Tag: 100-200

Copper-Catalyzed Alkyl-Alkyl Cross-Coupling Reactions Using Hydrocarbon Additives: Efficiency of Catalyst and Roles of Additives was written by Iwasaki, Takanori;Imanishi, Reiko;Shimizu, Ryohei;Kuniyasu, Hitoshi;Terao, Jun;Kambe, Nobuaki. And the article was included in Journal of Organic Chemistry in 2014.SDS of cas: 6294-17-3 The following contents are mentioned in the article:

Cross-coupling of alkyl halides with alkyl Grignard reagents proceeds with extremely high TONs of up to 1230000 using a Cu/unsaturated hydrocarbon catalytic system. Alkyl fluorides, chlorides, bromides, and tosylates are all suitable electrophiles, and a TOF as high as 31200 h^-1 was attained using an alkyl iodide. Side reactions of this catalytic system, i.e., reduction, dehydrohalogenation (elimination), and the homocoupling of alkyl halides, occur in the absence of additives. It appears that the reaction involves the β-hydrogen elimination of alkylcopper intermediates, giving rise to olefins and Cu-H species, and that this process triggers both side reactions and the degradation of the Cu catalyst. The formed Cu-H promotes the reduction of alkyl halides to give alkanes and Cu-X or the generation of Cu(0), probably by disproportionation, which can oxidatively add to alkyl halides to yield olefins and, in some cases, homocoupling products. Unsaturated hydrocarbon additives such as 1,3-butadiene and phenylpropyne play important roles in achieving highly efficient cross-coupling by suppressing β-hydrogen elimination, which inhibits both the degradation of the Cu catalyst and undesirable side reactions. This study involved multiple reactions and reactants, such as 1-Bromo-6-chlorohexane (cas: 6294-17-3SDS of cas: 6294-17-3).

1-Bromo-6-chlorohexane (cas: 6294-17-3) belongs to organic chlorides. Organochlorines are organic compounds having multiple chlorine atoms. They were the first synthetic pesticides that were used in agriculture. They are resistant to most microbial and chemical degradations. Aryl chlorides may be prepared by the Friedel-Crafts halogenation, using chlorine and a Lewis acid catalyst.SDS of cas: 6294-17-3

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

An efficient green approach for the synthesis of benzothiazole-linked pyranopyrazoles as promising pharmacological agents and docking studies was written by Mallikarjuna Reddy, Guda;Raul Garcia, Jarem;Venkata Subbaiah, Munagapati;Wen, Jet-Chau. And the article was included in Journal of Heterocyclic Chemistry in 2021.Safety of Ethyl 4-chloro-3-oxobutanoate The following contents are mentioned in the article:

Benzothiazole-tethered pyranopyrazoles derivatives I [R = H, 2-Cl, 4-O₂N, etc.] were prepared via environmentally favorable conditions, which included eco-friendly catalyst, ethanol-water solvent, one-pot reaction, and atom- and step-economy procedures. Excellent yield of the products was observed Besides, all products were screened for their antimicrobial behavior. From the biol. results, it was seen that most of the compounds possessed high to moderate antimicrobial properties. Compound I [R = 2-Me] gave prominent antimicrobial property followed by I [R = H, 2-MeO, 4-HO]. In addition, computer-aided studies of the active compounds were also conducted. In this, selected compounds were docked into the intercalation site of DNA of the DNA-gyrase complex. From these results, the highest binding energy of -10.1 kcal/mol was for I [R = 2-Me] against DNA-gyrase. This is the first eco-friendly synthetic method for the preparation of benzothiazole-pyranopyrazoles and the synthetic effort in this study may serve as a model for addnl. environmentally benign reactions. The biol. results may prompt further studies related to antibiotic drugs. This study involved multiple reactions and reactants, such as Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3Safety of Ethyl 4-chloro-3-oxobutanoate).

Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3) belongs to organic chlorides. Chlorination modifies the physical properties of hydrocarbons in several ways. These compounds are typically denser than water due to the higher atomic weight of chlorine versus hydrogen. 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.Safety of Ethyl 4-chloro-3-oxobutanoate

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

Alternative method for qualitative analysis of specific non-volatile organic compounds present in South African water systems was written by Brutti, R.;Magu, M. M.;Agorku, E. S.;Govender, P. P.. And the article was included in South African Journal of Chemistry in 2016.Safety of 4-Chlororesorcinol The following contents are mentioned in the article:

Currently, water quality assessment has become a necessity in order to maintain healthy living. Point and non-point sources of water pollutants are either organic or inorganic in nature. Non-volatile organic compounds (nVOCs) mostly exist as solids at room temperature and are used on a large scale in most chem. industries. Since these nVOCs are toxic to both animals and humans and some of these non-volatile organic compounds are carcinogenic, it is important to analyze the water in order to ascertain its quality by identifying which types of compounds arepresent in these systems and quantifying them. This work reports on the use of a new and alternative method for qual. anal. of nVOCs in water systems. Anal. was done for 13 sampling sites (seven from wastewater and six from surface water found in Gauteng and KwaZulu-Natal provinces, resp.).Vacuum evaporation followed by methanol extraction of the residues was performed. Fourier Transform IR (FTIR) was conducted using NaCl disk and KBr pellets and their results compared. High Performance Liquid Chromatog. (HPLC) was chosen as a technique for comparison and to prove that the simple IR (IR) can be used instead. In addition, HPLC is an ideal anal. technique for non-volatile substances. This study involved multiple reactions and reactants, such as 4-Chlororesorcinol (cas: 95-88-5Safety of 4-Chlororesorcinol).

4-Chlororesorcinol (cas: 95-88-5) 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. Aliphatic organochlorides are often alkylating agents as chlorine can act as a leaving group, which can result in cellular damage.Safety of 4-Chlororesorcinol

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

An unexpected strategy to alleviate hypoxia limitation of photodynamic therapy by biotinylation of photosensitizers was written by An, Jing;Tang, Shanliang;Hong, Gaobo;Chen, Wenlong;Chen, Miaomiao;Song, Jitao;Li, Zhiliang;Peng, Xiaojun;Song, Fengling;Zheng, Wen-Heng. And the article was included in Nature Communications in 2022.Quality Control of 4-Chlororesorcinol The following contents are mentioned in the article:

The most common working mechanism of photodynamic therapy is based on high-toxicity singlet oxygen, which is called Type II photodynamic therapy. But it is highly dependent on oxygen consumption. Recently, Type I photodynamic therapy has been found to have better hypoxia tolerance to ease this restriction. However, few strategies are available on the design of Type I photosensitizers. We herein report an unexpected strategy to alleviate the limitation of traditional photodynamic therapy by biotinylation of three photosensitizers (two fluorescein-based photosensitizers and the com. available Protoporphyrin). The three biotiylated photosensitizers named as compound 1, 2 and 3, exhibit impressive ability in generating both superoxide anion radicals and singlet oxygen. Moreover, compound 1 can be activated upon low-power white light irradiation with stronger ability of anion radicals generation than the other two. The excellent combinational Type I / Type II photodynamic therapy performance has been demonstrated with the photosensitizers 1. This work presents a universal protocol to provide tumor-targeting ability and enhance or trigger the generation of anion radicals by biotinylation of Type II photosensitizers against tumor hypoxia. This study involved multiple reactions and reactants, such as 4-Chlororesorcinol (cas: 95-88-5Quality Control of 4-Chlororesorcinol).

4-Chlororesorcinol (cas: 95-88-5) belongs to organic chlorides. Organic chlorides can cause corrosion in pipelines, valves and condensers, and cause catalyst poisoning. The hydrocarbon processing industry (HPI) and others are affected by damage caused by these substances. 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).Quality Control of 4-Chlororesorcinol

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

Development of magnetic dispersive micro-solid phase extraction based on magnetic agarose nanoparticles and deep eutectic solvents for the isolation and pre-concentration of three flavonoids in edible natural samples was written by Majidi, Seyedeh Maedeh;Hadjmohammadi, Mohammad Reza. And the article was included in Talanta in 2021.HPLC of Formula: 75-57-0 The following contents are mentioned in the article:

In the present study, an environmentally friendly magnetic dispersive micro-solid phase extraction was developed based on magnetic agarose nanoparticles and deep eutectic solvents for the isolation and pre-concentration of three flavonoids (morin, quercetin, and kaempferol) from dark tea, chocolate, vegetable, and fruit juice samples. In this method, deep eutectic solvents were synthesized from less toxic and low-cost substances under feasible conditions and used as eluents in the desorption process. These solvents can be considered as a green alternative to traditional organic reagents to increase the adsorption capacity and reduce the matrix interferences, dangerous waste generation and environmental pollution. A Plackett-Burman design was employed for screening the exptl. variables. The effective variables were then optimized by Box-Behnken design (BBD). Under the optimial conditions, the presented method demonstrated wide linear ranges of 1-500μg. L-1 for morin and quercetin, and 5-500μg. L-1 for kaempferol with satisfactory recoveries above 91%. Limit of detections (LODs) and quantifications (LOQs) of flavonoids varied in 0.2-1.1μg. L-1 and 0.66-3.63μg. L-1, resp. The precision of the proposed method was the range of 2.6-5.7%. This study involved multiple reactions and reactants, such as Tetramethylammonium chloride (cas: 75-57-0HPLC of Formula: 75-57-0).

Tetramethylammonium chloride (cas: 75-57-0) belongs to organic chlorides. Organic chlorides can cause corrosion in pipelines, valves and condensers, and cause catalyst poisoning. The hydrocarbon processing industry (HPI) and others are affected by damage caused by these substances. 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.HPLC of Formula: 75-57-0

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

Electron-beam patterned monolayer-protected gold nanoparticle interface layers on a chemiresistor vapor sensor array was written by Steinecker, William H.;Kim, Sun Kyu;Bohrer, Forest I.;Farina, Lee;Kurdak, Cagliyan;Zellers, Edward T.. And the article was included in IEEE Sensors Journal in 2011.Electric Literature of C6H12BrCl The following contents are mentioned in the article:

Use of electron-beam induced crosslinking (EBIX) to pattern films of thiolate-monolayer-protected gold-nanoparticles (MPNs) on chemiresistor (CR) vapor sensors is described. MPNs with alkyl, cyanoalkyl, phenoxyalkyl, and hydroxyfluoroalkyl thiolate tail groups were patterned on integrated arrays of interdigital electrodes using electron doses of 500-750 μC/cm². The d.c. resistances of solvent cast films of these MPNs decrease and the baseline-normalized changes in resistance to each of five organic vapors increase to different degrees with increasing electron-beam dose. Relative responses patterns from an array of MPN-coated CR sensors for the test vapors change after EBIX patterning and the diversity of responses is diminished, on average, but it is still projected to be sufficient for the discrimination of most of the individual test vapors and binary mixtures Results are rationalized in terms of expected changes in ligand structures and film properties following EBIX patterning using known models of electronic conduction, and vapor-induced changes of conduction, through MPN films. The implications of the results for creating arrays of densely packed MPN-coated CRs as detectors for microanal. systems are considered. This study involved multiple reactions and reactants, such as 1-Bromo-6-chlorohexane (cas: 6294-17-3Electric Literature of 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.While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available. Alkyl chlorides readily undergo attack by nucleophiles.Electric Literature of C6H12BrCl

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

Discovery of 1,3,4-oxadiazol-2-one-containing benzamide derivatives targeting FtsZ as highly potent agents of killing a variety of MDR bacteria strains was written by Bi, Fangchao;Song, Di;Qin, Yinhui;Liu, Xingbang;Teng, Yuetai;Zhang, Na;Zhang, Panpan;Zhang, Nan;Ma, Shutao. And the article was included in Bioorganic & Medicinal Chemistry in 2019.Category: chlorides-buliding-blocks The following contents are mentioned in the article:

The spread of infections caused by multidrug-resistant (MDR) pathogens, such as methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant S. aureus (VRSA), has created a need for new antibiotics with novel mechanisms of action. The bacterial division protein FtsZ has been identified as a novel drug target that can be exploited clin. As part of an ongoing effort to develop FtsZ-targeting antibacterial agents, we describe herein the design, synthesis and bioactivity of six series of novel 1,3,4-oxadiazol-2-one-containing, 1,2,4-triazol-3-one-containing and pyrazolin-5-one-containing benzamide derivatives Among them, the most potent antibacterial agent was identified and was much better than clin. drugs such as ciprofloxacin, linezolid, and erythromycin against all the tested gram-pos. strains, particularly methicillin-resistant, penicillin-resistant and clin. isolated S. aureus. Subsequent studies on biol. activities and docking analyses proved that it functioned as an effective compound targeting FtsZ. Preliminary SAR indicated a general direction for further optimization of these novel analogs. Taken together, this research provides a promising chemotype for developing newer FtsZ-targeting bactericidal agents. This study involved multiple reactions and reactants, such as Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3Category: chlorides-buliding-blocks).

Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3) belongs to organic chlorides. Chlorination modifies the physical properties of hydrocarbons in several ways. These compounds are typically denser than water due to the higher atomic weight of chlorine versus hydrogen. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. However, the extent of chlorination is difficult to control.Category: chlorides-buliding-blocks

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

Facile synthesis of carbon-11-labeled arylpiperazinylthioalkyl derivatives as new PET radioligands for imaging of 5-HT_1AR was written by Gao, Mingzhang;Wang, Min;Zheng, Qi-Huang. And the article was included in Applied Radiation and Isotopes in 2012.SDS of cas: 6294-17-3 The following contents are mentioned in the article:

Carbon-11-labeled arylpiperazinylthioalkyl derivatives, 2-((4-(4-(2-[¹¹C]methoxyphenyl)piperazin-1-yl)butyl)thio)benzo[d]oxazole ([¹¹C]5a), 2-((4-(4-(2-[¹¹C]methoxyphenyl)piperazin-1-yl)butyl)thio)-5,7-dimethylbenzo[d]oxazole ([¹¹C]5c), 2-((4-(4-(2-[¹¹C]methoxyphenyl)piperazin-1-yl)butyl)thio)benzo[d]thiazole ([¹¹C]5e), 2-((6-(4-(2-[¹¹C]methoxyphenyl)piperazin-1-yl)hexyl)thio)benzo[d]oxazole ([¹¹C]5g), 2-((6-(4-(2-[¹¹C]methoxyphenyl)piperazin-1-yl)hexyl)thio)-5,7-dimethylbenzo[d]oxazole ([¹¹C]5i), and 2-((6-(4-(2-[¹¹C]methoxyphenyl)piperazin-1-yl)hexyl)thio)benzo[d]thiazole ([¹¹C]5k), were prepared from their corresponding phenol precursors with [¹¹C]CH₃OTf through O-[¹¹C]methylation and isolated by a simplified solid-phase extraction (SPE) method using a Sep-Pak Plus C18 cartridge in 50-60% (n=5) radiochem. yields based on [¹¹C]CO₂ and decay corrected to end of bombardment (EOB). The overall synthesis time from EOB was 23 min, the radiochem. purity was >99%, and the specific activity at end of synthesis (EOS) was 277.5±92.5 GBq/μmol (n=5). This study involved multiple reactions and reactants, such as 1-Bromo-6-chlorohexane (cas: 6294-17-3SDS of cas: 6294-17-3).

1-Bromo-6-chlorohexane (cas: 6294-17-3) 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. 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.SDS of cas: 6294-17-3

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

Targeting of GLUT5 for transporter-mediated drug-delivery is contingent upon substrate hydrophilicity was written by Nahrjou, Nazanin;Ghosh, Avik;Tanasova, Marina. And the article was included in International Journal of Molecular Sciences in 2021.Name: Ethyl 4-chloro-3-oxobutanoate The following contents are mentioned in the article:

Specific link between high fructose uptake and cancer development and progression highlighted fructose transporters as potential means to achieve GLUT-mediated discrimination between normal and cancer cells. The gained expression of fructose-specific transporter GLUT5 in various cancers offers a possibility for developing cancer-specific imaging and bioactive agents. Herein, we explore the feasibility of delivering a bioactive agent through cancer-relevant fructose-specific transporter GLUT5. We employed specific targeting of GLUT5 by 2,5-anhydro-D-mannitol and investigated several drug conjugates for their ability to induce cancer-specific cytotoxicity. The proof-of-concept anal. was carried out for conjugates of chlorambucil (CLB) in GLUT5-pos. breast cancer cells and normal breast cells. The cytotoxicity of conjugates was assessed over 24 h and 48 h, and significant dependence between cancer-selectivity and conjugate size was observed The differences were found to relate to the loss of GLUT5-mediated uptake upon increased conjugate size and hydrophobicity. The findings provide information on the substrate tolerance of GLUT5 and highlight the importance of maintaining appropriate hydrophilicity for GLUT-mediated delivery. This study involved multiple reactions and reactants, such as Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3Name: Ethyl 4-chloro-3-oxobutanoate).

Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3) 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 readily react with amines to give substituted amines. Alkyl chlorides are substituted by softer halides such as the iodide in the Finkelstein reaction.Name: Ethyl 4-chloro-3-oxobutanoate

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

Synthesis and electrochemical properties of LiFePO₄ cathode material by ionic thermal method using eutectic mixture of tetramethyl ammonium chloride-urea was written by Li, Si-Nan;Luo, Shao-Hua;Yang, Liu;Wang, Qing;Zhang, Ya-Hui;Liu, Xin. And the article was included in Rare Metals (Beijing, China) in 2021.Recommanded Product: 75-57-0 The following contents are mentioned in the article:

In this study, the LiFePO₄ cathode was synthesized by the ionic thermal method using the deep eutectic mixture of tetra-Me ammonium chloride and urea. The synthetic conditions were systematically investigated by orthogonal experiments, which indicate that the optimal reaction time, reaction temperature, molar ratio of Li to DES and rotate speed are 96 h, 220 °C, 1:14 and 20 r·min ^-1, resp. X-ray diffraction (XRD), scanning electron microscope (SEM) and transmission electron microscope (TEM) were characterized to investigate the crystalline structure and morphol. of the obtained materials, indicating well-crystallized LiFePO₄ with olivine structure. And the phys. properties of LiFePO₄ were explored through Fourier transform IR spectroscopy (FTIR), ⁵⁷Fe Mossbauer absorption spectra and Raman spectra. An initial discharge capacity can reach 151 mAh·g^-1 at 0.1C rate for LiFePO₄ following by calcining at 600°C under the optimal conditions, and it retains 125.1 mAh·g^-1 after 100 cycles. These results demonstrated that the addition of ionic liquids can improve the rate performance, cycle performance and ion diffusion rate of LiFePO₄. This study involved multiple reactions and reactants, such as Tetramethylammonium chloride (cas: 75-57-0Recommanded Product: 75-57-0).

Tetramethylammonium chloride (cas: 75-57-0) belongs to organic chlorides. Organic chlorides can cause corrosion in pipelines, valves and condensers, and cause catalyst poisoning. The hydrocarbon processing industry (HPI) and others are affected by damage caused by these substances. 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: 75-57-0

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