Category: 620-92-8

Selective Oxidation of Alkylarenes to the Aromatic Ketones or Benzaldehydes with Water was written by Zhang, Jin;Du, Jihong;Zhang, Chenyang;Liu, Kun;Yu, Feifei;Yuan, Yongkun;Duan, Baogen;Liu, Renhua. And the article was included in Organic Letters in 2022.Reference of 620-92-8 The following contents are mentioned in the article:

Here a palladium-catalyzed oxidation method for converting alkylarenes into the aromatic ketones or benzaldehydes ArC(O)R¹ [Ar = Ph, 4-MeC₆H₄, 4-HOC₆H₄, etc.; R¹ = H, Ph, 4-ClC₆H₄, etc.] with water as the only oxygen donor was reported. This C-H bond oxidation functionalization did not require other oxidants and hydrogen acceptors, and H₂ was the only byproduct. The oxygen atom introduced into the products was confirmed to be from water by the MS anal. on the product of the ¹⁸O-labeled water reaction. This study involved multiple reactions and reactants, such as 4,4′-Methylenediphenol (cas: 620-92-8Reference of 620-92-8).

4,4′-Methylenediphenol (cas: 620-92-8) belongs to alcohols. Alkyl halides are often synthesized from alcohols, in effect substituting a halogen atom for the hydroxyl group. 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.Reference of 620-92-8

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Ruthenium(II)-catalyzed deoxygenation of ketones was written by Gui, Ruohua;Li, Chao-Jun. And the article was included in Chemical Communications (Cambridge, United Kingdom) in 2022.Name: 4,4′-Methylenediphenol The following contents are mentioned in the article:

The classical Wolff-Kishner reduction plays a key role in organic synthesis to convert carbonyl functionalities into methylene groups; however, it generally requires harsh reaction conditions and a strategy with wider applications demands further development. Herein, a ruthenium-catalyzed Wolff-Kishner type reduction of ketones is developed with 31 examples under mild conditions. This strategy tolerates aryl and alkyl ketones with reactive functional groups including halogens, hydroxyls, carboxylic acid, unsaturated functional groups, and so on. The corresponding methylene products were obtained in 32% to 95% yields while using water or methanol as solvents. This study involved multiple reactions and reactants, such as 4,4′-Methylenediphenol (cas: 620-92-8Name: 4,4′-Methylenediphenol).

4,4′-Methylenediphenol (cas: 620-92-8) 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. 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.Name: 4,4′-Methylenediphenol

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Hexnut[12]arene and its derivatives: Synthesis, host-guest properties, and application as nonporous adaptive crystals was written by Cheng, Jian;Gao, Bingbing;Tang, Hao;Sun, Zhihong;Xu, Linxian;Wang, Lingyun;Cao, Derong. And the article was included in Science China: Chemistry in 2022.SDS of cas: 620-92-8 The following contents are mentioned in the article:

Hexnut[12]arene (HN[12]) and its derivatives, a new class of sixfold macrocyclic arenes, were designed and synthesized in reasonable yield by a one-pot reaction at room temperature using dimethoxymethane as a methylene source. HN[12], which bears a large, sym., and rigid cavity, was easily functionalized at both the methylene bridges and the hydroquinone units. A water-soluble fluorescent HN[12] was synthesized and used as a host to encapsulate benzyl viologen dichloride in water with a high binding affinity of (3.4 ± 0.2) x 106 M-1. The nonporous adaptive crystal (NAC) of HN[12] was found to capture not only inorganic mols. (iodine) but also trace amounts of large organic mols. (basic fuchsine) from water, which greatly expanded the scope of NACs for adsorption. This study involved multiple reactions and reactants, such as 4,4′-Methylenediphenol (cas: 620-92-8SDS of cas: 620-92-8).

4,4′-Methylenediphenol (cas: 620-92-8) 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. Grignard and organolithium reagents are powerful tools for organic synthesis, and the most common products of their reactions are alcohols.SDS of cas: 620-92-8

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Solvent regulation and template-free synthesis of β-cyclodextrin-based microporous organic network nanosheets for ultrafast and efficient removal of aromatic pollutants was written by Cui, Yuan-Yuan;Bi, Yan-Ping;Yang, Cheng-Xiong. And the article was included in Chemical Engineering Journal (Amsterdam, Netherlands) in 2022.Application In Synthesis of 4,4′-Methylenediphenol The following contents are mentioned in the article:

Layer-stacking structures via the template-free synthesis are rare in two-dimensional microporous organic networks (2D MONs). Herein, we report a facile solvent regulation and template-free strategy by tuning the aggregation degree of 2D β-cyclodextrin (CD)-based MONs nanosheets. The 2D MON nanosheets provided larger uptake capacity and faster kinetics than the aggregated CD-MONs, revealing the significance of morphol. control for the removal of pollutants. The prepared 2D CD-MON-DMF gave ultrafast adsorption kinetics and exhibited much larger saturation sorption capacity (327.9 mg g^-1) than previous adsorbents for bisphenol AF. The developed strategy not only provides a novel way to construct 2D MON nanosheets for highly efficient removal of organic pollutants from water but also promotes the utilization of MONs in material and environmental sciences. This study involved multiple reactions and reactants, such as 4,4′-Methylenediphenol (cas: 620-92-8Application In Synthesis of 4,4′-Methylenediphenol).

4,4′-Methylenediphenol (cas: 620-92-8) belongs to alcohols. Alkyl halides are often synthesized from alcohols, in effect substituting a halogen atom for the hydroxyl group. 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.Application In Synthesis of 4,4′-Methylenediphenol

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A simple method for predicting the gas-chromatographic retention indices of phenolic derivatives was written by Pouretedal, Hamid Reza;Jafari, Mohammad. And the article was included in Journal of the Iranian Chemical Society.COA of Formula: C13H12O2 The following contents are mentioned in the article:

A simple approach is proposed to predict the gas-chromatog. retention indexes in nonpolar columns for a wide range of phenolic derivatives, through their mol. structures and independent of temperature data and active phase of column. The new model is based on the number of atoms and some structural moieties which depend on intra- and intermol. interactions. The present method can be easily applied for many kinds of phenolic compounds containing different substituents without using special computer codes, which need expert users. A big pool of the exptl. data (335 compounds) of retention indexes is used to construct the new model (80% for training set and 20% for test set). Different statistical parameters including the coefficient of determination, R2 (= 0.9482), root mean squared error, RMSE (= 89.01), and mean absolute percent error, MAPE (= 4.494), are used to investigate the reliability of the model, through both internal and external validation techniques. This study involved multiple reactions and reactants, such as 4,4′-Methylenediphenol (cas: 620-92-8COA of Formula: C13H12O2).

4,4′-Methylenediphenol (cas: 620-92-8) 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. Grignard and organolithium reagents are powerful tools for organic synthesis, and the most common products of their reactions are alcohols.COA of Formula: C13H12O2

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Hollow fiber membrane-protected amino/hydroxyl bifunctional microporous organic network fiber for solid-phase microextraction of bisphenols A, F, S, and triclosan in breast milk and infant formula was written by Li, Shihuan;Feng, Senwei;Van Schepdael, Ann;Wang, Xu. And the article was included in Food Chemistry in 2022.Recommanded Product: 620-92-8 The following contents are mentioned in the article:

Bisphenols and triclosan have been used in various products, and exposure to these chems. may affect human health. The present study proposes a sensitive method for the determination of bisphenols A, F, S, and triclosan. The fiber was coated by amino/hydroxyl bifunctional microporous organic network and protected by polyvinylidene fluoride hollow fiber membrane for direct immersion solid phase microextraction The limit of detection was 0.005μg/L (μg/kg), and the recoveries were in the range of 76.7% to 107.5% (87.4% to 107.6%) for breast milk (infant formula), with intra-day and inter-day precisions <10.5% (7.3%) and 13.6% (8.4%), resp. Fiber-to-fiber reproducibility of < 9.5% and a lifespan of >100 cycles were obtained. The 95th percentile estimated daily intake of total bisphenols was close to temporary tolerable daily intake for infants fed by human milk, which highlighted the needs for further attention on human exposure to BPA and its substitutes. This study involved multiple reactions and reactants, such as 4,4′-Methylenediphenol (cas: 620-92-8Recommanded Product: 620-92-8).

4,4′-Methylenediphenol (cas: 620-92-8) 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.Recommanded Product: 620-92-8

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BPA and its analogs increase oxidative stress levels in in vitro cultured granulosa cells by altering anti-oxidant enzymes expression was written by Sabry, R.;Nguyen, M.;Younes, S.;Favetta, L. A.. And the article was included in Molecular and Cellular Endocrinology in 2022.Formula: C13H12O2 The following contents are mentioned in the article:

Bisphenol A is a widespread endocrine disruptor with numerous effects on reproductive functions. Limitations on BPA in manufacturing has prompted the use of analogs, such as BPS and BPF, with limited research on their safety. The objective of this study was to evaluate the effects of BPA and its analogs on oxidative stress levels within bovine granulosa cells and to measure the expression of key antioxidant genes. Results indicate that BPA and BPF reduce cell viability and induce mitochondrial dysfunction and all three bisphenols increased production of reactive oxygen species as early as 12h post exposure. BPA increased the levels of antioxidants at 12h at the mRNA and protein levels, while these results were not significant at 48h. These results together suggest that BPA and its analogs can induce oxidative stress within bovine granulosa cells, although not necessarily through common mechanisms. Therefore, the use of BPA analogs may have to be re-considered. This study involved multiple reactions and reactants, such as 4,4′-Methylenediphenol (cas: 620-92-8Formula: C13H12O2).

4,4′-Methylenediphenol (cas: 620-92-8) 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. 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.Formula: C13H12O2

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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

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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

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Microplastics, bisphenols, phthalates and pesticides in odontocete species in the Macaronesian Region (Eastern North Atlantic) was written by Montoto-Martinez, Tania;De la Fuente, Jesus;Puig-Lozano, Raquel;Marques, Nuno;Arbelo, Manuel;Hernandez-Brito, Jose Joaquin;Fernandez, Antonio;Gelado-Caballero, Maria Dolores. And the article was included in Marine Pollution Bulletin in 2021.Reference of 620-92-8 The following contents are mentioned in the article:

The gastrointestinal contents of twelve individuals from six odontocete species that stranded between 2018 and 2019 in the Macaronesian Region (Eastern North Atlantic) were examined for the presence of marine debris. In addition, concentrations of eleven organic persistent contaminants (nonylphenols, bisphenols, phthalates and pesticides) were analyzed in muscle samples by liquid chromatog. No particles larger than 5 mm were found, except for two plastic labels that were found on the same dolphin. On the contrary, all animals contained microplastics of diverse sizes, most of them being fibers (98.06%, n = 708). The predominant detected pollutants were bisphenols (4-984 ng/g) and DEHP (102-1533 ng/g). Also, except for two individuals, all animals had pesticide levels in their tissues. This work has allowed the establishment of a protocol for the study of microplastic ingestion in cetaceans, and tests the potential of microRaman to improve the understanding of microplastic alteration processes. This study involved multiple reactions and reactants, such as 4,4′-Methylenediphenol (cas: 620-92-8Reference of 620-92-8).

4,4′-Methylenediphenol (cas: 620-92-8) belongs to alcohols. Because alcohols are easily synthesized and easily transformed into other compounds, they serve as important intermediates in organic synthesis. The most common reactions of alcohols can be classified as oxidation, dehydration, substitution, esterification, and reactions of alkoxides.Reference of 620-92-8

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Alcohol – Wikipedia,
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