Tag: 100-200

Synthesis of menthol from citronellal over supported Ru- and Pt-catalysts in continuous flow was written by Azkaar, Muhammad;Maki-Arvela, Paivi;Vajglova, Zuzana;Fedorov, Vyacheslav;Kumar, Narendra;Hupa, Leena;Hemming, Jarl;Peurla, Markus;Aho, Atte;Murzin, Dmitry Yu. And the article was included in Reaction Chemistry & Engineering in 2019.Quality Control of 3,7-Dimethyloctan-1-ol The following contents are mentioned in the article:

One-pot menthol synthesis from citronellal in a trickle bed reactor was investigated using Ru/H-beta-300 zeolite extrudates without any binder and Pt- and Ru-extrudates containing 70 wt% H-beta-25 zeolites and 30 wt% bentonite binder using different methods of metal loading on the extrudates. The catalytic results were correlated with the physico-chem. properties of bifunctional zeolite-based extrudates. The conversion of citronellal to menthol was nearly the same for Pt extrudates being independent of catalyst acidity or the metal particle size. Ru extrudates also exhibited similar conversion levels as a function of time-onstream, except for very mildly acidic Ru/beta-300 extrudates, which gave much lower conversion. Pt extrudates showed better stability with time on stream in comparison with Ru extrudates. The best catalyst giving the highest menthol yield and a low amount of acyclic hydrogenation products was Ru-beta-bentonite extrudates where Ru was located randomly in the mixture of 70% H-beta-25 and 30% bentonite binder. Hydrogenation was more prominent for Pt than for Ru catalysts, most probably due to their higher hydrogenation ability. Stereoselectivity to menthol varied in the trickle bed reactor in the range of 67 to 73%. In a batch reactor for Ru- and Pt-catalysts independent of support acidity, it was in the range of 70-71%. The reuse of Ru/H-beta-300 extrudates was successfully demonstrated. This study involved multiple reactions and reactants, such as 3,7-Dimethyloctan-1-ol (cas: 106-21-8Quality Control of 3,7-Dimethyloctan-1-ol).

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. Grignard and organolithium reagents are powerful tools for organic synthesis, and the most common products of their reactions are alcohols.Quality Control of 3,7-Dimethyloctan-1-ol

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Novel Inhibitors of DNA Repair Enzyme TDP1 Combining Monoterpenoid and Adamantane Fragments was written by Mozhaitsev, Evgenii S.;Zakharenko, Alexandra L.;Suslov, Evgeniy V.;Korchagina, Dina V.;Zakharova, Olga D.;Vasil’eva, Inna A.;Chepanova, Arina A.;Black, Ellena;Patel, Jinal;Chand, Raina;Reynisson, Johannes;Leung, Ivanhoe K. H.;Volcho, Konstantin P.;Salakhutdinov, Nariman F.;Lavrik, Olga I.. And the article was included in Anti-Cancer Agents in Medicinal Chemistry in 2019.Product Details of 106-21-8 The following contents are mentioned in the article:

The DNA repair enzyme tyrosyl-DNA-phosphodiesterase 1 (TDP1) is a current inhibition target to improve the efficacy of cancer chemotherapy. Previous studies showed that compounds combining adamantane and monoterpenoid fragments are active against TDP1 enzyme. This investigation is focused on the synthesis of monoterpenoid derived esters of 1-adamantane carboxylic acid as TDP1 inhibitors. New esters were synthesized by the interaction between 1-adamantane carboxylic acid chloride and monoterpenoid alcs. The esters were tested against TDP1 and its binding to the enzyme was modeling. 13 Novel ester-based TDP1 inhibitors were synthesized with yields of 21-94%; of these, nine esters had not been previously described. A number of the esters were found to inhibit TDP1, with IC₅₀ values ranging from 0.86-4.08μM. Mol. modeling against the TDP1 crystal structure showed a good fit of the active esters in the catalytic pocket, explaining their potency. A non-toxic dose of ester, containing a 3,7-dimethyloctanol fragment, was found to enhance the cytotoxic effect of topotecan, a clin. used anti-cancer drug, against the human lung adenocarcinoma cell line A549. The esters synthesized were found to be active against TDP1 in the lower micromolar concentration range, with these findings being corroborated by mol. modeling. Simultaneous action of the ester synthesized from 3,7-dimethyloctanol-1 and topotecan revealed a synergistic effect. This study involved multiple reactions and reactants, such as 3,7-Dimethyloctan-1-ol (cas: 106-21-8Product Details of 106-21-8).

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

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Alcohol – Wikipedia,
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Chemometric analysis reveals links in the formation of fragrant bio-molecules during agarwood (Aquilaria malaccensis) and fungal interactions was written by Sen, Supriyo;Dehingia, Madhusmita;Talukdar, Narayan Chandra;Khan, Mojibur. And the article was included in Scientific Reports in 2017.Formula: C9H20O2 The following contents are mentioned in the article:

Fragrant agarwood, arguably the costliest wood in the world, is formed by plant-fungal interactions in Aquilaria spp. However, very little is known about this fragrant outcome of interaction. Therefore, mimicking the ancient traditions of agarwood production in Assam (Northeast India), a chemometric assessment of the agarwood-fungus interaction was made by chem. profiling (GC-MS) coupled with statistical anal. (principal component, correlation network anal.) across three platforms, viz. callus, juvenile plants and resinous wood-chips with an associated Fusarium. In the study of callus-fungus interaction, increased accumulation of key aroma compounds such as pentatriacontane {fold change (log2FC) = 3.47}, 17-pentatriacontene (log2FC = 2.95), tetradecane, 2-methyl- (log2FC = 1.10) over callus and activation of pathways related to defense and secondary metabolism indicated links to aroma production Study on fungal interactions in juvenile plants and resinous wood-chips indicated formation of terpenoid precursors (e.g. farnesol, geranylgeraniol acetate) and agarwood sesquiterpenes (e.g. agarospirol, γ-eudesmol). Correlation network anal. revealed the possible regulation of sesquiterpene biosynthesis involving squalene. Also a direct role of fungus in aroma (e.g. dodecane, 4-methyl-, tetracosane) was highlighted. Appearance of fragrant mols. unknown to agarwood during interaction featured as a new possibility for future research. This study involved multiple reactions and reactants, such as 2-Butyl-2-ethylpropane-1,3-diol (cas: 115-84-4Formula: C9H20O2).

2-Butyl-2-ethylpropane-1,3-diol (cas: 115-84-4) 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. 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.Formula: C9H20O2

Referemce:
Alcohol – Wikipedia,
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Self-Organization and Charge Transport Properties of Selenium and Tellurium Analogues of Polythiophene was written by Ye, Shuyang;Janasz, Lukasz;Zajaczkowski, Wojciech;Manion, Joseph G.;Mondal, Anirban;Marszalek, Tomasz;Andrienko, Denis;Muellen, Klaus;Pisula, Wojciech;Seferos, Dwight S.. And the article was included in Macromolecular Rapid Communications in 2019.Electric Literature of C10H22O The following contents are mentioned in the article:

A series of conjugated polymers comprising polythiophene, polyselenophene, and polytellurophene with branched 3,7-dimethyloctyl side chains, well-matched mol. weight, dispersity, and regioregularity is synthesized. The ionization potential is found to vary from 5.14 to 5.32 eV, with polytellurophene having the lowest potential. Field-effect transistors based on these materials exhibit distinct hole transport mobility that varies by nearly three orders of magnitude, with polytellurophene having the highest mobility (2.5 × 10^-2 cm² V^-1 s^-1). The large difference in mobility demonstrates the significant impact of heteroatom substitution. Although the series of polymers are very similar in structure, their solid-state properties are different. While the thin film microstructure of polythiophene and polyselenophene is identical, polytellurophene reveals globular features in the film topog. Polytellurophenes also appear to be the least crystalline, even though their charge transport properties are superior to other samples. The torsional barrier and degree of planarity between repeat units increase as one moves down group-16 elements. These studies show how a single atom in a polymer chain can have a substantial influence on the bulk properties of a material, and that heavy group-16 atoms have a pos. influence on charge transport properties when all other variables are kept unchanged. This study involved multiple reactions and reactants, such as 3,7-Dimethyloctan-1-ol (cas: 106-21-8Electric Literature of C10H22O).

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. 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.Electric Literature of C10H22O

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Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Hydrogenation of Citral on Pt/SiO₂ Catalysts: Effect of Sn Addition and Type of Solvent was written by Barrales-Cortes, C. A.;Perez-Pastenes, H.;Pina-Victoria, J. C.;Viveros-Garcia, T.. And the article was included in Topics in Catalysis in 2020.Reference of 106-21-8 The following contents are mentioned in the article:

This work deals with the liquid-phase hydrogenation of citral over Pt monometallic and PtSn bimetallic catalysts supported on com. silica. Bimetallic catalysts contain different Sn/Pt molar ratio of 0.5, 1.0 and 1.5. Cyclohexane or 2-propanol were used as solvent. The catalysts were characterized by N₂-physisorption, XRD, NH₃-TPD, H₂-chemisorption, and TPR. Both XRD and TPR results showed the formation of PtSn and Pt₃Sn. The proportion of Pt-Sn alloys was related to the Sn/Pt molar ratio: the greater the Sn/Pt molar ratio, the greater the amount of PtSn alloy species. The amount of these species was related to the catalytic activity and selectivity in the hydrogenation of citral. Pt monometallic catalysts showed a high initial catalytic activity with high selectivity to citronellal. Bimetallic catalysts exhibited high activity and selectivity to unsaturated alcs. as geraniol and nerol. With cyclohexane as solvent, a greater amount of Pt₃Sn species promote consecutive hydrogenations, and with a greater amount of PtSn alloy the formation of compounds related to cyclization of citronellal was observed The results showed that using a balanced amount of species (Pt₃Sn and PtSn) and 2-propanol as solvent, a synergic effect that promotes high activity and selectivity to geraniol and nerol was observed maintaining the same levels of selectivity along reaction time. 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. 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.Reference of 106-21-8

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Functionalized alkenyl side chains: a feasible strategy to improve charge transport and photovoltaic performance was written by Zheng, Bing;Liu, Juan;Pan, Xuexue;Zhang, Yu;Wang, Zaiyu;Liu, Feng;Wan, Meixiu;Huo, Lijun. And the article was included in Journal of Materials Chemistry in 2020.Application of 106-21-8 The following contents are mentioned in the article:

To pursue effective charge transport and high fill factor (FF) in photovoltaic devices, adopting ordered polymers with enhanced hole mobility is greatly desired. Currently, a popular strategy in improving charge transport has been applied by enforcing the coplanarity of fused-ring conjugated structures. However, their synthetic complexity hinders their further development. Here, an effective strategy is successfully developed to introduce soluble alkenyl side chains in D-A type photovoltaic polymer backbones to improve the charge transport ability and photovoltaic performance. The introduction of the trans-vinylene (CH=CH) linkage in alkenyl side chains strengthens the polymeric crystalline properties and charge transport ability, and further improves the photovoltaic performance. Meanwhile, a high FF of 0.73 can still be obtained for a device with a film thickness of 200 nm. The low cost, feasible chem. strategy could potentially be applied for other thickness-insensitive organic photovoltaic materials design. 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. 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.Application of 106-21-8

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Evaluation of the antioxidant capacity, volatile composition and phenolic content of hybrid Vitis vinifera L. varieties sweet sapphire and sweet surprise was written by de Freitas Laiber Pascoal, Gabriela;de Almeida Sousa Cruz, Marta Angela;Pimentel de Abreu, Joel;Santos, Millena Cristina Barros;Bernardes Fanaro, Gustavo;Junior, Mario Roberto Marostica;Freitas Silva, Otniel;Moreira, Ricardo Felipe Alves;Cameron, Luiz Claudio;Simoes Larraz Ferreira, Mariana;Teodoro, Anderson Junger. And the article was included in Food Chemistry in 2022.Related Products of 106-21-8 The following contents are mentioned in the article:

Bioactive compounds were extracted using two different extraction solvents (acetone and water) from pulp and whole grape berries derived from hybrid Vitis vinifera L. varieties Sweet sapphire (SP) and Sweet surprise (SU) and were characterised based on a comprehensive metabolomic approach by chromatog. coupled with mass spectrometry (UPLC-QTOF-MSE and GC-FID/MS). GC-FID/MS anal. was performed with two different extraction methods (solvent extraction method and solid-phase extraction). Anthocyanins were characterised and quantified by HPLC-UV. The antioxidant potential was assessed by different assays. SP acetone extract from grape skin had the highest mean to DPPH, FRAP, ORAC and phenolic content SP samples, also showed higher anthocyanin content. Globally, 87 phenolic compounds were identified. The relative quantification by UPLC-MSE showed flavonoids the most abundant class. Forty two compounds were found in the volatile fraction of SU, while only thirty one volatile compounds were found in the SP samples. This study involved multiple reactions and reactants, such as 3,7-Dimethyloctan-1-ol (cas: 106-21-8Related Products of 106-21-8).

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

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Extraction of boric acid with aliphatic 1,3-diols and other chelating agents was written by Egneus, Birgitta;Uppstrom, Leif. And the article was included in Analytica Chimica Acta in 1973.Application of 115-84-4 The following contents are mentioned in the article:

Some 40 compounds were investigated with reference to their boric acid extraction properties. Preliminary tests showed that aliphatic 1,3-diols with at least 6 C atoms possess superior extraction qualities compared to diketones, hydroxyketones, hydroxyamines, and other species investigated. The 1,3-diols were further studied with attention to size and steric configuration. The extraction equilibrium involved were investigated for 2,2-diphenylpropanediol-1,3. The constants derived showed that this diol, in spite of its large hydrophobic groups, has a smaller reaction constant than the previously investigated 2,2-diethylpropanediol-1,3 and 2-ethylhexanediol-1,3. The extraction capacity has a maximum for 1,3-diols with 8-9 C atoms. The largest B distribution was obtained with 2,2,4-trimethylpentanediol-1,3, which seems to form a very stable ester with boric acid in CHCl3 at room temperature The ester formation is supported by NMR and ir spectra. The effect of geminal substituents in the 2-position is discussed. This study involved multiple reactions and reactants, such as 2-Butyl-2-ethylpropane-1,3-diol (cas: 115-84-4Application of 115-84-4).

2-Butyl-2-ethylpropane-1,3-diol (cas: 115-84-4) 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. 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.Application of 115-84-4

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Study on volatile markers of pasta quality using GC-MS and a peptide based gas sensor array was written by Gaggiotti, Sara;Shkembi, Blerina;Sacchetti, Giampiero;Compagnone, Dario. And the article was included in LWT–Food Science and Technology in 2019.Safety of 3,7-Dimethyloctan-1-ol The following contents are mentioned in the article:

Headspace GC-MS (gas chromatog.-mass spectrometry) and peptide based gas sensor array (E-nose) anal. were performed to evaluate the volatile fraction of durum wheat pasta samples of different com. value and furosine content. A clear discrimination among high-price and low price samples of pasta was achieved using a simple PCA (Principal Component Anal.) of GC-MS dataset. This was attributed to the quality of semolina used in the process. Linear discriminant anal. (LDA) allowed discrimination among low or high furosine content in the samples. The peptide based e-nose was tested initially on a set of pure key volatiles found in GC-MS anal. and then on pasta samples. Discrimination of pasta samples having different com. value was achieved. This work demonstrates that volatiles can be used to determine the quality of pasta with respect to semolina and thermal treatment. Moreover, the peptide-based e-nose represents a useful tool alternative to GC-MS to detect off-flavours and quality of the semolina in pasta. This study involved multiple reactions and reactants, such as 3,7-Dimethyloctan-1-ol (cas: 106-21-8Safety of 3,7-Dimethyloctan-1-ol).

3,7-Dimethyloctan-1-ol (cas: 106-21-8) belongs to alcohols. Because alcohols are easily synthesized and easily transformed into other compounds, they serve as important intermediates in organic synthesis. 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.Safety of 3,7-Dimethyloctan-1-ol

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Nonionic diol-modified UV-curable polyurethane dispersions: preparation and characterization was written by Mishra, Vikash K.;Patel, Kalpesh I.. And the article was included in Journal of Dispersion Science and Technology in 2015.Application In Synthesis of 2-Butyl-2-ethylpropane-1,3-diol The following contents are mentioned in the article:

A series of novel water-based UV-curable polyurethane dispersions (UV-PUDs) were synthesized by acetone process with anionic and nonionic stabilization in combination, which can address the requirements of volatile organic compounds (VOCs) directives for both indoor and outdoor applications. The nonionic stabilization was introduced in structure to improve electrolyte stability, shear stability, freeze/thaw stability, etc. The structure of UV-PUDs were characterized by Fourier transform IR spectroscopy. Mol. weight and mol. weight distribution was characterized by gel permeation chromatog. Particle size was characterized by particle size analyzer. The thermal stability of the cured films were characterized by thermogravimetric anal., and their performance properties were measured by standard methods. The obtained dispersions were stable for >8 mo. It was found that both combinations of anionic and nonionic provide better colloidal stability against electrolytes and shear stability along with comparable performance properties. This study involved multiple reactions and reactants, such as 2-Butyl-2-ethylpropane-1,3-diol (cas: 115-84-4Application In Synthesis of 2-Butyl-2-ethylpropane-1,3-diol).

2-Butyl-2-ethylpropane-1,3-diol (cas: 115-84-4) belongs to alcohols. Because alcohols are easily synthesized and easily transformed into other compounds, they serve as important intermediates in organic synthesis. Grignard and organolithium reagents are powerful tools for organic synthesis, and the most common products of their reactions are alcohols.Application In Synthesis of 2-Butyl-2-ethylpropane-1,3-diol

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts