Category: alcohols-buliding-blocks

Lhotska, Ivona published the artcilePreparation of citrinin-selective molecularly imprinted polymer and its use for on-line solid-phase extraction coupled to liquid chromatography, Quality Control of 86-48-6, the publication is Analytical and Bioanalytical Chemistry (2019), 411(11), 2395-2404, database is CAplus and MEDLINE.

A new selective molecularly imprinted polymer has been prepared and used for extraction in online SPE-HPLC to achieve the selective determination of citrinin. Four different imprinted polymers varying in combinations of components were prepared by bulk polymerization and evaluated in terms of binding capacity and selectivity. Imprinted polymer prepared from a mixture comprising 1-hydoxy-2-naphtoic acid as the template mol., acrylamide as the structural monomer, ethylene dimethacrylate as the cross-linker (in a molar ratio of 1:4:16), and acetonitrile as the porogenic solvent exhibited the best properties. The selectivity of this sorbent was confirmed by comparison with the non-imprinted counterpart prepared using the same polymerization carried out in the absence of template. Imprinted polymer was packed in a 20 × 3 mm i.d. steel cartridge and coupled to the online SPE-HPLC system through a six-port switching valve. The method for determination of citrinin including the online extraction step was then developed and validated. The sample in the form of methanolic extract was loaded, cleaned, and preconcd. in the imprinted SPE cartridge. Subsequent separation of citrinin from residual interferences was achieved using the anal. column Kinetex Biphenyl 100 × 4.6 mm i.d., 5 μm particle size, and fluorescence detection (Ex 335, Em 500 nm). The total anal. time was only 9.50 min. Our fully validated method was also applied to anal. of food supplements based on red yeast rice extracts, the control of which is implemented in European legislation. Only minor yet acceptable contamination was found in tested samples.

Analytical and Bioanalytical Chemistry published new progress about 86-48-6. 86-48-6 belongs to alcohols-buliding-blocks, auxiliary class Organic Pigment,Natural product, name is 1-Hydroxy-2-naphthoic acid, and the molecular formula is C11H8O3, Quality Control of 86-48-6.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Nikishin, G. I. published the artcileOxidative splitting of 1-methylcycloalkanols by the lead(IV) acetate-copper(II) acetate system, Related Products of alcohols-buliding-blocks, the publication is Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya (1979), 1548-53, database is CAplus.

Oxidative cleavage of title alcs. I (n = 1-4) with Pb(OAc)₄-Cu(OAc)₂ gave 76-99% MeCO(CH₂)_nCH:CH₂ with 20-49% I conversion via the intermediate MeCO(CH₂)_n+2â€?radical. The reactivity of I decreased in the order of n 1 > 2 > 4 > 3.

Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya published new progress about 20117-47-9. 20117-47-9 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic cyclic hydrocarbon,Alcohol, name is 1-Methylcyclobutan-1-ol, and the molecular formula is C5H10O, Related Products of alcohols-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Kiraz, Asli Ozturk published the artcileTheoretical investigation of triazine based a star shape pyrrole monomer, Quality Control of 23351-09-9, the publication is Journal of Macromolecular Science, Part A: Pure and Applied Chemistry (2017), 54(1), 16-23, database is CAplus.

In this work, we report a comprehensive theor. investigation of electroactive star shaped pyrrole functionalized triazine monomer with two main goals. First goal of this work is to explore the phys. and chem. properties of the monomer, then to investigate correlation between the exptl. and the theor. properties of monomer. The scale factor which is calculated from B3LYP/cc-pVDZ was determined as 0.985 for FT-IR and it is an important and reliable contribution to the literature. It is determined that the most appropriate basis set for this mol. The other novel objective of this research is to investigate temperature effect on displacement of chlorine atoms in 2,4,6-trichloro-1,3,5-triazine. This method applied for the first time in the literature for triazines is especially crucial to the synthesis of unsym. triazines.

Journal of Macromolecular Science, Part A: Pure and Applied Chemistry published new progress about 23351-09-9. 23351-09-9 belongs to alcohols-buliding-blocks, auxiliary class Pyrrole,Benzene,Alcohol, name is 4-(1H-Pyrrol-1-yl)phenol, and the molecular formula is C10H9NO, Quality Control of 23351-09-9.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Motokura, Ken published the artcileCopper-Catalyzed Formic Acid Synthesis from CO₂ with Hydrosilanes and H₂O, Computed Properties of 597-52-4, the publication is Organic Letters (2012), 14(10), 2642-2645, database is CAplus and MEDLINE.

A copper-catalyzed formic acid synthesis from CO₂ with hydrosilanes has been accomplished. The Cu(OAc)₂·H₂O-1,2-bis(diphenylphosphino)benzene system is highly effective for the formic acid synthesis under 1 atm of CO₂. The TON value approached 8100 in 6 h. The reaction pathway was revealed by in situ NMR anal. and isotopic experiments

Organic Letters published new progress about 597-52-4. 597-52-4 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic Chain, name is Triethylsilanol, and the molecular formula is C6H16OSi, Computed Properties of 597-52-4.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Kemnitzer, William published the artcileDiscovery of 4-aryl-4H-chromenes as a new series of apoptosis inducers using a cell- and caspase-based high-throughput screening assay. 2. Structure-activity relationships of the 7- and 5-, 6-, 8-positions, Recommanded Product: 3-Morpholinophenol, the publication is Bioorganic & Medicinal Chemistry Letters (2005), 15(21), 4745-4751, database is CAplus and MEDLINE.

As a continuation of our efforts to discover and develop the apoptosis inducing 4-aryl-4H-chromenes as novel anticancer agents, the authors explored the SAR of 4-aryl-4H-chromenes with modifications at the 7- and 5-, 6-, 8-positions. It was found that a small hydrophobic group, such as NMe₂, NH₂, NHEt, and OMe, is preferred at the 7-position. Di-substitution at either the 5,7-positions or the 6,7-positions generally led to a large decrease in potency. Di-substitution at the 7,8-positions, in general, was found to result in potent compounds 7-NMe₂, 7-NHEt, 7-OMe, and 7,8-di-NH₂ analogs were found to have similar SAR for the 4-aryl group, and several 7-substituted and 7,8-di-substituted analogs were found to have similar potencies as the lead compound MX58151 (I) both as caspase activators and inhibitors of cell proliferation.

Bioorganic & Medicinal Chemistry Letters published new progress about 27292-49-5. 27292-49-5 belongs to alcohols-buliding-blocks, auxiliary class Morpholine,Benzene,Phenol, name is 3-Morpholinophenol, and the molecular formula is C10H13NO2, Recommanded Product: 3-Morpholinophenol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Ochowiak, M. published the artcileThe thermostated medical jet nebulizer: Aerosol characteristics, Quality Control of 23828-92-4, the publication is International Journal of Pharmaceutics (Amsterdam, Netherlands) (2019), 118475, database is CAplus and MEDLINE.

The sudden expansion of gas at the outlet of the jet (pneumatic) nebulizer significantly reduces the temperature of the solution, which may provoke bronchospasm, therefore it is recommended to use modern pneumatic inhalers equipped with a thermostat or a universal thermal attachment that allow to obtain a higher temperature aerosol, i.e. thermo-aerosol. The research was carried out for model Newtonian fluids. The droplet diameters of the aerosol spray were investigated using a Spraytec aerosol particle size measurement system. Anal. of the obtained results showed that the increase in solution viscosity caused a decrease in mean droplet diameters and prolonged nebulization time. The anal. of exptl. data made it possible to propose a correlation equation describing the mean diameter of the droplets depending on the properties of the liquid and the flow conditions in the thermostated medical nebulizer. The obtained data contributes to a better understanding of the complex liquid atomization process and can be helpful in the design of medical nebulizers and pharmaceutical preparations

International Journal of Pharmaceutics (Amsterdam, Netherlands) published new progress about 23828-92-4. 23828-92-4 belongs to alcohols-buliding-blocks, auxiliary class Membrane Transporter/Ion Channel,Sodium Channel, name is trans-4-((2-Amino-3,5-dibromobenzyl)amino)cyclohexanol hydrochloride, and the molecular formula is C13H19Br2ClN2O, Quality Control of 23828-92-4.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Wojtunik-Kulesza, Karolina published the artcilePreliminary Studies on the Effect of Simulated Digestion on the Antioxidant Activity of Monoterpenes, HPLC of Formula: 106-25-2, the publication is Chemistry & Biodiversity (2022), 19(4), e202100995, database is CAplus and MEDLINE.

One of several possible ways of predicting substance bioactivity under in vivo conditions is through simulated studies based on conditions comparable to those within the organism. Having regards to pH and digestive enzymes, such an approach is through simulated digestion. Simulated studies allow gaining an understanding of physiol. conditions and a prediction of compound behavior. The presented studies are based on simulated digestion (SD) to which selected monoterpenes (γ-terpinene, α-terpinene, α-phellandrene, carvone, menthone, isopulegol, α-pinene, β-pinene, terpinene-4-ol, linalool, eucalyptol, p-cymene, citral, citronellal) have been subjected. The procedure included changes pH (2.0 and 8.5) and digestive enzymes (pepsine in gastric stage and pancreatin in duodenal stage) to better understand what goes on within the gastro-intestinal tract. The changes were observed for gastric and duodenal stages, as well as for two phases: oil and water. Obtained results revealed both pos. and neg. influence of gastrointestinal conditions on monoterpenes antioxidant activity. However, pos. impact prevailed (γ-terpinene, citral, eucalyptol, isopulegol, α-pinene). The differentiation in activity can be explained by solubility in oil/water phases and the biotransformation of studied compounds

Chemistry & Biodiversity published new progress about 106-25-2. 106-25-2 belongs to alcohols-buliding-blocks, auxiliary class Natural product, name is cis-3,7-Dimethyl-2,6-Octadien-1-Ol, and the molecular formula is C6H10F3NO, HPLC of Formula: 106-25-2.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Meininger, Daniel J. published the artcileSynthesis of tetraphenylporphyrinate manganese(III) siloxides by silyl group transfer from silanethiols, SDS of cas: 17877-23-5, the publication is Journal of Coordination Chemistry (2016), 69(11-13), 1970-1978, database is CAplus.

Reaction of [Mn(OAc)(TPP)] (TPP = dianion of meso-tetraphenylporphine) with both HSSiⁱPr₃ and HSSiPh₃ in the presence of air gives the corresponding siloxide complexes, [Mn(OSiR₃)(TPP)] (R = ⁱPr, Ph), via silyl group transfer from S to O. The new compounds were fully characterized in solution and the solid state and represent rare examples of Mn(III) porphyrinates containing Lewis basic axial ligands. X-ray crystallog. analyses of both complexes reveal very short Mn-O bond distances consistent with the presence of a siloxide ligand. Investigations of the reaction pathway are consistent with initial reduction of [Mn(OAc)(TPP)] to [Mn^II(TPP)] by the silanethiol. Subsequent aerobic oxidation of the reaction mixture is proposed to generate a Mn(III) porphyrinate and the corresponding silanol, which combine to yield the observed siloxide complex. These findings stand in sharp contrast to those of iron(III) porphyrinates, where silanethiolate complexes are stable.

Journal of Coordination Chemistry published new progress about 17877-23-5. 17877-23-5 belongs to alcohols-buliding-blocks, auxiliary class Protection and Derivatization Reagent, name is Triisopropylsilanol, and the molecular formula is C9H22OSi, SDS of cas: 17877-23-5.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Kraetzschmar, Felix published the artcileSelenium-Catalyzed C(sp³)-H Acyloxylation: Application in the Expedient Synthesis of Isobenzofuranones, Name: 4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-ol, the publication is Chemistry – A European Journal (2015), 21(19), 7030-7034, database is CAplus and MEDLINE.

Oxidative Se-catalyzed C(sp³)-H bond acyloxylation has been used to construct a diverse array of isobenzofuranones from simple ortho-allyl benzoic acid derivatives The synthetic procedure employs mild reaction conditions and gives high chemoselectivity enabled by an inexpensive organodiselane catalyst. E.g., in presence of N-fluorobenzenesulfonimide and PhSeSePh, C(sp³)-H acyloxylation of o-allylated benzoic acid (I) gave 81% isobenzofuranone derivative (II). The presented approach offers a new synthetic pathway toward the core structures of phthalide natural products.

Chemistry – A European Journal published new progress about 25240-59-9. 25240-59-9 belongs to alcohols-buliding-blocks, auxiliary class Boronic acid and ester,Boronic Acids,Boronate Esters, name is 4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-ol, and the molecular formula is C6H13BO3, Name: 4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-ol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Hori, Mikio published the artcileReactivities of heteroaromatic cations containing a group VIB element in nucleophilic reactions. Reactions of 9-phenyl-xanthylium, -thioxanthylium, and -selenoxanthylium salts with amines, sodium phenolate, and sodium benzenethiolate, Synthetic Route of 596-38-3, the publication is Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999) (1988), 2271-6, database is CAplus.

Addition of amines RH (R = morpholino, piperidino, NEt₂, 4-MeNHC₆H₄, 4-Me₂NC₆H₄) to 9-phenylchalcogenoxanthylium perchlorates I (X = O, S) gave the expected addition products II (X = O, S; R = same) in 91-98% yields. Addition of PhNH₂ or PhONa to I (X = O, S, Se) gave mixtures of I (X = O, S, Se; R = NHPh, OPh, 4-H₂NC₆H₄, 4-HOC₆H₄) and 1:2 addition products III (X¹ = NH, O). II (R = NHPh) underwent Hofmann-Martius rearrangement to II (R = 4-H₂NC₆H₄). III (X¹ = O) underwent cleavage with HCl to give II (R = OH) and II (R = 4-HOC₆H₄). Addition of PhSNa to I (X = O, S, Se) gave only II (R = SPh).

Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999) published new progress about 596-38-3. 596-38-3 belongs to alcohols-buliding-blocks, auxiliary class Other Aromatic Heterocyclic,Benzene,Alcohol, name is 9-Phenyl-9H-xanthen-9-ol, and the molecular formula is C19H14O2, Synthetic Route of 596-38-3.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts