Tag: 100-200

Quaternary Ammonium Salts-Based Deep Eutectic Solvents: Utilization in Extractive Desulfurization was written by Khan, Naushad;Srivastava, Vimal Chandra. And the article was included in Energy & Fuels in 2021.Formula: C4H12ClN The following contents are mentioned in the article:

In this work, three deep eutectic solvents (DESs) were synthesized and further used in extractive desulfurization (EDS). Three DESs were synthesized by the thermal method using choline chloride (ChCl), tetrabutylammonium bromide (TBAB), and tetramethylammonium chloride (TMAC) as hydrogen bond acceptors (HBAs) and ethylene glycol (EG) as a hydrogen bond donor (HBD). The thermal properties of DESs and their individual components were determined via differential scanning calorimetry (DSC) and thermogravimetric anal. (TGA) coupled with Fourier transform IR spectroscopy (TGA-FTIR). The DESs were further utilized in the extraction of sulfur-based model oil (500 mg·L^-1 sulfur content as a dibenzothiophene (DBT) dissolved in isooctane). The maximum sulfur extraction efficiency of 81.2% was achieved using TBAB/2EG as DES at optimized operating conditions, i.e., contact time of 30 min, temperature at 25°C, the volumetric ratio of DES to fuel being 1.2:1, and stirring speed of 350 rpm. The recyclability of DES without regeneration caused a decrease in extraction efficiency, which was regained after regeneration. The pseudo first-, second-, and n^th-order models represented the EDS kinetics. The interaction between the components during the synthesis and after regeneration was confirmed by FTIR and ¹H NMR. Gas chromatog. with flame ionization detection (GC-FID) anal. showed negligible loss (1.5%-2.5%) of DES during regeneration. This study involved multiple reactions and reactants, such as Tetramethylammonium chloride (cas: 75-57-0Formula: C4H12ClN).

Tetramethylammonium chloride (cas: 75-57-0) belongs to organic chlorides. Chlorinated organic compounds are found in nearly every class of biomolecules and natural products including alkaloids, terpenes, amino acids, flavonoids, steroids, and fatty acids. The haloform reaction, using chlorine and sodium hydroxide, is also able to generate alkyl halides from methyl ketones, and related compounds. Chloroform was formerly produced thus.Formula: C4H12ClN

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Targeting Alzheimer’s disease: Novel indanone hybrids bearing a pharmacophoric fragment of AP2238 was written by Rizzo, Stefano;Bartolini, Manuela;Ceccarini, Luisa;Piazzi, Lorna;Gobbi, Silvia;Cavalli, Andrea;Recanatini, Maurizio;Andrisano, Vincenza;Rampa, Angela. And the article was included in Bioorganic & Medicinal Chemistry in 2010.Formula: C6H12BrCl The following contents are mentioned in the article:

We report on a series of hybrid compounds structurally derived from donepezil and AP2238. This study was aimed at improving the activities of the reference compounds, donepezil and AP2238, and at broadening the range of activities of new derivatives as, due to the multifactorial nature of AD, mols. that modulate the activity of a single protein target are unable to significantly modify the progression of the disease. In particular, the indanone core from donepezil was linked to the phenyl-N-methylbenzylamino moiety from AP2238, through a double bond that was kept to evaluate the role of a lower flexibility in the biol. activities. Moreover, SAR studies were performed to evaluate the role of different substituents in position 5 or 6 of the indanone ring in the interaction with the PAS, introducing also alkyl chains of different lengths carrying different amines at one end. Derivatives 21 and 22 proved to be the most active within the series and their potencies against AChE were in the same order of magnitude of the reference compounds Compounds 15, 21-22, with a 5-carbon alkyl chain bearing an amino moiety at one end, better contacting the PAS, remarkably improved the inhibition of AChE-induced Aβ aggregation with respect to the reference compounds They also showed activity against self-aggregation of Aβ₄₂ peptide, the most amyloidogenic form of amyloid produced in AD brains, while the reference compounds resulted completely ineffective. This study involved multiple reactions and reactants, such as 1-Bromo-6-chlorohexane (cas: 6294-17-3Formula: C6H12BrCl).

1-Bromo-6-chlorohexane (cas: 6294-17-3) belongs to organic chlorides. An organic chloride is an organic compound containing at least one covalently bonded atom of chlorine. Their wide structural variety and divergent chemical properties lead to a broad range of names and applications. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. However, the extent of chlorination is difficult to control.Formula: C6H12BrCl

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Insights into the Play of Novel Bronsted Acid-Based Deep Eutectic Solvents for the Conversion of Glucose into 5-Hydroxymethylfurfural without Additional Catalysts was written by Tao, Shunhui;Hu, Lei;Zhang, Xiaodong;Mai, Yinglin;Xian, Xiaoling;Zheng, Xiaojie;Lin, Xiaoqing. And the article was included in Industrial & Engineering Chemistry Research in 2022.Reference of 75-57-0 The following contents are mentioned in the article:

5-Hydroxymethylfurfural (5-HMF) is a versatile bio-platform chem. that connects biomass to a variety of different fuels, chems., and materials. In this work, novel Bronsted acid-based deep eutectic solvents (DESs) with both solvent and catalytic functionalities for glucose dehydration into 5-HMF were developed without the need of addnl. metal salt catalysts or heterogeneous catalysts. The types of hydrogen bond donor (HBD) and hydrogen bond acceptor (HBA), the ratio of HBD to HBA of the DES, heating time, reaction temperature, initial glucose concentration, and moisture content of the DES were systematically investigated to reveal the interplay of the DES in the conversion of glucose to 5-HMF. The most effective DES was found to be tri-Et benzyl ammonium chloride (TEBAC)/formic acid (FA) (molar ratio: 2:1) with a 5-HMF yield of 30.5 ± 1.0% in glucose dehydration and approx. 100% glucose conversion (initial glucose concentration: 2.5 weight %) in 60 min at 150°C. Most importantly, after five cycles, the TEBAC/FA (1:2) DES retained high stability and catalytic activity, with the yield of 5-HMF remaining 30.1 ± 0.5%. Interestingly, as the water content of the DES increased to 70%, the 5-HMF yield increased to 36.5 ± 1.0% along with an 8.01 ± 1.4% yield of levulinic acid. The finding of this study provided insights into the TEBAC/FA (1:2) DES with dual capabilities that might support more efficient bio-based commodity chem. production methods. This study involved multiple reactions and reactants, such as Tetramethylammonium chloride (cas: 75-57-0Reference of 75-57-0).

Tetramethylammonium chloride (cas: 75-57-0) belongs to organic chlorides. Organic chlorides are compounds containing a carbon-chlorine bond, which are widely used in the oil field as a wax dissolver. Alkyl chlorides are versatile building blocks in organic chemistry. While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available.Reference of 75-57-0

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Novel pyranopyrazole derivatives comprising a benzoxazole core as antimicrobial inhibitors: design, synthesis, microbial resistance and machine aided results was written by Reddy, Guda Mallikarjuna;Kumari, Avula Krishna;Reddy, Vemulapati Hanuman;Garcia, Jarem Raul. And the article was included in Bioorganic Chemistry in 2020.Reference of 638-07-3 The following contents are mentioned in the article:

The synthesis of pyranopyrazoles I (R = Ph, 2-MeC₆H₄, 4-O₂NC₆H₄, etc.) comprising benzoxazole moiety by green approach strategy is reported and their antimicrobial performance on four bacteria and two fungi was studied. Most of the compounds delivered reliable toxicity to kill the pathogens. Among these compounds, the compound I (R = 2-MeC₆H₄) exhibited considerable activity against the microbial pathogens. Moreover, compounds I (R = Ph, 2-MeOC₆H₄, 4-HOC₆H₄) showed prominent antibacterial activity. In addition, mol. docking studies of docked compounds revealed the strong bonding interaction with DNA-gyrase and were docked into the intercalation location of DNA of the DNA-gyrase complex. The mol. bounded to the DNA was stabilized by the H bonds, hydrophobic interactions and π-π interaction. In addition, the linked 5-chlorobenzoxazole structure was stabilized by the DT-8 and DG2009 of the F chain with pi-pi interactions. From the computer-aided results, it was observed that compound I (R = 2-MeC₆H₄) demonstrated maximum docking score -10.0 kcal/mol towards DNA-gyrase. Overall, this investigation suggests that these biol. active compounds can be utilized as led for preclin. studies with the goal of developing newer antimicrobial drugs. This study involved multiple reactions and reactants, such as Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3Reference of 638-07-3).

Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3) belongs to organic chlorides. Chlorinated organic compounds are found in nearly every class of biomolecules and natural products including alkaloids, terpenes, amino acids, flavonoids, steroids, and fatty acids. Organochlorine compounds are lipophylic, meaning they are more soluble in fat than in water. This gives them a high tenancy to accumulate in the food chain (biomagnification).Reference of 638-07-3

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Multi-faceted Set-up of a Diverse Ketoreductase Library Enables the Synthesis of Pharmaceutically-relevant Secondary Alcohols was written by Voss, Moritz;Kueng, Robin;Hayashi, Takahiro;Jonczyk, Magdalena;Niklaus, Michael;Iding, Hans;Wetzl, Dennis;Buller, Rebecca. And the article was included in ChemCatChem in 2021.Product Details of 638-07-3 The following contents are mentioned in the article:

Enzymes are valuable tools to introduce chirality into small mols. Especially, ketoreductase (KRED)-catalyzed transformations of ketones to yield chiral secondary alcs. have become an established biocatalytic process step in the pharmaceutical and fine chem. industry. Development time, however, remains a critical factor in chem. process development and thus, the competitiveness of a biocatalytic reaction step is often governed by the availability of off-the-shelf enzyme libraries. To expand the biocatalytic toolbox with addnl. ketoreductases, we established a multi-faceted screening procedure to capture KRED diversity from different sources, such as literature, available genome data, and uncharacterized microbial strains. Overall, we built a library consisting of 51 KRED enzymes, 29 of which have never been described in literature before. Notably, 18 of the newly described enzymes exhibited anti-Prelog preference complementing the majority of ketoreductases which generally follow Prelog’s rule. Anal. of the library’s catalytic activity toward a chem. diverse ketone substrate set of pharmaceutical interest further highlighted the broad substrate scope and the complementing enantio-preference of the individual KREDs. Using the generated sequence-function data of the included short chain dehydrogenases in a bioinformatic anal. led to the identification of possible sequence determinants of the stereospecificity exhibited by these enzymes. This study involved multiple reactions and reactants, such as Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3Product Details of 638-07-3).

Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3) belongs to organic chlorides. Organic chlorides can be used in production of: PVC, pesticides, chloromethane, teflon, insulators. Aryl chlorides may be prepared by the Friedel-Crafts halogenation, using chlorine and a Lewis acid catalyst.Product Details of 638-07-3

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Nanofluid of magnetic-activated charcoal and hydrophobic deep eutectic solvent: Application in dispersive magnetic solid-phase extraction for the determination and preconcentration of warfarin in biological samples by high-performance liquid chromatography was written by Nooraee Nia, Negar;Hadjmohammadi, Mohammad Reza. And the article was included in Biomedical Chromatography in 2021.COA of Formula: C4H12ClN The following contents are mentioned in the article:

In this study, for the first time, nanofluid of magnetic-activated charcoal and hydrophobic deep eutectic solvent (AC@Fe₃O₄-DES) based dispersive magnetic solid-phase extraction was successfully applied for the determination and preconcentration of warfarin in plasma and urine samples. The hydrophobic DES was prepared by mixing tetramethylammonium chloride (as hydrogen bond acceptor) and thymol (as hydrogen bond donor) and acted simultaneously as both carrier and stabilizer for magnetic nanoparticles. In this method, the nanofluid as a new extraction solvent was rapidly injected into the aqueous sample, which led to improvement of the mass transfer of the analytes into the sorbent and reduction of the extraction time. In the screening step, the fractional factorial design was applied for selecting some important parameters which significantly affected the extraction procedure. The effective parameters were then optimized by Box-Behnken design. Under the optimal conditions, the limits of detection were in the range of 0.3-1.6 ng/mL. A good linear range was observed in the range of 1.0-500.0 ng/mL for water and 5.0-500.0 ng/mL for urine and plasma. The intra- and inter-day relative standard deviations were 2.7-3.2 and 1.9-4.5% for five replications, resp. Based on the results, the proposed method was successfully applied for the determination of warfarin in biol. samples, using high-performance liquid chromatog. This study involved multiple reactions and reactants, such as Tetramethylammonium chloride (cas: 75-57-0COA of Formula: C4H12ClN).

Tetramethylammonium chloride (cas: 75-57-0) belongs to organic chlorides. An organic chloride is an organic compound containing at least one covalently bonded atom of chlorine. Their wide structural variety and divergent chemical properties lead to a broad range of names and applications. The haloform reaction, using chlorine and sodium hydroxide, is also able to generate alkyl halides from methyl ketones, and related compounds. Chloroform was formerly produced thus.COA of Formula: C4H12ClN

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Preparation and ion separation properties of sub-nanoporous PES membrane with high chemical resistance was written by Wu, Shuhang;Cheng, Yaxiong;Ma, Jie;Huang, Qinggang;Dong, Yuhua;Duan, Jinglai;Mo, Dan;Sun, Youmei;Liu, Jie;Yao, Huijun. And the article was included in Journal of Membrane Science in 2021.Quality Control of Tetramethylammonium chloride The following contents are mentioned in the article:

The sub-nanochannel materials have attracted extensive attention because of the great potentials in ion separation and water filtration due to their unique ionic transport properties. However, effectively preparing the sub-nanoporous membranes with tunable channel size is still a challenge. In this study, a green and convenient method is introduced to prepare sub-nanoporous polyethersulfone (PES) membrane with highly aligned channels by swift heavy ion irradiation, UV sensitization, and water rinse. Through adjusting the membrane’s UV sensitization time, the channel diameter of sub-nanoporous PES membrane can be facilely regulated at sub-nanoscale, which is essential to design the tailor-made membranes for specific applications. It is found that ionic transport in sub-nanoporous PES membrane exhibits voltage-activated features associated with the ionic dehydration at angstrom-confined space, with the corresponding I-V characteristics showing a dependence on ion species, channel size, and solution pH. Such a membrane can work as an excellent ion-exchange membrane in electrodialysis ion separation, exhibiting a separation ratio of K⁺:Na⁺:Li⁺:Mg²⁺ as high as 83:56:14:1 and K⁺ transport rate up to 0.82 mol h^-1 m^-2 under 10 V driving force. It is proved that the sub-nanoporous PES membrane also possesses strong chem. and electrochem. tolerances, which are the prerequisites for future utilizations. This study involved multiple reactions and reactants, such as Tetramethylammonium chloride (cas: 75-57-0Quality Control of Tetramethylammonium chloride).

Tetramethylammonium chloride (cas: 75-57-0) belongs to organic chlorides. Organochlorines stimulate the central nervous system and cause convulsions, tremor, nausea, and mental confusion. Examples are dichlorodiphenyltrichloroethane (DDT), chlordane, lindane, endosulfan, and dieldrin. Alkyl chlorides are versatile building blocks in organic chemistry. While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available.Quality Control of Tetramethylammonium chloride

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Mechanistic Insight into the Reactivities of Aqueous-Phase Singlet Oxygen with Organic Compounds was written by Barrios, Benjamin;Mohrhardt, Benjamin;Doskey, Paul V.;Minakata, Daisuke. And the article was included in Environmental Science & Technology in 2021.Recommanded Product: 95-88-5 The following contents are mentioned in the article:

Singlet oxygen (¹O₂) is a selective reactive oxygen species that plays a key role for the fate of various organic compounds in the aquatic environment under sunlight irradiation, engineered water oxidation systems, atm. water droplets, and biomedical systems. While the initial rate-determining charge-transfer reaction mechanisms and kinetics of ¹O₂ have been studied extensively, no comprehensive studies have been performed to elucidate the reaction mechanisms with organic compounds that have various functional groups. In this study, we use d. functional theory calculations to determine elementary reaction mechanisms with a wide variety of organic compounds The theor. calculated aqueous-phase free energies of activation of single electron transfer and ¹O₂ addition reactions are compared to the exptl. determined rate constants in the literature to determine linear free-energy relationships. The theor. calculated free energies of activation for the groups of phenolates and phenols show excellent correlations with the Hammett constants that accept electron densities by through-resonance. The dominant elementary reaction mechanism is discussed for each group of compounds As a practical implication, we demonstrate the fate of environmentally relevant organic compounds induced by photochem. produced intermediate species at different pH and evaluate the impact of predicting rate constants to the half-life. This study involved multiple reactions and reactants, such as 4-Chlororesorcinol (cas: 95-88-5Recommanded Product: 95-88-5).

4-Chlororesorcinol (cas: 95-88-5) belongs to organic chlorides. An organic chloride is an organic compound containing at least one covalently bonded atom of chlorine. Their wide structural variety and divergent chemical properties lead to a broad range of names and applications. Alkyl chlorides are versatile building blocks in organic chemistry. While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available.Recommanded Product: 95-88-5

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Application of 2,4-bis(halomethyl)quinoline: synthesis and biological activities of 2,4-bis(benzofuran-2-yl)- and 2,4-bis(aroxymethyl)quinolines was written by Li, Yang;Xu, Qiqi;Li, Zhiyuan;Gao, Wentao;Chen, Yu. And the article was included in Molecular Diversity in 2020.Reference of 638-07-3 The following contents are mentioned in the article:

The synthesis of a new type of halomethylquinoline building block, i.e., Et 4-(bromomethyl)-2-(chloromethyl)quinoline-3-carboxylate, and its synthetic applications in the reaction with salicylaldehydes/o-acetylphenols R-2-HOC₆H₃C(O)R¹ [R = H, 5-MeO, 5-C(CH₃)₃, 3-F-5-C(CH₃)₃, etc.; R¹ = H, Me] or phenols R²C₆H₄OH [R² = H, 2-Me, 4-MeO, 2-F, 2-F-4-C(CH₃)₃, etc.] to make a range of structurally novel and intriguing 2,4-bis(benzofuran-2-yl)quinoline- I [R³ = 7-F-5-C(CH₃)₃, 7-Br-5-C(CH₃)₃, 3-Me-5-Br, etc.] and 2,4-bis(aroxymethyl)quinoline-3-carboxylic acids II is described. This newly synthesized compounds belong to a new class of quinoline derivatives, and their structures were elucidated on the basis of their spectral data and elemental analyses. Screening for in vitro anti-tubercular against Mycobacterium smegmatis and anti-bacterial activities against Bacillus subtilis, Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa was carried out. Compounds I [R² = 7-F-5-C(CH₃)₃ and 7-Br-5-C(CH₃)₃] showed significant anti-tubercular activity comparable with the reference rifampicin and might be used as promising candidates for further investigation. This study involved multiple reactions and reactants, such as Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3Reference of 638-07-3).

Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3) belongs to organic chlorides. Organic chlorides can be used in production of: PVC, pesticides, chloromethane, teflon, insulators. Alkyl chlorides are versatile building blocks in organic chemistry. While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available.Reference of 638-07-3

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Photoechogenic Inflatable Nanohybrids for Upconversion-Mediated Sonotheranostics was written by Jeong, Keunsoo;Kim, Dojin;Kim, Hyun Jun;Lee, Yong-Deok;Yoo, Jounghyun;Jang, Dohyub;Lee, Seokyung;Park, Hyeonjong;Kim, Youngsun;Singh, Ajay;Ahn, Dong June;Kim, Dong Ha;Bang, Joona;Kim, Jungahn;Prasad, Paras N.;Kim, Sehoon. And the article was included in ACS Nano in 2021.Related Products of 638-07-3 The following contents are mentioned in the article:

Hybrid nanostructures are promising for ultrasound-triggered drug delivery and treatment, called sonotheranostics. Structures based on plasmonic nanoparticles for photothermal-induced microbubble inflation for ultrasound imaging exist. However, they have limited therapeutic applications because of short microbubble lifetimes and limited contrast. Photochem.-based sonotheranostics is an attractive alternative, but building near-IR (NIR)-responsive echogenic nanostructures for deep tissue applications is challenging because photolysis requires high-energy (UV-visible) photons. Here, we report a photochem.-based echogenic nanoparticle for in situ NIR-controlled ultrasound imaging and ultrasound-mediated drug delivery. Our nanoparticle has an upconversion nanoparticle core and an organic shell carrying gas generator mols. and drugs. The core converts low-energy NIR photons into UV emission for photolysis of the gas generator. Carbon dioxide gases generated in the tumor-penetrated nanoparticle inflate into microbubbles for sonotheranostics. Using different NIR laser power allows dual-modal upconversion luminescence planar imaging and cross-sectional ultrasonog. Low-frequency (10 MHz) ultrasound stimulated microbubble collapse, releasing drugs deep inside the tumor through cavitation-induced transport. We believe that the photoechogenic inflatable hierarchical nanostructure approach introduced here can have broad applications for image-guided multimodal theranostics. This study involved multiple reactions and reactants, such as Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3Related Products of 638-07-3).

Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3) belongs to organic chlorides. Organochlorines stimulate the central nervous system and cause convulsions, tremor, nausea, and mental confusion. Examples are dichlorodiphenyltrichloroethane (DDT), chlordane, lindane, endosulfan, and dieldrin. Aliphatic organochlorides are often alkylating agents as chlorine can act as a leaving group, which can result in cellular damage.Related Products of 638-07-3

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics