Tag: M.W=50-100

Thiyagarajan, Subramanian published the artcileRuthenium-Catalyzed α-Alkylation of Ketones Using Secondary Alcohols to β-Disubstituted Ketones, Application In Synthesis of 584-02-1, the main research area is Ruthenium pincer catalyzed alkylation ketone secondary alc.

An assortment of aromatic ketones was successfully functionalized with a variety of unactivated secondary alcs. that serve as alkylating agents, providing β-disubstituted ketone products in good to excellent yields. Remarkably, challenging substrates such as simple acetophenone derivatives are effectively alkylated under this ruthenium catalysis. The substituted cyclohexanol compounds displayed product-induced diastereoselectivity. Mechanistic studies indicate the involvement of the hydrogen-borrowing pathway in these alkylation reactions. Notably, this selective and catalytic C-C bond-forming reaction requires only a minimal load of catalyst and base and produces H2O as the only byproduct, making this protocol attractive and environmentally benign.

Organic Letters published new progress about Alkylation catalysts. 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, Application In Synthesis of 584-02-1.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Srinivasan, Anbalagan published the artcileGC-MS investigations of VOCs in South Indian honey samples as environmental biomarkers, HPLC of Formula: 584-02-1, the main research area is volatile organic compound honey biomarker gas chromatog mass spectrometry; Aroma profile; Carboxylic acids; Honey; Liquid–liquid extraction; Volatile organic compounds.

Natural honey is a viscous liquid composed of a supersaturated solution of glucose and fructose. Honeybees collect nectar and convert them into honey through biochem. reactions. These small creatures are the major contributors to pollination and food production for humans. At the same time, they are the worst victims of urbanization and irrational use of pesticides, insecticides, and other hazardous materials. Any disturbance to the existence of honeybees is a serious threat to the biodiversity. The quality of a honey sample is largely affected by the contamination of volatile organic compounds (VOCs) due to environmental pollution. The present study analyzes systemically 25 samples of honey harvested from the southern part of the Western Ghats for the probable existence of traces of toxic substances. The samples were subjected to a liquid-liquid extraction process, followed by gas chromatog.-mass spectrometry (GC-MS) to identify and characterize the hazardous substances/volatile organic compounds The results show the presence of nearly 540 VOCs and semi-VOCs comprising alcs., carboxylic acids, halogenated hydrocarbons, furan and pyran derivatives, and pyridine and pyrazine derivatives Malonic acid (0.01-0.18%), n-hexa decanoic acid (0.02-8.69%), 9-octa decanoic acid (0.03-4.01%), propanoic acid (1.01%), oleic acid (6.15%), and benzoic acid (1.48%) were found to be present in some of the samples. This investigation would pave the way to identifying the geog. location of floral honey based on the specific VOCs present in the samples.

Environmental Monitoring and Assessment published new progress about Aldehydes Role: ANT (Analyte), BSU (Biological Study, Unclassified), ANST (Analytical Study), BIOL (Biological Study). 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, HPLC of Formula: 584-02-1.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zribi, I. published the artcileGC-MS analysis of the volatile profile and the essential oil compositions of Tunisian Borago Officinalis L.: Regional locality and organ dependency, Name: 3-Pentanol, the main research area is Borago officinalis essential oil oxygenated monoterpene sesquiterpene GC MS.

Seeking to explore new local natural resources, volatile profile as well as essential oil compositions of Tunisian Borago officinalis L. were analyzed. The current study aims at investigating the effects of the geog. origin and the plant part (flowers, leaves, and rosettes leaves) on the volatile profile of Borago officinalis L. The aerial parts were collected from three bioclimate zones in Tunisia namely Tunis, Bizerte, and Zaghouan. The essential oils were extracted by hydro distillation The chem. composition of the latter was determined by gas chromatog. coupled to mass spectrometry. Furthermore, an exptl. procedure combining solid phase microextraction and gas chromatog. coupled to mass spectrometry was implemented to study the volatile profile of Borago officinalis L. It was set up to assess the influence of different plant organs obtained from various sites on the aromatic profile. Essential oil yields ranged from 0.14 ± 0.00% to 0.18 ± 0.01%. Benzenacetaldehyde was the major compound of the essential oils (7.11-9.16%). Chromatog. anal. revealed that the chem. compositions vary considerably from one region to another. The ones extracted from Bizerte and Zaghouan collections were characterized by the predominance of aldehydes (27.02% and 35.16%), followed by oxygenated monoterpenes (20.64% and 20.58%). The essential oils obtained from the third collection (Tunis) showed the predominance of oxygenated monoterpenes (27.23%), followed by aldehydes (23.93%) and oxygenated sesquiterpenes (12.22%). The aldehydes were identified as the major chem. class in the flowers volatile compounds dominated by octanal (13.32-16.42%) as well as in the leaves where nonanal was the major one (10.49-11.55%). In the rosettes aromatic profile, the oxygenated monoterpenes were the main chem. class with a percentage ranging from 39.45 to 46.64%. A relatively high content of acids (10.15%) was exclusively determined in Zaghouan flowers volatile profile. Principal Component Analyses and Hierarchical Clustering Analyses were pertinent tools to differentiate the volatile fractions. The findings showed a remarkable difference and significant variations in quality and quantity of the secondary metabolites.

Industrial Crops and Products published new progress about Aldehydes Role: ANT (Analyte), BSU (Biological Study, Unclassified), ANST (Analytical Study), BIOL (Biological Study). 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, Name: 3-Pentanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Chakraborty, Priyanka published the artcileα-Alkylation of Ketones with Secondary Alcohols Catalyzed by Well-Defined Cp*CoIII-Complexes, COA of Formula: C5H12O, the main research area is alkyl aryl ketone preparation; ketone secondary alc alkylation cobalt catalyst; alkylation; cobalt; ketones; secondary alcohols; α-alkylation.

Herein a well-defined, high-valence cobalt(III)-catalyst was applied for successful α-alkylation of ketones RC(O)CH3 (R = pentamethylphenyl, Ph, naphthalen-2-yl, etc.) and 1,2,3,4-tetrahydronaphthalen-1-one with secondary alcs. R1OH (R1 = 1-phenylethyl, cyclopentyl, octan-2-yl, etc.). A wide-variety of secondary alcs., which include cyclic, acyclic, sym., and unsym. compounds, was employed as alkylating agents to produce β-alkyl aryl ketones RC(O)CH2R1 and 2-(1-phenylethyl)-3,4-dihydronaphthalen-1(2H)-one.

ChemSusChem published new progress about Alkylation. 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, COA of Formula: C5H12O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Krause, Svenja published the artcileLipid oxidation during the beating of cake batter containing yellow pea (Pisum sativum L.) flour, Application In Synthesis of 584-02-1, the main research area is Pisum sativum flour cake batter lipid oxidation.

The aim of this study was to understand the impact of ingredients and processes on reactivity during sponge cake batter making using yellow pea flour. Numerous volatiles were identified, mainly originating from the degradation of linoleic and linolenic acid catalyzed by 10- and 13-lipoxygenases. The extent of lipid oxidation depended on the beating process, owing to the effect on local ingredient distribution and the exposure time of lipoxygenase to its substrates. Although prolonged beating after the addition of either flour or oil did not favor volatile formation, the latter led to elevated quantities of hydroperoxides. This intensified oxidation was assigned to an improved homogeneity and reduced size of lipid droplets and air cells. A sequential increase in both mixing times significantly increased the amount of volatiles, which could be attributed to a larger reaction interface and longer contact time between reactive ingredients. These results highlight the importance of parameter controls to limiting the generation of volatiles with odor activity.

LWT–Food Science and Technology published new progress about Aldehydes Role: ANT (Analyte), FFD (Food or Feed Use), ANST (Analytical Study), BIOL (Biological Study), USES (Uses). 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, Application In Synthesis of 584-02-1.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Dai, Caili published the artcileEffects of structural properties of alcohol molecules on decomposition of natural gas hydrates: A molecular dynamics study, Quality Control of 584-02-1, the main research area is effect structural property alc mol decomposition natural gas hydrate.

Natural gas hydrates, which are mainly distributed at the sea floor and in permafrost regions, are expected as a future but untapped energy resource. Design of effective chems. for promotion of the gas hydrate decomposition is one solution of achieving sustained and steady exploitation of natural gas hydrate. Among possible additives, alcs. are commonly used. However, the effectiveness is limited and few studies have been conducted to understand the effects of mol. structure of alcs. on the hydrate decomposition Here, with the aid of mol. dynamic simulations, we systematically investigate the effects of chain length, hydroxyl position and hydroxyl number of alcs. on the decomposition of methane hydrates. Combining variations of potential energy, radial distribution functions, and mean square displacement, the influences of alc. structural properties on the hydrate decomposition are evaluated. Simulation results show that 1-pentanol, 2-pentanol and 3-pentanol are added, methane hydrates decompose completely at 1420 ps, 1300 ps and 1500 ps resp. Alc. with short branched chains is conducive to promoting the decomposition of methane hydrate. However, adding methanol, ethanol, 1-propanol, 1,2-propanediol and glycerol, methane hydrates decompose completely at 1530 ps, 1650 ps,1700 ps, 1500 ps and 900 ps resp. and methane hydrate can’t completely decompose at 2000 ps adding 1-butanol. The result indicates that shortening the chain length of alcs. and increasing the hydroxyl number of alcs. are beneficial to improving the promotion effect on methane hydrate decomposition Our results thus provide useful guidelines for future design of alc.-based mols. for promoting gas hydrate decomposition

Fuel published new progress about Distribution function. 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, Quality Control of 584-02-1.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zhou, Jie published the artcileMetal-Organic Framework Based on Heptanuclear Cu-O Clusters and Its Application as a Recyclable Photocatalyst for Stepwise Selective Catalysis, COA of Formula: C5H12O, the main research area is preparation polynuclear copper disulfobiphenyldicarboxylate bipyridine phenanthroline MOF cluster; crystal structure polynuclear copper disulfobiphenyldicarboxylate bipyridine phenanthroline MOF cluster; thermal decomposition polynuclear copper disulfobiphenyldicarboxylate bipyridine phenanthroline MOF cluster; recyclable photocatalyst polynuclear copper disulfobiphenyldicarboxylate bipyridine phenanthroline MOF cluster.

Visible-light driven photoreactions using metal-organic frameworks (MOFs) as catalysts are promising with regard to their environmental friendly features such as the use of renewable and sustainable energy of visible light and potential catalyst recyclability. To develop potential heterogeneous photocatalysts, a family of three copper(II) coordination polymers bearing different Cu-O assemblies were synthesized with the ligand 4,4′-disulfo-[1,1′-biphenyl]-2,2′-dicarboxylate acid (H4DSDC), namely, {[Cu7(DSDC)2(OH)6(H2O)10]·xH2O}n (1), {[Cu4(DSDC)(4,4′-bpy)2(OH)4]·2H2O}n (2), and {Cu2(DSDC)(phen)2(H2O)2}n (3) (4,4′-bpy = 4,4′-bipyridine and phen = 1,10-phenanthroline). Complex 1 represents a metal-organic framework featuring a NbO type topol. constructed from the infinite linkage of heptanuclear [Cu7(μ3-OH)6(H2O)10]8+ clusters by deprotonated DSDC4- ligands, comprising one-dimensional hexagonal channels of a diameter around 11 Å that are filled with water mols. The infinite waving {[Cu2(OH)2]2+}n ladderlike chains in complex 2 are bridged by DSDC4- and 4,4′-bpy ligands into a three-dimensional framework. A two-dimensional layered structure is formed in complex 3 due to the existence of terminal phenanthroline ligands. All of the coordination polymers 1-3 are able to catalyze the visible-light driven oxidation of alcs. at mild conditions using hydrogen peroxide as an oxidant, in which complex 1 demonstrates satisfactory efficiency. Significantly for this photoreaction catalyzed by 1, the extent of oxidation over aryl primary alcs. is fully controllable with time-resolved product selectivity, giving either corresponding aldehydes or carboxylate acids in good yields. It is also remarkable that the photocatalyst could be recovered almost quant. on completion of the catalytic cycle without any structure change, and could be recycled for catalytic use for at least five cycles with constant efficiency. This photocatalyst with time-resolved selectivity for different products may provide new insight into the design and development of novel catalytic systems. A metal-organic framework featuring a NbO type topol. constructed from infinite linkage of heptanuclear [Cu7(μ3-OH)6(H2O)10]8+ clusters was fabricated, which can catalyze visible-light driven oxidation of alcs. at mild conditions, demonstrating satisfactory efficiency. The extent of oxidation over aryl primary alcs. is fully controllable with time-resolved product selectivity, giving either corresponding aldehydes or carboxylate acids in good yields. The photocatalyst can be recovered quant. on completion of the catalytic cycle and can be reused for at least five catalytic cycles with constant efficiency.

Inorganic Chemistry published new progress about Crystal structure. 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, COA of Formula: C5H12O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zhang, Zhengwei published the artcileEffect of package oxygen on color, color-related compounds, and volatile composition of Chinese bayberry wine after bottling, Quality Control of 584-02-1, the main research area is Myrica wine oxygen color bottling.

Package oxygen is an important factor for the wine quality during storage. However, its role in Chinese bayberry wine remains unclear. This study aimed to investigate the effect of package oxygen on color and volatile composition of Chinese bayberry wine. Wines with different package oxygen were anal. monitored (color parameters, pigments, non-volatile monomeric phenols, acetaldehyde, 5-hydroxymethylfurfural and volatile composition) during 90 days of accelerated storage at 37°C in dark. The result showed that high package oxygen accelerated the color deterioration, anthocyanin degradation, polymeric pigments formation, and acetaldehyde production The molar ratio of produced protocatechuic acid to degraded anthocyanin after storage increased from 5.08% to 25.14% as package oxygen increased. As the package oxygen increased, the concentration of total volatile esters and acids increased by up to 19.74% and 41.03%, resp. However, no significant effect of package oxygen was found on total volatile alcs., carbonyl compounds, and terpenes. The results suggest that package oxygen probably enhanced the scission more than the condensation of anthocyanin. Low package oxygen is beneficial to the color and some volatile compounds of Chinese bayberry wine.

LWT–Food Science and Technology published new progress about Bottling. 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, Quality Control of 584-02-1.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Huang, Mingming published the artcileBase-Mediated Radical Borylation of Alkyl Sulfones, COA of Formula: C5H12O, the main research area is borylation alkylsulfone preparation boronate neopentyl ester base catalyst; boron; boronate; boronic acid; metal-free; radical.

A practical and direct method was developed for the production of versatile alkyl boronate esters via transition metal-free borylation of primary and secondary alkyl sulfones. The key to the success of the strategy is the use of bis(neopentyl glycolato) diboron (B2neop2), with a stoichiometric amount of base as a promoter. The practicality and industrial potential of this protocol are highlighted by its wide functional group tolerance, the late-stage modification of complex compounds, no need for further transesterification, and operational simplicity. Radical clock, radical trap experiments, and EPR studies were conducted which show that the borylation process involves radical intermediates.

Chemistry – A European Journal published new progress about Borylation. 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, COA of Formula: C5H12O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Kong, Ying-Ying published the artcileIridium-Catalyzed α-Alkylation of Arylacetonitriles Using Secondary and Primary Alcohols, SDS of cas: 584-02-1, the main research area is alkylated arylacetonitrile green preparation; alc arylacetonitrile alpha alkylation iridium catalyst.

In the presence of NaOtBu, [Cp*IrCl2]2-catalyzed reaction of arylacetonitriles with alcs. was performed to yield α-monoalkylation products of arylacetonitriles such as I [R1 = (CH2)2CH3, (CH2)4CH3, CH2(CH2)2Ph, etc .; R2 = H, Ph; R1 = R2 = Me, Et; R1R2 = CH2(CH2)2CH2, CH2(CH2)3CH2, CH2(CH2)5CH2, etc.; Ar = Ph, 4-PhC6H4, 2-naphthyl, etc.]. The catalyst and conditions also suited for the α-monoalkylation of arylacetonitriles with primary alcs.

Asian Journal of Organic Chemistry published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, SDS of cas: 584-02-1.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts