Month: November 2022

Xiao, Yushan published the artcileSynthesis of SCF3-Substituted Sulfonium Ylides from Sulfonium Salts or α-Bromoacetic Esters, Safety of 2,5,8,11-Tetraoxatridecan-13-ol, the main research area is acyltetrahydrothiophenium bromide trifluoromethylthiophthalimide trifluoromethylthiolation; bromoacetate tetrahydrothiophene trifluoromethylthiophthalimide trifluoromethylthiolation; tetrahydrothiophenylidene trifluoromethylthioethanone preparation.

A metal-free direct trifluoromethylthiolation of sulfonium ylides with an electrophilic trifluoromethylthiolating reagent was established, in which sulfonium salt or α-bromoacetic ester was employed as sulfonium ylide precursors. This trifluoromethylthiolation enabled the straightforward construction of SCF3-substituted sulfonium ylides from a wide range of substrates, including ketones, esters, and even PEGylated substrates. Moreover, the application of this approach in large-scale preparation and the fluorescence and fluorine-19 magnetic resonance imaging capabilities of the product were also explored.

Advanced Synthesis & Catalysis published new progress about Acetates Role: RCT (Reactant), RACT (Reactant or Reagent) (bromo-). 23783-42-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11-Tetraoxatridecan-13-ol, and the molecular formula is C9H20O5, Safety of 2,5,8,11-Tetraoxatridecan-13-ol.

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

Gao, Peng-Cheng published the artcileOxidative phenol-arene and phenol-phenol cross-coupling using periodic acid, Application of 4-Hydroxy-3-tert-butylanisole, the main research area is biaryl preparation; arene phenol oxidative cross coupling reaction; phenol oxidative cross coupling reaction; naphthol phenol oxidative cross coupling reaction.

A simple, metal-free protocol for unsym. biaryl coupling using H5IO6 is reported. H5IO6 was evaluated for a novel application in the oxidative cross-coupling of phenol-arene, phenol-phenol, and phenol-naphthol compounds ROH (R = 2,6-dimethoxyphenyl, 2-naphthyl, 5,6,7,8-tetrahydronaphthalen-2-yl, etc.) and R1H (R1 = 2,4,5-trimethoxyphenyl, 2-methoxynaphth-1-yl, N,N-dibenzyl-4-aminophenyl, etc.). In this work, most of the couplings were completed within 30 min at ambient temperature 30 coupling products, e.g., 4-(2-(dimethylamino)naphthalen-1-yl)-2,6-dimethylphenol were conveniently obtained using only 0.5 equiv of H5IO6 in HFIP. A mechanism by which the transformation occurs is proposed.

Tetrahedron published new progress about Aromatic compounds Role: RCT (Reactant), RACT (Reactant or Reagent). 121-00-6 belongs to class ethers-buliding-blocks, name is 4-Hydroxy-3-tert-butylanisole, and the molecular formula is C11H16O2, Application of 4-Hydroxy-3-tert-butylanisole.

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

Tamura, Masazumi published the artcileEfficient and Substrate-Specific Hydration of Nitriles to Amides in Water by Using a CeO2 Catalyst, Application In Synthesis of 16332-06-2, the main research area is amide preparation nitrile hydration cerium dioxide catalyst water solvent.

Cerium dioxide (CeO2) is an effective heterogeneous catalyst for the hydration of nitriles that have a heteroatom (N or O) adjacent to the α carbon of the CN group. The substrate specificity is derived from an enormous difference of frequency factor. For the hydration of pyrazinecarbonitrile to pyrazinecarboxamide in water, CeO2 shows higher activity than the state-of-the-art catalysts including enzymes. A Michaelis-Menten-type mechanism is proposed, which involves (1) H2O dissociation on CeO2, (2) adsorption of the nitrile on CeO2, and (3) nucleophilic attack of a hydroxyl species to the adsorbed nitrile.

Chemistry – A European Journal published new progress about Aliphatic nitriles Role: RCT (Reactant), RACT (Reactant or Reagent). 16332-06-2 belongs to class ethers-buliding-blocks, name is 2-Methoxyacetamide, and the molecular formula is C3H7NO2, Application In Synthesis of 16332-06-2.

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

Zheng, Dagui published the artcileNMP-mediated chlorination of aliphatic alcohols with aryl sulfonyl chloride for the synthesis of alkyl chlorides, Name: (2-Chloroethoxy)benzene, the main research area is aliphatic alc arylsulfonyl chloride NMP chlorination; alkyl chloride preparation.

NMP-mediated chlorination of aliphatic alcs. has been developed for the synthesis of alkyl chlorides. This facile, efficient and practical approach used simple and readily available aryl sulfonyl chlorides as the chlorination reagent for the construction of C-Cl bond in good to excellent yields with mild conditions and broad substrate scope.

Synthetic Communications published new progress about Aliphatic alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 622-86-6 belongs to class ethers-buliding-blocks, name is (2-Chloroethoxy)benzene, and the molecular formula is C8H9ClO, Name: (2-Chloroethoxy)benzene.

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

Yoo, Kihyun published the artcileEnantioselective synthesis of (R)-tolterodine via CuH-catalyzed asymmetric conjugate reduction, Application of 2-Methoxy-5-methylphenylboronic acid, the main research area is tolterodine asym preparation; diarylacrylonitrile stereoselective preparation conjugate reduction copper reductive amination.

An efficient and highly enantioselective method for the preparation of (R)-tolterodine (I) is described. The synthesis was performed by CuH-catalyzed asym. conjugate reduction of a β,β-diaryl-substituted unsaturated nitrile as a key step, which is prepared by a stereoselective hydroarylation of alkynenitrile with aryl boronic acid. The synthesis was accomplished without employing the protection-deprotection sequence.

Journal of Organic Chemistry published new progress about Boronic acids Role: RCT (Reactant), RACT (Reactant or Reagent) (aryl). 127972-00-3 belongs to class ethers-buliding-blocks, name is 2-Methoxy-5-methylphenylboronic acid, and the molecular formula is C8H11BO3, Application of 2-Methoxy-5-methylphenylboronic acid.

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

Cerezo, Vanessa published the artcileSolid-phase synthesis of 5-arylhistidines via a microwave-assisted Suzuki-Miyaura cross-coupling, Synthetic Route of 127972-00-3, the main research area is arylhistidine peptide solid phase synthesis; bromohistidine arylboronic acid Suzuki Miyaura reaction solid phase microwave.

Microwave irradiation efficiently promoted the solid-phase Suzuki-Miyaura reaction of a 5-bromohistidine with various arylboronic acids in the presence of a palladium catalyst. This methodol. allowed the synthesis of peptides bearing a histidine residue substituted at position 5 of the imidazole ring with a Ph, a substituted Ph, a pyridyl, or a thienyl ring, as well as with the benzene ring of a tyrosine residue.

Tetrahedron published new progress about Boronic acids Role: RCT (Reactant), RACT (Reactant or Reagent) (aryl). 127972-00-3 belongs to class ethers-buliding-blocks, name is 2-Methoxy-5-methylphenylboronic acid, and the molecular formula is C8H11BO3, Synthetic Route of 127972-00-3.

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

Iu, Leo published the artcileHigh iso Aldehyde Selectivity in the Hydroformylation of Short-Chain Alkenes, Product Details of C11H16O2, the main research area is iso aldehyde selectivity hydroformylation alkene rhodium phospholane phosphite catalyst; enantioselective catalysis; fluorinated solvents; hydroformylation; phosphorus ligands; rhodium.

The hydroformylation of propene to give predominantly iso-butanal was achieved; class-leading selectivity is possible even at higher temperatures that deliver fast conversion. Racemic Rh complexes of bidentate phospholane phosphites derived from tropos-biphenols and unusual solvent systems are the key to the selectivity observed

Angewandte Chemie, International Edition published new progress about Aldehydes Role: SPN (Synthetic Preparation), PREP (Preparation) (iso). 121-00-6 belongs to class ethers-buliding-blocks, name is 4-Hydroxy-3-tert-butylanisole, and the molecular formula is C11H16O2, Product Details of C11H16O2.

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

Wang, Zijing published the artcileSonogashira reactions of alkyl halides catalyzed by NHC [CNN] pincer nickel(II) complexes, Safety of (2-Chloroethoxy)benzene, the main research area is nickel CNN pincer NHC carbene complex preparation Sonogashira catalyst; Sonogashira coupling catalyst nickel carbene pincer complex preparation; crystal structure nickel CNN pincer imidazolylidene carbene complex; mol structure nickel CNN pincer imidazolylidene carbene complex.

CNN-Pincer carbene nickel complexes I (6-8; R = iPr, Bu, PhCH2; X = Cl Br) were prepared and evaluated as catalysts for Sonogashira coupling of alkyl halides. The catalytic performance of complexes 6-8 for Sonogashira cross-coupling reactions was explored. In a combination of 5 mol% catalyst loading of 6 and CuI/Cs2CO3/NaI/DMSO at different temperatures for the coupling reactions between alkyl iodides, bromides, chlorides and terminal alkynes, the corresponding coupling products were obtained in moderate to excellent yields. The mechanism of these catalytic reactions was discussed and partially supported by experiments The phenylethynyl CNN pincer nickel complex 9 as a catalytically active complex was isolated and structurally characterized using X-ray diffraction.

New Journal of Chemistry published new progress about Alkynes, internal Role: SPN (Synthetic Preparation), PREP (Preparation). 622-86-6 belongs to class ethers-buliding-blocks, name is (2-Chloroethoxy)benzene, and the molecular formula is C8H9ClO, Safety of (2-Chloroethoxy)benzene.

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

Konishi, Hiroaki published the artcileInfluence of Electrolyte Composition on the Electrochemical Reaction Mechanism of Bismuth Fluoride Electrode in Fluoride Shuttle Battery, Product Details of C10H22O5, the main research area is fluoride shuttle battery bismuth fluoride electrode electrolyte composition.

Fluoride shuttle battery (FSB) is a promising next-generation battery candidate. In the FSB, metal fluoride and organic solvent containing supporting electrolyte salt and anion acceptor were used as active material and electrolyte. In this study, using bis[2-(2-methoxyethoxy)ethyl] ether (tetraglyme: G4) containing cesium fluoride (CsF; 0.45 mol dm-3 or saturated) and triphenylboroxine (TPhBX; 0.50 mol dm-3) as electrolyte (CsF(0.45)-TPhBX(0.50)-G4 and CsF(saturate)-TPhBX(0.50)-G4), the electrochem. performance of bismuth fluoride (BiF3) was assessed. Although the discharge and charge reactions of BiF3 electrode proceeded in both electrolytes, the cycling performance of BiF3 electrode in CsF(0.45)-TPhBX(0.50)-G4 was poorer than that in CsF(saturate)-TPhBX(0.50)-G4. The cause of differences in the electrochem. properties was investigated using at. absorption spectrometry (AAS), XPS, and cross-sectional SEM (SEM)/energy dispersive X-ray spectroscopy (EDX). The AAS results indicate that the poor cycling performance with CsF(0.45)-TPhBX(0.50)-G4 was due to the dissolution of active material during charging. The XPS and cross-sectional SEM/EDX results indicate that the formation state of Bi, and the progress of electrolyte decomposition during discharging were affected by the CsF/TPhBX ratio in the electrolyte.

Journal of Physical Chemistry C published new progress about Carbon black Role: TEM (Technical or Engineered Material Use), USES (Uses). 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Product Details of C10H22O5.

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

Wang, Gulian published the artcileOrganic polymeric filler-amorphized poly(ethylene oxide) electrolyte enables all-solid-state lithium-metal batteries operating at 35°C, Safety of 2,5,8,11,14-Pentaoxapentadecane, the main research area is lithium sulfur battery polymer gel electrolyte PEO.

The poor ionic conductivity and high working temperatures (normally >60°C) of poly (ethylene oxide) (PEO)-based solid polymer electrolytes (SPEs) greatly limit their application in all-solid-state batteries. To mitigate these issues, for the first time, we report here an organic polymer filler, hydrolyzed polymaleic anhydride (HPMA), that can greatly suppress PEO crystallinity, enhance the ionic conductivity of PEO-based SPEs (1.13 x 10-4 S cm-1 at 35°C) and support battery operation at 35°C. PEO-HPMA SPEs feature high flexibility, incombustibility, wide electrochem. operating window and stability against lithium. The as-derived Li/PEO-HPMA/LiFePO4 all-solid-state batteries show outstanding rate capability, high reversible capacity and long-term stability up to 1250 cycles. More impressively, the soft-packaged Li/PEO-HPMA/LiFePO4 cells show high safety under various extreme conditions such as cutting and perforation. The PEO-HPMA SPE-based quasi-solid-state lithium-sulfur batteries are also presented. This work demonstrates a facile approach that unlocks the low-temperature application of PEO SPE-based all-solid-state batteries.

Journal of Materials Chemistry A: Materials for Energy and Sustainability published new progress about Carbon black Role: TEM (Technical or Engineered Material Use), USES (Uses). 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Safety of 2,5,8,11,14-Pentaoxapentadecane.

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