Tag: M.W=150-200

Weng, Shidan; Fu, Xueqing; Gao, Yu; Liu, Tianlei; Sun, Yi; Tang, Dongqin published the artcile< Identification and Evaluation of Aromatic Volatile Compounds in 26 Cultivars and 8 Hybrids of Freesia hybrida>, SDS of cas: 78-70-6, the main research area is Freesia hybrida; VOCs; floral scent; heterosis; monoterpenes.

Freesia hybrida is a group of cultivars in the genus Freesia with a strong floral scent composed of diverse volatile organic compounds (VOCs). In this study, the VOCs of 34 F. hybrida were extracted and analyzed by headspace solid phase microextraction and gas chromatog. mass spectrometry (HS-SPME-GC-MS). A total of 164 VOCs whose relative contents were higher than 0.05% were detected. The numbers of VOCs in all germplasms differed between 11 to 38, and the relative contents ranged from 32.39% to 94.28%, in which most germplasms were higher than 80%. Terpenoids, especially monoterpenes, were the crucial type of VOCs in most germplasms, of which linalool and D-limonene were the most frequently occurring. Principal component anal. (PCA) clearly separated samples based on whether linalool was the main component, and hierarchical clustering anal. (HCA) clustered samples into 4 groups according to the preponderant compounds linalool and (E)-β-ocimene. Comparison of parental species and hybrids showed heterosis in three hybrids, and the inherited and novel substances suggested that monoterpene played an important role in F. hybrida floral scent. This study established a foundation for the evaluation of Freesia genetic resources, breeding for the floral aroma and promoting com. application.

Molecules published new progress about 78-70-6. 78-70-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C10H18O, SDS of cas: 78-70-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Palivec, Vladimir; Michal, Pavel; Kapitan, Josef; Martinez-Seara, Hector; Bour, Petr published the artcile< Raman Optical Activity of Glucose and Sorbose in Extended Wavenumber Range>, Synthetic Route of 492-62-6, the main research area is Raman optical activity glucose sorbose extended wavenumber range; CH stretching; Raman optical activity; density functional theory; saccharide structure; spectral modeling.

Raman optical activity (ROA) is pursued as a promising method for structural analyses of sugars in aqueous solutions In the present study, exptl. Raman and ROA spectra of glucose and sorbose obtained in an extended range (50-4000 cm-1) are interpreted using mol. dynamics and d. functional theory, with the emphasis on CH stretching modes. A reasonable theor. basis for spectral interpretation was obtained already at the harmonic level. Anharmonic corrections led to minor shifts of band positions (up to 25 cm-1) below 2000 cm-1, while the CH stretching bands shifted more, by ∼180 cm-1, and better reproduced the experiment However, the anharmonicities could be included on a relatively low approximation level only, and they did not always improve the harmonic band shapes. The dependence on the structure and conformation shows that the CH stretching ROA spectral pattern is a sensitive marker useful in saccharide structure studies.

ChemPhysChem published new progress about Anharmonic molecular vibration (Anharmonic corrections). 492-62-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Synthetic Route of 492-62-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Rezaei, Somaieh; Ghorbani-Choghamarani, Arash; Badri, Rashid; Nikseresht, Ahmad published the artcile< Fe3O4@S-ABENZ@VO: Magnetically separable nanocatalyst for the efficient, selective and mild oxidation of sulfides and oxidative coupling of thiols>, Category: alcohols-buliding-blocks, the main research area is sulfide hydrogen peroxide oxovanadium immobilized oxidation catalyst; sulfoxide preparation; thiol hydrogen peroxide oxovanadium immobilized oxidative coupling catalyst; disulfide preparation.

Oxovanadium(IV) immobilized on Fe3O4@S-ABEN is reported as a highly efficient nanocatalyst for the oxidation of sulfides and oxidative coupling of thiols (using H2O2 as green oxidant), the products of which are obtained in high to excellent yields. The products can be separated by a simple extraction with organic solvent and the catalyst is highly efficient, especially in terms of selectivity of desired product. The catalytic system can be recycled and reused without significant loss of catalytic activity.

Applied Organometallic Chemistry published new progress about Disulfides Role: SPN (Synthetic Preparation), PREP (Preparation). 699-12-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H10OS, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Li, Yahui; Bao, Gao; Wu, Xiao-Feng published the artcile< Palladium-catalyzed intermolecular transthioetherification of aryl halides with thioethers and thioesters>, Product Details of C8H10OS, the main research area is thioether aryl halide palladium catalyst thiomethylation; aryl thioether preparation; carbon monoxide thioether aryl halide palladium catalyst carbonylative thiomethylation; thioester aryl preparation.

A new palladium-catalyzed intermol. transthioetherification reaction of aryl halides with thioethers and thioesters was developed. The synthetic utility and practicality of this catalytic protocol were demonstrated in a wide range of successful transformations (>70 examples). This catalytic protocol was applicable in carbonylative coupling processes as well, and the first example of carbonylative methylthioesterification of aryl halides was achieved. Notably, this work also provided an approach to using natural products, such as methionine and selenomethionine, as the functional group sources.

Chemical Science published new progress about Aryl halides Role: RCT (Reactant), RACT (Reactant or Reagent). 699-12-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H10OS, Product Details of C8H10OS.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Emran, Mohammed Y.; Shenashen, Mohamed A.; El-Safty, Sherif A.; Reda, Abdullah; Selim, Mahmoud M. published the artcile< Microporous P-doped carbon spheres sensory electrode for voltammetry and amperometry adrenaline screening in human fluids>, Application of C6H12O6, the main research area is phosphorus carbon sphere sensory electrode voltammetry amperometry adrenaline human; Adrenaline; Biosensors; Electrochemical sensors/biosensors; Human serum; Nanoporous carbon; P-doped carbon spheres.

An electrochem. sensor-based phosphorus-doped microporous carbon spheroidal structures (P-MCSs) has been designed for selective adrenaline (ADR) signaling in human blood serum. The P-MCS electrode sensor is built with heterogeneous surface alignments including multiple porous sizes with open holes and meso-/macro-grooves, rough surface curvatures, and integral morphol. with interconnected and conjugated microspheres. In addition, the P atom-doped graphitic carbon forms highly active centers, increases charge mobility on the electrode surface, creates abundant active centers with facile functionalization, and induces binding to ADR mols. The designed P-MCS electrode exhibits ultrasensitive monitoring of ADR with a low detection limit of 0.002 μM and high sensitivity of 4330 μA μM-1 cm-2. In addition, two electrochem. techniques, namely, square wave voltammetry (SWV) and chronoamperometry (CA), were used; these techniques achieve high stability, fast response, and a wide linear range from 0.01 to 6 μM. The sensing assays based on P-MCSs provide evidence of the formation of active interfacial surface-to-ADR binding sites, high electron diffusion, and heavy target loads along with/without a plane of spheroids. Thus, P-MCSs can be used for the routine monitoring of ADR in human blood serum, providing a fast response, and requiring highly economical materials at extremely low concentrations Electrode surface modulation based on P-doped carbon spheres (P-MCS) exhibits high electrochem. activity with fast charge transport, multi-diffusible active centers, high loading of ADR, and facile mol./electron diffusion at its surface. The P-MCS sensitively and selectively detects the ADR in human fluids and can be used for clin. investigation of some neuronal diseases such as Alzheimer diseases.

Microchimica Acta published new progress about Adsorption. 492-62-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Application of C6H12O6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zhou, Qingqing; Ye, Man; Ma, Wenbao; Li, Difan; Ding, Bingjie; Chen, Manyu; Yao, Yefeng; Gong, Xueqing; Hou, Zhenshan published the artcile< Ionic Liquid Stabilized Niobium Oxoclusters Catalyzing Oxidation of Sulfides with Exceptional Activity>, Quality Control of 699-12-7, the main research area is ionic liquid stabilized niobium oxocluster catalyzing oxidation sulfide activity; hydrogen peroxide; oxidation; oxoclusters; peroxoniobium species; sulfides.

We present here a new class of niobium oxoclusters that are stabilized effectively by carboxylate ionic liquids These functionalized ILs are designated as [TBA][LA], [TBA][PA], and [TBA][HPA] in this work, in which TBA represents tetrabutylammonium and LA, PA, and HPA refer to lactate, propionate, 3-hydroxypropionate anions, resp. The as-synthesized Nb oxoclusters have been characterized by use of elemental anal., NMR, IR, XRD, TGA, HRTEM. It was found that [TBA][LA]-stabilized Nb oxoclusters (Nb-OC@[TBA][LA]) are uniformly dispersed with an average particle size of 2-3 nm and afforded exceptionally high catalytic activity for the selective oxidation of various thioethers. The turnover number with Nb-OC@[TBA][LA] catalyst was over 56 000 at catalyst loading as low as 0.0033 mol % (1 ppm). Meantime, the catalyst also showed the high activity for the epoxidation of olefins and allylic alcs. by using only 0.065 mol % of catalyst (50 ppm). The characterization of 93Nb NMR spectra revealed that the Nb oxoclusters underwent structural transformation in the presence of H2O2 but regenerated to their initial state at the end of the reaction. In particular, the highly dispersed Nb oxoclusters can absorb a large amount of polar organic solvents and thus were swollen greatly, which exhibited “”pseudo”” liquid phase behavior, and enabled the substrate mols. to be highly accessible to the catalytic center of Nb oxocluster units.

Chemistry – A European Journal published new progress about Alkenes Role: RCT (Reactant), RACT (Reactant or Reagent). 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

Fu, Zi-Hao; Tian, Hao-Dong; Ni, Shao-Fei; Wright, James S.; Li, Ming; Wen, Li-Rong; Zhang, Lin-Bao published the artcile< Scalable selective electrochemical oxidation of sulfides to sulfoxides>, SDS of cas: 699-12-7, the main research area is sulfoxide preparation green chem; sulfide scalable electrochem oxidation.

An electrochem. protocol for the selective oxidation of sulfides RSR1 (R = Ph, 2-bromophenyl, pyridin-2-yl, etc.; R1 = Me, 3-hydroxypropyl, cyclohexyl, etc.) and e.g., dibenzothiophene to sulfoxides RS(O)R1 and dibenzothiophene sulfoxide has been developed in NaCl that plays a dual role: (1) as an electrolyte for the electrochem. transformations and (2) as a redox mediator to avoid oxidation of sensitive functional groups. Instead of a traditional oxidant, this methodol. utilized traceless electrons as an ideal oxidant using anodic oxidation to access sulfoxides in good to excellent yields at ambient temperature This metal-free electrochem. protocol is simple, environmentally friendly, and compatible with various sensitive functional groups using mixed acetone/water as the green solvent. Moreover, the cost-effective graphite felt electrodes can be reused up to ten times without loss of electrochem. activity. The methodol. could be easily conducted on a gram or even a decagram scale.

Green Chemistry published new progress about Cyclic voltammetry. 699-12-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H10OS, SDS of cas: 699-12-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Xu, Lei; Li, Xiaofei; Zhang, Yumeng; Ding, Meng; Sun, Baoshan; Su, Guangyue; Zhao, Yuqing published the artcile< The effects of linalool acupoint application therapy on sleep regulation>, Category: alcohols-buliding-blocks, the main research area is sleep latency lavender linalool hypnotic sedative.

The Shenque acupoint is located in the umbilicus of the human body. In the human body meridians, the Shenque acupoint can regulate body functions. The Shenque acupoint was one of the important acupuncture acupoints for the treatment of insomnia. However, the effect of linalool applied at the Shenque acupoint to improve sleep was unknown. This study explored the hypnotic and sedative effects of the main component of lavender, linalool, on the Shenque acupoint of mice and rats. The effects on the sleep latency and sleep duration were studied with the supra-threshold dose of pentobarbital sodium, and the effects on the sleep rate were studied with the sub-threshold dose of pentobarbital sodium. In order to further study the feasibility and superiority of linalool administered at the Shenque acupoint, a pharmacokinetic study was carried out. The pharmacodynamic results showed that the mice and rats treated with linalool at Shenque had the highest sleep rate, the shortest sleep latency, and the longest sleep duration compared with other groups. The Tmax and t1/2 of the LS were longer than those of the LO, and had the characteristics of sustained release. The relative bioavailability of LS was 323.0 ± 31.66%. This showed that the combination of linalool and the Shenque acupoint had greater medicinal effects. This development will provide a new direction for improving sleep.

RSC Advances published new progress about Bioavailability. 78-70-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C10H18O, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Samaha, Hala; Chahine, Nathalie; Sobolev, Anatoly Petrovich; Menghini, Luigi; Makhlouf, Hassane published the artcile< 1H-NMR Metabolic Profiling and Antioxidant Activity of Saffron (Crocus sativus) Cultivated in Lebanon>, HPLC of Formula: 492-62-6, the main research area is Crocus sativus antioxidant cultivation NMR metabolic profiling; Lebanon; NMR; geographical classification; metabolic profiling; microwave-assisted extraction; saffron.

Despite the beneficial health properties shown by Lebanese saffron, its qual. and quant. composition has never been investigated before. In the present study, NMR spectroscopy, together with antioxidant activity assays, were applied to evaluate the chem. composition of saffron samples of different geog. origins (Lebanon, Italy, Iran, and India) and to categorize the Lebanese saffron for the first time. The distinction between Lebanese saffron and that produced in other countries was attributed to its higher linolenic and linoleic fatty acids, glucose and picrocrocin contents. Moreover, spices produced in three different regions of the Lebanese territory have been clearly differentiated. Saffron cultivated in the Qaa region displayed a high glucose, fatty acids and polyphenols content, whereas Hermel saffron exhibited the largest rate of picrocrocin and glycosylated carotenoids. Finally, samples from Baalbeck showed lower rates for the majority of metabolites. Moreover, Lebanese saffron showed a high antioxidant activity in ABTS and DPPH assays. A low dose of saffron extract (10 μg/mL) inhibited the growth of human lung adenocarcinoma cells, probably due to the high polyphenolic content. This study highlights the quality and peculiarity of Lebanese saffron cultivated in Northern Beqaa district and allows for a good discrimination between spices produced in relatively close territory.

Molecules published new progress about Antioxidants. 492-62-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, HPLC of Formula: 492-62-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Talukdar, Hiya; Gogoi, Sandhya Rani; Saikia, Gangutri; Sultana, Sazida Yasmin; Ahmed, Kabirun; Islam, Nashreen S. published the artcile< A sustainable approach towards solventless organic oxidations catalyzed by polymer immobilized Nb(V)-peroxido compounds with H2O2 as oxidant>, SDS of cas: 699-12-7, the main research area is peroxidoniobium complex immobilized polystyrene divinylbenzene resin catalyst preparation; epoxide preparation; styrene oxidation niobium catalyst; sulfone preparation; thioether oxidation niobium catalyst.

New heterogeneous catalysts comprising of peroxidoniobium(V) complexes immobilized on amino acid grafted cross-linked poly(styrene-divinylbenzene) resin was developed. Results of FTIR, Raman, NMR, XPS, XRD, EDX, SEM, BET, TGA, and elemental anal. confirmed the successful anchoring of triperoxidoniobium(V), [Nb(O2)3]- species to the host polymer via the pendant amino acid groups. The supported catalysts exhibited excellent performance in epoxidation of styrene and a range of cyclic and terpenic compounds under environmentally acceptable solvent-free condition, with aqueous H2O2 as oxidant. The catalytic protocols provided excellent conversion to the desired epoxide (up to 100%) with selectivity > 99%, TON as high as 1000, and high H2O2 utilization efficiency (92-97%). Moreover, the catalysts efficiently facilitated chemoselective solvent-free oxidation of a variety of thioethers to sulfones at room temperature Simple operational strategy, easy recyclability for multiple reaction cycles with the consistent activity-selectivity profile are the addnl. significant attributes of the developed catalytic processes.

Molecular Catalysis published new progress about Epoxides Role: SPN (Synthetic Preparation), PREP (Preparation). 699-12-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H10OS, SDS of cas: 699-12-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts