the highest relative amount of 7.984% and octacosane with the lowest relative amount of 0.393%. This differs from the results in the previous report. The volatile components in different parts of Melia azedarach are also significantly different. Melia azedarach can be extracted and utilized on the basis of different parts.

Shipin Yu Yaopin published new progress about 110-34-9. 110-34-9 belongs to esters-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Ester, name is Isobutyl palmitate, and the molecular formula is C20H40O2, Application of Isobutyl palmitate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Barton, Derek H. R. published the artcileThe invention of radical reactions. Part XVIII. A convenient solution to the 1-carbon problem (R-CO₂H → R-¹³CO₂H), Application In Synthesis of 110-34-9, the publication is Tetrahedron (1988), 44(12), 3501-12, database is CAplus.

Radicals generated by photolysis (W light) of esters derived from N-hydroxy-2-thiopyridone react with electrophilic isocyanides PhCH₂CH₂NC and (in the presence of CF₃CO₂H)Me(CH₂)₄NC to give adducts of type R¹N:CRSC₅H₄N-2 (C₅H₄N-2 = 2-pyridyl). Convenient reaction procedures have been worked out to hydrolyze the adducts to amides of type RCONHR¹, from which the original acid RCO₂H can be regenerated under mild conditions. The three important acids oleic, linoleic and arachidonic have all given smooth reactions. In suitable examples, quant. evolution of CO₂ and incorporation of ¹³C without dilution have been demonstrated. This reaction sequence will be useful for the labeling in the carboxyl group of prostaglandins, leukotrienes, and the side chain carboxyls of peptides.

Tetrahedron published new progress about 110-34-9. 110-34-9 belongs to esters-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Ester, name is Isobutyl palmitate, and the molecular formula is C20H40O2, Application In Synthesis of 110-34-9.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Kawamorita, Soichiro published the artcileDirected Ortho Borylation of Functionalized Arenes Catalyzed by a Silica-Supported Compact Phosphine-Iridium System, Recommanded Product: Methyl 2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-4-(trifluoromethyl)benzoate, the publication is Journal of the American Chemical Society (2009), 131(14), 5058-5059, database is CAplus and MEDLINE.

An immobilized monophosphine-Ir system, which was prepared in situ from [Ir(OMe)(cod)]₂ and a silica-supported, compact phosphine, showed high activities and selectivities for the borylation of aromatic C-H bonds with bis(pinacolato)diboron. This system was effective not only for the borylation of benzene but also for the ortho borylation of arenes with directing groups, such as ester, amide, sulfonate, acetal, alkoxymethyl, and chloro groups, under mild reaction conditions.

Journal of the American Chemical Society published new progress about 1146214-86-9. 1146214-86-9 belongs to esters-buliding-blocks, auxiliary class Boronic acid and ester, name is Methyl 2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-4-(trifluoromethyl)benzoate, and the molecular formula is C15H18BF3O4, Recommanded Product: Methyl 2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-4-(trifluoromethyl)benzoate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Du, Yanhong published the artcileDetermination of aromatic compositions in Hongxing Erguotou Liquor by extraction coupled with GC-MS, Synthetic Route of 110-34-9, the publication is Niangjiu (2010), 37(2), 68-70, database is CAplus.

Aromatic composition in Hongxing Erguotou Liquor was identified using DI-SPME and liquid-liquid extraction followed by GC-MS. A total of 138 aroma compounds were identified including 16 alcs., 6 aldehydes, 16 acids, 49 esters, 7 aromatic compounds, 3 ketones, 3 furans, 1 pyrazines, 6 acetals and 31 other compounds The experiment results lay a foundation for further study of Hongxing Erguotou Liquor.

Niangjiu published new progress about 110-34-9. 110-34-9 belongs to esters-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Ester, name is Isobutyl palmitate, and the molecular formula is C20H40O2, Synthetic Route of 110-34-9.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Jiao, Jiao published the artcileA new air-stable Si,S-chelating ligand for Ir-catalyzed directed ortho C-H borylation, Synthetic Route of 1146214-86-9, the publication is Organic & Biomolecular Chemistry (2021), 19(2), 355-359, database is CAplus and MEDLINE.

A new air-stable Si,S-chelating ligand 1-(ⁱPrS)-2-(ⁱPr₂SiH)C₆H₄ (HL) has been developed and used in a directed ortho C-H borylation reaction of aromatic and heterocyclic compounds with B₂pin₂ catalyzed by [Ir(OMe)(cod)]₂/HL combination with a broad substrate scope, providing o-boryl-substituted aromatic and heterocyclic esters, amides and amines. This study provides the first example of using a sulfur-containing ligand in the catalytic C-H borylation process. It provides a rapid, efficient, and economical method for the preparation of organoboron compounds

Organic & Biomolecular Chemistry published new progress about 1146214-86-9. 1146214-86-9 belongs to esters-buliding-blocks, auxiliary class Boronic acid and ester, name is Methyl 2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-4-(trifluoromethyl)benzoate, and the molecular formula is C15H18BF3O4, Synthetic Route of 1146214-86-9.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Wierzbicki, Michael published the artcileEngineering an Escherichia coli platform to synthesize designer biodiesels, Computed Properties of 110-34-9, the publication is Journal of Biotechnology (2016), 27-34, database is CAplus and MEDLINE.

Biodiesels, fatty acid esters (FAEs), can be synthesized by condensation of fatty acid acyl CoAs and alcs. via a wax ester synthase in living cells. Biodiesels have advantageous characteristics over petrodiesels such as biodegradability, a higher flash point, and less emission. Controlling fatty acid and alc. moieties are critical to produce designer biodiesels with desirable physiochem. properties (e.g., high cetane number, low kinematic viscosity, high oxidative stability, and low cloud point). Here, we developed a flexible framework to engineer Escherichia coli cell factories to synthesize designer biodiesels directly from fermentable sugars. In this framework, we designed each FAE pathway as a biodiesel exchangeable production module consisting of acyl CoA, alc., and wax ester synthase submodules. By inserting the FAE modules in an engineered E. coli modular chassis cell, we generated E. coli cell factories to produce targeted biodiesels (e.g., fatty acid Et (FAEE) and iso-Bu (FAIbE) esters) with tunable and controllable short-chain alc. moieties. The engineered E. coli chassis carrying the FAIbE production module produced 54 mg/L FAIbEs with high specificity, accounting for >90% of the total synthesized FAEs and ∼4.7 fold increase in FAIbE production compared to the wildtype. Fed-batch cultures further improved FAIbE production up to 165 mg/L. By mixing ethanol and isobutanol submodules, we demonstrated controllable production of mixed FAEEs and FAIbEs. We envision the developed framework offers a flexible, alternative route to engineer designer biodiesels with tunable and controllable properties using biomass-derived fermentable sugars.

Journal of Biotechnology published new progress about 110-34-9. 110-34-9 belongs to esters-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Ester, name is Isobutyl palmitate, and the molecular formula is C38H24F4O4P2, Computed Properties of 110-34-9.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Inabata, Kenichiro published the artcileAnalysis of Volatile Compounds of Physalis, Computed Properties of 110-34-9, the publication is Koryo (2009), 45-49, database is CAplus.

The volatile compounds of Cape gooseberry and Chinese lantern plant were extracted with dichloromethane and analyzed by GC and GC/MS. A total of 137 components were identified in Cape gooseberry and 37 in Chinese lantern plant. It was suggested that the composition of components might contribute to the characteristic odor of them.

Koryo published new progress about 110-34-9. 110-34-9 belongs to esters-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Ester, name is Isobutyl palmitate, and the molecular formula is C20H40O2, Computed Properties of 110-34-9.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Xu, Huaide published the artcileChanges of aroma components in chaenomeles sinensis fruits during storage, SDS of cas: 110-34-9, the publication is Xibei Zhiwu Xuebao (2007), 27(3), 537-542, database is CAplus.

Aroma components were extracted by distillation and solvent extraction (SDE) at different storage time in Chaenomeles sinensis fruits. According to the anal. of GC-MS, esters and alkenes were increasing along with the storage time, but alcs., ketones and aldehydes were decreasing. At the beginning of the storage, the dominant aroma components in Chaenomeles sinensis fruits were 4-Methyl-5-penta-1,3-dienyltetrahydrofuran-2-one, 4-(2,6,6-Trimethylcyclohex-1-enyl)-butan-2-ol and (Z)-3-Hexen-1-ol. After 40 days storage at 8 degrees, the main components and their relative contents were alkenes (21.07%), esters (18.73%) and alcs. (16.34%). After 90 days storage, the relative content of Et esters of aliphatic acids significantly increased to 34.86%, among which the critical one was 3-Nonenoic acid, Et ester (21.67%). In addition, the relative content of α-Farnesene increased from 3.63% at the beginning of the storage to 35.22% after 90 days storage.

Xibei Zhiwu Xuebao published new progress about 110-34-9. 110-34-9 belongs to esters-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Ester, name is Isobutyl palmitate, and the molecular formula is C6H8N2O2S, SDS of cas: 110-34-9.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Pino, Jorge A. published the artcileVolatile Components from Mango (Mangifera indica L.) Cultivars, Category: esters-buliding-blocks, the publication is Journal of Agricultural and Food Chemistry (2005), 53(6), 2213-2223, database is CAplus and MEDLINE.

The volatile components of 20 mango cultivars were investigated by means of simultaneous distillation-extraction, GC, and GC-MS. Three hundred and seventy-two compounds were identified, of which 180 were found for the 1st time in mango fruit. The total concentration of volatiles was ∼18-123 mg/kg of fresh fruit. Terpene hydrocarbons were the major volatiles of all cultivars, the dominant terpenes being δ-3-carene (cvs. Haden, Manga amarilla, Macho, Manga blanca, San Diego, Manzano, Smith, Florida, Keitt, and Kent), limonene (cvs. Delicioso, Super Haden, Ordonez, Filipino, and La Paz), both terpenes (cv. Delicia), terpinolene (cvs. Obispo, Corazon, and Huevo de toro), and α-phellandrene (cv. Minin). Other qual. and quant. differences among the cultivars could be demonstrated.

Journal of Agricultural and Food Chemistry published new progress about 110-34-9. 110-34-9 belongs to esters-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Ester, name is Isobutyl palmitate, and the molecular formula is C20H40O2, Category: esters-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Lukic, Igor published the artcileSecondary aroma compounds in fresh grape marc distillates as a result of variety and corresponding production technology, Formula: C20H40O2, the publication is Food Technology and Biotechnology (2011), 49(2), 214-227, database is CAplus.

In order to investigate the composition of secondary aroma compounds of fresh grape marc distillates as a result of variety and production technol., 30 samples (6 varieties × 5 samples) were analyzed. White grape marc samples from Malvazija istarska, Chardonnay and Muscat Blanc were obtained as byproducts in standard white wine production, while red grape marc samples from Teran and Cabernet Sauvignon were obtained after standard red wine production procedures. Marc from red grape variety Muskat ruza porecki was obtained during the production of rose wines. All fermented marc samples were distilled using a traditional copper alembic. The obtained distillates were subjected to GC/MS and GC/FID analyses. Malvazija istarska distillates exhibited exceptionally high methanol content. Distillates from white grape varieties were found to be characterized by higher C₆ alc. and 1-propanol concentrations, while red grape distillates contained higher amounts of the majority of alcs., acids, and esters. In Muskat ruza distillates intermediate concentrations of many important aroma compounds were found. It was concluded that differences in the production technol. parameters, depending on the variety, resulted in differences in secondary aroma profiles, most evident between distillates from white and red varieties. These findings were confirmed applying stepwise linear discriminant anal. (SLDA), which resulted in 100 % correct classification of distillates according to the variety and corresponding production technol.

Food Technology and Biotechnology published new progress about 110-34-9. 110-34-9 belongs to esters-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Ester, name is Isobutyl palmitate, and the molecular formula is C20H40O2, Formula: C20H40O2.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics