Tag: M.W=150-200

Tamoradi, Taiebeh; Ghadermazi, Mohammad; Ghorbani-Choghamarani, Arash published the artcile< Ni(II)-Adenine complex coated Fe3O4 nanoparticles as high reusable nanocatalyst for the synthesis of polyhydroquinoline derivatives and oxidation reactions>, Recommanded Product: 2-(Phenylthio)ethanol, the main research area is sulfoxide disulfide polyhydroquinoline preparation green chem; nickel complex immobilized adenine magnetic nanoparticle preparation oxidation catalyst.

In the present study, Fe3O4 nanoparticles were prepared via simple and versatile procedure. Then, a novel and green catalyst was synthesized by the immobilization of Ni on Fe3O4 nanoparticles coated with adenine. The activity of this nanostructure compound was examined for the oxidation of sulfides, oxidative coupling of thiols and synthesis of polyhydroquinolines. The prepared catalyst was characterized by Fourier transform IR spectroscopy (FT-IR), SEM (SEM), energy-dispersive X-ray spectroscopy (EDS), inductively coupled plasma optical emission spectroscopy (ICP-OES), X-ray Diffraction (XRD), thermal gravimetric anal. (TGA), and vibrating sample magnetometer (VSM) measurements. This organometallic catalyst was recovered by the assistance of an external magnetic field from the reaction mixture and reused for seven continuous cycles without noticeable change in its catalytic activity.

Applied Organometallic Chemistry published new progress about Aryl aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 699-12-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H10OS, Recommanded Product: 2-(Phenylthio)ethanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Papanastasiou, Stella A.; Ioannou, Charalampos S.; Papadopoulos, Nikos T. published the artcile< Oviposition-deterrent effect of linalool - a compound of citrus essential oils - on female Mediterranean fruit flies, Ceratitis capitata (Diptera: Tephritidae)>, COA of Formula: C10H18O, the main research area is Citrus Malus Ceratitis oviposition essential oil linalool; egg-laying; host; medfly; repellent effect.

We tested whether different linalool concentrations, application methods on fruit hosts and time since application elicited oviposition-deterrence on medfly, from bitter oranges, apples and nectarines, under constant laboratory conditions. We also tested possible repellent properties of linalool on adult medflies in field conditions. Females drilled fewer oviposition stings and deposited fewer eggs per fruit in all linalool-treated hosts. Spraying and topical-droplet application were the most efficient methods on bitter oranges, although spraying was the least effective method in apples. Bitter oranges and nectarines that were offered to females immediately post-exposure to linalool received more oviposition stings and eggs than those offered 3 days post-exposure to linalool solutions Conversely, apples tested 3 days following linalool application received significantly more oviposition stings and eggs than those tested immediately and 1 day post-exposure. More adults in total, and more females, were captured in traps located on untreated-control than on linalool-treated trees, especially in citrus hosts. Linalool has a potential future use in environmentally friendly control strategies against C. capitata.

Pest Management Science published new progress about Apple. 78-70-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C10H18O, COA of Formula: C10H18O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Liu, Dongliang; Thomas, Tiju; Gong, Hong; Li, Fei; Li, Qiang; Song, Lijuan; Azhagan, Tamil; Jiang, Heng; Yang, Minghui published the artcile< A mechanism of alkali metal carbonates catalysing the synthesis of β-hydroxyethyl sulfide with mercaptan and ethylene carbonate>, Recommanded Product: 2-(Phenylthio)ethanol, the main research area is alkyl mercaptan dioxolanone potassium carbonate catalyst ring opening hydroxyethylation; hydroxyethyl alkyl sulfide preparation green chem.

A new and green route to synthesize 2-hydroxyethyl n-alkyl sulfide with n-alkyl mercaptan and ethylene carbonate (EC) in the presence of alkali carbonates as catalysts and revealed the mechanism by experiments and theor. calculations The reaction reported proceeded rapidly with high yields when it was performed at 120° C and the catalytic loading is ∼1 mol%. This protocol was applicable to other mercaptans to synthesize the corresponding β-hydroxyethyl sulfide. D. functional theory-based calculations show the energy profile for the reaction pathway. The rate-determining step is the ring-opening of EC. A neg. charged O atom of alkali carbonates approached the S atom of -SH under the influence of hydrogen bonds. An activated S atom that carried more neg. charge serves as a nucleophilic reagent and assists in the ring-opening of EC by reducing the Mayer bond orders of the C1-O1 bond in EC. Alkali cations also contribute to the C1-O1 bond cleavage. The energy barrier for the ring-opening of EC decreases with the decrease of electronegativity of alkali cations. Subsequent transference of a H atom led to the formation of β-hydroxyethyl sulfide, the dissociation of CO2 and the reduction of K2CO3.

Organic & Biomolecular Chemistry published new progress about Electrostatic potential energy surface. 699-12-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H10OS, Recommanded Product: 2-(Phenylthio)ethanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Blasius, Jan; Elfgen, Roman; Holloczki, Oldamur; Kirchner, Barbara published the artcile< Glucose in dry and moist ionic liquid: vibrational circular dichroism, IR, and possible mechanisms>, Electric Literature of 492-62-6, the main research area is ethyl methylimidazolium acetate glucose hydrogen bond IR spectra.

Ionic liquids and their mixtures with water show remarkable features in cellulose processing. For this reason, understanding the behavior of carbohydrates in ionic liquids is important. In the present study, we investigated three D-glucose isomers (α, β and open-chain) in 1-ethyl-3-methylimidazolium acetate in the presence and absence of water, through ab initio mol. dynamics simulations. In the complex hydrogen bonding network of these mixtures, the most interesting observation is that upon water addition every hydrogen bond elongates, except the glucose-glucose hydrogen bond for the open-chain and the α-form which shortens, clearly showing the beginning of the crystallization process. The ring glucose rearranges from on-top to in-plane and the open form changes from a coiled to a more linear arrangement when adding water which explains the contradiction that the center of mass distances of the glucose mols. with other glucose mols. grow while the hydrogen bonds shorten. The appearance of coiled open forms indicates that the previously suggested isomerization between these forms is possible and might play a role in the solubility of the related carbohydrates. The calculated IR and VCD spectra reveal insight into the intermol. interactions, with good to excellent agreements with exptl. spectra. Investigating the role of the cation, distances between the acidic carbon atom of the cation and the glucose carbon atom where ring closure and opening occurs are found, which are way shorter than dispersion-like interactions between aliphatic hydrocarbons.

Physical Chemistry Chemical Physics published new progress about Bending vibration. 492-62-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Electric Literature of 492-62-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Ye, Guangying; Li, Jie; Zhang, Jinhui; Liu, Hailin; Ye, Qingsheng; Wang, Zaihua published the artcile< Structural characterization and antitumor activity of a polysaccharide from Dendrobium wardianum>, Electric Literature of 3458-28-4, the main research area is erlotinib hydrochloride Dendrobium anticancer agent lung cancer; Acetylated glucomannan lung cancer cells; Anti-tumour activity; Dendrobium wardianum; Polysaccharide characteristics.

Through hot water extraction, protein removal and chromatog. purification, DWPP-Is was found to be the major polysaccharide present in the stem of D. wardianum. The Mn and Mw of DWPP-Is were 29.0 kDa and 98.6 kDa, resp. Furthermore, mannose and glucose were found to be the most abundant monosaccharides in DWPP-Is. Their backbones consist of (1 → 4)-β-D-Glcp and O-acetylated (1 → 4)-β-D-Manp, which are similar to the structures of other anti-tumor Dendrobium polysaccharides. The inhibition rate of DWPP-Is treatment on SPC-A-1 cells (2 mg/mL, 72 h) reached 56.0%. Intragastric administration of DWPP-Is on A549 tumor-bearing KM mice (10 mg/mL, 0.2 mL) exhibited similar inhibition ratios to that of erlotinib hydrochloride (2 mg/mL). Moreover, the highest inhibition was observed in P-CK treatment combined with DWPP-Is, reaching an inhibition rate of 23.4%. These results suggest that DWPP-Is has the potential to be a functional agent for lung cancer prevention.

Carbohydrate Polymers published new progress about Antitumor agents. 3458-28-4 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Electric Literature of 3458-28-4.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Tyagi, Kamal; Maoz, Itay; Vinokur, Yakov; Rodov, Victor; Lewinsohn, Efraim; Lichter, Amnon published the artcile< Enhancement of table grape flavor by postharvest application of monoterpenes in modified atmosphere>, Name: 3,7-Dimethylocta-1,6-dien-3-ol, the main research area is postharvest monoterpene modified atm ethanol linalool geraniol.

Consumers expect ready-to-eat grapes to have excellent quality and flavor. In practise, most table grape cultivars have a neutral flavor relying mainly on the combination of sugar and acidity due to limited levels of volatiles that impart the unique aromas. This study investigated the possibility of improving grape flavor by incubating the berries in monoterpene-enriched modified atm. The berries were sanitized by dipping in ethanol and packaged in trays sealed with plastic films of different perforation levels. The optimal conditions selected for further study were one micro-perforation per package containing 250 g berries and storage at 5°C for 2 wk. To test the possibility of improving grape flavor during storage, berries of the cultivars Flame Seedless, Adominique, 4111 and Crimson Seedless were stored in the presence of the monoterpenes linalool or geraniol. After two weeks of storage in the presence of linalool, it accumulated in the berries to levels of 551, 704 and 3273μg kg-1 in Adominique, 4111 and Crimson Seedless, resp. Application of linalool or geraniol resulted in appearance of many other monoterpenes, probably by the action of endogenous enzymes. Organoleptic preference assays indicated that berries of Adominique and 4111 stored in the presence of linalool were favored over the control berries. Overall, the results demonstrate the feasibility of using monoterpenes to enhance berry flavor during storage.

Postharvest Biology and Technology published new progress about Monoterpenes Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 78-70-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C10H18O, Name: 3,7-Dimethylocta-1,6-dien-3-ol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Sebastiana, M.; Gargallo-Garriga, A.; Sardans, J.; Perez-Trujillo, M.; Monteiro, F.; Figueiredo, A.; Maia, M.; Nascimento, R.; Silva, M. Sousa; Ferreira, A. N.; Cordeiro, C.; Marques, A. P.; Sousa, L.; Malho, R.; Penuelas, J. published the artcile< Metabolomics and transcriptomics to decipher molecular mechanisms underlying ectomycorrhizal root colonization of an oak tree>, Computed Properties of 492-62-6, the main research area is metabolomic transcriptomic decipher mol mechanism ectomycorrhizal root colonization oak.

Mycorrhizas are known to have a pos. impact on plant growth and ability to resist major biotic and abiotic stresses. However, the metabolic alterations underlying mycorrhizal symbiosis are still understudied. By using metabolomics and transcriptomics approaches, cork oak roots colonized by the ectomycorrhizal fungus Pisolithus tinctorius were compared with non-colonized roots. Results show that compounds putatively corresponding to carbohydrates, organic acids, tannins, long-chain fatty acids and monoacylglycerols, were depleted in ectomycorrhizal cork oak colonized roots. Conversely, non-proteogenic amino acids, such as gamma-aminobutyric acid (GABA), and several putative defense-related compounds, including oxylipin-family compounds, terpenoids and B6 vitamers were induced in mycorrhizal roots. Transcriptomic anal. suggests the involvement of GABA in ectomycorrhizal symbiosis through increased synthesis and inhibition of degradation in mycorrhizal roots. Results from this global metabolomics anal. suggest decreases in root metabolites which are common components of exudates, and in compounds related to root external protective layers which could facilitate plant-fungal contact and enhance symbiosis. Root metabolic pathways involved in defense against stress were induced in ectomycorrhizal roots that could be involved in a plant mechanism to avoid uncontrolled growth of the fungal symbiont in the root apoplast. Several of the identified symbiosis-specific metabolites, such as GABA, may help to understand how ectomycorrhizal fungi such as P. tinctorius benefit their host plants.

Scientific Reports published new progress about Alkaloids Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 492-62-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Computed Properties of 492-62-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Tamoradi, Taiebeh; Ghorbani-Choghamarani, Arash; Ghadermazi, Mohammad published the artcile< Synthesis of new zirconium complex supported on MCM-41 and its application as an efficient catalyst for synthesis of sulfides and the oxidation of sulfur containing compounds>, Quality Control of 699-12-7, the main research area is sulfide preparation oxidation adenine zirconium nanocatalyst green chem; thiol oxidative coupling adenine zirconium nanocatalyst green chem.

The synthesis of new zirconium complex supported on mesoporous silica by anchoring of adenine on the wall of functionalized MCM-41 and then reacted with ZrOCl2 was described. The resultant MCM-41-Adenine-Zr was characterized by FT-IR, XRD, TEM, SEM, TGA, EDX, ICP and BET techniques. It was exhibited that the MCM-41-Adenine-Zr can be used as an efficient and thermally stable nanocatalyst for the oxidation of sulfides such as dipropylsulfide, tetrahydrothiophene, benzylphenylsulfide, etc.; oxidative coupling of thiols such as naphthalene-2-thiol, benzo[d]thiazole-2-thiol, benzo[d]oxazole-2-thiol, etc. and synthesis of sulfides such as 1,1′-thiobis(2-methoxy)-benzene, 1,1′-thiobis-benzene, 1,1′-thiobis(4-nitro)-benzene. Moreover, this heterogeneous catalyst can be easily recovered from the reaction mixture by simple filtration and reused for several consecutive cycles without noticeable change in its catalytic activity.

Applied Organometallic Chemistry published new progress about Green chemistry. 699-12-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H10OS, Quality Control of 699-12-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Hui, Heping; Li, Xiuzhuang; Jin, Hui; Yang, Xiaoyan; Xin, Aiyi; Zhao, Ruiming; Qin, Bo published the artcile< Structural characterization, antioxidant and antibacterial activities of two heteropolysaccharides purified from the bulbs of Lilium davidii var. unicolor Cotton>, Application In Synthesis of 3458-28-4, the main research area is Lilium bulb heteropolysaccharide antioxidant antibacterial; Antioxidant and antibacterial activity; Heteropolysaccharides; Lilium davidii var. unicolor Cotton; Structural characterization.

Two heteropolysaccharides, BHP-1 and BHP-2, were separated and purified from the edible bulbs of Lilium davidii var. unicolor Cotton by anion-exchange and gel-permeation chromatog. The primary structural characteristics of BHP-1 and BHP-2 were investigated by Congo red test, X-ray diffractometry (XRD) anal., IR, GC and NMR. The results showed that the weight-average mol. weight (MW) and number-average mol. weight (Mn) of BHP-1 and BHP-2 were nearly 1.93 × 105 g/moL, 8.86 × 104 g/moL and 3.52 × 104 g/moL, 2.95 × 104 g/moL, resp. Glucose and mannose comprised BHP-1 in a relative molar ratio of 5.9:2.0, and BHP-2 was consisted of glucose, galactose, mannose and arabinose with approx. molar ratios of 8.3:1.5:1.0:1.1. Their backbone mainly contained α-(1 → 4)-linked D-glucopyranosyl. In addition, the C-6 of the glucose and C-2 of mannose residue of BHP-1 and BHP-2 were substituted. The two polysaccharides were semi-crystalline substance with multi-branching structure and triple helix conformation. Bioassays showed that BHP-1 and BHP-2 had effective antioxidant activities evaluated by DPPH, scavenging superoxide radical and OH radical in a dose-dependent manner. The two heteropolysaccharides also displayed distinct and selective antibacterial activity against B. cereus, P. putida, M. luteus and K. pneumonia with inhibition zones of 13 mm, 16 mm, 17 mm, 23 mm and 12 mm, 17 mm, 19 mm, 20 mm, resp. These findings provided a reference for potential applications of the polysaccharides from L. davidii as natural antioxidants and antibacterial agents in food and pharmaceuticals.

International Journal of Biological Macromolecules published new progress about Anomers. 3458-28-4 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Application In Synthesis of 3458-28-4.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Minozzi, Clementine; Grenier-Petel, Jean-Christophe; Parisien-Collette, Shawn; Collins, Shawn K. published the artcile< Photocatalyic Appel reaction enabled by copper-based complexes in continuous flow>, Name: 2-(Phenylthio)ethanol, the main research area is aliphatic alc copper photocatalyst Appel reaction continuous flow; alkylbromide preparation; carboxylic acid copper catalyst photochem reaction continuous flow; anhydride preparation; Appel; continuous flow; copper; halides; photocatalysis.

A copper-based photocatalyst, Cu(tmp)(BINAP)BF4, was found to be active in a photoredox Appel-type conversion of alcs. to bromides. The catalyst was identified from a screening of 50 complexes and promoted the transformation of primary and secondary alcs. to their corresponding bromides and carboxylic acids to their anhydride. The protocol was also amendable and optimized under continuous flow conditions.

Beilstein Journal of Organic Chemistry published new progress about Aliphatic alcohols Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 699-12-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H10OS, Name: 2-(Phenylthio)ethanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts