Category: ethers-buliding-blocks

Liu, Jie; Xiang, Haonan; Jiang, Lvqi; Yi, Wenbin published the artcile< Chemoselective desulfurization-fluorination/bromination of carbonofluoridothioates for the O-trifluoromethylation and O-bromodifluoromethylation of alcohols>, Electric Literature of 52244-70-9, the main research area is carbonofluoridothioate preparation desulfurization fluorination bromination; bromodifluoromethyl ether alkyl preparation chemoselective; alkyl trifluoromethyl ether preparation chemoselective; alc trifluoromethylation.

Herein, a method for synthesizing various alkyl trifluoromethyl e.g., C6H5(CH2)5OCF3 and alkyl bromodifluoromethyl ethers e.g., C6H5(CH2)5OCF2Br using carbonofluoridothioates e.g., C6H5(CH2)5OC(S)F as precursors has been described. Carbonofluoridothioates were obtained upon the reaction of an alc. e.g., C6H5(CH2)5OH and S=CF2 generated via the decomposition of an SCF3 anion, and then selectively transformed into their corresponding trifluoromethyl and bromodifluoromethyl ethers upon changing the reaction conditions. This transformation has also been extended to the one-pot, two-step conversion of alcs. into alkyl trifluoromethyl ethers. A series of alkyl bromodifluoromethyl ethers has also been synthesized. These compounds open up a new avenue for the synthesis of a wide range of useful fluorinated products. In addition, this method is suitable for the late-stage introduction of trifluoromethyl ethers in complex small mols.

Science China: Chemistry published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 52244-70-9 belongs to class ethers-buliding-blocks, and the molecular formula is C11H16O2, Electric Literature of 52244-70-9.

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

Nahan, Keaton; Sussman, Eric M.; Oktem, Berk; Schultheis, Lester; Wickramasekara, Samanthi published the artcile< Screening for extractables in additive-manufactured acrylonitrile butadiene styrene orthopedic cast>, Related Products of 18312-57-7, the main research area is acrylonitrile butadiene styrene orthopedic cast extractable safety; 3D printing; Acrylonitrile butadiene styrene (ABS); Additive manufacturing; Chemical characterization; Extractables; Medical devices.

The use of additive-manufactured components in medical applications, specifically medical devices (e.g., orthopedic casts), has increased in recent years. Such devices may be fabricated at the point of care using consumer-grade additive manufacturing Limited studies have been conducted to evaluate the extractable substances of these devices. Chem. characterization followed by toxicol. risk assessment is one means of evaluating safety of devices. This study was designed to determine the extractables profile of additive-manufactured materials according to filament grade and post-processing method. Feedstocks for additive manufacturing were tested as filament and manufactured casts, while the cast from consumer-grade filament (CGF) was post-processed. Samples were extracted using three solvents of varying polarities. Extracts were analyzed by gas chromatog./mass spectrometry (GC/MS) and liquid chromatog./mass spectrometry (LC/MS) techniques. In GC/MS anal., isopropanol extracts generated fewer compound identifications for USP Class VI filament (USPF)-based casts (3) compared with the resp. filament (17) while hexane generated the most compound identifications for the finished cast manufactured from CGF. CGF was found to have the highest number of nonvolatile extractables for isopropanol (15) and hexane (34) by pos. ion LC/MS. Addnl., CGF produced more non-polar extractables in hexane than the USPF. A known polymer byproduct and potential genotoxicant, styrene acrylonitrile (SAN) trimer, was one of the compounds identified in both GC/MS and LC/MS at quantities ranging from 19 to 270μg g-1. Overall these results suggested that the extractables profile was affected by the filament material, printing procedure, and post-processing method.

Talanta published new progress about Additive manufacturing. 18312-57-7 belongs to class ethers-buliding-blocks, and the molecular formula is C17H37NO2, Related Products of 18312-57-7.

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

Jiang, Lei; Guo, Fang; Wang, Yinran; Jiang, Jialin; Duan, Yangzhi; Hou, Zhaomin published the artcile< Selective N-Monomethylation of Anilines with Methanol Catalyzed by Commercial Pd/C as an Efficient and Reusable Catalyst>, Application of C8H11NO, the main research area is monomethyl aniline preparation chemoselective; amine aryl methanol palladium catalyst chemoselective methylation.

In this paper, the N-monomethylation of aniline derivatives using Pd/C catalyst and methanol as the methylation reagent was investigated. The N-monomethylation of various aryl amines was achieved with high activity and selectivity under relatively mild reaction conditions, and the yield of N-monomethyl anilines ArNHMe [Ar = Ph, 4-pyridyl, 2-MeC6H4, etc.] was over 90 %. Notably, the com., readily available, and inexpensive heterogeneous catalyst, Pd/C, could be easily recovered and reused more than five times with only a slight decrease in activity; gram-scale experiments were also successfully performed.

Asian Journal of Organic Chemistry published new progress about Aromatic amines Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 10541-78-3 belongs to class ethers-buliding-blocks, and the molecular formula is C8H11NO, Application of C8H11NO.

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

Zhang, Liang; Kong, Xiangjin; Liu, Shuya; Zhao, Zhiguo; Yu, Qun; Wang, Wei; Wang, Yao published the artcile< Succinimide-Promoted Malonylamination of Alkenes with Amines and Iodonium Ylides via Trapping of Transient Aminium Radical Cations>, Synthetic Route of 10541-78-3, the main research area is succinimide promoted malonylamination alkene amine iodonium ylide.

A conceptually distinct strategy enabling malonylamination of alkenes with abundant amines and iodonium ylides without assistance of any transition metal was developed. Succinimide was identified as a proton shuttle that can not only largely accelerate the process of trapping highly unstable radical ion pairs with alkenes but also significantly improve the chem. yields.

Organic Letters published new progress about Addition reaction (carboamination). 10541-78-3 belongs to class ethers-buliding-blocks, and the molecular formula is C8H11NO, Synthetic Route of 10541-78-3.

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

Tian, Ya-Ming; Guo, Xiao-Ning; Krummenacher, Ivo; Wu, Zhu; Nitsch, Joern; Braunschweig, Holger; Radius, Udo; Marder, Todd B. published the artcile< Visible-Light-Induced Ni-Catalyzed Radical Borylation of Chloroarenes>, Product Details of C13H19BO3, the main research area is chloro nickel carbene preparation catalyzed radical borylation chloroarene; crystal structure imidazolylidene nickel chloride; mol structure imidazolylidene nickel chloride; arylborane preparation.

A highly selective and general photoinduced C-Cl borylation protocol that employs [Ni(IMes)2] (IMes = 1,3-dimesitylimidazoline-2-ylidene) for the radical borylation of chloroarenes is reported. This photoinduced system operates with visible light (400 nm) and achieves borylation of a wide range of chloroarenes with B2pin2 at room temperature in excellent yields and with high selectivity, thereby demonstrating its broad utility and functional group tolerance. Mechanistic studies suggest that the borylation reactions proceed via a radical process. EPR studies demonstrate that [Ni(IMes)2] undergoes very fast Cl atom abstraction from aryl chlorides to give [Ni(I)(IMes)2Cl] and aryl radicals. Control experiments indicate that light promotes the reaction of [Ni(I)(IMes)2Cl] with aryl chlorides generating addnl. aryl radicals and [Ni(II)(IMes)2Cl2]. The aryl radicals react with an anionic sp2-sp3 diborane [B2pin2(OMe)]- formed from B2pin2 and KOMe to yield the corresponding borylation product and the [Bpin(OMe)]•- radical anion, which reduces [Ni(II)(IMes)2Cl2] under irradiation to regenerate [Ni(I)(IMes)2Cl] and [Ni(IMes)2] for the next catalytic cycle.

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

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

Shalini, Sorout; Matzger, Adam J. published the artcile< Ethylene oxide functionalization enhances the ionic conductivity of a MOF>, Category: ethers-buliding-blocks, the main research area is ethylene oxide ionic conductivity functionalization.

Varying the degree of ethylene oxide (EO) functionalization of the zirconium MOF UiO-68 affords two novel MOFs; UiO-68-EO and UiO-68-2EO exhibit solvent-free ionic conductivity upon loading LiTFSI in their pores. Incorporating EO chains provides a pathway for lithium ion migration between the coordinated sites and results in an ionic conductivity of 3.8 x 10-7 S cm-1 and 3.9 x 10-4 S cm-1 at 90 °C for UiO-68-EO/LiTFSI and UiO-68-2EO/LiTFSI resp.

Chemical Communications (Cambridge, United Kingdom) published new progress about Differential scanning calorimetry. 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

Hansen, N. C. published the artcile< Monoalkylsulfamyl chlorides>, Electric Literature of 10305-42-7, the main research area is .

Normal C2-5 amine hydrochlorides were treated with excess SO2Cl2 18 hrs. on a water bath at 75°. In some cases more SO2Cl2 was added. The resulting oil was treated with dry ether, the precipitated amine hydrochloride filtered off, and the filtrate distilled in vacuo to give monoalkylsulfamyl chlorides, RNHSO2Cl (I). [RNH2.HCl (R given), amount added, and recovered (g.), volume (ml.) SO2Cl2 used, % yield of corresponding I (based on RNH2.HCl used) and b.p. (redistilled samples) given]: Et, 52, 23, 105 (a further 100 ml. was added after 4 hrs. reflux), 42, b0.05 52; Pr, 52, 26, 350, 13, b0.2 78°; Bu, 77, 27, 450, 39, b0.11 80°; and Am, 19, 12, 150, 8, b0.15 95°. When HCl salts of methyl-, hexyl-, cyclohexyl-, and octylamine were used, the yields of the corresponding I were too low to permit their isolation. That at least MeNHSO2Cl was formed could be concluded from the fact that MeNHSO2NHPr, m. 57-8° (ether-petr. ether), could be obtained when the impure product was treated with PrNH2. EtNHSO2NHBu, m. 73-5° (hexane), was similarly obtained from EtNHSO2Cl.

Acta Chemica Scandinavica published new progress about NMR (nuclear magnetic resonance). 10305-42-7 belongs to class ethers-buliding-blocks, and the molecular formula is C3H8ClNO2S, Electric Literature of 10305-42-7.

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

Poon, Kevin W. C.; Dudley, Gregory B. published the artcile< Mix-and-Heat Benzylation of Alcohols Using a Bench-Stable Pyridinium Salt>, Recommanded Product: 4-(4-Methoxyphenyl)-1-butanol, the main research area is alc benzylation pyridinium triflate; ether benzyl preparation.

2-Benzyloxy-1-methylpyridinium triflate (I) is a stable, neutral organic salt that converts alcs. into benzyl ethers upon warming. The synthesis and reactivity of I are described herein. Benzylation of a wide range of alcs. occurs in good to excellent yields.

Journal of Organic Chemistry published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 52244-70-9 belongs to class ethers-buliding-blocks, and the molecular formula is C11H16O2, Recommanded Product: 4-(4-Methoxyphenyl)-1-butanol.

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

Gao, Xinpei; Mariani, Alessandro; Jeong, Sangsik; Liu, Xu; Dou, Xinwei; Ding, Markus; Moretti, Arianna; Passerini, Stefano published the artcile< Prototype rechargeable magnesium batteries using ionic liquid electrolytes>, Formula: C3H7BrO, the main research area is magnesium ion speciation deposition dissolution process magnesium battery electrolyte; rechargeable magnesium battery ionic liquid electrolyte coordination sphere.

Understanding Mg-ion speciation is of utmost importance to the rational design of electrolytes for rechargeable magnesium batteries. Herein, we report an effort to better understand Mg-ion speciation in ionic liquid (IL) electrolytes through the design of alkoxy-functionalized cations with different alkoxy substituent. In contrast with previous studies focusing on the coordination sphere of Mg2+, the comparison of Raman spectroscopy, electrochem. and DFT calculation results of various IL-based electrolytes suggests that the coordination sphere of transient Mg+ plays a key role in Mg reversible deposition/dissolution process. Finally, a prototype Mg/V2O5 cell using the noncorrosive IL-based electrolyte is demonstrated for the first time, exhibiting a remarkable initial discharge capacity of 140 mAh g-1 and reversible capacity of 100 mAh g-1.

Journal of Power Sources published new progress about Battery electrolytes. 6482-24-2 belongs to class ethers-buliding-blocks, and the molecular formula is C3H7BrO, Formula: C3H7BrO.

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

Xiao, Peihong; Tang, Zhixing; Wang, Kai; Chen, Hua; Guo, Qianyou; Chu, Yang; Gao, Lu; Song, Zhenlei published the artcile< Chemoselective Reduction of Sterically Demanding N,N-Diisopropylamides to Aldehydes>, HPLC of Formula: 56724-03-9, the main research area is aldehyde preparation sterically demanding diisopropylamide chemoselective reduction.

A sequential one-pot process for chemoselectively reducing sterically demanding N,N-diisopropylamides to aldehydes has been developed. In this reaction, amides are activated with EtOTf to form imidates, which are reduced with LiAlH(OR)3 [R = t-Bu, Et] to give aldehydes by hydrolysis of the resulting hemiaminals. The non-nucleophilic base 2,6-DTBMP remarkably improves reaction efficiency. The combination of EtOTf/2,6-DTBMP and LiAlH(O-t-Bu)3 was found to be optimal for reducing alkyl, alkenyl, alkynyl, and 2-monosubstituted aryl N,N-diisopropylamides. In contrast, EtOTf and LiAlH(OEt)3 in the absence of base were found to be optimal for reducing extremely sterically demanding 2,6-disubstituted N,N-diisopropylbenzamides. The reaction tolerates various reducible functional groups, including aldehyde and ketone. 1H NMR studies confirmed the formation of imidates stable in water. The synthetic usefulness of this methodol. was demonstrated with N,N-diisopropylamide-directed ortho-metalation and C-H bond activation.

Journal of Organic Chemistry published new progress about Aldehydes Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 56724-03-9 belongs to class ethers-buliding-blocks, and the molecular formula is C9H10O2, HPLC of Formula: 56724-03-9.

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