Tag: 100-200

A Nanostructured Moisture-Absorbing Gel for Fast and Large-Scale Passive Dehumidification was written by Dai, Ming;Zhao, Fei;Fan, Juanjuan;Li, Qing;Yang, Ya;Fan, Zhuangjun;Ling, Shengjie;Yu, Haipeng;Liu, Shouxin;Li, Jian;Chen, Wenshuai;Yu, Guihua. And the article was included in Advanced Materials (Weinheim, Germany) in 2022.Recommanded Product: 111-46-6 This article mentions the following:

Dehumidification is significant for environmental sustainability and human health. Traditional dehumidification methods involve significant energy consumption and have neg. impact on the environment. The core challenge is to expose hygroscopic surfaces to the air, and appropriately store the captured water and avoid surface inactivation. Here, a nanostructured moisture-absorbing gel (N-MAG) for passive dehumidification, which consists of a hydrophilic nanocellulose network functionalized by hygroscopic lithium chloride, is reported. The interconnected nanocellulose can transfer the captured water to the internal space of the bulky N-MAG, eliminating water accumulation near the surfaces and hence enabling high-rate moisture absorption. The N-MAG can reduce the relative humidity from 96.7% to 28.7% in 6 h, even if the space is over 2 × 10⁴ times of its own volume The condensed water can be completely confined in the N-MAG, overcoming the problem of environmental pollution. This research brings a new perspective for sustainable humidity management without energy consumption and with pos. environmental footprint. In the experiment, the researchers used many compounds, for example, 2,2′-Oxybis(ethan-1-ol) (cas: 111-46-6Recommanded Product: 111-46-6).

2,2′-Oxybis(ethan-1-ol) (cas: 111-46-6) 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. 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.Recommanded Product: 111-46-6

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

The bacteriostatic effect of erythritol on canine periodontal disease-related bacteria was written by Tochio, T.;Makida, R.;Fujii, T.;Kadota, Y.;Takahashi, M.;Watanabe, A.;Funasaka, K.;Hirooka, Y.;Yasukawa, A.;Kawano, K.. And the article was included in Polish Journal of Veterinary Sciences in 2022.Category: alcohols-buliding-blocks This article mentions the following:

Erythritol helps both prevent and improve periodontal disease and is therefore widely used for dental care in humans. However, only a few studies have investigated the effects of erythritol on periodontal disease in animals. We hypothesized that erythritol could be used to prevent and improve periodontal disease also in canines and investigated the effects of erythritol on canine periodontal disease-related pathogenic bacteria using both in vitro and in vivo methods. The effect of erythritol on the proliferation of Porphyromonas gulae, which is reportedly associated with canine periodontal disease, was investigated in vitro. In addition, a 4-wk intervention trial using an external gel preparation containing 5% erythritol was performed in canines with mild periodontal disease; changes in the microbiota around periodontal lesions were investigated using next-generation sequencing and bioinformatics anal. The growth of P. gulae was significantly suppressed by erythritol in vitro. In the intervention study, the Shannon index, an indicator of the species distribution a-diversity, and the occupancy of several canine periodontal disease – related bacteria (P. gulae, P. cangingivalis) were significantly decreased in periodontal lesions. Based on the results of in vitro and in vivo studies, we conclude that, as in humans, erythritol has bacteriostatic effects against periodontal disease – related bacteria in canines. In the experiment, the researchers used many compounds, for example, (2R,3S)-rel-Butane-1,2,3,4-tetraol (cas: 149-32-6Category: alcohols-buliding-blocks).

(2R,3S)-rel-Butane-1,2,3,4-tetraol (cas: 149-32-6) 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. 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

Chirality-Economy Catalysis: Asymmetric Transfer Hydrogenation of Ketones by Ru-Catalysts of Minimal Stereogenicity was written by Chen, Fumin;He, Dongxu;Chen, Li;Chang, Xiaoyong;Wang, David Zhigang;Xu, Chen;Xing, Xiangyou. And the article was included in ACS Catalysis in 2019.Reference of 171032-87-4 This article mentions the following:

This manuscript describes the design and synthesis of Ru catalysts that feature only a single stereogenic element, yet this minimal chirality resource is demonstrated to be competent for effecting high levels of stereoinduction in the asym. transfer hydrogenation over a broad range of ketone substrates, including those that are not accommodated by known catalyst systems. The single stereogenic center of the (1-pyridine-2-yl)methanamine is the only point-chirality in the catalysts, which simplifies this catalyst system relative to existing literature protocols. In the experiment, the researchers used many compounds, for example, (S)-1-(2-Fluorophenyl)ethanol (cas: 171032-87-4Reference of 171032-87-4).

(S)-1-(2-Fluorophenyl)ethanol (cas: 171032-87-4) 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. 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.Reference of 171032-87-4

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Pyran derivatives. 107. Preparation and reactions of 2-acetyl-3-amino-5-hydroxy-2-cyclohexenones; benzene derivatives from pyrones was written by Eiden, Fritz;Patzelt, Gertrud. And the article was included in Archiv der Pharmazie (Weinheim, Germany) in 1985.Quality Control of 2′,6′-Dihydroxy-4′-methylacetophenone This article mentions the following:

Acetylpyrene I reacted with HNR₂² [NR₂² = NMe₂, NEt₂, NMeCH₂CH₂Ph, piperidino, morpholino, perhydroazepine, 4-(2-pyridyl)-1-piperazinyl, 4-methyl-1-piperazinyl, 4-[3-(trifluoromethyl)phenyl]-1-piperazinyl, 1-piperazinyl] gave aminocyclohexenones II and III and aminophenols IV. NH₃ and 1,2-C₆H₄(NH₂)₂ gave pyridinones V (R = H, 2-H₂NC₆H₄) or VI. The amine group in II (R² = Me) (VII) was replaced by reaction with NH₃, amines, amino acids, and hydrazine derivatives VII cyclized with PhC(:NH)NH₂ or H₂NNHR¹ (R¹ = Ph, Me) to give quinazoline VIII or indazoles IX. Treating II, III, the transamination analogs of VII, VIII, or IX with KOH in EtOH gave the corresponding phenol dehydration products. In the experiment, the researchers used many compounds, for example, 2′,6′-Dihydroxy-4′-methylacetophenone (cas: 1634-34-0Quality Control of 2′,6′-Dihydroxy-4′-methylacetophenone).

2′,6′-Dihydroxy-4′-methylacetophenone (cas: 1634-34-0) belongs to alcohols. Alkyl halides are often synthesized from alcohols, in effect substituting a halogen atom for the hydroxyl group. The most common reactions of alcohols can be classified as oxidation, dehydration, substitution, esterification, and reactions of alkoxides.Quality Control of 2′,6′-Dihydroxy-4′-methylacetophenone

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Cobalt-catalyzed alkoxycarbonylation of ethers: Direct synthesis of α-oxy esters from phenols and alcohols was written by Wang, Le-Cheng;Xu, Jian-Xing;Wu, Xiao-Feng. And the article was included in Journal of Catalysis in 2022.COA of Formula: C7H7ClO This article mentions the following:

A cobalt-catalyzed direct alkoxycarbonylation of ethers (such as THF, 1,4-dioxane, ethoxyethane, etc.) has been accomplished. This new catalytic system allows the use of ethers, important building blocks in organic synthesis, as the carbonylation substrates. A variety of phenols and alcs. ROH was transformed to the corresponding α-oxy ester derivatives ROC(O)R¹ (R¹ = oxolan-2-yl, 1,4-dioxan-2-yl, 1-ethoxyethyl, etc.; R = Ph, naphthalen-2-yl, pyridin-3-yl, adamantan-1-yl, etc.) in high yields with excellent functional group tolerance. In addition, several pharmaceutical and bioactive mol. related compounds were also suitable substrates for this carbonylation process, and the target products were obtained in good yields. In the experiment, the researchers used many compounds, for example, (4-Chlorophenyl)methanol (cas: 873-76-7COA of Formula: C7H7ClO).

(4-Chlorophenyl)methanol (cas: 873-76-7) 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.COA of Formula: C7H7ClO

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Stereoisomeric Tris-BINOL-Menthol Bulky Monophosphites: Synthesis, Characterisation and Application in Rhodium-Catalysed Hydroformylation was written by Felgueiras, Alexandre P.;Rodrigues, Fabio M. S.;Carrilho, Rui M. B.;Cruz, Pedro F.;Rodrigues, Vitor H.;Kegl, Tamas;Kollar, Laszlo;Pereira, Mariette M.. And the article was included in Molecules in 2022.Quality Control of (1R,2S,5R)-2-Isopropyl-5-methylcyclohexanol This article mentions the following:

Four stereoisomeric monoether derivatives, based on axially chiral (R)- or (S)-BINOL bearing a chiral (+)- or (-)-neomenthyloxy group were synthesized and fully characterised by NMR spectroscopy and X-ray crystallog. The resp. tris-monophosphites were thereof prepared and fully characterised. The coordination ability of the new bulky phosphites with Rh(CO)₂(acac), was attested by ³¹P NMR, which presented a doublet in the range of δ = 120 ppm, with a 1J(103Rh-31P) coupling constant of 290 Hz. The new tris-binaphthyl phosphite ligands were further characterised by DFT computational methods, which allowed to calculate an electronic (CEP) parameter of 2083.2 cm-1 and an extremely large cone angle of 345°, decreasing to 265° upon coordination with a metal atom. Furthermore, the monophosphites were applied as ligands in rhodium-catalyzed hydroformylation of styrene, leading to complete conversions in 4 h, 100% chemoselectivity for aldehydes and up to 98% iso-regioselectivity. The Rh(I)/phosphite catalytic system was also highly active and selective in the hydroformylation of disubstituted olefins, including (E)-prop-1-en-1-ylbenzene and prop-1-en-2-ylbenzene. In the experiment, the researchers used many compounds, for example, (1R,2S,5R)-2-Isopropyl-5-methylcyclohexanol (cas: 2216-51-5Quality Control of (1R,2S,5R)-2-Isopropyl-5-methylcyclohexanol).

(1R,2S,5R)-2-Isopropyl-5-methylcyclohexanol (cas: 2216-51-5) 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. The most common reactions of alcohols can be classified as oxidation, dehydration, substitution, esterification, and reactions of alkoxides.Quality Control of (1R,2S,5R)-2-Isopropyl-5-methylcyclohexanol

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Evaluation of Fe and Ru Pincer-Type Complexes as Catalysts for the Racemization of Secondary Benzylic Alcohols was written by Bornschein, Christoph;Gustafson, Karl P. J.;Verho, Oscar;Beller, Matthias;Baeckvall, Jan-E.. And the article was included in Chemistry – A European Journal in 2016.Recommanded Product: 120121-01-9 This article mentions the following:

Fe and Ru pincer-type catalysts are used for the racemization of benzylic alcs. Racemization with the Fe catalyst was achieved within 30 min. under mild reaction conditions, with a catalyst loading as low as 2 mol %. This reaction constitutes the first example of an iron-catalyzed racemization of an alc. The efficiency for racemization of the Fe catalyst and its Ru analog was evaluated for a wide range of sec-benzylic alcs. The com. available Ru complex proved to be highly robust and even tolerated the presence of water in the reaction mixture In the experiment, the researchers used many compounds, for example, (R)-1-(3-Chlorophenyl)ethanol (cas: 120121-01-9Recommanded Product: 120121-01-9).

(R)-1-(3-Chlorophenyl)ethanol (cas: 120121-01-9) belongs to alcohols. Alkyl halides are often synthesized from alcohols, in effect substituting a halogen atom for the hydroxyl group. 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.Recommanded Product: 120121-01-9

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Photolabile ROMP gels using ortho-nitrobenzyl functionalized crosslinkers was written by Hu, Xiaoran;Shi, Junfeng;Thomas, Samuel W. III. And the article was included in Polymer Chemistry in 2015.Application of 60463-12-9 This article mentions the following:

This paper describes a series of four ortho-nitrobenzyl substituted bis(norbornene) crosslinkers that are suitable for the preparation of photoresponsive organogels and hydrogels through ring-opening metathesis polymerization As measured by several techniques-visual inspections, rheol., and release of network-bound polymers-organogels prepared using these four crosslinkers varied in their sensitivity to UV irradiation by about two orders of magnitude. The reactivity of the gels shows qual. correlation with the stability of the intermediate benzylic radicals. Gels with larger crosslink densities required longer UV irradiation time to dissolve than gels with smaller crosslink densities. Together, these results demonstrate how rational changes to the structures of crosslinkers and gels can tune photosensitivity. Finally, we show a proof-of-concept photochem. release experiment of a phys. entrapped fluorescent polymer from a photolabile ROMP hydrogel. In the experiment, the researchers used many compounds, for example, 3-(Hydroxymethyl)-4-nitrophenol (cas: 60463-12-9Application of 60463-12-9).

3-(Hydroxymethyl)-4-nitrophenol (cas: 60463-12-9) 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. 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.Application of 60463-12-9

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Stereoselective Synthesis of Vinylboronates by Rh-Catalyzed Borylation of Stereoisomeric Mixtures was written by Li, Shenhuan;Li, Jie;Xia, Tianlai;Zhao, Wanxiang. And the article was included in Chinese Journal of Chemistry in 2019.Formula: C9H9F3O This article mentions the following:

The stereoselective preparation of vinylboronates via rhodium-catalyzed borylation of E/Z mixtures of vinyl acetates is described, and this method was also extended to synthesis of vinyldiboronates. These transformations feature high functional group compatibility and mild reaction conditions. Control experiments support a mechanism that involved a Rh-catalyzed borylation-isomerization sequence. The isomerization of (Z)-vinylboronates to (E)-isomers was also demonstrated. In the experiment, the researchers used many compounds, for example, 2-(Trifluoromethyl)phenethyl alcohol (cas: 94022-96-5Formula: C9H9F3O).

2-(Trifluoromethyl)phenethyl alcohol (cas: 94022-96-5) 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. Grignard and organolithium reagents are powerful tools for organic synthesis, and the most common products of their reactions are alcohols.Formula: C9H9F3O

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Enantioselective reduction of ortho-substituted acetophenones by bacterial strains isolated from medium enriched with biphenyl or diesel fuel was written by Andrade, Leandro H.;Comasseto, Joao V.;Rodrigues, Debora F.;Pellizari, Vivian H.;Porto, Andre L. M.. And the article was included in Journal of Molecular Catalysis B: Enzymatic in 2005.Recommanded Product: (S)-1-(2-Fluorophenyl)ethanol This article mentions the following:

Application of 21 new bacterial strains from natural environments (coastal plain of Santos and Atlantic Rain Forest, Sao Paulo, Brazil) in the asym. reduction of acetophenone derivatives is described. The bioreduction was carried out with whole bacterial cells leading to (S)-chiral alcs. in up to ≥99% e.e. The (S)-(-)-1-(2-bromophenyl)ethanol was employed in the preparation of chiral tellurium derivatives In the experiment, the researchers used many compounds, for example, (S)-1-(2-Fluorophenyl)ethanol (cas: 171032-87-4Recommanded Product: (S)-1-(2-Fluorophenyl)ethanol).

(S)-1-(2-Fluorophenyl)ethanol (cas: 171032-87-4) 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.Recommanded Product: (S)-1-(2-Fluorophenyl)ethanol

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts