Author: tianli

Tamoradi, Taiebeh; Ghadermazi, Mohammad; Ghorbani-Choghamarani, Arash; Molaei, Somayeh published the artcile< Synthesis and characterization of oxo-vanadium complex anchored onto SBA-15 as a green, novel and reusable nanocatalyst for the oxidation of sulfides and oxidative coupling of thiols>, Quality Control of 699-12-7, the main research area is SBA15 vanadium complex oxidation oxidative coupling catalyst.

The present work describes the synthesis of a new oxo-vanadium complex immobilized on SBA-15 nanostructure as an efficient catalyst for oxidation of sulfides and oxidative coupling of thiols. Characterization of the resultant AMPD@SBA-15 nanostructure was performed by various physico-chem. techniques such as Fourier transform IR spectroscopy, transmission and scanning electron microscopies, energy-dispersive X-ray spectroscopy, inductively coupled plasma optical emission spectroscopy, X-ray diffraction, thermal gravimetric anal., and N2 adsorption and desorption. The results of the developed procedure bring several benefits such as the use of com. available, ecol. benign, operational simplicity, and cheap and chem. inert reagents. It shows good reaction times, practicability and high efficiency, and is easily recovered from the reaction mixture by simple filtration and reused for several consecutive cycles without noticeable change in its catalytic activity. More importantly, high efficiency, simple and an inexpensive procedure, com. available materials, easy separation, and an eco-friendly procedure are the several advantages of the currently employed heterogeneous catalytic system. Graphical Abstract: [Figure not available: see fulltext.].

Research on Chemical Intermediates published new progress about Oxidation catalysts. 699-12-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H10OS, Quality Control of 699-12-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Mirfakhraei, Saeideh; Hekmati, Malak; Eshbala, Fereshteh Hosseini; Veisi, Hojat published the artcile< Fe3O4/PEG-SO3H as a heterogeneous and magnetically-recyclable nanocatalyst for the oxidation of sulfides to sulfones or sulfoxides>, Electric Literature of 699-12-7, the main research area is sulfide oxidation; sulfoxide preparation; sulfone preparation; magnetite sulfonated oxidation nanocatalyst.

A sulfonated-polyethylene glycol-coated Fe3O4 nanocomposite (Fe3O4/PEG-SO3H) as a greatly effective and ecol. nanocatalyst for the selective oxidation of sulfides to sulfoxides or sulfones with high yields under solvent-free conditions by employing 30% hydrogen peroxide as the oxidant, is presented. A number of sulfides containing alc., ester, and aldehyde functional groups were effectively and selectively oxidized without altering the desired characteristics. The magnetic nanocatalyst (Fe3O4/PEG-SO3H) can be conveniently and swiftly retrieved through the utilization of an external magnetic tool and recycled for more than 10 reaction runs without significantly decreasing its catalytic behavior.

New Journal of Chemistry published new progress about Nanocatalysts. 699-12-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H10OS, Electric Literature of 699-12-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Radicioni, Milko; Caverzasio, Carol; Rovati, Stefano; Giori, Andrea Maria; Cupone, Irma; Marra, Fabio; Mautone, Giuseppe published the artcile< Comparative Bioavailability Study of a New Vitamin D3 Orodispersible Film Versus a Marketed Oral Solution in Healthy Volunteers>, HPLC of Formula: 434-16-2, the main research area is vitamin D3 bioavailability orodispersible orally disintegrating film immune system.

An orally disintegrating film (ODF) formulation of vitamin D3 that dissolves rapidly in the mouth without drinking or chewing may be a worthwhile alternative to currently available drug products for therapeutic vitamin D supplementation. This study aimed to compare the bioavailability of a single dose of a vitamin D3 25000 I. U. ODF with those of a marketed oral vitamin D3 preparation in healthy subjects. This Phase 1, randomised, parallel-group, open-label study compared the pharmacokinetics of calcifediol [25(OH)D3], the precursor of bioactive vitamin D3, after a single dose of a new vitamin D3 25,000 I. U. ODF with those of a Reference formulation (vitamin D3 25000 I.U./2.5 mL oral solution) in healthy adult subjects using a validated liquid chromatog.-tandem mass spectrometry (LC-MS/MS) assay. The primary objective was bioavailability under fed conditions, defined as maximum plasma concentration (Cmax) of 25(OH)D3 and area under the concentration-time curve from time zero to time t, the last quantifiable concentration (AUC0-t). The pharmacokinetics of 25(OH)D3 were also evaluated following the ODF administration under fasting conditions. Subjects were randomised to receive a single dose of the vitamin D3 25000 I. U. ODF or the Reference oral solution under fed conditions or the vitamin D3 ODF under fasting conditions. Forty-eight healthy subjects were randomised and completed the study. Overall, the pharmacokinetic profile was very similar across the three treatment groups, and bioavailability did not significantly differ among treatments. Under fed conditions, mean 25(OH)D3 plasma values for Cmax were 6.68 ± 2.03 vs. 6.61 ± 2.62 ng/mL for the Test vs. Reference formulations. Corresponding values for AUC0-t were 2364.80 ± 1336.97 vs. 2150.52 ± 1622.76 ng/mL x h. Mean Cmax was slightly lower (6.68 ± 2.03 vs 7.23 ± 1.48 ng/mL) and the time to reach peak concentration was delayed (144 h 36-312 vs. 42 h 2-480) with the ODF under fed vs. fasting conditions (p = 0.0371). The point estimates and 90% CIs of the Testfed/Referencefed ratios of the geometric means showed that the bioavailability of exogenous 25(OH)D3 was, both in rate and extent of absorption, slightly higher with the vitamin D3 ODF than the vitamin D3 oral solution under the administration conditions recommended for the vitamin D3 oral solution Palatability and ease of use of the ODF were satisfactory. Conclusion: The new ODF 25000 I. U. formulation provided a valuable alternative to the marketed oral solution for therapeutic vitamin D supplementation, with a bioavailability that was slightly higher than that of the vitamin D3 oral solution administered under the same conditions.

Clinical Drug Investigation published new progress about Bioavailability. 434-16-2 belongs to class alcohols-buliding-blocks, and the molecular formula is C27H44O, HPLC of Formula: 434-16-2.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Hashimoto, Toru; Ishimaru, Toshiya; Shiota, Keisuke; Yamaguchi, Yoshitaka published the artcile< Bottleable NiCl2(dppe) as a catalyst for the Markovnikov-selective hydroboration of styrenes with bis(pinacolato)diboron>, Reference of 403-41-8, the main research area is nickel dppe complex catalyst Markovnikov hydroboration styrene bispinacolatodiboron.

Although transition-metal-catalyzed hydroboration reactions of alkenes have been extensively studied, only three examples using Ni complexes have been reported so far. In this study, we have examined hydroboration reactions of alkenes using Ni/phosphine complexes. The com. available and bottleable complex NiCl2(dppe) (dppe = 1,2-bis(diphenylphosphino)ethane) serves as a catalyst for the highly Markovnikov-selective hydroboration of styrene derivatives that affords the desired Markovnikov products in high yield.

Chemical Communications (Cambridge, United Kingdom) published new progress about Hydroboration catalysts. 403-41-8 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H9FO, Reference of 403-41-8.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Mizushima, Taiga; Oka, Marina; Imada, Yasushi; Iida, Hiroki published the artcile< Low-Voltage-Driven Electrochemical Aerobic Oxygenation with Flavin Catalysis: Chemoselective Synthesis of Sulfoxides from Sulfides>, Name: 2-(Phenylthio)ethanol, the main research area is sulfoxide preparation chemoselective green chem electrochem; sulfide electrochem aerobic oxygenation flavin catalyst.

The chemoselective electrochem. oxygenation of sulfides RSR1 (R = Ph, Bu, pyridin-2-yl, etc.; R1 = Me, cyclopropyl, prop-2-en-1-yl, etc.) and dithiane to sulfoxides RS(O)R1 and 1,3-dithiane 1-oxide was performed using a biomimetic flavin catalyst that enables the activation of mol. oxygen under a low cathode potential. Diverse functional groups, including alcs., ketones, aldehydes, cyclopropane, carboxylic acids, pyridine, alkenes, and alkynes, are well tolerated under low-voltage electrolytic conditions.

Advanced Synthesis & Catalysis published new progress about Chemoselectivity. 699-12-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H10OS, Name: 2-(Phenylthio)ethanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Takojima, Kaoru; Saito, Tatsuya; Vevert, Cedric; Ladelta, Viko; Bilalis, Panayiotis; Watanabe, Jun; Hatanaka, Shintaro; Konno, Takashi; Yamamoto, Takuya; Tajima, Kenji; Hadjichristidis, Nikos; Isono, Takuya; Satoh, Toshifumi published the artcile< Facile synthesis of poly(trimethylene carbonate) by alkali metal carboxylate-catalyzed ring-opening polymerization>, Product Details of C9H8O, the main research area is trimethylene carbonate ROP alkali metal acetate catalyst green chem.

Abstract: Alkali metal carboxylates, including sodium acetate, sodium benzoate, and sodium sorbate, which are all readily available and widely used as food additives, were found to promote the ring-opening polymerization (ROP) of trimethylene carbonate (TMC) to produce poly(trimethylene carbonate) (PTMC). The sodium acetate-catalyzed ROP of TMC proceeded in the presence of an alc. initiator under solvent-free conditions at 70 °C, even at very low catalyst loadings of 0.01-0.0001 mol%. The controlled nature of this ROP system enabled the synthesis of PTMCs with predicted mol. weights ranging from 2400 to 11 700 g mol-1 and narrow dispersities (∼1.23). Importantly, ROP is initiated by an alc. initiator, allowing PTMC production with desired functional groups, such as azido, alkyne, and methacrylate groups, at the α-chain end. Furthermore, the poly(L-lactic acid)-b-PTMC-b-poly(L-lactic acid) triblock copolymer, a biodegradable thermoplastic elastomer, was successfully synthesized in one pot via the sodium acetate-catalyzed ring-opening block copolymerization of TMC and L-lactide with a 1,3-propanediol initiator.

Polymer Journal (Tokyo, Japan) published new progress about Biodegradable materials. 10602-04-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C9H8O, Product Details of C9H8O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zhong, Yuanhai; Zhou, Taigang; Zhang, Zhuohua; Chang, Ruiqing published the artcile< Copper-Catalyzed Transfer Hydrogenation of N-Heteroaromatics with an Oxazaborolidine Complex>, Category: alcohols-buliding-blocks, the main research area is quinoline hydrogenation oxaborolidine borane complex copper catalyst; tetrahydroquinoline preparation transfer hydrogenation quinoline oxaborolidine borane complex.

Quinolines, quinoxalines, acridine and 1,10-phenanthroline were hydrogenated at the heterocyclic ring by borane-oxaborolidine complex, prepared in situ from ethanolamine and BH3·THF, giving tetrahydro-derivatives; the reaction is catalyzed by copper(II) and copper(I) salts. The first time use of the oxazaborolidine complex in transfer hydrogenation, was accomplished. A general and efficient method for copper-catalyzed transfer hydrogenation of a variety N-heteroaromatics with oxazaborolidine-BH3 complex under mild reaction conditions afforded the corresponding hydrogenated products in up to 96% yields. Mechanistic studies indicate that the hydrogen source originated from water and borane that coordinate with the nitrogen atom of oxazaborolidine. Accordingly, a plausible mechanism for this reaction was proposed. This method was successfully used in the key step synthesis of natural products (±)-Angustureine and (±)-Galipinine in three steps.

ACS Omega published new progress about Amino alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 5344-90-1 belongs to class alcohols-buliding-blocks, and the molecular formula is C7H9NO, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Ling, Xiujun; Wilcox, Craig S. published the artcile< A Molecular Torsion Balance Study: A Nearby Anionic Group Exerts Little Influence on Hydrophobic Interactions between Nonpolar Surfaces>, Reference of 3685-27-6, the main research area is mol torsion balance folding free energy; hydrophobic interaction; lipophilicity; non-covalent interactions; polarity; protein folding.

Polar groups have a solvent ordering effect on water and therefore may affect hydrophobic binding energies for nearby lipophilic surfaces. This would mean that determinations of excess surface free energy association energies require consideration of nearby polar functional groups. This paper reports results of a study to measure this possible effect. It was concluded from the models used here that an anionic polar group nearby a hydrophobic surface has little or no effect on the magnitude of hydrophobic association

Chemistry – A European Journal published new progress about Biaryls Role: PRP (Properties), RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 3685-27-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C7H14O2, Reference of 3685-27-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts