Author: tianli

Nie, Hui-Jun published the artcileRapid and halide compatible synthesis of 2-N-substituted indazolone derivatives via photochemical cyclization in aqueous media, Quality Control of 1043416-40-5, the publication is RSC Advances (2019), 9(23), 13249-13253, database is CAplus and MEDLINE.

A rapid and efficient approach was developed for the synthesis of 2-N-substituted indazolones I [R = H, 5-Br, 6-CF₃, etc.; R¹ = t-Bu, c-pentyl, Bn, etc.] via photochem. cyclization of o-nitrobenzyl alcs. and primary amines in aqueous media at room temperature This straightforward protocol was halide compatible for the synthesis of halogenated indazolones bearing a broad scope of substrates, which suggested a new avenue of great importance to medicinal chem.

RSC Advances published new progress about 1043416-40-5. 1043416-40-5 belongs to alcohols-buliding-blocks, auxiliary class Fluoride,Nitro Compound,Benzene,Alcohol, name is (4-Fluoro-2-nitrophenyl)methanol, and the molecular formula is C7H6FNO3, Quality Control of 1043416-40-5.

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

Barua, Harsh published the artcileAn ab initio molecular dynamics method for cocrystal prediction: validation of the approach, COA of Formula: C11H8O3, the publication is CrystEngComm (2019), 21(47), 7233-7248, database is CAplus.

Cocrystals offer exciting opportunities to the scientists, with options of tuning their physicochem., biopharmaceutical, and mech. properties simultaneously, which can expand the solid form diversity of drugs. Herein, for overcoming the need for exhaustive exptl. work and improving the chances of success in the selection of coformers, a computational prediction approach has been developed. In this study, a new cocrystal prediction methodol. employing hydrogen bonding tendency, evaluated with the aid of mol. dynamics, has been utilized. For validation, the exptl. results of 145 coformers with 6 drugs have been used. The method was found to significantly reproduce the exptl. results with attractive features of being a simple, easy-to-use protocol, with short computational time. Further, the developed model was used to predict the formation of cocrystals of nitrofurantoin against a library of new coformers. Three out of the four new cocrystals formed were correctly predicted by the developed prediction methodol. The cocrystal formation of 89 coformers out of a total of 145 coformers was correctly predicted. Thus, the reasonable degree of success obtained in predicting and exptl. generating new cocrystals of nitrofurantoin indicates that the developed computational methodol. can play an important role in screening a large library of coformers in the future.

CrystEngComm 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, COA of Formula: C11H8O3.

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

Valliant-Saunders, Karine published the artcileOxidation of Tertiary Silanes by Osmium Tetroxide, Product Details of C9H22OSi, the publication is Inorganic Chemistry (2007), 46(13), 5212-5219, database is CAplus and MEDLINE.

In the presence of an excess of pyridine ligand L, osmium tetroxide oxidizes tertiary silanes (Et₃SiH, ⁱPr₃SiH, Ph₃SiH, or PhMe₂SiH) to the corresponding silanols. With L = 4-tert-butylpyridine (^tBupy), OsO₄(^tBupy) oxidizes Et₃SiH and PhMe₂SiH to yield 100 ± 2% of silanol and the structurally characterized osmium(VI) μ-oxo dimer [OsO₂(^tBupy)₂]₂(μ-O)₂ (1a). With L = pyridine (py), only 40-60% yields of R₃SiOH are obtained, apparently because of coprecipitation of osmium(VIII) with [Os(O)₂py₂]₂(μ-O)₂ (1b). Excess silane in these reactions causes further reduction of the Os^VI products, and similar osmium “over-reduction” is observed with PhSiH₃, Bu₃SnH, and boranes. The pathway for OsO₄(L) + R₃SiH involves an intermediate, which forms rapidly at 200 K and decays more slowly to products. NMR and IR spectra indicate that the intermediate is a monomeric Os^VI-hydroxo-siloxo complex, trans-cis-cis-Os(O)₂L₂(OH)(OSiR₃). Mechanistic studies and d. functional theory calculations indicate that the intermediate is formed by the [3 + 2] addition of an Si-H bond across an O:Os:O fragment. This is the first direct observation of a [3 + 2] intermediate in a σ-bond oxidation, though such species have previously been implicated in reactions of H-H and C-H bonds with OsO₄(L) and RuO₄.

Inorganic 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 C4H10O2, Product Details of C9H22OSi.

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

Cirpan, A. published the artcileConducting polymers of decanedioic acid bis-(4-pyrrol-1-yl-phenyl) ester, Quality Control of 23351-09-9, the publication is Materials Chemistry and Physics (2004), 85(1), 222-226, database is CAplus.

A dipyrrolyl monomer was synthesized via the reaction between 4-pyrrol-1-yl phenol and decanedioyl dichloride. The electrochem. behavior of this monomer was studied. Polymerization of decanedioic acid bis-(4-pyrrol-1-yl-phenyl) ester (DAPE) was achieved by chem. and constant current electrolyzes methods. Copolymerization of DAPE with thiophene was performed by constant potential electrolysis in acetonitrile-tetrabutylammonium tetrafluoroborate (TBAFB), dichloromethane-TBAFB, solvent-electrolyte couples. The chem. structures and properties were investigated by Fourier transform IR spectroscopy, NMR spectroscopy, differential scanning calorimetry and thermal gravimetry anal. The conductivities of the samples were measured by a four-probe technique.

Materials Chemistry and Physics 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

Pattanaik, Sandip published the artcileCobalt-Catalyzed Selective Synthesis of Disiloxanes and Hydrodisiloxanes, Recommanded Product: Triethylsilanol, the publication is ACS Catalysis (2019), 9(6), 5552-5561, database is CAplus.

Selective syntheses of sym. siloxanes and cyclotetrasiloxanes are attained from reactions of silanes and dihydrosilanes, resp., with H₂O, and the reactions are catalyzed by a NNN^HtBu Co(II) pincer complex. When phenylsilane was subjected to catalysis with H₂O, a siloxane cage consisting 12 Si and 18 O centers was obtained and remarkably the reaction proceeded with liberation of 3 equiv of H₂ (36 H₂) under mild exptl. conditions. Upon reaction of silane with different silanols, highly selective and controlled syntheses of higher order monohydrosiloxanes and disiloxymonohydrosilanes were achieved by Co catalysis. The liberated H₂ is the only byproduct observed in all of these transformations. Mechanistic studies indicated that the reactions occur via a homogeneous pathway. Kinetic and independent experiments confirmed the catalytic oxidation of silane to silanol, and further dehydrocoupling processes are involved in syntheses of sym. siloxanes, cyclotetrasiloxanes, and siloxane cage compounds, whereas the unsym. monohydrosiloxane syntheses from silanes and silanols proceeded via dehydrogenative coupling reactions. Overall these Co-catalyzed oxidative coupling reactions are based on the Si-H, Si-OH, and O-H bond activation of silane, silanol, and H₂O, resp. Catalytic cycles consisting of Co(II) intermediates probably are operative.

ACS Catalysis 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, Recommanded Product: Triethylsilanol.

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

Pattanaik, Sandip published the artcileCobalt-Catalyzed Selective Synthesis of Disiloxanes and Hydrodisiloxanes, Safety of Triisopropylsilanol, the publication is ACS Catalysis (2019), 9(6), 5552-5561, database is CAplus.

Selective syntheses of sym. siloxanes and cyclotetrasiloxanes are attained from reactions of silanes and dihydrosilanes, resp., with H₂O, and the reactions are catalyzed by a NNN^HtBu Co(II) pincer complex. When phenylsilane was subjected to catalysis with H₂O, a siloxane cage consisting 12 Si and 18 O centers was obtained and remarkably the reaction proceeded with liberation of 3 equiv of H₂ (36 H₂) under mild exptl. conditions. Upon reaction of silane with different silanols, highly selective and controlled syntheses of higher order monohydrosiloxanes and disiloxymonohydrosilanes were achieved by Co catalysis. The liberated H₂ is the only byproduct observed in all of these transformations. Mechanistic studies indicated that the reactions occur via a homogeneous pathway. Kinetic and independent experiments confirmed the catalytic oxidation of silane to silanol, and further dehydrocoupling processes are involved in syntheses of sym. siloxanes, cyclotetrasiloxanes, and siloxane cage compounds, whereas the unsym. monohydrosiloxane syntheses from silanes and silanols proceeded via dehydrogenative coupling reactions. Overall these Co-catalyzed oxidative coupling reactions are based on the Si-H, Si-OH, and O-H bond activation of silane, silanol, and H₂O, resp. Catalytic cycles consisting of Co(II) intermediates probably are operative.

ACS Catalysis 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, Safety of Triisopropylsilanol.

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

Panchale, Wrushali A. published the artcileSimultaneous estimation of salbutamol sulphate and ambroxol HCl from their combined dosage form by UV-VIS spectroscopy using simultaneous equation method, COA of Formula: C13H19Br2ClN2O, the publication is GSC Biological and Pharmaceutical Sciences (2020), 13(3), 127-134, database is CAplus.

A simple UV-Vis Spectrophometric method was developed for the simultaneous determination of salbutamol sulfate and ambroxol HCl (AMB) from their combined dosage form. The method employs formation and solving of simultaneous equation using 242 nm and 272 nm as two anal. wavelengths (λMax of the drugs) of detection. Both the drugs obeyed Beer-Lambert’s law over the concentration range 1-50μg/mL for salbutamol sulfate and 10-50μg/mL for ambroxol HCl, resp. The developed method was validated for Accuracy, Precision, Limit of Detection and Limit of Quantification as per ICH guidelines and results of anal. were validated statistically.

GSC Biological and Pharmaceutical Sciences 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, COA of Formula: C13H19Br2ClN2O.

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

Mutalik, G. S. published the artcileComparative clinical trial of bitoscanate, bephenium hydroxynaphthoate, and tetrachlorethylene in hookworm infection, COA of Formula: C28H29NO4, the publication is Indian Journal of Medical Sciences (1972), 26(11), 718-22, database is CAplus and MEDLINE.

Bitoscanate (I) [4044-65-9] (200-300 mg/day) decreased fecal egg counts by 98% and cured 15 of 23 patients with hookworm whereas bephenium hydroxynaphthoate [3818-50-6] (2.4 g) decreased fecal egg count by 76% and cured 3 of 23 patients and tetrachloroethylene [127-18-4] (3 mL) decreased egg counts by 89% and cured 5 of 23 patients. Mild and transient gastrointestinal reactions were obsd with all 3 drugs but most frequently with bitoscanate.

Indian Journal of Medical Sciences published new progress about 3818-50-6. 3818-50-6 belongs to alcohols-buliding-blocks, auxiliary class Anti-infection,Antiparasitic, name is N-Benzyl-N,N-dimethyl-2-phenoxyethanaminium 3-hydroxy-2-naphthoate, and the molecular formula is C28H29NO4, COA of Formula: C28H29NO4.

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

Cheng, Ming published the artcileSulfo-SADP (sulfosuccinimidyl[4-azidophenyldithio]propionate) an active site directed reagent inhibiting the NADPH dependent O₂^– generation of leukocyte cytochrome b₅₅₈, COA of Formula: C18H20N2O12, the publication is Journal of Biochemistry, Molecular Biology and Biophysics (2002), 6(3), 177-184, database is CAplus and MEDLINE.

Functional reagents known to bring about the formation of a distinct membrane mol. complex of the subunits of cytochrome b₅₅₈ (gp 91^phox and p22^phox) were investigated for their influence on the O₂^– generating capability of liposome incorporated cytochrome b₅₅₈ preparations One, ethyleneglycolbis[sulfo-succinimidylsuccinate], (sulfo-EGS) was found to inhibit O₂^– generation at concentrations which are known to result in crosslinking the two subunits of cytochrome b₅₅₈. Sulfosuccinimidyl [4-azidophenyldithio]propionate, (sulfo-SADP) on the other hand, was found to be a powerful inhibitor of the cytochrome b₅₅₈ dependent O₂^– production at concentrations not able to result in cross linking of the two subunits. Sulfo-SADP inhibits the cytochrome b₅₅₈ O₂^– production 50% at 25 μM, while sulfo-EGS requires 400 μM. For these reagents, the succinimidyl group of sulfo-SADP and sulfo-EGS is the reactive group, which inhibit irreversibly, cytochrome b₅₅₈ generation of O₂^–. Both sulfo-SADP and sulfo-EGS have similar linker arms of 13.9 and 16.1 Å, resp. The difference, accounting for the strong inhibitory profile for sulfo-SADP as compared with sulfo-EGS, resides in the aryl group associated with the sulfo-SADP. The aryl group of sulfo-SADP has been found to be important in directing the specificity of the probe in its inhibition of O₂^– generation. When the disulfide bond linking the aromatic portion of the probe to the succinimidyl ring is cleaved by DTT (dithiothreitol), the product loses its specificity and has an inhibitory activity with respect to O₂^– generation comparable to that of sulfo-EGS. The partial protection against the inhibitory influence of sulfo-SADP by NADP⁺ indicates that the reagent may interact at the pyridine nucleotide-binding domain of cytochrome b₅₅₈. Its low inhibitory titer and its water solubility suggest that sulfo-SADP reacts with a specific amine (the primary reactant for the succinimidyl group) on cytochrome b₅₅₈.

Journal of Biochemistry, Molecular Biology and Biophysics published new progress about 70539-42-3. 70539-42-3 belongs to alcohols-buliding-blocks, auxiliary class pyrrolidine,Ester,Amide,Inhibitor,Inhibitor, name is Bis(2,5-dioxopyrrolidin-1-yl) O,O’-ethane-1,2-diyl disuccinate, and the molecular formula is C18H20N2O12, COA of Formula: C18H20N2O12.

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

Quattrosoldi, Silvia published the artcileBio-based and one-day compostable poly(diethylene 2,5-furanoate) for sustainable flexible food packaging: Effect of ether-oxygen atom insertion on the final properties, Quality Control of 111-29-5, the publication is Chemosphere (2022), 291(Part_2), 132996, database is CAplus and MEDLINE.

In the present work, the effect of ether oxygen atom introduction in a furan ring-containing polymer has been evaluated. Solvent-free polycondensation process permitted the preparation of high mol. weight poly(diethylene 2,5-furandicarboxylate) (PDEF), by reacting the di-Me ester of 2,5-furandicarboxylic acid with diethylene glycol. After mol. and thermal characterization, PDEF mech. response and gas barrier properties to O₂ and CO₂, measured at different temperatures and humidity, were studied and compared with those of poly(butylene 2,5-furandicarboxylate) (PBF) and poly(pentamethylene 2,5-furanoate) (PPeF) previously determined Both PDEF and PPeF films were amorphous, differently from PBF one. As concerns mech. response, PDEF is more flexible than PBF but stiffer than PPeF. Moreover, PDEF is the most thermally stable (temperature of maximum degradation rate being 418 for PDEF, 407 for PBF and 414°C for PPeF) and hydrophilic (water contact angle being 74° for PDEF, 90° for PBF and 93° for PPeF), with gas barrier performances very similar to those of PPeF (O₂ and CO₂ transmission rate being 0.0022 and 0.0018 for PDEF and, 0.0016 and 0.0014 cm³ cm/m² d atm for PPeF). Lab scale composting experiments indicated that PDEF and PPeF were compostable, the former degrading faster, in just one day. The results obtained are explained on the basis of the high electronegativity of ether oxygen atom with respect to the carbon one, and the consequent increase of dipoles along the macromol.

Chemosphere published new progress about 111-29-5. 111-29-5 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ploymers, name is Pentane-1,5-diol, and the molecular formula is C5H12O2, Quality Control of 111-29-5.

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