Tag: 100-200

Electrocatalytic synthesis of α,α-gem-dihalide ketones from α-mono-halide ketones and unexpected dimer condensation was written by Zhou, Bei;He, Yu-Juan;Tao, Yun-Feng;Liu, Lan-Xiang;Hu, Min;Chang, Zu-Hui;Lei, Hong;Lin, Jun;Lin, Tong;Du, Guan-Ben. And the article was included in Green Chemistry in 2022.COA of Formula: C6H9ClO3 The following contents are mentioned in the article:

A novel, environmentally friendly electrocatalytic process was developed to prepare α,α-gem-dihalide (F, Cl, and Br) ketones from α-mono-halide ketones in an aqueous solution containing alkali halide salts. The gem-dihalides had the same or different halogens on the same carbon, depending on the reactant and inorganic halide salt used. An electron-withdrawing group, such as carbonyl, located at the α-site of mono-halogenated carbon, was essential to the reaction. The electrosyntheses were performed under ambient conditions without inert gas protection and displayed yields of about 80%. This method avoided the classical haloform elimination reaction. However, when the aqueous solution contained NaOH, two α-mono-halide ketone mols. had a special dimer condensation. The reaction mechanisms were explored by conducting GC-MS, EPR, and CV with DFT calculations These revealed that in situ generation of a halogen radical initiated electrocatalytic halogenation, while the dimer condensation involved a hydroxyl radical-mediated C1 fragment elimination. This study involved multiple reactions and reactants, such as Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3COA of Formula: C6H9ClO3).

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. 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).COA of Formula: C6H9ClO3

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

Aqueous-phase hydrodechlorination of model chlorinated organic compounds over Ru/C catalyst was written by Payal, Dipak D.;Vaidya, Prakash D.. And the article was included in Chemical Engineering Communications in 2018.Recommanded Product: 95-88-5 The following contents are mentioned in the article:

Effluents from the pharmaceutical and dye industries contain chlorinated organic pollutants. The effective treatment of such effluents constitutes a challenging task. 4-Chlororesorcinol (PCRE) and 4-chloro-2-aminophenol (PCAP) were selected as model chloro-organic compounds Catalytic hydrodechlorination (HDC) of PCRE and PCAP in the aqueous phase was investigated in a slurry reactor using com. carbon supported ruthenium catalyst. HDC reactions of PCRE and PCAP were studied over the ranges in temperature, 313-353 K, H₂ partial pressure, 0.69-2.76 MPa, and catalyst loading, 0.2-1.2 kg/M³. The performance of Ru/C catalyst for hydrodechlorination and ring saturation was promising. The kinetic data were modeled using Langmuir-Hinshelwood-Hougen-Watson kinetics. The HDC reaction of PCRE and PCAP using Ru/C catalyst proceeds via a dual-site mechanism, wherein at. H₂ reacts with the adsorbed organic substrate. The activation energy for the hydrodechlorination reactions of PCRE and PCAP was 41.6 and 49.4 kJ/mol, resp. 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. 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.Recommanded Product: 95-88-5

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

3-Piperidylethoxypterocarpan: A potential bone anabolic agent that improves bone quality and restores trabecular micro-architecture in ovariectomized osteopenic rats was written by Raghuvanshi, Ashutosh;Kumar, Amit;Tyagi, Abdul M.;Kureel, Jyoti;Awasthi, Pallavi;Purohit, Deepak;Mansoori, Mohd. Nizam;Shukla, Priyanka;Srivastava, Kamini;Gautam, Abnish K.;Saxena, Ruchi;Dwivedi, Anila;Singh, Divya;Goel, Atul. And the article was included in Molecular and Cellular Endocrinology in 2017.HPLC of Formula: 95-88-5 The following contents are mentioned in the article:

A series of new 6H-benzofuro[3, 2-c]chromenes (BFC, pterocarpans) with structure-activity relationships were investigated for their potential use in osteoporosis treatment. One of the BFCs 3-piperidylethoxypterocarpan 20 promotes osteoblast differentiation and mineralization at a dose as low as 1 pM via activation of ER/P38MAPK/BMP-2 pathway. When evaluated for in-vivo osteogenic activity in female Sprague-Dawley rats, BFC 20 increased bone mineral d. and new bone formation, compared with control at 1.0 and 10.0 mg/kg/body weight by oral gavage for 30 days. The compound was devoid of any uterotrophic effect and led to the new bone formation in adult ovariectomized osteopenic rats. BFC 20 compound also inhibited bone resorption by reducing Ovx induced increase in urinary CTx, thus exhibiting both bone anabolic and anti-catabolic action. Finally, BFC 20 treatment to Ovx rats led to improved trabecular microarchitectural restoration and exhibited therapeutic potential as a dual acting anti-osteoporotic agent for the management of osteoporosis. This study involved multiple reactions and reactants, such as 4-Chlororesorcinol (cas: 95-88-5HPLC of Formula: 95-88-5).

4-Chlororesorcinol (cas: 95-88-5) 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. 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: 95-88-5

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

Enhanced performance of lipase-catalyzed kinetic resolution of secondary alcohols in monoether-functionalized ionic liquids was written by Zhou, Hancheng;Chen, Jin;Ye, Linmin;Lin, Haiqiang;Yuan, Youzhu. And the article was included in Bioresource Technology in 2011.Application of 6294-17-3 The following contents are mentioned in the article:

Several cationic monoether-functionalized ionic liquids (MEF-ILs) with different substituents were synthesized and used as media for kinetic resolution of secondary alcs. catalyzed by several lipases. The results indicate that Novozym 435 (an immobilized Candida antarctica Lipase B) had higher efficiency compared to other lipases in deracemization. The alkyl substituents at the 2- and 3-positions in the imidazolium ring of MEF-ILs were found to contribute to the increased enantioselectivity and enhancement of the reaction rate, resp., while the higher stereo-hindrance of ether bonds decreased the activity. An enantioselectivity higher than 99% with 50% conversion of rac-1-phenylethanol was achieved using the catalyst system comprised of Novozym 435 and the MEF-IL 1-(3-ethoxypropyl)-2,3-dimethylimidazolium bis(trifluoromethylsulfonyl)imide. The catalytic system could be separated and reused without considerable activity loss. MEF-ILs can be a new class of enzyme-benign media suitable for lipase-catalyzed kinetic resolution of secondary alcs. This study involved multiple reactions and reactants, such as 1-Bromo-6-chlorohexane (cas: 6294-17-3Application of 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. 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.Application of 6294-17-3

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

Supramolecular hydrogelation via host-guest anion recognition: Lamellar hydrogel materials for the release of cationic cargo was written by Kokan, Zoran;Duskova-Smrckova, Miroslava;Sindelar, Vladimir. And the article was included in Chem in 2021.COA of Formula: C4H12ClN The following contents are mentioned in the article:

Hydrogelation triggered by host-guest anion recognition is difficult to achieve due to the challenging anion recognition in water and de novo gelator design. Herein, we report such a hydrogel system, based on bambus[6]uril anion receptor, BU. Albeit not a gelator per se, BU formed hydrogels selectively in the presence of iodides or perchlorates. Anion recognition by BU governed the hydrogelation, indicated by the NMR, ATR-IR, and single-crystal X-ray. Gelation mechanism and lamellar nature of the network structure were elucidated by SAXS, cryoSEM, and holotomog. methods. Rheol. characterization revealed the hydrogels were stable and relatively strong. In physiol. saline solutions, the hydrogels released cationic cargo by cation metathesis, leading to a gel-to-gel transformation. Choline derivatives, as model drugs, exhibited slow release from the hydrogels. Our simple hydrogel system may inspire the design of smart materials based on host-guest anion recognition, where the release or sequestration of specific charged species are desirable. 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. Organic chlorides are compounds containing a carbon-chlorine bond, which are widely used in the oil field as a wax dissolver. Aryl chlorides may be prepared by the Friedel-Crafts halogenation, using chlorine and a Lewis acid catalyst.COA of Formula: C4H12ClN

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

Deconstructing Noncovalent Kelch-like ECH-Associated Protein 1 (Keap1) Inhibitors into Fragments to Reconstruct New Potent Compounds was written by Pallesen, Jakob S.;Narayanan, Dilip;Tran, Kim T.;Solbak, Sara M. Oe.;Marseglia, Giuseppe;Soerensen, Louis M. E.;Hoej, Lars J.;Munafo, Federico;Carmona, Rosa M. C.;Garcia, Anthony D.;Desu, Haritha L.;Brambilla, Roberta;Johansen, Tommy N.;Popowicz, Grzegorz M.;Sattler, Michael;Gajhede, Michael;Bach, Anders. And the article was included in Journal of Medicinal Chemistry in 2021.Recommanded Product: 638-07-3 The following contents are mentioned in the article:

Targeting the protein-protein interaction (PPI) between nuclear factor erythroid 2-related factor 2 (Nrf2) and Kelch-like ECH-associated protein 1 (Keap1) is a potential therapeutic strategy to control diseases involving oxidative stress. Here, six classes of known small-mol. Keap1-Nrf2 PPI inhibitors were dissected into 77 fragments in a fragment-based deconstruction reconstruction (FBDR) study and tested in four orthogonal assays. This gave 17 fragment hits of which six were shown by X-ray crystallog. to bind in the Keap1 Kelch binding pocket. Two hits were merged into pyrazole I with a 220-380-fold stronger affinity (K_i = 16μM) relative to the parent fragments. Systematic optimization resulted in several novel analogs with K_i values of 0.04-0.5μM, binding modes determined by X-ray crystallog., and enhanced microsomal stability. This demonstrates how FBDR can be used to find new fragment hits, elucidate important ligand-protein interactions, and identify new potent inhibitors of the Keap1-Nrf2 PPI. This study involved multiple reactions and reactants, such as Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3Recommanded Product: 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.Recommanded Product: 638-07-3

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

Small Variations, Big Impact: Structural Diversity of the Complexes of a Phosphane-Decorated Benzenedithiol with Group-11 Metals was written by Schlindwein, Simon H.;Nieger, Martin;Gudat, Dietrich. And the article was included in European Journal of Inorganic Chemistry in 2021.Category: chlorides-buliding-blocks The following contents are mentioned in the article:

Reaction of a phosphine-decorated benzenedithiol (pbdtH₂) with coinage metal salts furnished polynuclear complexes [M₂(pbdtH)₂] (M = Au^I) or [cat][M₅(pbdt)₃] (cat = unipos. cation, M = Ag^I, Cu^I), which were characterized by anal. and spectroscopic techniques and single-crystal x-ray diffraction studies. Also, a double salt with an anion [Ag₅(pbdt)₃(PPh₃)]^– that proved unstable in solution was characterized crystallog. The spectroscopic and crystallog. data revealed that the Cu(I) and Ag(I) complexes exhibit, despite their like stoichiometric composition, isomeric mol. structures. The observed disparities were reproduced by DFT studies. The dinuclear Au(I) complex was found to undergo air-oxidation to furnish a mixed-valent complex [(Au^III)₂(Au^I)₂(pbdt)₄]. The copper(I) – but not the isomeric silver(I) complexes – showed luminescence in the solid state. This study involved multiple reactions and reactants, such as Tetramethylammonium chloride (cas: 75-57-0Category: chlorides-buliding-blocks).

Tetramethylammonium chloride (cas: 75-57-0) 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. 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.Category: chlorides-buliding-blocks

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

Characterization of a novel aldo-keto reductase with anti-Prelog stereospecificity from Corallococcus sp. EGB was written by Zhang, Yajuan;Duan, Yajuan;Zhong, Lingli;Li, Zhoukun;Cui, Zhongli;Yan, Huang. And the article was included in International Journal of Biological Macromolecules in 2020.Related Products of 638-07-3 The following contents are mentioned in the article:

The asym. reduction of prochiral ketones is a promising process for synthesis of optically active alcs. The aldo-keto reductase (AKR) is an attractive candidate of biocatalyst, due to its high enantioselectivity and environmentally friendly reaction conditions. In this work, nine putative AKR encoding genes from Corallococcus sp. EGB were cloned and expressed in Escherichia coli. Of these produced enzymes (CoAKRs), CoAKR7 exhibited reductive activity to various ketones and ketoesters, especially very high activity toward Et 4-chloro-3-oxobutanoate (COBE) with NADPH as the coenzyme. The CoAKR7 was optimally active at pH 7.0 and 50 °C. The apparent K_m and V_max for COBE was 14.18 U/mg and 0.269 mM, resp. Moreover, CoAKR7 catalyzed an anti-Prelog reduction of COBE to (S)-ethyl-4-chloro-3-hydroxybutanoate (CHBE) with e.e. >99%. Enzyme-substrate-cofactor docking anal. elucidated the mol. mechanism of the substrate stereospecificity, providing basis for protein engineering of these enzymes for applications in the synthesis of valuable chems. 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. 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 readily react with amines to give substituted amines. Alkyl chlorides are substituted by softer halides such as the iodide in the Finkelstein reaction.Related Products of 638-07-3

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

Simulating intergrowth formation in zeolite crystals: impact on habit and functionality was written by Trueman, Mollie;Akporiaye, Duncan;Anderson, Michael W.. And the article was included in Faraday Discussions in 2021.SDS of cas: 75-57-0 The following contents are mentioned in the article:

A kinetic Monte-Carlo methodol. is presented for simulating crystal growth in materials which contain stacking faults. By simulating a large number of potential growth and dissolution events, a representation of the crystal is generated at various stages throughout the crystallization, allowing the effects of disorder on the evolution of crystal habit and nanoscale surface topog. to be explored. As examples, simulations were performed on two intergrown zeolite materials – zeolite T and zeolite beta. In both zeolite T and zeolite beta, simulations demonstrate how an intergrown structure leads to a characteristic roughening of certain crystal facets. In zeolite beta, this is accompanied by the development of internal defects which shows a non-homogeneous distribution. Results of simulations are validated by direct comparison to exptl. SEM, at. force microscopy and X-ray diffraction data. All simulations are performed using the CrystalGrower software package with modifications to account for disorder and should be generally applicable to all classes of crystals. This study involved multiple reactions and reactants, such as Tetramethylammonium chloride (cas: 75-57-0SDS of cas: 75-57-0).

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.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.SDS of cas: 75-57-0

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

Assessment of COSMO-SAC Predictions for Solid-Liquid Equilibrium in Binary Eutectic Systems was written by Peng, Daili;Alhadid, Ahmad;Minceva, Mirjana. And the article was included in Industrial & Engineering Chemistry Research in 2022.Safety of Tetramethylammonium chloride The following contents are mentioned in the article:

As green and sustainable solvents, deep eutectic solvents (DESs) have received wide attention in various fields. Predictions of solid-liquid equilibrium (SLE) make it easier to choose DES constituents from a large pool of potential compounds The conductor-like screening model for segment activity coefficient (COSMO-SAC) predictions for the SLE of 94 nonsalt and 122 salt-based binary eutectic systems was evaluated in this study. It was found that the COSMO-SAC model can provide satisfactory predictions for the eutectic point of most nonsalt eutectic systems. Similar results were obtained when using the ideal solution model. The salt was represented in salt-based eutectic systems using one of two methods: as an ion pair or as fully dissociated ions. COSMO-SAC predictions for salt-based eutectic systems were unsatisfactory regardless of the salt representation method used. This inaccuracy in predicting SLE in the salt-based eutectic systems is not only due to model limitations but also due to the lack of reliable melting properties for thermally unstable salts. This study involved multiple reactions and reactants, such as Tetramethylammonium chloride (cas: 75-57-0Safety of Tetramethylammonium chloride).

Tetramethylammonium chloride (cas: 75-57-0) 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. Aliphatic organochlorides are often alkylating agents as chlorine can act as a leaving group, which can result in cellular damage.Safety of Tetramethylammonium chloride

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