Category: alcohols-buliding-blocks

Coutinho, Rodrigo published the artcileOptimisation of the conditions of dispersive liquid-liquid microextraction for environmentally friendly determination of bisphenols and benzophenone in complex water matrices by LC-MS/MS, HPLC of Formula: 80-09-1, the publication is Microchemical Journal (2022), 107636, database is CAplus.

Due to well-known risks to human and environmental health, the increasing presence of several micropollutants even in very low concentrations in environmental matrixes requires sustainable and advanced anal. methods to expand monitoring programs, particularly for water quality control. The objective of this study was to optimize the conditions of the dispersive liquid-liquid microextraction (DLLME) for a combined group of emerging micropollutants (bisphenol A, bisphenol S, bisphenol F, bisphenol AF and benzophenone) in complex water matrixes. Ten variables were chosen as the most important for DLLME procedure and the Design of Experiments (DoE) approach was applied to find the most relevant variables and optimize the DLLME procedure. The optimized DLLME was then, applied to real complex water samples including raw and treated wastewaters and surface water in Rio de Janeiro city, Brazil, and the extracted samples were analyzed by ultra-performance liquid chromatog.-tandem mass spectrometry (UPLC-MS/MS). The variables vortex mixing time (VMT), Dispersive Solvent Volume (DSV) and Extractor Solvent Volume (ESV) are the most important among the variables evaluated. The recovery efficiencies ranged from 60 to 120% after optimization the amounts of target compounds found in the five real aqueous matrixes varied from 0.005 to 150μg L-1. The association of optimized DLLME with the UPLC-MS/MS met the validation requirements adopted and generated anal. results of high quality. The advantages of this extraction technique include reduction of cost per anal.; low volume of samples and low volume of solvent required; no need to use cartridges; reduction of waste generation. The method is, therefore, suitable to process large numbers of samples, particularly in countries with limited budgets for environmental monitoring.

Microchemical Journal published new progress about 80-09-1. 80-09-1 belongs to alcohols-buliding-blocks, auxiliary class Ploymers, name is 4,4′-Sulfonyldiphenol, and the molecular formula is C12H10O4S, HPLC of Formula: 80-09-1.

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

Cavaca, Lidia A. S. published the artcilePreparation of Thioaminals in Water, Product Details of C8H10S, the publication is Molecules (2022), 27(5), 1673, database is CAplus and MEDLINE.

In this work, the formation of thioaminals RSCH(R¹)N(R²)(R³) [R = Ph, benzyl, Pr, etc.; R¹ = furan-2-yl, Ph, 4-bromophenyl, etc. ; R² = benzyl; R³ = benzyl ; R²R³ = -(CH₂)₅-, -(CH₂)₂O(CH₂)₂-, -(CH₂)₂N(CH₃)(CH₂)₂-] in water promoted by copper(II) triflate was described.

Molecules published new progress about 4410-99-5. 4410-99-5 belongs to alcohols-buliding-blocks, auxiliary class Thiol,Benzene, name is 2-Phenylethanethiol, and the molecular formula is C8H10S, Product Details of C8H10S.

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

Garcia-Abuin, Alicia published the artcileCarbon dioxide capture with tertiary amines. Absorption rate and reaction mechanism, Category: alcohols-buliding-blocks, the publication is Journal of the Taiwan Institute of Chemical Engineers (2017), 356-362, database is CAplus.

Present work analyzes the overall carbon dioxide chem. absorption process using tertiary amines in aqueous solution, taking into account absorption rate exptl. data and ¹³C and ¹H NMR. These studies try to detect the causes because different behaviors are obtained for absorption curves at different carbon dioxide loadings. The combined use of these techniques allows to evaluate the weight of different variables (chem. kinetics, mechanism, hydrodynamics, etc) upon the absorption overall process.

Journal of the Taiwan Institute of Chemical Engineers published new progress about 122-20-3. 122-20-3 belongs to alcohols-buliding-blocks, auxiliary class Organic Pigment, name is Triisopropanolamine, and the molecular formula is C9H21NO3, Category: alcohols-buliding-blocks.

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

Pinto, Eduardo Costa published the artcileDevelopment and validation of a stability-indicating HPLC method for topiramate using a mixed-mode column and charged aerosol detector, Computed Properties of 20880-92-6, the publication is Journal of Separation Science (2018), 41(8), 1716-1725, database is CAplus and MEDLINE.

The anal. of topiramate in the presence of its main degradation products is challenging due to the absence of chromophore moieties and their wide range of polarity. Mixed-mode chromatog. has been used in such cases because it combines two or more modes of separation Charged aerosol detector is also an alternative since its detection is independent of optical properties and analyte ionization. This study is aimed to develop and validate two new stability-indicating methods by high-performance liquid chromatog. for the main degradation products of topiramate using mixed-mode chromatog. and a charged aerosol detector. Method 1 employed an Acclaim Trinity P1 column (3.0 mm × 150 mm, 2.7 μm) with a mobile phase comprising of 80% ammonium acetate buffer (20 mM, pH 4.0) and 20% methanol at a flow rate of 0.5 mL/min at 35°C. Method 2 utilized a C18 Acclaim 120 column (4.6 mm × 250 mm; 5 μm) with ACN/water (50:50) at a flow rate of 0.6 mL/min at 50°C. Validation of the two methods demonstrated excellent performance with respect to linearity, precision, accuracy, and selectivity. The limits of detection for topiramate, fructose, sulfate, sulfamate, and compound A were 2.97, 12.08, 4.02, 13.91, and 3.94 μg/mL, resp.

Journal of Separation Science published new progress about 20880-92-6. 20880-92-6 belongs to alcohols-buliding-blocks, auxiliary class Other Aliphatic Heterocyclic,Chiral,Alcohol, name is ((3aS,5aR,8aR,8bS)-2,2,7,7-Tetramethyltetrahydro-3aH-bis([1,3]dioxolo)[4,5-b:4′,5′-d]pyran-3a-yl)methanol, and the molecular formula is C12H20O6, Computed Properties of 20880-92-6.

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

Arzumanyan, Ashot V. published the artcileCopper-Catalyzed Oxidation of Hydrosilanes: A New Method for the Synthesis of Alkyl- and Siloxysilanols, Formula: C6H16OSi, the publication is Synlett (2018), 29(4), 489-492, database is CAplus.

A simple method for the preparation of silanols from the corresponding hydrosilanes is reported. The method employs a com. available oxidizing system based on CuCO ₃/ t-BuOOH _(aq)under relatively mild conditions (80 °C, atm. pressure) with acetonitrile as the solvent. Furthermore, we present a method that permits the Si-H group to be oxidized to a Si-OH group not only in triethylsilane, but also in bis(trimethylsiloxy)methylsilane, a siloxy derivative of hydrosilane. The products were isolated in gram amounts in yields of 61-73%.

Synlett 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, Formula: C6H16OSi.

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

Arzumanyan, Ashot V. published the artcileAerobic Co or Cu/NHPI-catalyzed oxidation of hydride siloxanes: synthesis of siloxanols, HPLC of Formula: 597-52-4, the publication is Green Chemistry (2018), 20(7), 1467-1471, database is CAplus.

A highly efficient preparative method for the synthesis of siloxanols based on aerobic Co(OAc)₂ or Cu(OAc)₂/NHPI-catalyzed oxidation of hydrosilanes and hydrosiloxanes using “green”, com. available, simple inexpensive reagents and mild reaction conditions has been proposed. This is a general reaction for the synthesis of mono-, oligo- and polymeric siloxanols with various structures (linear, branched and cyclic).

Green Chemistry 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, HPLC of Formula: 597-52-4.

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

Liu, Jiandong published the artcileNickel-catalyzed, regio- and enantioselective benzylic alkenylation of olefins with alkenyl bromide, SDS of cas: 20880-92-6, the publication is Angewandte Chemie, International Edition (2021), 60(8), 4060-4064, database is CAplus and MEDLINE.

A NiH-catalyzed migratory hydroalkenylation reaction of olefins with alkenyl bromides has been developed, affording benzylic alkenylation products with high yields and excellent chemoselectivity. The mild conditions of the reaction preclude olefinic products from undergoing further isomerization or subsequent alkenylation. Catalytic enantioselective hydroalkenylation of styrenes was achieved by using a chiral bisoxazoline ligand.

Angewandte Chemie, International Edition published new progress about 20880-92-6. 20880-92-6 belongs to alcohols-buliding-blocks, auxiliary class Other Aliphatic Heterocyclic,Chiral,Alcohol, name is ((3aS,5aR,8aR,8bS)-2,2,7,7-Tetramethyltetrahydro-3aH-bis([1,3]dioxolo)[4,5-b:4′,5′-d]pyran-3a-yl)methanol, and the molecular formula is C12H20O6, SDS of cas: 20880-92-6.

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

Bao, Zhi-hui published the artcileClinical analysis of carboprost tromethamine and misoprostol in the prevention of postpartum hemorrhage of high-risk pregnant women after cesarean section, Related Products of alcohols-buliding-blocks, the publication is Shiyong Yaowu Yu Linchuang (2014), 17(2), 243-245, database is CAplus.

Objective: To compare the value of carboprost tromethamine and misoprostol in the prevention and treatment of postpartum hemorrhage in high-risk pregnant women after cesarean section. Methods: 102 cases of high-risk pregnant women were randomly divided into 2 groups, 52 cases in group A were treated with carboprost tromethamine, while 52 cases in group B were treated with misoprostol. The postpartum hemorrhage rate and the amount of bleeding were compared between the two groups. Results: There was no significant difference in the postpartum hemorrhage rate between the 2 groups (P > 0.05). The amount of bleeding at postpartum 2 h and 24 h in group A were less than those of group B (P < 0.05). No significant difference was found in the incidence of adverse reactions between the 2 groups (P > 0.05). Conclusion: Carboprost tromethamine can prevent postpartum hemorrhage, and the effect is superior to that of misoprostol, it can improve the rate of contraction of the uterus, and reduce the rate of postpartum hemorrhage.

Shiyong Yaowu Yu Linchuang published new progress about 58551-69-2. 58551-69-2 belongs to alcohols-buliding-blocks, auxiliary class Chiral,Alkenyl,Amine,Aliphatic cyclic hydrocarbon,Ester,Alcohol,Inhibitor,, name is 2-Amino-2-(hydroxymethyl)propane-1,3-diol (Z)-7-((1R,2R,3R,5S)-3,5-dihydroxy-2-((S,E)-3-hydroxy-3-methyloct-1-en-1-yl)cyclopentyl)hept-5-enoic acid, and the molecular formula is C25H47NO8, Related Products of alcohols-buliding-blocks.

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

Wang, Peng published the artcileSolvent-free, B(C₆F₅)₃-Catalyzed S-H Insertion of Thiophenols and Thiols with α-Diazoesters, Quality Control of 4410-99-5, the publication is Chemistry – An Asian Journal (2022), 17(16), e202200465, database is CAplus and MEDLINE.

A B(C₆F₅)₃-catalyzed S-H insertion reaction of thiophenols and thiols with α-diazoesters to access valuable α-thioesters was described. With the established protocol, an array of α-thioester products were generated in moderate to good yields with broad scope and functional group tolerance. In addition, this reaction maintained its high efficiency on gram scale and the product can be easily transformed into other useful motifs. This reaction proceeded under solvent-free conditions at room temperature, and generally finished in twenty minutes upon magnet stirring, which offers an expedient way for synthesis of thioether-containing compounds

Chemistry – An Asian Journal published new progress about 4410-99-5. 4410-99-5 belongs to alcohols-buliding-blocks, auxiliary class Thiol,Benzene, name is 2-Phenylethanethiol, and the molecular formula is C8H11NO, Quality Control of 4410-99-5.

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

Sharma, Hemant K. published the artcileSiloxymethylamines as aminomethylation reagents for amines leading to labile diaminomethanes that can be trapped as their [Mo(CO)₄] complexes, Computed Properties of 597-52-4, the publication is Chemistry – A European Journal (2016), 22(22), 7363-7366, database is CAplus and MEDLINE.

Compound Et₃SiOCH₂NMe₂ transfers the aminomethyl group, Me₂NCH₂ to R₂NH (R₂ = Et₂, PhMe, [Cr(η⁶-C₆H₅)(CO)₃]Me, PhH) giving previously unknown diaminomethanes, Me₂NCH₂NR₂ and, in the case of R₂ = PhH, the triamine Me₂NCH₂N(Ph)CH₂NMe₂. The diaminomethanes exhibit an unreported disproportionation to a mixture of (R₂N)₂CH₂, (Me₂N)₂CH₂, and Me₂NCH₂NR₂, which can be trapped as their [Mo(CO)₄(diamine)] complexes. Whereas PhMeNCH₂NMe₂ is a labile compound, the metal-substituted [(η⁶-C₆H₅)Cr(CO)₃]MeNCH₂NMe₂ is a stable material. The triamine Me₂NCH₂N(Ph)CH₂NMe₂ is unstable with respect to transformation to 1,3,5-triphenyltriazine, but is readily trapped as the bidentate-triamine Mo(CO)₄ complex. All metal complexes were characterized by single-crystal x-ray diffraction.

Chemistry – A European Journal 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 C4H6O3, Computed Properties of 597-52-4.

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