Tag: 200-300

Postharvest Treatment of Wood Biomass from a Large Collection of European Grape Varieties: Impact on the Selection of Polyphenol-Rich Byproducts was written by Billet, Kevin;Unlubayir, Marianne;Munsch, Thibaut;Malinowska, Magdalena Anna;de Bernonville, Thomas Duge;Oudin, Audrey;Courdavault, Vincent;Besseau, Sebastien;Giglioli-Guivarc’h, Nathalie;Lanoue, Arnaud. And the article was included in ACS Sustainable Chemistry & Engineering in 2021.Name: (E)-4-(3,5-Dihydroxystyryl)benzene-1,2-diol This article mentions the following:

Grape canes are viticulture byproducts representing a sustainable source of valuable bioactive polyphenols. However, varietal origin and postharvest treatment greatly influence the effective concentration of biomols., thus limiting industrial development. With the aim to develop grape cane extracts with high polyphenol contents, the selection of a specific grape variety combined with optimized postharvest treatment is the major determinant. A previously described postharvest treatment comprising cutting grapevine stalks of 0.5 cm length and storage at 15-20°C over 2 wk was applied on a selection of 44 grape varieties representative of the genetic diversity of the whole European collection and performing the screening of polyphenol contents. Varietal rankings according to major polyphenols (catechin, epicatechin, E-resveratrol, E-piceatannol, E-ε-viniferin, E-miyabenol C, ampelopsin A, E-vitisin B, hopeaphenol, and isophopeaphenol) were performed with and without the postharvest treatment. We observed that postharvest treatment greatly influenced the total polyphenol composition but also the ranking of polyphenol-rich varieties. This polyphenol screening of grape canes from a large collection of European varieties revealed the importance of postharvest treatment together with the selection of varieties to develop natural extracts based on grapevine wood biomass enriched with mols. with health benefits. In the experiment, the researchers used many compounds, for example, (E)-4-(3,5-Dihydroxystyryl)benzene-1,2-diol (cas: 10083-24-6Name: (E)-4-(3,5-Dihydroxystyryl)benzene-1,2-diol).

(E)-4-(3,5-Dihydroxystyryl)benzene-1,2-diol (cas: 10083-24-6) belongs to alcohols. A strong base can deprotonate an alcohol to yield an alkoxide ion (R―O−). For example, sodamide (NaNH2), a very strong base, abstracts the hydrogen atom of an alcohol. Tertiary alcohols cannot be oxidized at all without breaking carbon-carbon bonds, whereas primary alcohols can be oxidized to aldehydes or further oxidized to carboxylic acids.Name: (E)-4-(3,5-Dihydroxystyryl)benzene-1,2-diol

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Evaluation of hyaluronic acid nanoparticle embedded chitosan-gelatin hydrogels for antibiotic release was written by Ozkahraman, Bengi;Tamahkar, Emel;Idil, Neslihan;Kilic Suloglu, Aysun;Percin, Isik. And the article was included in Drug Development Research in 2021.Formula: C10H14O5 This article mentions the following:

The development of chitosan-gelatin (CS-G) hydrogels embedded with ampicillin-loaded hyaluronic acid nanoparticles (HA-NPs) for wound dressing is proposed. It was aimed to provide controlled ampicillin delivery by incorporation of HA-NPs into biocompatible CS-G hydrogel structure. According to in vitro ampicillin release studies, 55% of ampicillin was released from CS-G/HA-NPs hydrogels after 5 days. Antibacterial performance of CS-G/HA-NPs hydrogels was proven with agar disk diffusion test. For cytotoxicity assay, fibroblast cell viability increased in CS-G/HA-NPs hydrogels compared with CS-G group after 24 h incubation. Consequently, the potential ability of CS-G/HA-NPs hydrogels as a controlled drug delivery system has been verified. In the experiment, the researchers used many compounds, for example, Diethyleneglycoldiacrylate (cas: 4074-88-8Formula: C10H14O5).

Diethyleneglycoldiacrylate (cas: 4074-88-8) belongs to alcohols. A strong base can deprotonate an alcohol to yield an alkoxide ion (R―O−). For example, sodamide (NaNH2), a very strong base, abstracts the hydrogen atom of an alcohol. Grignard and organolithium reagents are powerful tools for organic synthesis, and the most common products of their reactions are alcohols.Formula: C10H14O5

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Asymmetric synthesis of nortropanes via Rh-catalysed allylic arylation was written by Zhang, Yan;Goetzke, F. Wieland;Christensen, Kirsten E.;Fletcher, Stephen P.. And the article was included in ACS Catalysis in 2022.Related Products of 68716-49-4 This article mentions the following:

Tropane derivatives are extensively used in medicine, but catalytic asym. methods for their synthesis are underexplored. Here, we report Rh-catalyzed asym. Suzuki-Miyaura-type cross-coupling reactions between a racemic N-Boc-nortropane-derived allylic chloride and (hetero)aryl boronic esters. The reaction proceeds via an unexpected kinetic resolution, and the resolved enantiopure allyl chloride can undergo highly enantiospecific reactions with N-, O-, and S-containing nucleophiles. The method was applied in a highly stereoselective formal synthesis of YZJ-1139(1), a potential insomnia treatment that recently completed Phase II clin. trials. Our report represents an asym. catalytic method for the synthesis of YZJ-1139(1) and related compounds Tropane derivatives are extensively used in medicine, but catalytic asym. methods for their synthesis are underexplored. Here we report Rh-catalyzed asym. Suzuki-Miyaura type cross-coupling reactions between a racemic N-Boc-nortropane-derived allylic chloride and (hetero-)aryl-boronic esters. The reaction proceeds via an unexpected kinetic resolution, and the resolved enantiopure allyl chloride can undergo highly enantiospecific reactions with N, O, and S-containing nucleophiles. The method was applied in a highly stereoselective formal synthesis of YZJ-1139(1) (I), a potential insomnia treatment that recently completed Phase II clin. trials. Our report represents the first synthesis of YZJ-1139(1) and related compounds using asym. catalysis. In the experiment, the researchers used many compounds, for example, 2-(4-Bromophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (cas: 68716-49-4Related Products of 68716-49-4).

2-(4-Bromophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (cas: 68716-49-4) belongs to alcohols. Because alcohols are easily synthesized and easily transformed into other compounds, they serve as important intermediates in organic synthesis. A multistep synthesis may use Grignard-like reactions to form an alcohol with the desired carbon structure, followed by reactions to convert the hydroxyl group of the alcohol to the desired functionality.Related Products of 68716-49-4

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Identifying Major Drivers of Antioxidant Activities in Complex Polyphenol Mixtures from Grape Canes was written by Ferrier, Manon;Billet, Kevin;Drouet, Samantha;Tungmunnithum, Duangjai;Malinowska, Magdalena Anna;Marchal, Cecile;Dedet, Sandrine;Giglioli-Guivarc’h, Nathalie;Hano, Christophe;Lanoue, Arnaud. And the article was included in Molecules in 2022.Synthetic Route of C14H12O4 This article mentions the following:

Grape canes represent a valuable source of numerous polyphenols with antioxidant properties, whose compositions vary depending on the genotype and environmental factors. Antioxidant activities of pure mols. are often reported without considering possible interactions that may occur in complex polyphenol mixture Using UPLC-MS-based metabolomics and unsupervised classification, we explored the polyphenol variations in grape cane extracts from a collection of European varieties. Antioxidant activities were assessed using ORAC, ABTS, DPPH, FRAP, CUPRAC and chelation assays. Pairwise correlations between polyphenols and antioxidant capacities were performed to identify mols. that contributed more to the antioxidant capacities within a complex mixture of polyphenols. In the experiment, the researchers used many compounds, for example, (E)-4-(3,5-Dihydroxystyryl)benzene-1,2-diol (cas: 10083-24-6Synthetic Route of C14H12O4).

(E)-4-(3,5-Dihydroxystyryl)benzene-1,2-diol (cas: 10083-24-6) belongs to alcohols. The oxygen atom of the strongly polarized O―H bond of an alcohol pulls electron density away from the hydrogen atom. This polarized hydrogen, which bears a partial positive charge, can form a hydrogen bond with a pair of nonbonding electrons on another oxygen atom. Grignard and organolithium reagents are powerful tools for organic synthesis, and the most common products of their reactions are alcohols.Synthetic Route of C14H12O4

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Viewing-angle-switching film based on polymer dispersed liquid crystals for smart anti-peeping liquid crystal display was written by He, Zemin;Shen, Wenbo;Yu, Ping;Zhao, Yuzhen;Zeng, Zhuang;Liang, Zeng;Chen, Zhuo;Zhang, Huimin;Zhang, Haiquan;Miao, Zongcheng;Wang, Dong. And the article was included in Liquid Crystals in 2022.Synthetic Route of C10H14O5 This article mentions the following:

In this paper, the viewing-angle-switching (VAS) films based on polymer dispersed liquid crystals (PDLCs) were fabricated and the optical properties of the VAS films were studied. The VAS films based on PDLC films can exhibit elec. switchable viewing-angle properties, and the films showed a narrow viewing angle under no elec. field and presented a wide viewing angle under elec. field (24 V). Furthermore, the smart anti-peeping liquid crystal display (LCD) containing the VAS film based on PDLC film also displayed the elec. switchable viewing-angle performance and the corresponding mechanism was discussed. The results demonstrated both the anti-peeping effect and elec. switchable view-angle effect of the as-fabricated VAS film, promising potential applications in intelligent optical films and novel information displays. In the experiment, the researchers used many compounds, for example, Diethyleneglycoldiacrylate (cas: 4074-88-8Synthetic Route of C10H14O5).

Diethyleneglycoldiacrylate (cas: 4074-88-8) belongs to alcohols. Under appropriate conditions, inorganic acids also react with alcohols to form esters. To form these esters, a wide variety of specialized reagents and conditions can be used. A multistep synthesis may use Grignard-like reactions to form an alcohol with the desired carbon structure, followed by reactions to convert the hydroxyl group of the alcohol to the desired functionality.Synthetic Route of C10H14O5

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

4D printing of high performance shape memory polymer using stereolithography was written by Choong, Yu Ying Clarrisa;Maleksaeedi, Saeed;Eng, Hengky;Wei, Jun;Su, Pei-Chen. And the article was included in Materials & Design in 2017.Product Details of 4074-88-8 This article mentions the following:

High shape fixity, shape recovery, and prolonged shape memory cycle life are desirable aspects of 4D printed parts; however, the durability of 4D printed parts is rarely investigated. Here, we demonstrated a photopolymer printable by stereolithog. apparatus (SLA) which uses a tBA-co-DEGDA network based on dual-component phase switching mechanism to build parts of complex geometries and exhibit shape memory behavior. The material can achieve a high curing rate and precise printing that are highly desired for SLA process. The mech. strength of the printed parts is comparable statistically to industrial SMPs and shape memory tests showed excellent shape memory performance with higher durability of > 20 shape memory cycles as compared to current 4D printed parts. This work is believed to enable the use of SLA technol. to fabricate responsive components of high performance, which also significantly advances the 3D printing technol. for more robust applications. In the experiment, the researchers used many compounds, for example, Diethyleneglycoldiacrylate (cas: 4074-88-8Product Details of 4074-88-8).

Diethyleneglycoldiacrylate (cas: 4074-88-8) belongs to alcohols. Because alcohols are easily synthesized and easily transformed into other compounds, they serve as important intermediates in organic synthesis. A multistep synthesis may use Grignard-like reactions to form an alcohol with the desired carbon structure, followed by reactions to convert the hydroxyl group of the alcohol to the desired functionality.Product Details of 4074-88-8

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Frequency-dependent magnetic susceptibility of magnetite and cobalt ferrite nanoparticles embedded in PAA hydrogel was written by van Berkum, Susanne;Dee, Joris T.;Philipse, Albert P.;Erne, Ben H.. And the article was included in International Journal of Molecular Sciences in 2013.Formula: C10H14O5 This article mentions the following:

Chem. responsive hydrogels with embedded magnetic nanoparticles are of interest for biosensors that magnetically detect chem. changes. A crucial point is the irreversible linkage of nanoparticles to the hydrogel network, preventing loss of nanoparticles upon repeated swelling and shrinking of the gel. Here, acrylic acid monomers are adsorbed onto ferrite nanoparticles, which subsequently participate in polymerization during synthesis of poly(acrylic acid)-based hydrogels (PAA). To demonstrate the fixation of the nanoparticles to the polymer, our original approach is to measure low-field AC magnetic susceptibility spectra in the 0.1 Hz to 1 MHz range. In the hydrogel, the magnetization dynamics of small iron oxide nanoparticles are comparable to those of the particles dispersed in a liquid, due to fast Nael relaxation inside the particles; this renders the ferrogel useful for chem. sensing at frequencies of several kHz. However, ferrogels holding thermally blocked iron oxide or cobalt ferrite nanoparticles show significant decrease of the magnetic susceptibility resulting from a frozen magnetic structure. This confirms that the nanoparticles are unable to rotate thermally inside the hydrogel, in agreement with their irreversible fixation to the polymer network. In the experiment, the researchers used many compounds, for example, Diethyleneglycoldiacrylate (cas: 4074-88-8Formula: C10H14O5).

Diethyleneglycoldiacrylate (cas: 4074-88-8) belongs to alcohols. Under appropriate conditions, inorganic acids also react with alcohols to form esters. To form these esters, a wide variety of specialized reagents and conditions can be used. Alcohols may be oxidized to give ketones, aldehydes, and carboxylic acids. These functional groups are useful for further reactions. Oxidation of organic compounds generally increases the number of bonds from carbon to oxygen (or another electronegative element, such as a halogen), and it may decrease the number of bonds to hydrogen.Formula: C10H14O5

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Selectively Imprinted β-cyclodextrin Polymer for Colorimetric Assay of Lysophosphatidic Acid for Point of Care Detection of Ovarian Cancer was written by Tarannum, Nazia;Kumar, Deepak;Agrawal, Ranu;Verma, Yeshvandra. And the article was included in ChemistrySelect in 2022.Formula: C10H14O5 This article mentions the following:

In the present study, a simple mol. imprinting technique for the quant. measurement of lysophosphatidic acid (LPA) is reported for the first time through colorimetry. LPA is a phospholipid bioactive involved in many physiol. and pathol. processes like stimulating DNA synthesis, proliferating ovarian cancer and inducing cell migration. It is reported that the concentration of LPA in patients with gynecol. cancers like ovarian cancer is considerably higher than in the control. The early diagnosis of ovarian cancer may exceed the survival rate of patients. There is a need for an anal. tool for point of care detection of ovarian cancer at an early stage. Herein, mol. imprinting technique is used to develop an imprinted β-Cyclodextrin (β-CD) polymer using LPA as a template. This MIP prepared was imprinted with an LPA cavity, which has been extended for colorimetry assay. The colorimetric LPA assay was conducted in the spiked blood serum sample. The detection limit of LPA in spiked serum samples is calculated as 0.078 μmol/L. In the experiment, the researchers used many compounds, for example, Diethyleneglycoldiacrylate (cas: 4074-88-8Formula: C10H14O5).

Diethyleneglycoldiacrylate (cas: 4074-88-8) belongs to alcohols. Similar to water, an alcohol can be pictured as having an sp3 hybridized tetrahedral oxygen atom with nonbonding pairs of electrons occupying two of the four sp3 hybrid orbitals. The most common reactions of alcohols can be classified as oxidation, dehydration, substitution, esterification, and reactions of alkoxides.Formula: C10H14O5

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Study on the synthesis of diethylene glycol di(meth)acrylate by transesterification was written by Song, Guoqiang;Li, Beibei;Tang, Long;Wang, Lingzhu;Luo, Jiuyan. And the article was included in Tuliao Gongye in 2014.COA of Formula: C10H14O5 This article mentions the following:

Diethylene glycol di(meth)acrylate reactive diluent has been synthesized by transesterification with diethylene glycol and Me (meth)acrylate through reactive distillation apparatus in order to achieve clean, efficient and high quality production The effects of different catalysts, polymerization system and the ratio of reaction material on reaction were investigated. The optimal conditions were obtained as follows: the purity of the product was 93% or more and the yield was 90% or more when the molar ratio of alc. to esters was 1:6 with dibutyltin dilaurate as catalyst on air and hydroxyanisole inhibitor mixed polymerization system. The chroma was good. 1H-NMR, GC and LC-MS were applied to monitor and characterize the products. In the experiment, the researchers used many compounds, for example, Diethyleneglycoldiacrylate (cas: 4074-88-8COA of Formula: C10H14O5).

Diethyleneglycoldiacrylate (cas: 4074-88-8) belongs to alcohols. The oxygen atom of the strongly polarized O―H bond of an alcohol pulls electron density away from the hydrogen atom. This polarized hydrogen, which bears a partial positive charge, can form a hydrogen bond with a pair of nonbonding electrons on another oxygen atom. A multistep synthesis may use Grignard-like reactions to form an alcohol with the desired carbon structure, followed by reactions to convert the hydroxyl group of the alcohol to the desired functionality.COA of Formula: C10H14O5

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Effects of the chain length of crosslinking agents on the electro-optical properties of polymer-dispersed liquid crystal films was written by Kashima, Miki;Cao, Hui;Liu, Huijing;Meng, Qingyong;Wang, Ding;Li, Fasheng;Yang, Huai. And the article was included in Liquid Crystals in 2010.COA of Formula: C10H14O5 This article mentions the following:

Polymer-dispersed liquid crystal (PDLC) films were prepared by photochem. polymerization from an UV-curable monomer/crosslinking agent/initiator/liquid crystal (LC) mixture The influences of the chain length of crosslinking agents on the PDLC system have been studied. The microstructures of the PDLC films were strongly influenced by the chain length of the crosslinker, which in turn influences the electro-optic properties of PDLC films. It is proved that adjusting the chain length of the crosslinking agents and the LC content can produce PDLC films that have good electro-optic properties with a lower LC content. In the experiment, the researchers used many compounds, for example, Diethyleneglycoldiacrylate (cas: 4074-88-8COA of Formula: C10H14O5).

Diethyleneglycoldiacrylate (cas: 4074-88-8) belongs to alcohols. Alcohols are among the most common organic compounds. They are used as sweeteners and in making perfumes, are valuable intermediates in the synthesis of other compounds, and are among the most abundantly produced organic chemicals in industry. Under carefully controlled conditions, simple alcohols can undergo intermolecular dehydration to give ethers. This reaction is effective only with methanol, ethanol, and other simple primary alcohols.COA of Formula: C10H14O5

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts