Month: November 2022

Chemically modified resveratrol as green corrosion inhibitor for Q235 steel: Electrochemical, SEM, UV and DFT studies was written by Zhang, Weiwei;Nie, Boli;Wang, Meifang;Shi, Shuanghao;Gong, Lei;Gong, Wenjie;Pang, Hao;Liu, Xiaowan;Li, Benzhe;Feng, Yuanyuan;Wu, Yan-Chao. And the article was included in Journal of Molecular Liquids in 2021.Synthetic Route of C20H22O8 The following contents are mentioned in the article:

It is of great significance to develop high-efficiency and green corrosion inhibitors for Q235 steel under acidic conditions. In this study, resveratrol was chem. modified to resveratrol-3-O-β-D-glucopyranoside (R3GP) in order to increase its solubility and complexation ability with metal ions. The obtained electrochem. anal. results indicated that R3GP was an anode-based mixed inhibitor, whose inhibitive efficiency was obviously higher than that of resveratrol (400 mg/L, 90.33% vs. 69.52%). The adsorption of R3GP over steel surface followed Langmuir isotherm, and the inhibition efficiency was still maintained 82.60% at 328 K. Surface analyses (SEM and AFM) proved the existence of R3GP on Q235 steel surface to form a corrosion-protective film. Quantum chem. calculations revealed the R3GP mol. could be more stable on Q235 steel surface. Mol. dynamic simulations also manifested that R3GP was absorbed more strongly on the metal surface in a parallel mode and had a large bind energy (561.66 kJ/mol). This study involved multiple reactions and reactants, such as (2S,3R,4S,5S,6R)-2-(3-Hydroxy-5-((E)-4-hydroxystyryl)phenoxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol (cas: 27208-80-6Synthetic Route of C20H22O8).

(2S,3R,4S,5S,6R)-2-(3-Hydroxy-5-((E)-4-hydroxystyryl)phenoxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol (cas: 27208-80-6) 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. Secondary alcohols are easily oxidized without breaking carbon-carbon bonds only as far as the ketone stage. No further oxidation is seen except under very stringent conditions.Synthetic Route of C20H22O8

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Continuous ultrasound and pulsed ultrasound: Selective extraction tools to obtain enriched antioxidants extracts from cocoa beans (Theobroma cacao L.) was written by Quiroz-Reyes, Cinthya Nathaly;Aguilar-Mendez, Miguel Angel. And the article was included in Innovative Food Science & Emerging Technologies in 2022.Category: alcohols-buliding-blocks The following contents are mentioned in the article:

In this study, the effect of continuous assisted extraction (CUAE) and pulsed ultrasound assisted extraction (PUAE) of phenolic compounds from cocoa beans was evaluated. Frequency (25/45 kHz) and extraction time (15/30 min) were varied. Phenolic acids were identified as catechin-(+), epicatechin-(+), procyanidin B1 and procyanidin B2 were quantified on each extract by HPLC-DAD. Then, total phenolic content (TPC), total flavonoids content (TFC), flavan-3-ols, non-flavonoids content (NF) and proanthocyanidins (PAC) were determined The exptl. findings indicated the highest extraction yields of TPC and flavonoids subclasses when prolonged PUAE was used. Addnl., an increase of 282% in epicatechin yield was obtained compared with CUAE. However, the prolonged use of continuous sonication increased the non-flavonoids extraction yield in 23% compared with pulsed sonication. The scavenging and iron chelating activity depended on the chem. composition of each extract and was not correlated directly to TPC. This study involved multiple reactions and reactants, such as (2R,2’R,3R,3’R,4R)-2,2′-Bis(3,4-dihydroxyphenyl)-[4,8′-bichromane]-3,3′,5,5′,7,7′-hexaol (cas: 29106-49-8Category: alcohols-buliding-blocks).

(2R,2’R,3R,3’R,4R)-2,2′-Bis(3,4-dihydroxyphenyl)-[4,8′-bichromane]-3,3′,5,5′,7,7′-hexaol (cas: 29106-49-8) belongs to alcohols. Alcohols are weak acids. The most acidic simple alcohols (methanol and ethanol) are about as acidic as water, and most other alcohols are somewhat less acidic. Converting an alcohol to an alkene requires removal of the hydroxyl group and a hydrogen atom on the neighbouring carbon atom. Dehydrations are most commonly carried out by warming the alcohol in the presence of a strong dehydrating acid, such as concentrated sulfuric acid.Category: alcohols-buliding-blocks

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Banana-peel-derived magnetic porous carbon as effective adsorbent for the enrichment of six bisphenols from beverage and water samples was written by Liang, Ming;Hou, Xiangchang;Xian, Yanping;Wu, Yuluan;Hu, Junpeng;Chen, Rongqiao;Wang, Li;Huang, Yufeng;Zhang, Xiaoli. And the article was included in Food Chemistry in 2022.Quality Control of 4,4′-Methylenediphenol The following contents are mentioned in the article:

Functionalized magnetic nanoporous carbon derived from banana peel was synthesized through carbonization, porogenesis, carboxylation and magnetization using banana peel and was successfully used as a magnetic solid phase extraction (MSPE) material for the enrichment of six bisphenols (BPs) from beverage and water samples. After the optimization of MSPE process, the enrichment factors of six target analytes were in the range of 74-112 for water samples, and 15-22 for beverage samples. Then, high-performance liquid chromatog.-quadrupole-Orbitrap high-resolution mass spectrometry (HPLC-Q Orbitrap-HRMS) was used for the separation and determination of the target analytes. Results showed that the extraction recoveries for 6 BPs were in the range of 71.9-108.4% with an RSD of 2.5-7.5% (n = 6). These results demonstrated that the as-prepared material could efficiently enrich some aromatic compounds and the proposed method is reliable and robust for the determination of BPs in water and beverage samples. This study involved multiple reactions and reactants, such as 4,4′-Methylenediphenol (cas: 620-92-8Quality Control of 4,4′-Methylenediphenol).

4,4′-Methylenediphenol (cas: 620-92-8) 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. The most common reactions of alcohols can be classified as oxidation, dehydration, substitution, esterification, and reactions of alkoxides.Quality Control of 4,4′-Methylenediphenol

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Rosin-derived poly(vinyl chloride) plasticizer: Synthesis, structure, and properties was written by Song, Fei;Jia, Puyou;Xia, Haoyu;Zhang, Meng;Hu, Lihong;Zhou, Yonghong. And the article was included in Journal of Vinyl and Additive Technology in 2020.SDS of cas: 106-21-8 The following contents are mentioned in the article:

In this work, rosin-based plasticizer was synthesized by Diels-Alder (DA) and esterification. First, the maleopimaric acid (RT) was obtained by DA between the double bond of rosin and maleic anhydride. Then, the carboxyl group and anhydride group of RT was esterified with tetrahydro geraniol to obtain the rosin-based polyacid esters (RTT) under the catalysis of p-toluene sulfonic acid. The structure of RT and RTT was detected by FTIR and ¹H-NMR. RTT was used as main plasticizer to obtain plasticized polyvinyl chloride (PVC) materials and compared with DOP. The results showed that RTT improved the thermal stability and reduced T_g of PVC film. Plasticized PVC films had excellent mech. properties with the elastic modulus of -4,793.67 MPa and tensile strength of -111.86 MPa, higher than that of pure PVC and DOP-6. RTT showed better volatility stability, migration, and solvent extraction in PVC compared to DOP. J. VINYL ADDIT. TECHNOL., 2019. © 2019 Society of Plastics Engineers. This study involved multiple reactions and reactants, such as 3,7-Dimethyloctan-1-ol (cas: 106-21-8SDS of cas: 106-21-8).

3,7-Dimethyloctan-1-ol (cas: 106-21-8) 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. 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.SDS of cas: 106-21-8

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

A novel polyhedral oligomeric silsesquioxane-based hybrid monolith as a sorbent for on-line in-tube solid phase microextraction of bisphenols in milk prior to high performance liquid chromatography-ultraviolet detection analysis was written by Liu, Jie;Liu, Qian;Wei, Liulin;Chen, Xiaomei;Li, Zhiqiang;Xu, Yidong;Gao, Xueyun;Lu, Xiaoxiao;Zhao, Jingchan. And the article was included in Food Chemistry in 2022.Product Details of 620-92-8 The following contents are mentioned in the article:

An online in-tube solid-phase microextraction (in-tube SPME) coupled with high-performance liquid chromatog. (HPLC) method was proposed based on a novel polyhedral oligomeric silsesquioxane (POSS)-hybrid monolith for the determination of four bisphenols (BPs) in milk. The monolith was synthesized using acrylamide (AM) and monomethacrylate-functionalized POSS (mono-MA-POSS) as functional monomers to copolymerize with ethylene dimethacrylate (EDMA). Due to the abundant hydrogen bonding, π-π and hydrophobic interaction sites, the synthetic monolith displayed satisfying extraction performance for target BPs. Under the optimized conditions, the developed online in-tube SPME-HPLC method exhibited low limits of detection (LODs) (0.030-0.055 ng mL^-1). The spiked recoveries were between 85.4 % and 111.8 %, and the relative standard deviations (RSDs) were less than 3.5 % for all the analytes. The results showed that the proposed method provided alternative for the anal. of BPs in complex samples. This study involved multiple reactions and reactants, such as 4,4′-Methylenediphenol (cas: 620-92-8Product Details of 620-92-8).

4,4′-Methylenediphenol (cas: 620-92-8) belongs to alcohols. Alcohols are weak acids. The most acidic simple alcohols (methanol and ethanol) are about as acidic as water, and most other alcohols are somewhat less acidic. Converting an alcohol to an alkene requires removal of the hydroxyl group and a hydrogen atom on the neighbouring carbon atom. Dehydrations are most commonly carried out by warming the alcohol in the presence of a strong dehydrating acid, such as concentrated sulfuric acid.Product Details of 620-92-8

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

A multifunctional system for genome editing and large-scale interspecies gene transfer was written by Teufel, Marc;Klein, Carlo A.;Mager, Maurice;Sobetzko, Patrick. And the article was included in Nature Communications in 2022.Recommanded Product: 367-93-1 The following contents are mentioned in the article:

CRISPR SWAPnDROP extends the limits of genome editing to large-scale in-vivo DNA transfer between bacterial species. Its modular platform approach facilitates species specific adaptation to confer genome editing in various species. In this study, we show the implementation of the CRISPR SWAPnDROP concept for the model organism Escherichia coli, the fast growing Vibrio natriegens and the plant pathogen Dickeya dadantii. We demonstrate the excision, transfer and integration of large chromosomal regions between E. coli, V. natriegens and D. dadantii without size-limiting intermediate DNA extraction CRISPR SWAPnDROP also provides common genome editing approaches comprising scarless, marker-free, iterative and parallel insertions and deletions. The modular character facilitates DNA library applications, and recycling of standardized parts. Its multi-color scarless co-selection system significantly improves editing efficiency and provides visual quality controls throughout the assembly and editing process. This study involved multiple reactions and reactants, such as (2R,3R,4S,5R,6S)-2-(Hydroxymethyl)-6-(isopropylthio)tetrahydro-2H-pyran-3,4,5-triol (cas: 367-93-1Recommanded Product: 367-93-1).

(2R,3R,4S,5R,6S)-2-(Hydroxymethyl)-6-(isopropylthio)tetrahydro-2H-pyran-3,4,5-triol (cas: 367-93-1) 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. Converting an alcohol to an alkene requires removal of the hydroxyl group and a hydrogen atom on the neighbouring carbon atom. Dehydrations are most commonly carried out by warming the alcohol in the presence of a strong dehydrating acid, such as concentrated sulfuric acid.Recommanded Product: 367-93-1

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Synthesis of 2-(Cyanomethyl)benzoic Esters via Carbon-Carbon Bond Cleavage of Indanones was written by Meng, Xiangtai;Chen, Dengfeng;Liu, Rui;Jiang, Ping;Huang, Shenlin. And the article was included in Journal of Organic Chemistry in 2021.SDS of cas: 106-21-8 The following contents are mentioned in the article:

A novel synthesis of 2-(cyanomethyl)benzoic esters 2-C(R)CN-3-R¹-4-R²-5-R³C₆HC(O)OR⁴ (R = H, Me; R¹ = H, Br, CN, CF₃; R² = H, Br, OMe, Cl, etc.; R³ = H, Me, OMe, Br; R⁴ = Me, Bn, furan-2-ylmethyl, 2H-1,3-benzodioxol-5-ylmethyl, etc.) and ethyl2-(3-cyanopropyl)benzoate from indanone derivatives I (R⁵ = Me, Ph, 4-trifluoromethylphenyl) and [5-oxo-6,7,8,9-tetrahydro-5H-benzo[7]annulen-6-ylidene]amino acetate has been established. This reaction proceeds via a deprotonation of alcs. R⁴OH with a chem. base, followed by a nucleophilic addition to indanones I and Beckmann fragmentation. In addition, this reaction could also work under electrochem. conditions, and no external chem. bases were needed. This mild method offers a novel strategy for the late-stage functionalization of various natural alcs. such as citronellol, nerol, abietyl alc., etc. This study involved multiple reactions and reactants, such as 3,7-Dimethyloctan-1-ol (cas: 106-21-8SDS of cas: 106-21-8).

3,7-Dimethyloctan-1-ol (cas: 106-21-8) 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.SDS of cas: 106-21-8

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

High pressure bubble- and dew-point data for a system containing CO₂ with detergent range alkanes and alcohols was written by Latsky, C.;Schwarz, C. E.. And the article was included in Journal of Supercritical Fluids in 2018.Application of 106-21-8 The following contents are mentioned in the article:

The aim of this work was to characterize the solute-solute interactions which exist in the CO₂+n-dodecane+3,7-dimethyl-1-octanol +1-decanol system. High pressure bubble- and dew-point data were therefore measured for four different mixtures between 308K and 358K and pressures up to 27.5MPa, with total solute mass fractions ranging between 0.631-0.015. The data were measured using the static synthetic visual phase detection method and experiments were conducted using a high pressure variable volume view cell. The effect of the solute-solute interactions was also analyzed by modeling the phase behavior of the mixtures with the RK-ASPEN model in Aspen Plus^. The measured and predicted data indicated that significant solute-solute interactions exist in the quaternary system. The solute-solute interactions were also found to result in complex phase behavior, as mixtures consisting largely of 1-decanol exhibited temperature inversions and co-solvency was found in n-dodecane rich mixtures This study involved multiple reactions and reactants, such as 3,7-Dimethyloctan-1-ol (cas: 106-21-8Application of 106-21-8).

3,7-Dimethyloctan-1-ol (cas: 106-21-8) belongs to alcohols. Alkyl halides are often synthesized from alcohols, in effect substituting a halogen atom for the hydroxyl group. Converting an alcohol to an alkene requires removal of the hydroxyl group and a hydrogen atom on the neighbouring carbon atom. Dehydrations are most commonly carried out by warming the alcohol in the presence of a strong dehydrating acid, such as concentrated sulfuric acid.Application of 106-21-8

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

A comprehensive study of the differences in protein expression and chemical constituents in tea leaves (Camellia sinensis var. sinensis) with different maturity using a combined proteomics and metabolomics method was written by Sun, Zhen;Chen, Dan;Zhu, Liyao;Zhao, Yanni;Lin, Zhi;Li, Xianzhen;Dai, Weidong. And the article was included in Food Research International in 2022.Formula: C30H26O12 The following contents are mentioned in the article:

The maturity of tea leaves has a great influence on the flavor quality and com. price of tea. In this work, a combined proteomics and metabolomics anal. was applied to investigate the differences in protein expression and metabolites among tea leaves with different maturity. Integrated anal. showed that there were significant differences in 112 nonvolatile components related to the pathways of photosynthesis, glycolysis, tricarboxylic acid cycle, and the biosynthesis of amino acids, phenylpropanoids and flavonoids. The bud had higher expression levels of most enzymes related to the biosynthesis of amino acids, phenylpropanoids, and flavonoids, leading to higher levels of amino acids, most flavanols, and procyanidins compared with the leaves. The 1st leaf showed a higher expression level of flavonol synthase, which produces higher levels of flavonol-3-glycosides. This study offers deep insight into the maturity of tea at both the protein and metabolite levels and provides a guideline for tea manufacturing This study involved multiple reactions and reactants, such as (2R,2’R,3R,3’R,4R)-2,2′-Bis(3,4-dihydroxyphenyl)-[4,8′-bichromane]-3,3′,5,5′,7,7′-hexaol (cas: 29106-49-8Formula: C30H26O12).

(2R,2’R,3R,3’R,4R)-2,2′-Bis(3,4-dihydroxyphenyl)-[4,8′-bichromane]-3,3′,5,5′,7,7′-hexaol (cas: 29106-49-8) 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. 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: C30H26O12

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

COSMO-RS as an effective tool for predicting the physicochemical properties of fragrance raw materials was written by Dupeux, Tristan;Gaudin, Theophile;Marteau-Roussy, Clementine;Aubry, Jean-Marie;Nardello-Rataj, Veronique. And the article was included in Flavour and Fragrance Journal in 2022.Reference of 106-21-8 The following contents are mentioned in the article:

A predictive tool called COSMO-RS, Conductor-Like Screening Model for Real Solvents, based on quantum chem., dielec. continuum models, electrostatics surface interactions, and statistical thermodn., has been used to predict five key physicochem. properties of raw materials used in perfumery industries. The prediction of b.p. (BP), octanol-water partition coefficient (log P), vapor pressure (VP), water solubility (WS), and Henry′s law constant (HLC) of fragrance mols. has been validated with a reference data set of 166 organic compounds Knowing these properties for a fragrance mol. is essential and being able to predict them precisely can be particularly useful in the development of new mols. or in the replacement of controversial mols. regarding safety issues without compromising the overall hedonic accord. Finally, mapping the vapor pressure vs. the Henry′s law constant and the octanol-water partition coefficient consistently predicts the note class of the mols. useful for release comparison of captives. This study involved multiple reactions and reactants, such as 3,7-Dimethyloctan-1-ol (cas: 106-21-8Reference of 106-21-8).

3,7-Dimethyloctan-1-ol (cas: 106-21-8) 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.Reference of 106-21-8

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts