Month: October 2022

Albrecht, Ute; Tripathi, Indu; Kim, Hoyoun; Bowman, Kim D. published the artcile< Rootstock effects on metabolite composition in leaves and roots of young navel orange (Citrus sinensis L. Osbeck) and pummelo (C. grandis L. Osbeck) trees>, Safety of D-Glucosaccharic acid, the main research area is Citrus leaf root metabolite composition rootstock.

Proper selection of rootstocks in tree fruit crops such as citrus is important for successful production Despite a large number of com. available rootstocks, studies have mostly been limited to basic horticultural observations. We used untargeted gas chromatog.-time of flight-mass spectrometry (GC-TOF MS) based metabolomics to understand the biochem. influence of rootstock on 2-yr-old field-grown ‘Cara Cara’ navel orange (Citrus sinensis L. Osbeck) and ‘Hirado Buntan’ pummelo (C. grandis L. Osbeck) trees grown on four rootstock cultivars with different genetic background. Five hundred unique metabolites were quantified in all trees, of which 147 were chem. identified. In navel orange trees, 48 root metabolites differed significantly in concentrations among rootstocks, compared with 29 metabolites in pummelo trees. In navel orange trees, raffinose, conduritol beta-epoxide, allantoic acid, myo-inositol, gamma-tocopherol, and beta gentiobiose were among the compounds that contributed most to this variation. In pummelo trees, hexitol, allantoic acid, glucoheptulose, tryptophan, gamma-tocopherol, glycerol-3-galactoside, and raffinose were among the most discriminating metabolites, but only allantoic acid passed significance criteria. Rootstock was also found to influence the quantities of 226 metabolites in leaves of the navel orange scion. Conduritol-beta-epoxide and myo-inositol were among the metabolites most influenced by rootstock. In contrast, the influence of rootstock on the pummelo scion was less prominent, with only six metabolites displaying significant differences. Our findings demonstrate that rootstock variety can influence the metabolic profile of the leaves in a grafted tree, but that the extent of the effect is also influenced by the scion. The majority of root metabolites that discriminated most between rootstocks did not display the same rootstock-specific discrimination in the leaves, suggesting tissue specificity or limited movement across the graft union.

Trees (Heidelberg, Germany) published new progress about Citrus grandis. 87-73-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H10O8, Safety of D-Glucosaccharic acid.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Liu, Ruzhang; Zhang, Yuanyuan; Xu, Jun published the artcile< Selective hydroboration of equilibrating allylic azides>, Electric Literature of 627-27-0, the main research area is azido boronic ester preparation pinacolborane oxidation; allylic azide hydroboration iridium catalyst.

The iridium(I)-catalyzed hydroboration of equilibrating allylic azides RCH:CHCH2N3 (R = pentyl, cyclohexylmethyl, 3-(pyrrol-1-yl)propyl, etc.) is reported to provide only the anti-Markovnikov products RCH(N3)CH2CH2OH of alk-1-ene isomers RCH(N3)CH:CH2 in good yields and with good functional group tolerance.

Chemical Communications (Cambridge, United Kingdom) published new progress about Alcohols Role: SPN (Synthetic Preparation), PREP (Preparation) (azido-). 627-27-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C4H8O, Electric Literature of 627-27-0.

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

Nezam, Iman; Peereboom, Lars; Miller, Dennis J. published the artcile< Continuous condensed-phase ethanol conversion to higher alcohols: Experimental results and techno-economic analysis>, Name: 2-Ethylhexan-1-ol, the main research area is alumina supported nickel lanthanum oxide catalyst; ethanol conversion higher alc technoeconomic analysis.

The conversion of ethanol to n-butanol and higher alcs. is carried out in a continuous fixed bed reactor over a Ni/La2O3/γ-Al2O3 catalyst at 210-250°C and 100 bar. At these conditions, the reaction mixture is a condensed, near-critical phase that facilitates higher reaction rates than corresponding vapor phase reactions. Combined selectivity to n-butanol and C6+ higher alcs. reached 74% at 41% ethanol conversion. A process concept is presented in which n-butanol and mixed C6+ alcs. are produced as saleable products; ethanol is recycled to achieve nearly 100% overall conversion and minor byproducts are burned to provide process energy. A process design is conducted using aspen plus V8.4 process simulation software and economic analyses are carried out for several cases of ethanol conversion and alcs. selectivities. Several addnl. cases involving permutations of the base process configuration are also examined in attempts to improve process economics. At n-butanol selectivities achieved exptl., a facility producing 75 million kg n-butanol per yr has a total capital cost of 8.1 million with a required n-butanol selling price of .55/kg to .60/kg for typical values of expected return on investment.

Journal of Cleaner Production published new progress about Aliphatic alcohols Role: IMF (Industrial Manufacture), PREP (Preparation). 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, Name: 2-Ethylhexan-1-ol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Jin, Bei; Wang, Jinguo; Xu, Fengxia; Li, Dianfeng; Men, Yong published the artcile< Hierarchical hollow WO3 microspheres with tailored surface oxygen vacancies for boosting photocatalytic selective conversion of biomass-derived alcohols>, Category: alcohols-buliding-blocks, the main research area is ierarchical hollow WO3 microspheres tailored surface oxygen vacancies; photocatalytic selective conversion biomass derived alc.

Selective conversion of biomass-derived alcs. into carbonyl compounds via visible-light photocatalysis is realized over hierarchical hollow WO3 microspheres with tailored surface oxygen vacancies, which presents the remarkably boosted photoactivity in terms of selectivity and activity, intrinsically attributing to the strong synergetic effect of hierarchical spherical cavity and surface oxygen vacancies simultaneously. The hierarchical spherical cavity, substantially constructed by the self-interconnected nanosheets, enhances the light-harvesting ability via multiple light reflections not only in spherical cavity but also among the self-interconnected nanosheets. Surface oxygen vacancies favor the energy band gap narrowing via forming a miniband just below the conduction band and then extend the photoresponse region, further boosting the light-harvesting ability. Importantly, surface oxygen vacancies function as the electron sinks to capture photoelectrons and thus restrict their recombination probability with holes, finally improving the photoelectron-hole separation efficiency. Meanwhile, this photocatalyst presents excellent reusability, showing its promising potential in practical applications. This work sheds light on a new application of hierarchical WO3 microspheres with tailored surface oxygen vacancies and its strong synergetic effect of hierarchical structures and surface oxygen vacancies on photocatalytic performance, delivering new insights for rationally designing highly active photocatalysts applied in future green and sustainable organic transformation reactions.

Applied Surface Science published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent) (biomass-derived). 403-41-8 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H9FO, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zou, Chun; Li, Ru-Yi; Chen, Jian-Xin; Wang, Fang; Gao, Ying; Fu, Yan-Qing; Xu, Yong-Quan; Yin, Jun-Feng published the artcile< Zijuan tea- based kombucha: Physicochemical, sensorial, and antioxidant profile>, COA of Formula: C8H18O, the main research area is Camellia sugar glucose sucrose beta linalool levomenthol anthocyanin antioxidant; Anthocyanins; Antioxidant activity; Attractive color; Kombucha; Zijuan tea.

Zijuan tea is a representative anthocyanin-rich tea cultivar in China. In this study, Zijuan tea was used to produce a novel kombucha beverage (ZTK). The physicochem., sensory properties, and antioxidant activity of ZTK were compared with that of black tea kombucha (BTK) and green tea kombucha (GTK). Results indicated that after fermentation, the color of ZTK changed from yellowish-brown to salmon-pink, because its anthocyanins (4.5 mg/L) appeared red in acidic conditions. Meanwhile no significant changes of color were observed in BTK and GTK. The dynamic changes of pH, biomass, and concentrations of sugars, amino acids, and main organic acids were similar in three kombucha beverages, except catechins showing different trends. Moreover, ZTK showed the highest overall acceptability score, antioxidant activity, and concentration of volatiles among the three kombucha beverages. Therefore, Zijuan tea is suitable for the preparation of kombucha beverage with attractive color and health benefits.

Food Chemistry published new progress about Alcohols Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, COA of Formula: C8H18O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Chan, Jessica Z.; Yesilcimen, Ahmet; Cao, Min; Zhang, Yuyang; Zhang, Bochao; Wasa, Masayuki published the artcile< Direct Conversion of N-Alkylamines to N-Propargylamines through C-H Activation Promoted by Lewis Acid/Organocopper Catalysis: Application to Late-Stage Functionalization of Bioactive Molecules>, SDS of cas: 76-84-6, the main research area is diastereoselective enantioselective synthesis propargylamine; alkylamine conversion propargylamine Lewis acid copper catalysis; carbon hydrogen bond activation alkylamine conversion propargylamine.

An efficient catalytic method to convert an α-C-H bond of N-alkylamines into an α-C-alkynyl bond was developed. In the past, such transformations were carried out under oxidative conditions, and the enantioselective variants were confined to tetrahydroisoquinoline derivatives Here, we disclose a method for the union of N-alkylamines and trimethylsilyl alkynes, without the presence of an external oxidant and promoted through cooperative actions of two Lewis acids, B(C6F5)3 and a Cu-based complex. A variety of propargylamines can be synthesized in high diastereo- and enantioselectivity. The utility of the approach is demonstrated by the late-stage site-selective modification of bioactive amines. Kinetic investigations that shed light on various mechanistic nuances of the catalytic process are presented.

Journal of the American Chemical Society published new progress about Alkynes Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation) (trimethylsilyl). 76-84-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C19H16O, SDS of cas: 76-84-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Mehdipour, Ebrahim; Baharlouei, Ehsan; Zarnegar, Zohre published the artcile< Selective trimethylsilylation of alcohols and phenols with hexamethyldisilazane catalyzed by LaCoO3 perovskite>, Recommanded Product: Triphenylmethanol, the main research area is green trimethylsilylation alc phenol hexamethyldisilazane cobalt lanthanum perovskite catalyst.

Trimethylsilylation of alcs. and phenols were carried out under solvent-free conditions with hexamethyldisilazane (HMDS) using LaCoO3 perovskite. LaCoO3 as an efficient catalyst accelerated this reaction under milder condition. The advantages of this method are evident regarding, easy separation, low cost and low catalyst loading, lack of pollution, easy work-up, and selective protection of primary and secondary alcs.

Iranian Chemical Communication published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 76-84-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C19H16O, Recommanded Product: Triphenylmethanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Marinella, Mark A. published the artcile< Indomethacin and resveratrol as potential treatment adjuncts for SARS-CoV-2/COVID-19>, Quality Control of 501-36-0 , the main research area is human covid19 virus indomethacin resveratrol.

The ongoing pandemic caused by severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2, also known as COVID-19) has led to unprecedented challenges for the global healthcare system. This novel coronavirus disease phenotype ranges from asymptomatic carriage to fulminant cytokine storm with respiratory failure, polyorgan dysfunction and death. Severe disease is characterised by exuberant inflammation resulting from high circulating cytokines such as interleukin-6 and tumor necrosis factor. These inflammatory mediators are responsible for the detrimental effects on the immune, hematol., respiratory, renal, gastrointestinal and other body systems. In addition to inhibition of viral replication, blunting this inflammatory response before overt cytokine storm is important to improve outcomes. Although there are upcoming promising agents such as remdesivir and convalescent plasma, inexpensive, safe and widely available adjunct treatments to ameliorate disease burden would be welcome. Two potential anti-inflammatory agents include indomethacin, which has been shown in exptl. models to decrease canine coronavirus levels in dogs and exhibit antiviral activity against several other viruses and the polyphenol, resveratrol, a potent antioxidant that has shown antiviral activity against several viruses.

International Journal of Clinical Practice published new progress about Anti-inflammatory agents. 501-36-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C14H12O3, Quality Control of 501-36-0 .

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Rios, Italo C.; Cordeiro, Joao P.; Arruda, Tathilene B. M. G.; Rodrigues, F. Eduardo A.; Uchoa, Antonia F. J.; Luna, F. Murilo T.; Cavalcante, Celio L. Jr; Ricardo, Nagila M. P. S. published the artcile< Chemical modification of castor oil fatty acids (Ricinus communis) for biolubricant applications: An alternative for Brazil's green market>, Electric Literature of 104-76-7, the main research area is Ricinus castor oil fatty toluenesulfonic acid biolubricant.

Plants oils have been increasingly gaining acceptance in world markets, due to their great potential as raw material to replace conventional mineral oils for formulation of lubricants. In this study, samples of new potential bio-based lubricant mols. were synthesized from castor oil fatty acids. The synthesis occurred in three steps: esterification with 2-ethyl-1-hexanol, epoxidation and opening of oxirane rings with different nucleophilic agents: 1-butanol (BIOBUT) and water (BIOWAT). The main objective was to study the influence of hydroxyl groups and branching level on physicochem. properties and thermal degradation of samples. The products obtained in each step were characterized by 1H NMR and their physicochem. properties. The results indicated that the less polar samples (BIOBUT) exhibited a better low-temperature performance (PP -48°C). Furthermore, BIOBUT has superior oxidation stability (IP 4.22 h) compared to BIOWAT (IP 3.27 h). However, the BIOWAT showed a higher viscosity values (> 470 mm2/s at 40°C). Thermogravimetric analyses have indicated that BIOWAT shows better thermal stability. Finally, the activation energy determined for the first thermal event for BIOWAT (151 kJ.mol-1) was higher than BIOBUT.

Industrial Crops and Products published new progress about Activation energy. 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, Electric Literature of 104-76-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts