Category: alcohols-buliding-blocks

Kishore, Jugal published the artcileRuthenium(II)-catalyzed direct synthesis of ketazines using secondary alcohols, Application In Synthesis of 584-02-1, the main research area is ketazine preparation diastereoselective; secondary alc hydrazine hydrate oxygen hydrogen bond activation; ruthenium pincer complex catalyst.

Direct one-pot synthesis of ketazines (E,E)-R1R2C:NN:CR1R2 (R1 = Me, Et, Pr, etc.; R2 = C6H5, 4-MeC6H4, 2-MeOC6H4, etc.) from secondary alcs. R1R2CH(OH) and hydrazine hydrate catalyzed by a ruthenium pincer complex is reported, which proceeds through O-H bond activation of secondary alcs. via amine-amide metal-ligand cooperation in the catalyst. Remarkably, liberated mol. hydrogen and water are the only byproducts.

Chemical Communications (Cambridge, United Kingdom) published new progress about Azines Role: SPN (Synthetic Preparation), PREP (Preparation) (ketazines). 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

Eprintsev, Alexander T. published the artcileAconitate isomerase from maize leaves: Light-dependent expression and kinetic properties, SDS of cas: 97-67-6, the main research area is Zea leaf aconitate isomerase citrate malate; Aconitate isomerase; Citrate; Maize (Zea mays L.); Phytochrome; Trans-aconitate.

Aconitate isomerase (EC 5.3.3.7) interconverts cis- and trans-isomers of aconitic acid. Expression of the gene encoding this enzyme was studied in maize (Zea mays L.) leaves depending on light regime. Aconitate isomerase was induced by white and by red light indicating the involvement of phytochrome in the regulation of gene expression. The enzyme was partially purified from maize leaves. The value of Km was 0.75 mM with cis-aconitate and 0.92 mM with trans-aconitate, pH optimum was 8.0-8.2 with both substrates, citrate and malate suppressed its activity. It is concluded that aconitate isomerase actively participates in the interconversion of cis- and trans-aconitate in the light providing a possibility of using the pool of trans-aconitate for the regulation of the tricarboxylic acid cycle activity and mediating citrate/isocitrate supply for the biosynthetic and signaling purposes in photosynthetic cells.

Journal of Plant Physiology published new progress about cDNA Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 97-67-6 belongs to class alcohols-buliding-blocks, name is (S)-2-hydroxysuccinic acid, and the molecular formula is C4H6O5, SDS of cas: 97-67-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zhang, Kaizheng published the artcileAssessment of β-glucans, phenols, flavor and volatile profiles of hulless barley wine originating from highland areas of China, Application In Synthesis of 505-10-2, the main research area is barley wine glucan phenol flavor volatile profile; Flavor; Hulless barley wine; PCA; Phenols; β-Glucan.

Low alc. hulless barley wine (HW) is a popular beverage among the highland areas in China. It is known to have several health benefits due to the presence of β-glucan and antioxidant compounds Therefore, the total β-glucan content, total phenols and flavonoids of HW samples from the highland areas of Sichuan province and Tibet were determined in this study. The results indicated that HW is abundant in both β-glucan (54-76 mg/L) and phenolic compounds (131-178 mg/L). Moreover, this study also investigated the flavor and aroma characteristics of HW samples. A total of forty six volatile aroma substances were identified by GC-MS. The HWs could be classified into three distinct groups in terms of the region of origin according to the results of PCA based on the GC-MS data. These findings provide a useful foundation for further study of the health benefits and the flavor characteristics of HW in highland areas.

Food Chemistry published new progress about Alcohols Role: ANT (Analyte), PRP (Properties), ANST (Analytical Study). 505-10-2 belongs to class alcohols-buliding-blocks, name is 3-(Methylthio)propan-1-ol, and the molecular formula is C4H10OS, Application In Synthesis of 505-10-2.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Carbonnier, Maxime published the artcileAn experimental and modeling study of the oxidation of 3-pentanol at high pressure, Safety of 3-Pentanol, the main research area is pentanol oxidation high pressure.

High pressure oxidation of 3-pentanol is investigated in a jet-stirred reactor and in a shock tube. Experiments in the reactor were carried out at 10 atm, between 730 and 1180 K, for equivalence ratios of 0.35, 0.5, 1, 2, 4 and 1000 ppm fuel, at a constant residence time of 0.7 s. Reactant, product and intermediate species mole fractions were recorded using Fourier transform IR spectroscopy (FTIR) and gas chromatog. (GC). Ignition delay times were measured for 3-pentanol/O2 mixtures in argon in a shock tube at 20 and 40 bar, in a temperature range of 1000-1470 K and for equivalence ratios of 0.5, 1 and 2. The fuel did not show any low-temperature reactivity under these conditions in neither exptl. set-up and produced various aldehydes and ketones as well as the olefin 2-pentene as intermediates. A kinetic sub-mechanism is developed in order to represent the present data and analyze the reaction pathways.

Proceedings of the Combustion Institute published new progress about Aldehydes Role: TEM (Technical or Engineered Material Use), USES (Uses). 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, Safety of 3-Pentanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Reynard, Guillaume published the artcileEtherification of phenols by amines via transient diazonium intermediates, Related Products of alcohols-buliding-blocks, the main research area is phenol alkyl amine propanedinitrite etherification; alkyl phenyl ether preparation.

The synthesis of alkyl aryl ethers from electron poor phenols and amines using 1,3-propanedinitrite was described. Due to the mild conditions, functionalized primary, secondary and tertiary alkyl groups were successfully introduced, denoting a highly tolerant process that allowed for unprotected alcs. and acetals. The reaction was thought to proceeded through the formation of a diazonium intermediate that undergoes subsequent SN2> or SN1 reactions.

Canadian Journal of Chemistry published new progress about Alkyl aryl ethers Role: SPN (Synthetic Preparation), PREP (Preparation). 22483-09-6 belongs to class alcohols-buliding-blocks, name is 2,2-Dimethoxyethanamine, and the molecular formula is C4H11NO2, Related Products of alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Polshettiwar, Vivek published the artcileNano-organocatalyst: magnetically retrievable ferrite-anchored glutathione for microwave-assisted Paal-Knorr reaction, aza-Michael addition, and pyrazole synthesis, Name: 3-(1H-Pyrrol-1-yl)propan-1-ol, the main research area is Paal Knorr aza Michael pyrazole synthesis microwave glutathione nanocatalyst.

Postsynthetic surface modification of magnetic nanoparticles by glutathione imparts desirable chem. functionality and enables the generation of catalytic sites on the surfaces of ensuing organocatalysts. In this article, we discuss the developments, unique activity, and high selectivity of nano-organocatalysts for microwave-assisted Paal-Knorr reaction, aza-Michael addition, and pyrazole synthesis. Their insoluble character coupled with paramagnetic nature enables easy separation of these nano-catalysts from the reaction mixture using external magnet, which eliminates the requirement of catalyst filtration.

Tetrahedron published new progress about Amino acid esters Role: SPN (Synthetic Preparation), PREP (Preparation). 50966-69-3 belongs to class alcohols-buliding-blocks, name is 3-(1H-Pyrrol-1-yl)propan-1-ol, and the molecular formula is C7H11NO, Name: 3-(1H-Pyrrol-1-yl)propan-1-ol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Oliveira, Paulo Marcelo Rayner published the artcileExposure of Catasetum fimbriatum aerial roots to light coordinates carbon partitioning between source and sink organs in an auxin dependent manner, Formula: C4H6O5, the main research area is Catasetum aerial root carbon partitioning auxin organic acid light; Auxin; Carbon partitioning; Carbon sources; Catasetum; Light; Orchid; Roots.

Light energy is essential for carbon metabolism in plants, as well as controlling the transport of metabolites between the organs. While terrestrial plants have a distinct structural and functional separation between the light exposed aerial parts and the non-exposed roots, epiphytic plants, such as orchids, have shoots and roots simultaneously fully exposed to light. The roots of orchids differ mainly from non-orchidaceous plants in their ability to photosynthesize. Since the roots of Catasetum fimbriatum can synthesize auxin which is acropetally transported to the shoot region, we decided to investigate whether: (1) light treatment of C. fimbriatum roots raises the auxin levels in the plant; and (2) distinct auxin concentrations can change the source-sink relationships, altering the amounts of sugars and organic acids in leaves, pseudobulbs and roots. Among the organs studied, the roots accumulated the highest concentrations of indole-3-acetic-acid (IAA); and when roots were exposed to light, IAA accumulated in the leaves. However, when polar auxin transport (PAT) was blocked with N-(1-Naphthyl)phthalamic acid (NPA) treatment, a significant accumulation of sugars and organic acids occurred in the pseudobulbs and leaves, resp., suggesting that auxin flux from roots to shoots was involved in carbon partitioning of the aerial organs. Considering that C. fimbriatum plants lose all their leaves seasonally, it is possible the roots are a substituting influence on the growth and development of this orchid during its leafless period.

Plant Physiology and Biochemistry (Issy-les-Moulineaux, France) published new progress about Auxins Role: DGN (Diagnostic Use), BIOL (Biological Study), USES (Uses). 97-67-6 belongs to class alcohols-buliding-blocks, name is (S)-2-hydroxysuccinic acid, and the molecular formula is C4H6O5, Formula: C4H6O5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Das, Uttam Kumar published the artcileDehydrogenative Cross-Coupling of Primary Alcohols To Form Cross-Esters Catalyzed by a Manganese Pincer Complex, Category: alcohols-buliding-blocks, the main research area is primary alc manganese pincer complex catalyst dehydrogenative cross coupling; cross ester preparation.

Base-metal-catalyzed dehydrogenative cross-coupling of primary alcs. to form cross-esters as major products, liberating hydrogen gas, is reported. The reaction is catalyzed by a pincer complex of earth-abundant manganese in the presence of catalytic base, without any hydrogen acceptor or oxidant. Mechanistic insight indicates that a dearomatized complex is the actual catalyst, and indeed this independently prepared dearomatized complex catalyzes the reaction under neutral conditions.

ACS Catalysis published new progress about Carboxylic esters Role: SPN (Synthetic Preparation), PREP (Preparation). 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Diaz, Irina published the artcileCombined effects of sulfur dioxide, glutathione and light exposure on the conservation of bottled Sauvignon blanc, Category: alcohols-buliding-blocks, the main research area is Wine Oxidation Light exposure Antioxidants Storage; Antioxidants; Light exposure; Oxidation; Storage; Wine.

Oxygen exposure may trigger a series of changes that could be detrimental to the quality white wines. This study evaluated the combined effects of sulfur dioxide, glutathione and light exposure on the chem. and sensory perception of bottled Sauvignon blanc. The wines were manually bottled into clear bottles, closed with low oxygen transfer rate stoppers, and stored for three months, either exposed or protected from light. The wines exposed to artificial light showed higher rates of sulfite loss and oxygen consumption, were significantly darker in color, exhibited significant changes in the concentration of phenolics and volatile compounds, were perceived as less fruity/floral, and had higher nuances of solvent, earthy and honey aromas than the ones protected from light. The treatments with higher amounts of initial sulfites and glutathione were able to delay some of these changes but were less significant than protecting the wines from artificial light.

Food Chemistry published new progress about Polyphenols (nonpolymeric) Role: ANT (Analyte), ANST (Analytical Study). 505-10-2 belongs to class alcohols-buliding-blocks, name is 3-(Methylthio)propan-1-ol, and the molecular formula is C4H10OS, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Song, Qing-Wen published the artcileSelective Conversion of CO2 and Switchable Alcohols into Linear or Cyclic Carbonates via Versatile Zinc Catalysis, Recommanded Product: 3,5-Dimethylhex-1-yn-3-ol, the main research area is alc carbon dioxide zinc catalyst; carbonate preparation; dioxolanone preparation.

Herein, selective catalytic conversion of CO2 and switchable alc. candidates to produce linear or cyclic carbonates and α-hydroxy ketones via effective zinc catalyst was developed. A series of primary alcs. and cyclohexanol, 1,2-diols, and water can serve as nucleophiles to give alkyl or aryl 2-substituted-3-oxobutan-2-yl carbonates, substituted 1,3-dioxolan-2-ones, 3-substituted 3-hydroxybutan-2-ones, resp. with excellent selectivity and high yields.

Synthesis published new progress about Alcohols, unsaturated Role: RCT (Reactant), RACT (Reactant or Reagent). 107-54-0 belongs to class alcohols-buliding-blocks, name is 3,5-Dimethylhex-1-yn-3-ol, and the molecular formula is C8H14O, Recommanded Product: 3,5-Dimethylhex-1-yn-3-ol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts