Category: 112-63-0

Parzuchowski, Pawel G.; Swiderska, Aleksandra; Roguszewska, Marlena; Rolinska, Karolina; Wolosz, Dominik; Maminski, Mariusz published the artcile< Hyperbranched poly(ether-siloxane)s containing ammonium groups: Synthesis, characterization and catalytic activity>, Reference of 112-63-0, the main research area is trimethylammonium polyether siloxane hyperbranched polymer anionic ring opening copolymerization; carbon dioxide oxirane ethylene carbonate cycloaddition catalyst; carbon dioxide; catalysis; cycloaddition; ethylene carbonate; hyperbranched polymer; oxirane; polyglycidol; polysiloxane.

In this article we report an easy synthetic route towards hyperbranched polyglycerols (Amm-HBPGs) containing trimethylammonium groups and siloxane or hydroxyl end-groups. Siloxane derivatives of Amm-HBPGs were synthesized in an efficient five-step procedure including an anionic ring opening copolymerization of the phthalimide-epoxy monomer with glycidol, followed by reactions with allyl bromide, hydrosilylation with hydrogenheptamethyltrisiloxane, hydrazinolysis of phthalimide groups and quaternization of resulting amine groups with Me iodide. Hydroxyl derivatives were obtained by quaternization of previously reported aminated HBPG’s with Me iodide. Polymeric products were characterized using various NMR techniques, FTIR, and elemental anal. Both Amm-HBPGs were shown to be effective in catalysis of addition of CO2 to oxirane. The hydrophilic catalysts showed higher efficiency but synthesis of ethylene carbonate was accompanied by formation of small amounts of ethylene glycol. The siloxane-containing catalyst was easily separable from reaction mixture showing high potential in the process of converting carbon dioxide into valuable chem. raw materials.

Polymers (Basel, Switzerland) published new progress about Anion exchange. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Reference of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Zheng, Leizhi; Yang, Guoqiang; Liu, Jia; Jiang, Bowen; Yu, Ting; Hu, Xingbang; Zhang, Zhibing published the artcile< Efficient chemical fixation of CO2 to form switchable ionic liquid to synthesize benzimidazolones under mild conditions>, Application of C19H34O2, the main research area is dihydrobenzimidazolone green preparation; benzene diamine carbon dioxide carbonylation catalyst diazabicyclononene.

In this work, a novel pathway to synthesize benzimidazolone derivatives I [R = 5-Me, 5-MeO, 5,6-di-Me] via the carbonylation of o-phenylenediamines with carbon dioxide under mild conditions (e.g., 50°C, 0.5 MPa) in the presence of 1,5-diazabicyclo[4.3.0]non-5-ene (DBN) was reported. In this progress, the DBN, acting as superbase, could form strong intermol. hydrogen bonds with o-phenylenediamines. The carbon dioxide was chem. fixed to form switchable ionic liquids (SILs). Then, CH2Br2 as a dehydrant easily involved parallel attack carbamates salts to form leaving group. To the best of our knowledge, this protocol provided a sustainable technique for the production of benzimidazolones under mild conditions.

Chemical Engineering Journal (Amsterdam, Netherlands) published new progress about Aromatic diamines Role: RCT (Reactant), RACT (Reactant or Reagent). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Application of C19H34O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Oishi, Shinya; Watanabe, Toshiaki; Sawada, Jun-ichi; Asai, Akira; Ohno, Hiroaki; Fujii, Nobutaka published the artcile< Kinesin Spindle Protein (KSP) Inhibitors with 2,3-Fused Indole Scaffolds>, Formula: C19H34O2, the main research area is structure preparation kinesin spindle protein inhibitor fused indole scaffold.

Mitotic kinesin spindle protein (KSP) is involved in the assembly of the bipolar spindle during cell division. On the basis of a common 2,3-fused indole substructure within the complex frameworks of terpendole E and other KSP inhibitors, the carbazoles with a bulky alkyl group were identified as a novel KSP inhibitory scaffold. Addnl., among several naturally occurring cell growth inhibitors with 2,3-fused indole structures, β-carboline alkaloids, harman and harmine, showed moderate inhibition of KSP.

Journal of Medicinal Chemistry published new progress about Antitumor agents. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Formula: C19H34O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Bisbach, Celia M.; Hass, Daniel T.; Thomas, Eric D.; Cherry, Timothy J.; Hurley, James B. published the artcile< Monocarboxylate transporter 1 (MCT1) mediates succinate export in the retina>, Reference of 112-63-0, the main research area is succinate monocarboxylate transporter retina.

Succinate is exported by the retina and imported by eyecup tissue. The transporters mediating this process have not yet been identified. Recent studies showed that monocarboxylate transporter 1 (MCT1) can transport succinate across plasma membranes in cardiac and skeletal muscle. Retina and retinal pigment epithelium (RPE) both express multiple MCT isoforms including MCT1. We tested the hypothesis that MCTs facilitate retinal succinate export and RPE succinate import. We assessed retinal succinate export and eyecup succinate import in short-term ex vivo culture using gas chromatog.-mass spectrometry. We tested the dependence of succinate export and import on pH, proton ionophores, conventional MCT substrates, and the MCT inhibitors AZD3965, AR-C155858, and diclofenac. Succinate exits retinal tissue through MCT1 but does not enter the RPE through MCT1 or any other MCT. Intracellular succinate levels are a contributing factor that determines if an MCT1-expressing tissue will export succinate. MCT1 facilitates export of succinate from retinas. An unidentified, non-MCT transporter facilitates import of succinate into RPE.

Investigative Ophthalmology & Visual Science published new progress about Animal tissue. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Reference of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Vessally, Esmail; Mohammadi, Somayeh; Abdoli, Morteza; Hosseinian, Akram; Ojaghloo, Parisa published the artcile< Convenient and robust metal-free synthesis of benzazole-2-ones through the reaction of aniline derivatives and sodium cyanate in aqueous medium>, COA of Formula: C19H34O2, the main research area is benzazolone preparation green chem; aryl amine sodium cyanate heterocyclization.

Green synthesis of benzazole-2-ones I (R = H, 6-Me, 6-Cl, 6-F, 4-Me; X = NH, O, S) by the reaction of aniline derivatives 3-R1-4-R2-2-XC6H2NH2 (R1 = H, Me; R2 = H, Me, Cl, F) with inexpensive and easily accessible sodium cyanate has been reported. Good to excellent yields of products have been obtained under catalyst- and ligand-free conditions in water as solvent. This procedure avoids the use of time-consuming and tedious column chromatog. and the products were easily isolated by simple extraction followed by washing with dichloromethane.

Iranian Journal of Chemistry & Chemical Engineering published new progress about Anilines Role: RCT (Reactant), RACT (Reactant or Reagent). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, COA of Formula: C19H34O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Zhang, Gang; Presly, Oliver; White, Fraser; Oppel, Iris M.; Mastalerz, Michael published the artcile< A Shape-Persistent Quadruply Interlocked Giant Cage Catenane with Two Distinct Pores in the Solid State>, HPLC of Formula: 112-63-0, the main research area is persistent quadruply interlocked giant cage catenane pore solid crystallog; boronic acids; catenanes; dynamic covalent chemistry; porosity; triptycene.

Discrete interlocked three-dimensional structures are synthetic targets that are sometimes difficult to obtain with classical synthetic approaches, and dynamic covalent chem. is a useful method to form such interlocked structures as thermodynamically stable products. Although interlocked and defined hollow structures are found, for example, in some viruses, similar structures have rarely been synthesized on a mol. level. Shape-persistent interlocked organic cage compounds with dimensions in the nanometer regime are now accessible in high yields during crystallization through the formation of 96 covalent bonds. The interlocked mols. form an unprecedented porous material with intrinsic and extrinsic pores both in the micropore and mesopore regime.

Angewandte Chemie, International Edition published new progress about Cage compounds Role: NAN (Nanomaterial), PRP (Properties), SPN (Synthetic Preparation), PREP (Preparation). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, HPLC of Formula: 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Li, Yaqi; Zuo, Pengjian; Li, Ruinan; Huo, Hua; Ma, Yulin; Du, Chunyu; Gao, YunZhi; Yin, Geping; Weatherup, Robert S. published the artcile< Formation of an Artificial Mg2+-Permeable Interphase on Mg Anodes Compatible with Ether and Carbonate Electrolytes>, Quality Control of 112-63-0, the main research area is magnesium ion battery anode ether carbonate electrolyte; TFSI− containing electrolyte; X-ray photoelectron spectroscopy (XPS); artificial SEI layer; carbonate electrolyte; ether electrolyte; magnesium batteries; near-edge X-ray absorption fine structure (NEXAFS); passivation layer.

Rechargeable Mg-ion batteries typically suffer from either rapid passivation of the Mg anode or severe corrosion of the current collectors by halogens within the electrolyte, limiting their practical implementation. Here, we demonstrate the broadly applicable strategy of forming an artificial solid electrolyte interphase (a-SEI) layer on Mg to address these challenges. The a-SEI layer is formed by simply soaking Mg foil in a tetraethylene glycol di-Me ether solution containing LiTFSI and AlCl3, with Fourier transform IR and UV-visible spectroscopy measurements revealing spontaneous reaction with the Mg foil. The a-SEI is found to mitigate Mg passivation in Mg(TFSI)2/DME electrolytes with sym. cells exhibiting overpotentials that are 2 V lower compared to when the a-SEI is not present. This approach is extended to Mg(ClO4)2/DME and Mg(TFSI)2/PC electrolytes to achieve reversible Mg plating and stripping, which is not achieved with bare electrodes. The interfacial resistance of the cells with a-SEI protected Mg is found to be two orders of magnitude lower than that with bare Mg in all three of the electrolytes, indicating the formation of an effective Mg-ion transporting interfacial structure. X-ray absorption and photoemission spectroscopy measurements show that the a-SEI contains minimal MgCO3, MgO, Mg(OH)2, and TFSI-, while being rich in MgCl2, MgF2, and MgS, when compared to the passivation layer formed on bare Mg in Mg(TFSI)2/DME.

ACS Applied Materials & Interfaces published new progress about Battery anodes. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Quality Control of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Wang, Tong; Guo, Qing; Yang, Hua; Gao, Wen; Li, Ping published the artcile< pH-controlled reversible deep-eutectic solvent based enzyme system for simultaneous extraction and in-situ separation of isoflavones from Pueraria lobata>, Formula: C19H34O2, the main research area is Pueraria deep eutectic solvent extraction isoflavones.

In this study, we developed an efficient and green pH-controlled reversible deep-eutectic solvents (DESs) based enzyme system for efficient extraction, transformation and in-situ separation of natural products from herbs. As a case study, seven isoflavones in the root of Pueraria lobata were selected as target compounds A series of DESs were firstly prepared and the extraction efficiency for target compounds with or without cellulase catalysis was investigated. We found that [N4444][Cl]:ethylene glycol (1:2) with cellulase addition show the highest extraction efficiency for isoflavones. More importantly, the phase behavior of [N4444][Cl]:ethylene glycol (1:2) based cellulase system was found to be pH-controlled. When pH is 5.0, the system is a homogeneous single-phase system, which is conducive to the extraction of natural products. When pH is 6.4, the system changes from the single-phase to the heterogeneous two-phase, to realize the in-situ separation of the compounds Therefore, by adjusting the pH of the system, the in-situ separation of isoflavones was successfully realized with high recovery yields. The pH-controlled DESs based enzyme-assisted extraction system overcomes the incompatibility between enzyme catalysis and conventional organic solvent in extraction, which could efficiently extract seven isoflavones from Pueraria lobata root.

Separation and Purification Technology published new progress about Deep eutectic solvents. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Formula: C19H34O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Hazmi, Balkis; Rashid, Umer; Kawi, Sibudjing; Mokhtar, Wan Nur Aini Wan; Ahangar, Firdous Ahmad; Yaw, Thomas Choong Shean; Tsubota, Toshiki; Alharthi, Fahad A.; Ngamcharussrivichai, Chawalit published the artcile< A Heterogeneous Bifunctional Carbon Nanocatalyst from Plastic Waste to Efficiently Catalyze Waste Cooking Oil into Biodiesel>, COA of Formula: C19H34O2, the main research area is bifunctional carbon nanocatalyst plastic waste catalyze cooking oil biodiesel.

In this study, black carbon derived from polyethylene terephthalate (PET) wastes was utilized as the precursor for heterogeneous bifunctional nanocatalyst, which successively catalyzed waste cooking oil into biodiesel. The nano-sized catalysts were prepared by impregnation method with different heat treatment techniques, such as reflux, hydrothermal, and microwave solvothermal, to provide good distribution of K2O and NiO particles on PET activated carbon mesoporous surface. The sample treated with microwave solvothermal technique (MAC-K2O-NiO) exhibited a high surface area of 120 m2/g with good dispersion of nanoparticles, as shown by FESEM image, large crystallite size of 62.2 nm, and consisted of a highest d. of basicity (2.58 mmol/g) and acidity (1.79 mmol/g) for improving transesterification to a maximum yield. The catalytic transesterification of MAC-K2O-NiO was optimized with 3 weight% of catalyst loading, 18: 1 methanol-oil molar ratio, 65 °C for 3 h of reaction, with a maximum yield of 97.2%. The catalyst reusability was performed, and it was found to maintain the catalytic activity up to six reaction cycles, with a yield of 72.9%. The physiochem. quality of the optimized biodiesel was examined in accordance with the American Society for Testing and Materials, ASTM D6751 testing method.

Catalysts published new progress about Acidity. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, COA of Formula: C19H34O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Bur, Daniel; Luyten, Marcel A.; Wynn, Hla; Provencher, Louis R.; Jones, J. Bryan; Gold, Marvin; Friesen, James D.; Clarke, Anthony R.; Holbrook, J. John published the artcile< Enzymes in organic synthesis. 45. An evaluation of the substrate specificity and asymmetric synthesis potential of the cloned L-lactate dehydrogenase from Bacillus stearothermophilus>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is lactate dehydrogenase synthesis; keto acid enzymic reduction; hydroxy acid preparation enzymic.

The potential utility of the L-lactate dehydrogenase of B. stearothermophilus (BSLDH) for stereospecific, preparative-scale reductions of α-keto acids to (S)-α-hydroxy acids of >99% enantiomeric excess has been demonstrated. BSLDH is a stable, thermophilic, enzyme whose gene has been cloned into a high-expression vector to assure its plentiful supply. Its specificity for keto acid substrates possessing straight- and branched-chain alkyl, cyclopropyl, or Ph groups has been evaluated in preparative and kinetic terms, and compared with that of the mammalian pig heart enzyme (PHLDH). The specificities of BSLDH and PHLDH are similar, with branched alkyl-chain keto acids being poor substrates for both enzymes.

Canadian Journal of Chemistry published new progress about Enzyme kinetics. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics