Category: ethers-buliding-blocks

Chen, Junjun; Hua, Kaimin; Liu, Xiaofang; Deng, Yuchao; Wei, Baiyin; Wang, Hui; Sun, Yuhan published the artcile< Selective Production of Linear Aldehydes and Alcohols from Alkenes using Formic Acid as Syngas Surrogate>, Quality Control of 52244-70-9, the main research area is alkene formic acid rhodium regioselective hydroformylation catalyst; aldehyde linear preparation; formic acid alkene rhodium Shvo regioselective hydroxymethylation catalyst; alc linear preparation; formic acid; hydroformylation; hydroxymethylation; linear alcohol; tandem reaction.

Performing carbonylation without the use of carbon monoxide for high-value-added products is an attractive yet challenging topic in sustainable chem. Herein, effective methods for producing linear aldehydes or alcs. selectively with formic acid as both carbon monoxide and hydrogen source have been described. Linear-selective hydroformylation of alkenes proceeds smoothly with up to 88% yield and >30 regioselectivity in the presence of single Rh catalyst. Strikingly, introducing Ru into the system, the dual Rh/Ru catalysts accomplish efficient and regioselective hydroxymethylation in one pot. The present processes utilizing formic acid as syngas surrogate operate simply under mild condition, which opens a sustainable way for production of linear aldehydes and alcs. without the need for gas cylinders and autoclaves. As formic acid can be readily produced via CO2 hydrogenation, the protocols represent indirect approaches for chem. valorization of CO2.

Chemistry – A European Journal published new progress about Alcohols Role: SPN (Synthetic Preparation), PREP (Preparation). 52244-70-9 belongs to class ethers-buliding-blocks, and the molecular formula is C11H16O2, Quality Control of 52244-70-9.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

McPherson, Andrew K.; Capaldi, Daniel; Chen, Lijian; Olsen, Philip published the artcile< An Improved Process for the Manufacture of 5'-O-(4,4'-Dimethoxytrityl)-N2-isobutyryl-2'-O-(2-methoxyethyl)guanosine>, Category: ethers-buliding-blocks, the main research area is alkylation aminopurine riboside bromomethoxyethane nucleoside nucleotide preparation enzymic.

A revised, optimized process for the manufacture of 5′-O-(4,4′-dimethoxytrityl)-N2-isobutyryl-2′-O-(2-methoxyethyl)guanosine (MOE G PNS) that controls critical impurities to less than 0.2% was developed. The 2′-O-alkylation of 2,6-diaminopurine riboside (DAPR) with 1-bromo-2-methoxyethane (MOE-Br) in DMSO was examined using a DOE approach, which lead to the selection of LiOH as the optimal base choice. DMSO was removed with a solid-phase extraction using SP-207 resin, affording the desired 2′-O-(2-methoxyethyl)-2,6-diaminopurine riboside (MOE DAPR) in an aqueous solution in 53% yield. The methylbromide impurity commonly found in bulk source MOE-Br was controlled using a co-distillation with MEK, thereby controlling the resulting critical 2′-O-Me nucleoside impurity. The aqueous solution was telescoped into the enzymic conversion of MOE-DAPR to 2′-O-(2-methoxyethyl)guanosine (MOE G) using adenosine deaminase. MOE G purity is enhanced at this step due to enzymic selectivity and crystallization from the reaction mixture, which together significantly reduce levels of the 3′ MOE G isomer. The improved process was carried out at production-scale to afford 59 kg of MOE G PNS with no critical impurity over 0.2% in an overall yield of 26%.

Organic Process Research & Development published new progress about Alkylation. 6482-24-2 belongs to class ethers-buliding-blocks, and the molecular formula is C3H7BrO, Category: ethers-buliding-blocks.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Amanchukwu, Chibueze V.; Yu, Zhiao; Kong, Xian; Qin, Jian; Cui, Yi; Bao, Zhenan published the artcile< A New Class of Ionically Conducting Fluorinated Ether Electrolytes with High Electrochemical Stability>, Quality Control of 6482-24-2, the main research area is ionically conducting fluorinated ether electrolyte high electrochem stability.

Increasing battery energy d. is greatly desired for applications such as portable electronics and transportation. However, many next-generation batteries are limited by electrolyte selection because high ionic conductivity and poor electrochem. stability are typically observed in most electrolytes. For example, ether-based electrolytes have high ionic conductivity but are oxidatively unstable above 4 V, which prevents the use of high-voltage cathodes that promise higher energy densities. In contrast, hydrofluoroethers (HFEs) have high oxidative stability but do not dissolve lithium salt. In this work, we synthesize a new class of fluorinated ether electrolytes that combine the oxidative stability of HFEs with the ionic conductivity of ethers in a single compound We show that conductivities of up to 2.7 x 10-4 S/cm (at 30°C) can be obtained with oxidative stability up to 5.6 V. The compounds also show higher lithium transference numbers compared to typical ethers. Furthermore, we use NMR (NMR) and mol. dynamics (MD) to study their ionic transport behavior and ion solvation environment, resp. Finally, we demonstrate that this new class of electrolytes can be used with a Ni-rich layered cathode (NMC 811) to obtain over 100 cycles at a C/5 rate. The design of new mols. with high ionic conductivity and high electrochem. stability is a novel approach for the rational design of next-generation batteries.

Journal of the American Chemical Society published new progress about Battery cathodes. 6482-24-2 belongs to class ethers-buliding-blocks, and the molecular formula is C3H7BrO, Quality Control of 6482-24-2.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Huber, Daniela; Loeber, Stefan; Huebner, Harald; Gmeiner, Peter published the artcile< Bivalent molecular probes for dopamine D2-like receptors>, Application of C8H9BrO2, the main research area is arylamidoalkyl substituted phenylpiperazine preparation D2 dopamine receptor structure activity.

Merging two arylamidoalkyl substituted phenylpiperazines as prototypical recognition elements for dopamine D 2-like receptors by oligoethylene glycol linkers led to a series of bivalent ligands. These dimers were investigated in comparison to their monomeric analogs for their dopamine D2long, D2short, D3 and D4 receptor binding. Radioligand binding experiments revealed strong bivalent effects for some para-substituted benzamide derivatives For the D3 subtype, the target compounds showed an up to 70-fold increase of affinity and a substantial enhancement of subtype selectivity when compared to the monovalent analog. Anal. of the binding curves displayed Hill slopes very close to one indicating that the bivalent ligands displace 1 equiv of radioligand. Obviously, the two pharmacophores occupy an orthosteric and an allosteric binding site rather than adopting a receptor-bridging binding mode.

Bioorganic & Medicinal Chemistry published new progress about Dopamine D2 receptors Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 17100-64-0 belongs to class ethers-buliding-blocks, and the molecular formula is C8H9BrO2, Application of C8H9BrO2.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Newar, Rajashree; Begum, Wahida; Akhtar, Naved; Antil, Neha; Chauhan, Manav; Kumar, Ajay; Gupta, Poorvi; Malik, Jaideep; Balendra; Manna, Kuntal published the artcile< Mono-Phosphine Metal-Organic Framework-Supported Cobalt Catalyst for Efficient Borylation Reactions>, Safety of 2-(2-Methoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, the main research area is borylation aromatic compound cobalt metal organic framework catalyst; hydroboration alkene styrene cobalt metal organic framework catalyst; crystal structure phenylphosphine cobalt chloride; mol structure phenylphosphine cobalt chloride; aryl alkyl boronic acid ester preparation.

The authors report a metal-organic framework (MOF) supported monoligated phosphine-Co complex, which is an active heterogeneous catalyst for aromatic C-H borylation and alkene hydroboration. The mono(phosphine)-Co catalyst (MOF-P-Co) was prepared by metalation of a porous triarylphosphine-functionalized MOF (MOF-P) with CoCl2 followed by activation with NaEt3BH. The MOF catalyst has a broad substrate scope with excellent functional group tolerance to afford arene- and alkyl-boronate esters in excellent yields and selectivity. MOF-P-Co gave a turnover number (TON) of 30,000 and could be recycled and reused at least 13 times in arene C-H borylation. Importantly, the attempt to prepare the homogeneous control (Ph3P-Co) using PPh3 was unsuccessful due to the facile disproportionation reactions or intermol. ligand exchanges in the solution In contrast, the site isolation of the active mono(phosphine)-Co species within the MOF affords the robust and coordinatively unsaturated metal complexes, allowing to explore their catalytic properties and the reaction mechanism.

European Journal of Inorganic Chemistry published new progress about Alkenes Role: RCT (Reactant), RACT (Reactant or Reagent). 190788-60-4 belongs to class ethers-buliding-blocks, and the molecular formula is C13H19BO3, Safety of 2-(2-Methoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Davidescu, C. M.; Parvulescu, V.; Popa, A.; Burciu, F.; Vass, M.; Luca, C. published the artcile< Effect of polymer-supported onium salts on the phase transfer and catalytic activity of hydrogen peroxide in triphase catalysis>, COA of Formula: C17H37NO2, the main research area is phase transfer polymer supported onium salt; triphase catalysis hydrogen peroxide benzyl alc.

The catalytic effects of quaternary ammonium and/or phosphonium salts grafted on polymer-supports, on the reaction of hydrogen peroxide with benzyl alc. in a triphase system have been studied. A wide variety of catalysts with different quaternary groups and different quaternary chain length substituents were examined The activity of single “”onium”” salts increases as a consequence of the association of ammonium and phosphonium salts grafted on the same polymeric support.

Buletinul Stiintific al Universitatii “Politehnica” din Timisoara Romania, Seria Chimie si Mediului published new progress about Catalysis. 18312-57-7 belongs to class ethers-buliding-blocks, and the molecular formula is C17H37NO2, COA of Formula: C17H37NO2.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Atkinson, Robert S.; Green, Richard H. published the artcile< 1,5-Hydride shifts in acyclic systems containing α,β-unsaturated ketones and p-methoxyphenyl groups>, Reference of 52244-70-9, the main research area is ketone unsaturated rearrangement mechanism; hydride shift rearrangement ketone.

D-labeling showed that the acid-catalyzed rearrangement of p-HOC6H4(CH2)2CR2CH2CH:CHCOMe (I, R = H) to 2-(p-hydroxyphenyl)cyclohexyl Me ketone involved an intramol. H shift. A similar rearrangement was observed for I (R = Me) and its aromatic Me ether but not analogous products were obtained from p-MeOC6H4CHR(CH2)2CH:CHCOMe (R = H, p-MeOC6H4) under the same reaction conditions.

Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999) published new progress about Hydride shift. 52244-70-9 belongs to class ethers-buliding-blocks, and the molecular formula is C11H16O2, Reference of 52244-70-9.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Herdman, Christine A.; Devkota, Laxman; Lin, Chen-Ming; Niu, Haichan; Strecker, Tracy E.; Lopez, Ramona; Liu, Li; George, Clinton S.; Tanpure, Rajendra P.; Hamel, Ernest; Chaplin, David J.; Mason, Ralph P.; Trawick, Mary Lynn; Pinney, Kevin G. published the artcile< Structural interrogation of benzosuberene-based inhibitors of tubulin polymerization>, Recommanded Product: 3-Methoxy-2-methylbenzaldehyde, the main research area is preparation benzosuberene tubulin polymerization inhibitor.

The discovery of 3-methoxy-9-(3′,4′,5′-trimethoxyphenyl)-6,7-dihydro-5H-benzo[7]annulen-4-ol (a benzosuberene-based analog referred to as KGP18) was originally inspired by the natural products colchicine and combretastatin A-4 (CA4). The relative structural simplicity and ease of synthesis of KGP18, coupled with its potent biol. activity as an inhibitor of tubulin polymerization and its cytotoxicity (in vitro) against human cancer cell lines, has resulted in studies focused on new analog design and synthesis. The goal was to probe the relationship of structure to function in this class of anticancer agents. A series of twenty-two new benzosuberene-based analogs of KGP18 was designed and synthesized. These compounds vary in their methoxylation pattern and sep. incorporate trifluoromethyl groups around the pendant aryl ring for the evaluation of the effect of functional group modifications on the fused six-membered aromatic ring. In addition, the 8,9-saturated congener of KGP18 has been synthesized to assess the necessity of unsaturation at the carbon atom bearing the pendant aryl ring. Six of the mols. from this benzosuberene-series of compounds were active (IC50 < 5 μM) as inhibitors of tubulin polymerization while four analogs were comparable (IC50 approx. 1 μM) in their tubulin inhibitory activity to CA4 and KGP18. The potency of a bis-trifluoromethyl analog I and the unsaturated KGP18 derivative II as inhibitors of tubulin assembly along with their moderate cytotoxicity suggested the potential utility of these compounds as vascular disrupting agents (VDAs) to selectively target microvessels feeding tumors. Accordingly, water-soluble and DMSO-soluble phosphate prodrug salts of each were synthesized for preliminary in vivo studies to assess their potential efficacy as VDAs. Bioorganic & Medicinal Chemistry published new progress about Antitumor agents. 56724-03-9 belongs to class ethers-buliding-blocks, and the molecular formula is C9H10O2, Recommanded Product: 3-Methoxy-2-methylbenzaldehyde.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Wang, Xiaomei; Qian, Jianqiang; Zhu, Peng; Hua, Rong; Liu, Ji; Hang, Jiaying; Meng, Chi; Shan, Wenpei; Miao, Jiefei; Ling, Yong published the artcile< Novel Phenylmethylenecyclohexenone Derivatives as Potent TrxR Inhibitors Display High Antiproliferative Activity and Induce ROS, Apoptosis, and DNA Damage>, Related Products of 6482-24-2, the main research area is Phenylmethylenecyclohexenone derivative TrxR inhibitor ROS antiproliferative DNA damage anticancer; Antiproliferative activities; Aqueous solubility; DNA damage; Phenylmethylenecyclohexenone; Reactive oxygen species; Thioredoxin reductase.

The natural product piperlonguminine (PL) has been shown to exert potential anticancer activity against several types of cancer via elevation of reactive oxidative species (ROS). However, the application of PL has been limited due to its poor water solubility and moderate activity. To improve PL′s potency, we designed and synthesized a series of 17 novel phenylmethylenecyclohexenone derivatives and evaluated their pharmacol. properties. Most of them exerted antiproliferative activities against four cancer cell lines with IC50 values lower than PL. Among these, compound 10 e not only showed good water solubility and exerted the most potent antiproliferative activity against HGC27 cells (IC50=0.76 μM), which was 10-fold lower than PL (IC50=7.53 μM), but also exhibited lower cytotoxicity in human normal gastric epithelial cells GES-1 compared with HGC27 cells. Mechanistically, compound 10 e inhibited thioredoxin reductase (TrxR) activity, increased ROS levels, and diminished mitochondrial transmembrane potential (MTP) in HGC27 cells. Furthermore, 10 e also induced G2/M cell-cycle arrest, and triggered cancer cell apoptosis through the regulation of apoptotic proteins. Finally, 10 e promoted DNA damage in HGC27 cells via the activation of the H2AX(S139ph) and p53 signaling. In conclusion, 10 e, with prominent tumor selectivity and water solubility, could be a promising candidate for the treatment of cancer and, as such, warrants further investigation.

ChemMedChem published new progress about Antiproliferative agents. 6482-24-2 belongs to class ethers-buliding-blocks, and the molecular formula is C3H7BrO, Related Products of 6482-24-2.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Zhang, Zhenhua; Gorski, Bartosz; Leonori, Daniele published the artcile< Merging Halogen-Atom Transfer (XAT) and Copper Catalysis for the Modular Suzuki-Miyaura-Type Cross-Coupling of Alkyl Iodides and Organoborons>, HPLC of Formula: 190788-60-4, the main research area is alkyl iodide aryl organoboron copper catalyst Suzuki Miyaura coupling; aryl alkane preparation.

A mechanistically distinct approach to achieve Suzuki-Miyaura-type cross-couplings between alkyl iodides and aryl organoborons was reported. This process required a copper catalyst but, in contrast with previous approaches based on palladium and nickel systems, does not utilizes the metal for the activation of the alkyl electrophile. Instead, this strategy exploited the halogen-atom transfer ability of α-aminoalkyl radicals to convert secondary alkyl iodides into the corresponding alkyl radicals that then were coupled with aryl, vinyl, alkynyl, benzyl and allyl boronate species. These novel coupling reactions feature simple set up and conditions (1 h at room temperature) and facilitate access to privileged motifs targeted by the pharmaceutical sector.

Journal of the American Chemical Society published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 190788-60-4 belongs to class ethers-buliding-blocks, and the molecular formula is C13H19BO3, HPLC of Formula: 190788-60-4.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem