Category: 112-63-0

Zhang, Ming; Gao, Bin; Yao, Ying; Xue, Yingwen; Inyang, Mandu published the artcile< Synthesis, characterization, and environmental implications of graphene-coated biochar>, Computed Properties of 112-63-0, the main research area is synthesis characterization graphene coated biochar.

The biochar technol. was combined with the emerging graphene technol. to create a new engineered graphene-coated biochar from cotton wood. The biomass feedstock was 1st treated with graphene/pyrene-derivative and was then annealed at 600° in a quartz tube furnace under N environment. Laboratory characterization with different microscopy and spectrometry tools showed that the graphene sheets were soldered by the pyrene mols. on the biochar surface during the annealing process. Thermogravimetric anal. showed that the graphene skin could improve the thermal stability of the biochar, making the engineered biochar a better C sequester for large scale land applications. Batch sorption exptl. results indicated that the graphene-coated biochar has excellent adsorption ability of polycyclic aromatic hydrocarbons (PAHs) with a maximum Methylene Blue adsorption capacity of 174 mg/g, which is >20 times higher than that of the unmodified cotton wood biochar and comparable to those of some phys. or chem. activated carbons. The enhanced adsorption of Methylene Blue on the graphene-coated biochar is mainly controlled by the strong π-π interactions between aromatic mols. and the graphene sheets on biochar surface. It is anticipated that this novel, facile, and low-cost method can be expanded to other C-rich materials to create engineered biochar for various environmental applications.

Science of the Total Environment published new progress about Adsorptive wastewater treatment. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Computed Properties of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Sehaki, Chabha; Jullian, Nathalie; Choque, Elodie; Dauwe, Rebecca; Fontaine, Jean Xavier; Molinie, Roland; Ayati, Fadila; Fernane, Farida; Gontier, Eric published the artcile< Profiling of Essential Oils from the Leaves of Pistacia lentiscus Collected in the Algerian Region of Tizi-Ouzou: Evidence of Chemical Variations Associated with Climatic Contrasts between Littoral and Mountain Samples>, Electric Literature of 112-63-0, the main research area is Pistacia lentiscus leaf essential oil chem variation; Pistacia lentiscus; antioxidant activity; essential oil; fatty acid.

Leaves of Pistacia lentiscus were collected from two Algerian sites in the mountains and the littoral of the Tizi-Ouzou region. The harvest was conducted in four consecutive seasons on the same selected set of trees. Essential oils (EOs) were extracted by hydrodistillation; then, they were analyzed by gas chromatog. coupled mass spectrometry (GC-MS). Forty-seven constituents could be detected and quantified, including α-pinene (2-13%), β-caryophyllene (8-25%), β-myrcene (0.3-19%), bornyl acetate (0.8-7%), δ-cadinene (3-8%), bisabolol (1-9%), β-pinene (0.9-7%), caryophyllene oxide (4-9%), and α-cadinol (3-11%). Antioxidant (AOx) activities of the EOs were assessed by ferric reducing antioxidant power (FRAP), 2,2-diphenyl-1-picrylhydrazyl (DPPH), and 2,2 ‘-azino-bis (3-ethylbenzothiazoline)-6-sulfonic acid (ABTS) assays. Significant differences in EO composition and AOx activities appeared dependent on the season and the site. Variations of AOx activities were significant for the FRAP and ABTS tests but not for DPPH. Characterization of the leaf fatty acyl (FA) profiles was performed by GC-MS. Variability appeared according to season and altitude. Polyunsaturated fatty acids levels were high (27-55%) at the coldest date and place. The levels of linolenic acyl in the leaves were significantly correlated with bisabolol levels in the EOs (Spearman’s correlation coefficient: 0.818). Such results will be useful for the sustainable local valorization of wild P. lentiscus. These data also open new routes for further studies on terpenoid biosynthesis using correlation networks and fluxomic approaches.

Molecules published new progress about Antioxidants. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Electric Literature of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Chen, Zhi-Min; Zhang, Qing-Wei; Chen, Zhi-Hua; Li, Hui; Tu, Yong-Qiang; Zhang, Fu-Min; Tian, Jin-Miao published the artcile< Organocatalytic Asymmetric Halogenation/Semipinacol Rearrangement: Highly Efficient Synthesis of Chiral α-Oxa-Quaternary β-Haloketones>, Electric Literature of 112-63-0, the main research area is dihydropyranyl diarylmethanol cinchona alkaloid diastereoselective enantioselective halogenation semipinacol rearrangement; beta haloketone chiral halotetrahydropyranyl ketone stereoselective preparation; diastereoselective enantioselective halogenation semipinacol rearrangement catalyst cinchona alkaloid.

A novel asym. halogenation/semipinacol rearrangement reaction catalyzed by cinchona alkaloid derivatives was developed. Two types of β-haloketones (X = Br, Cl) were obtained with up to 95% yield and 99% enantiomeric excess. The desired (+) and (-) enantiomers of the β-haloketones were readily obtained.

Journal of the American Chemical Society published new progress about Aralkyl alcohols Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation) (dihydropyranyl). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Electric Literature of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Thomson, Jennifer E.; Kyle, Andrew F.; Gallagher, Katherine A.; Lenden, Philip; Concellon, Carmen; Morrill, Louis C.; Miller, Andrew J.; Joannesse, Caroline; Slawin, Alexandra M. Z.; Smith, Andrew D. published the artcile< N-Heterocyclic carbene catalysed oxygen-to-carbon carboxyl transfer of indolyl and benzofuranyl carbonates>, Electric Literature of 112-63-0, the main research area is indolyl carbonate carboxyl transfer nitrogen heterocyclic carbene catalyst; benzofuranyl carbonate carboxyl migration nitrogen heterocyclic carbene catalyst; indolecarboxylate hydro preparation; benzofurancarboxylate hydro preparation.

The ability of N-heterocyclic carbenes to promote O-to-C carboxyl transfer on a range of indolyl and benzofuranyl carbonates is examined, and the scope and limitations of this process are delineated.

Synthesis published new progress about Carbenes (methylene derivatives) Role: CAT (Catalyst Use), USES (Uses) (nitrogen-heterocyclic). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Electric Literature of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

He, Li; Chen, Yanhua; Zhang, Haitian; Wang, Hui; Chen, Shujuan; Liu, Shuliang; Liu, Aiping; Li, Qin; Ao, Xiaolin; Liu, Yaowen published the artcile< Isolation and identification of Lactobacillus and yeast species and their effect on the quality of fermented rice cakes>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is Lactobacillus Saccharomyces isolation fermented rice cake quality.

In this study, microbes were isolated from the rice slurry of a fermented rice cake to obtain lactic acid bacteria and yeast species. These species were identified using microbial physiol. and gene sequence analyses. As the growth of the lactic acid bacterial strain R-2b and the yeast J-3a strains were found to be the best, a composite starter comprising these microbes was used for the preparation of fermented rice cakes. Based on single factor and orthogonal experiments, when the proportion of Lactobacillus plantarum, Saccharomyces cerevisiae, and Candida humilis was 1:3:6, the optimal fermentation conditions were addition of sugar and starter amounts of 20% and 6%, resp., a fermentation temperature of 32°C, and fermentation time of 8 h. The fermented rice cake with this optimum ratio had the most abundant volatile components and qualified physicochem. and microbial indexes. Addnl., the overall quality was better than that of com. available products.

Innovative Food Science & Emerging Technologies published new progress about Bakery cakes (fermented rice). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Collett, Christopher J.; Massey, Richard S.; Maguire, Oliver R.; Batsanov, Andrei S.; O’Donoghue, AnnMarie C.; Smith, Andrew D. published the artcile< Mechanistic insights into the triazolylidene-catalysed Stetter and benzoin reactions: role of the N-aryl substituent>, Category: esters-buliding-blocks, the main research area is triazolylidene catalyzed Stetter benzoin reaction aryl substituent effect mechanism.

The in situ observation, isolation and reversible formation of intermediate 3-(hydroxybenzyl)azolium salts derived from NHC addition to a range of substituted benzaldehydes is probed. Equilibrium constants for the formation of these 3-(hydroxybenzyl)azolium salts, as well as rate constants of hydrogen-deuterium exchange (kex) at C(α) of these intermediates for a range of N-aryl triazolinylidenes is reported. These combined studies give insight into the preference of N-pentafluorophenyl NHCs to participate in benzoin and Stetter reaction processes.

Chemical Science published new progress about Aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Category: esters-buliding-blocks.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Topczewski, Joseph J.; Kuder, Craig H.; Neighbors, Jeffrey D.; Hohl, Raymond J.; Wiemer, David F. published the artcile< Fluorescent schweinfurthin B and F analogs with anti-proliferative activity>, HPLC of Formula: 112-63-0, the main research area is schweinfurthin fluorescent analog synthesis antiproliferative anticancer cytotoxicity.

The natural tetracyclic schweinfurthins are potent and selective inhibitors of cell growth in the National Cancer Institute’s 60 cell-line screen. At this time, the mechanism or cellular target that underlies this activity has not yet been identified, and efforts to illuminate the schweinfurthins’ mode of action would benefit from development of potent fluorescent analogs that could be readily visualized within cells. This report described the synthesis of fluorescent analogs, such as I [R = H, R1 = OH, R2 = NO2; R = H, R1 = OMe, R2 = NO2, NH2; R = OH, R1 = OMe, R2 = NO2, NH2], of schweinfurthins B and F, and demonstrated that these compounds retain the potent and differentially toxic activities against select human cancer cells that are characteristic of the natural schweinfurthins. In addition, the synthesis of control compounds that maintain parallel fluorescent properties, but lack the potent activity of the natural schweinfurthin was described. Use of fluorescence microscopy showed differences between the localization of the active and relatively inactive schweinfurthin analogs. The active compounds localized in peripheral puncta which may identify the site(s) of activity.

Bioorganic & Medicinal Chemistry published new progress about Antiproliferative agents. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, HPLC of Formula: 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Liu, Jing; Ma, Shengtao; Lin, Meiqing; Tang, Jian; Yue, Congcong; Zhang, Zhang; Yu, Yingxin; An, Taicheng published the artcile< New mixed bromine/chlorine transformation products of tetrabromobisphenol A: Synthesis and identification in dust samples from an e-waste dismantling site>, Application In Synthesis of 112-63-0, the main research area is mixed bromine chlorine transformation product tetrabromobisphenol A dust ewaste.

The large-scale production and usage of tetrabromobisphenol A (TBBPA) and its analogs have caused widespread contamination, raising concern about their potential endocrine disruption effects on both humans and ecosystems. In the present study, debromination and unknown mixed bromine/chlorine transformation products of TBBPA (X-BBPA) were screened in dust samples from an e-waste dismantling site. Five monochloro products (2-chloro-2′,6,6′-TriBBPA, 2-chloro-2′,6-DiBBPA, 2-chloro-2′,6′-DiBBPA, 2-chloro-2′-MoBBPA, and 2-chloro-6-MoBBPA) and two dichloro products (2,2′-dichloro-6,6′-DiBBPA and 2,2′-dichloro-6-MoBBPA) were successfully synthesized and structurally identified. TBBPA and its transformation products were detected by comparison of their mass spectra and retention times with those of synthetic standards The mean concentration of X-BBPA was 1.63 x 104 ng/g in e-waste dismantling workshop dust samples based on dry weight, which was at a similar level to TBBPA. However, it was 1 order of magnitude lower than the concentrations of the debromination congeners. Thus, both debromination and chlorine-bromine exchange may be important reactions during the thermal processing of e-waste. The results on mixed chlorinated/brominated TBBPA transformation products provided new insights into TBBPA transformation. The elevated levels of the transformation products of TBBPA suggested that these products should be targeted to avoid underestimation of possible health risks.

Environmental Science & Technology published new progress about Air pollution. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Application In Synthesis of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Dumitrescu, Dan; Legrand, Yves-Marie; Petit, Eddy; van der Lee, Arie; Barboiu, Mihail published the artcile< Adaptive binding and selection of compressed 1,ω-diammonium-alkanes via molecular encapsulation in water>, Quality Control of 112-63-0, the main research area is crystal structure water guanidinium pyrenetetrasulfonate aminoalkane.

Guest mols. confined inside hollow mol. assemblies and thus protected from their environment can show unexpected structural behavior or special reactivity compared to their behavior in a bulk, unprotected environment. A special case is the coiling behavior of variable-length alkane chains in rigid hydrogen-bonded mol. cages. It has been found before that coiling may occur in such circumstances, but no exptl. evidence concerning the exact conformation of the chains has yet been presented. Self-assembly of a mol. cage in water and the crystalline state from three distinct components in which linear 1,ω-diammonium-alkanes chains are confined with different degrees of compression are reported. The exact coiling behavior is determined from at. resolution X-ray diffraction showing crenel-like conformations in the compressed state. Chem. selection can be obtained from mixtures of alkane chains via the encapsulation of kinetically stable conformations observed during the encapsulation of pure components. Moreover, it was found that uncompressed and compressed chains can be competitively trapped inside the capsule. These findings may provide insight in areas to a better understanding of biol. processes, such as the fatty acid metabolism

Chemical Science published new progress about COSY spectroscopy. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Quality Control of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Li, Jianhua; Jiang, Chao published the artcile< Palladium-Catalyzed C-H Silylation of Aliphatic Ketones Using an Aminooxyamide Auxiliary>, Application In Synthesis of 112-63-0, the main research area is palladium catalyzed silylation aliphatic ketone aminooxyamide auxiliary; beta silyl ketone preparation.

A Pd-catalyzed β-C(sp3)-H silylation of aliphatic ketones with disilanes to afford β-silyl ketones is reported. The aminooxyamide auxiliary is critical for the C-H activation and silylation. The reaction tolerates a number of functional groups and shows good selectivity in silylating β-C(sp3)-H bonds in the company of C(sp2)-H bonds and acidic α-C(sp3)-H bonds. The reaction is scalable, and the aminooxyamide auxiliary is readily removed to give β-silyl ketones, which could serve as useful building blocks for organic synthesis. Late-stage diversification using this protocol is demonstrated in the silylation of santonin with good yield.

Organic Letters published new progress about Aliphatic ketones Role: RCT (Reactant), RACT (Reactant or Reagent). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Application In Synthesis of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics