Category: ethers-buliding-blocks

Qi, Li; Liu, Jian; Ronk, Michael; Gallegos, Alejandra; Fujimori, Kiyoshi; Luo, Yanxin; Li, Kim; Lee, Hans; Nashed-Samuel, Yasser published the artcile< A Holistic Approach of Extractables and Leachables Assessment of Rubber Stoppered Glass Vial Systems for Biotechnology Products>, Recommanded Product: 2,2′-(Tridecylazanediyl)diethanol, the main research area is rubber stoppered glass vial extractable leachable biotechnol; Extractables; Glass vials; Holistic approach; ICH Q3D; Leachables; Rubber stoppers; Toxicology.

Rubber stoppered glass vial systems are widely used as primary containers for storing and delivering therapeutic protein products to patients. Addressing concerns and regulatory expectations related to the risk to biol. drug product quality and patient safety from rubber stoppered glass vial systems requires implementation of an extractable and leachable evaluation program based on material understanding, risk assessment, literature review, and a comprehensive scientifically sound anal. testing methodol. The extractable and leachable study design consisted of twelve drug products filled in twelve different size glass vials capped with laminated and nonlaminated rubber stoppers made from three different rubber formulations. Design of the model solvents was successful as they had little to no anal. interference and mimicked the formulation conditions and generated representative extractables capable of predicting leachables. The extraction conditions of time and temperature were appropriate as not to degrade the test materials or the extractable compounds, and yet generated significant quantities for identification of the extractable compounds with confidence. The extractables testing results were capable of predicting the leachable profiles of the twelve drug products. In each case, the leachable profile was a subset of the extractable profile. The organic and elemental impurities of the leachable profiles of drug products were the end-to-end verification of the quality of the glass vials, rubber stoppers and drug product lifecycles. Overall, the holistic approach was fully successful in the qualification of different vial systems as primary containers and delivery systems for different biotherapeutic products to ensure product quality and patient safety.

Journal of Pharmaceutical Sciences (Philadelphia, PA, United States) published new progress about Bioavailability. 18312-57-7 belongs to class ethers-buliding-blocks, and the molecular formula is C17H37NO2, Recommanded Product: 2,2′-(Tridecylazanediyl)diethanol.

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

Huang, Shuang; Hong, Xi; Cui, He-Zhen; Zhou, Quan; Lin, Yue-Jian; Hou, Xiu-Feng published the artcile< N-Methylation of ortho-substituted aromatic amines with methanol catalyzed by 2-arylbenzo[d]oxazole NHC-Ir(III) complexes>, Related Products of 10541-78-3, the main research area is arylamine methanol arylbenzoxazole iridium complex catalyst methylation green chem; methyl arylamine preparation.

Seven new chelated cyclometalated Ir complexes of ABON,P, ABON,O and ABON,C(carbene) based on a rigid and tunable 2-arylbenzo[d]oxazole backbone were prepared for the N-methylation of amines. Among these three coordinated modes, ABON,C(carbene)-chelated iridium-based catalysts exhibited good performance in the monomethylation of aromatic amines with methanol (MeOH) as the green methylation reagent. The steric-modified synthesis of ABON,C(carbene) complexes was described. The most active ABON,C(carbene) complex with marginal steric hindrance as a catalyst was obtained from the benzoxazole ring without a substituent and Me group of the benzimidazole ring on the N-heterocyclic carbene (NHC) ligand. A variety of amines including para- and meta-substituted aromatic amines, as well as heterocyclic amines, were formulated as suitable substrates. Importantly, this catalyst considerably promoted the yield of the N-methylation of ortho-substituted aromatic amines. Controlled kinetic experiments and deuterium-labeling reactions of these ortho-substituted amines were conducted under optimized conditions. On the basis of the exptl. results, a plausible mechanism was proposed.

Dalton Transactions published new progress about Benzoxazoles Role: CAT (Catalyst Use), PRP (Properties), RCT (Reactant), SPN (Synthetic Preparation), USES (Uses), RACT (Reactant or Reagent), PREP (Preparation). 10541-78-3 belongs to class ethers-buliding-blocks, and the molecular formula is C8H11NO, Related Products of 10541-78-3.

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

Harwood, Laurence M.; Robertson, Jeremy published the artcile< Preparation of cyclic ethers via oxidative cyclization of 2-(4-hydroxyalkyl)- and 2-(5-hydroxyalkyl)furans with DDQ>, Application In Synthesis of 52244-70-9, the main research area is hydroxyalkylfuran oxidative cyclization; ether cyclic; furyltetrahydrofuran.

Reaction of hydroxyalkylfurans I [n = 2, R = H, R1 = H, C(:CH2)COMe, 5-methyl-2-furyl; n = 2, RR1 = O; n = 3, R = H, R1 = 5-methyl-2-furyl] with DDQ gave cyclic ethers II under neutral conditions. Aromatic analogs do not give useful yields of desired products.

Tetrahedron Letters published new progress about Cyclic ethers Role: SPN (Synthetic Preparation), PREP (Preparation). 52244-70-9 belongs to class ethers-buliding-blocks, and the molecular formula is C11H16O2, Application In Synthesis of 52244-70-9.

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

Dickschat, Jeroen S.; Wang, Tao; Stadler, Marc published the artcile< Volatiles from the xylarialean fungus Hypoxylon invadens>, Electric Literature of 56724-03-9, the main research area is Hypoxylon fungal volatile natural product constitutional isomer; constitutional isomerism; gas chromatography; mass spectrometry; natural products; volatiles.

The volatiles emitted by agar plate cultures of the xylarialean fungus Hypoxylon invadens were investigated by use of a closed loop stripping apparatus in combination with GC-MS. Several aromatic compounds were found that could only be identified by comparison to all possible constitutional isomers with different ring substitution patterns. For the set of identified compounds a plausible biosynthetic scheme was suggested that gives further support for the assigned structures.

Beilstein Journal of Organic Chemistry published new progress about Aromatic compounds Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 56724-03-9 belongs to class ethers-buliding-blocks, and the molecular formula is C9H10O2, Electric Literature of 56724-03-9.

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

Shang, Gao; Liu, Duan; Allen, Scott E.; Yang, Qin; Zhang, Xumu published the artcile< Asymmetric hydrogenation of α-primary and secondary amino ketones: efficient asymmetric syntheses of (-)-arbutamine and (-)-denopamine>, Product Details of C11H16O2, the main research area is asym hydrogenation amino ketone rhodium catalyst; alc amino chiral preparation rhodium catalyst.

Two β-receptor agonists (-)-denopamine (I) and (-)-arbutamine (II) were prepared in good yields and enantioselectivities by asym. hydrogenation of unprotected amino ketones for the first time by using Rh catalysts bearing electron-donating phosphine ligands. A series of α-primary and secondary amino ketones, e.g. ArCOCH2NHR (Ar = Ph, 2-MeOC6H4, 2-naphthyl, R = Me; Ar = Ph, R = Et), were synthesized and hydrogenated to produce various 1,2-amino alcs., e.g. ArCH(OH)CH2NHR, in good yields and with good enantioselectivities. This Rh electron-donating phosphine-catalyzed asym. hydrogenation rep- resents one of the most promising and convenient approaches towards the asym. synthesis of chiral amino alcs.

Chemistry – A European Journal published new progress about Amines, keto Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 52244-70-9 belongs to class ethers-buliding-blocks, and the molecular formula is C11H16O2, Product Details of C11H16O2.

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

Beke, Ferenc; Meszaros, Adam; Toth, Agnes; Botlik, Bence Bela; Novak, Zoltan published the artcile< Vicinal difunctionalization of carbon-carbon double bond for the platform synthesis of trifluoroalkyl amines>, Application In Synthesis of 10541-78-3, the main research area is trifluoroalkyl amine preparation regioselective; amine trifluoroalkenyl iodonium salt three component diamination.

Herein, the controllable double nucleophilic functionalization of an activated alkene synthon I, originated from a trifluoropropenyliodonium salt with two distinct nucleophiles, enables the selective synthesis of trifluoromethylated ethylene amines and diamines RCH(CF3)CH2R1 (R = methyl(naphthalen-1-ylmethyl)aminyl, methyl(prop-2-yn-1-yl)aminyl, 3-azabicyclo[3.2.2]nonan-3-yl, etc.; R1 = {1-[(tert-butoxy)carbonyl]azetidin-3-yl}(2-phenylethyl)aminyl, 2-sulfanylidene-1,2-dihydropyridin-1-yl, etc.) on broad scale with high efficiency under mild reaction conditions. Considering the chem. nature of the reactants, this synthetic approach brings forth an efficient methodol. and provides versatile access to highly fluorinated amines.

Nature Communications published new progress about Amination, regioselective. 10541-78-3 belongs to class ethers-buliding-blocks, and the molecular formula is C8H11NO, Application In Synthesis of 10541-78-3.

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

Jeon, Heechol; Jo, Nam Hyun; Yoo, Kyung Ho; Choi, Joung-Hoon; Cho, Heeyeong; Cho, Jung-Hyuck; Oh, Chang-Hyun published the artcile< Synthesis and antibacterial evaluation of 1β-methyl-2-[5-(1-methoxyimino-2-substituted sulfonamide ethyl)pyrrolidin-3-ylthio]carbapenems and their related compounds>, Computed Properties of 10305-42-7, the main research area is carbapenem sulfonamide pyrrolidinyl preparation antibacterial structure activity relationship.

The synthesis of a new series of 1β-methylcarbapenems, I (R = SO2Me, SO2Et, SO2NHEt, SO2NMe2, SO2NH-n-Pr, COMe, H, CONH2) having methoxyimine and substituted sulfonamide moieties is described. Their in vitro antibacterial activities against both Gram-pos. and Gram-neg. bacteria were tested and the effect of substituents on the pyrrolidine ring was investigated. A particular compound I (R = SO2NHMe) having (methylamino)sulfonamide moiety showed the most potent antibacterial activity.

European Journal of Medicinal Chemistry published new progress about Antibacterial agents. 10305-42-7 belongs to class ethers-buliding-blocks, and the molecular formula is C3H8ClNO2S, Computed Properties of 10305-42-7.

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

Chen, Hui; Niu, Zhihui; Ye, Jing; Zhang, Changkun; Zhang, Xiaohong; Zhao, Yu published the artcile< Multicore Ferrocene Derivative as a Highly Soluble Cathode Material for Nonaqueous Redox Flow Batteries>, Application In Synthesis of 6482-24-2, the main research area is redox flow battery ferrocene derivative cathode.

Nonaqueous redox flow batteries (NARFBs) are considered promising electrochem. energy storage systems to overcome the limited electrochem. window of aqueous counterparts. However, the limited solubility of redox-active materials in the nonaqueous phase, for instance, the intensively investigated ferrocene derivatives, needs to be addressed prior to their practical implementation. In this study, we demonstrate the design and synthesis of a multicore ferrocene derivative, 4,4-diferrocenyl-1-(2-methoxy-ethoxy)-pentane (DFDE), as a highly soluble cathode-active material for NARFBs. Owing to the tailored ether chain as well as the synergistic effect of multiple ferrocene cores, DFDE exhibits a high solubility of 4.5 M equivalent electron concentration in an ether-based solvent as well as a more pos. redox potential compared with pristine ferrocene, which are essential to improve the energy d. of NARFBs. Moreover, electrochem. characterizations reveal that DFDE undergoes highly reversible redox reactions with a fast electron-transfer rate constant When paired with N-butyl-phthalimide (BuPh), the cell exhibits a discharge voltage of ca. 1.8 V and stable cycling performance. The use of multicore ferrocene derivatives might represent an effective yet to be explored strategy to overcome the solubility limit of ferrocene-based cathode materials at affordable environmental and ecol. load.

ACS Applied Energy Materials published new progress about Battery cathodes. 6482-24-2 belongs to class ethers-buliding-blocks, and the molecular formula is C3H7BrO, Application In Synthesis of 6482-24-2.

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

Plamondon, Samuel J.; Warnica, Josephine M.; Kaldre, Dainis; Gleason, James L. published the artcile< Hydrazide-Catalyzed Polyene Cyclization: Asymmetric Organocatalytic Synthesis of cis-Decalins>, Product Details of C9H10O2, the main research area is hydrazide polyene enantioselective diastereoselective cyclization catalyst; decalin stereoselective preparation; asymmetric catalysis; cis-decalin; hydrazide; organocatalysis; polyene cyclization.

Polyene cyclizations offer rapid entry into terpenoid ring systems. Although enantioselective cyclizations of (E)-polyenes to form trans-decalin ring systems are well precedented, highly enantioselective cyclizations of (Z)-polyenes to form the corresponding cis-decalins have not been reported. Here, we describe the first application of iminium catalysis to the initiation of polyene cyclizations. Et 1,2-diazepane-1-carboxylate catalyzes the cyclization of polyenes bearing enal initiators. Moreover, chiral bicyclic hydrazides catalyze the cyclizations of (Z)-polyene substrates to form cis-decalins with enantioselectivities of up to 97:3 er. DFT calculations suggest the catalysts promote the reaction by stabilizing pos. charge as it develops during the bicyclization.

Angewandte Chemie, International Edition published new progress about Bicyclization. 56724-03-9 belongs to class ethers-buliding-blocks, and the molecular formula is C9H10O2, Product Details of C9H10O2.

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

Li, Kangkang; Li, Jin-Feng; Yin, Bing; Zeng, Fanlong published the artcile< Investigation of NNN Pincer Ruthenium(II) Complexes with a Pendant Hydroxyl Group for N-Monomethylation of amines and Nitroarenes by Methanol>, Application In Synthesis of 10541-78-3, the main research area is hydroxy trinitrogen NNN pincer ruthenium preparation crystal mol structure; monomethylation amine nitroarene methanol hydroxy trinitrogen pincer ruthenium catalyzed.

A family of air- and moisture-stable NNN pincer ruthenium(II) complexes with a pendant OH were developed, which exhibit unprecedented high reactivity and selectivity in N-monomethylation of amines and nitroarenes using methanol. The study reveals adopting the combination of 1H-pyrazole-1-yl and 3,5-dimethyl-4-hydroxyethyl-1H-pyrazol-1-yl as the two assistant arms of the pyridyl-backbone is a suitable choice. The mechanism study discloses that, during the catalytic cycle, dehydrogenation of methanol to form formaldehyde is a fast and reversible step.

ChemCatChem published new progress about Amines Role: RCT (Reactant), RACT (Reactant or Reagent). 10541-78-3 belongs to class ethers-buliding-blocks, and the molecular formula is C8H11NO, Application In Synthesis of 10541-78-3.

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