Author: Jessica.F

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

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

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

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

Sparey, Tim; Beher, Dirk; Best, Jonathan; Biba, Mirlinda; Castro, Jose L.; Clarke, Earl; Hannam, Joanne; Harrison, Timothy; Lewis, Huw; Madin, Andrew; Shearman, Mark; Sohal, Bindi; Tsou, Nancy; Welch, Christopher; Wrigley, Jonathan published the artcile< Cyclic sulfamide γ-secretase inhibitors>, Product Details of C3H8ClNO2S, the main research area is cyclic sulfamide derivative preparation gamma secretase inhibitor.

A novel series of N-alkyl-substituted cyclic sulfamides were developed from a screening hit. Chemistries were developed which allowed surveys of N-alkyl groups and amines resulting in the identification of N-trifluoroethyl-substituted cyclic sulfamides with good in vitro and in vivo γ-secretase activity. One compound with subnanomolar activity elicited a reduction in brain Aβ40 after oral dosing in APP-YAC mice.

Bioorganic & Medicinal Chemistry Letters published new progress about Alzheimer disease. 10305-42-7 belongs to class ethers-buliding-blocks, and the molecular formula is C3H8ClNO2S, Product Details of C3H8ClNO2S.

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

Hirsh, Andrew J.; Molino, Bruce F.; Zhang, Jianzhong; Astakhova, Nadezhda; Geiss, William B.; Sargent, Bruce J.; Swenson, Brian D.; Usyatinsky, Alexander; Wyle, Michael J.; Boucher, Richard C.; Smith, Rick T.; Zamurs, Andra; Johnson, M. Ross published the artcile< Design, Synthesis, and Structure-Activity Relationships of Novel 2-Substituted Pyrazinoylguanidine Epithelial Sodium Channel Blockers: Drugs for Cystic Fibrosis and Chronic Bronchitis>, Application In Synthesis of 52244-70-9, the main research area is pyrazinoylguanidine epithelial sodium channel blocker preparation.

Amiloride, the prototypical epithelial sodium channel (ENaC) blocker, has been administered with limited success as aerosol therapy for improving pulmonary function in patients with the genetic disorder cystic fibrosis. This study was conducted to synthesize and identify more potent, less reversible ENaC blockers, targeted for aerosol therapy and possessing minimal systemic renal activity. A series of novel 2-substituted acylguanidine analogs of amiloride were synthesized and evaluated for potency and reversibility on bronchial ENaC. All compounds tested were more potent and less reversible at blocking sodium-dependent short-circuit current than amiloride. Compounds I [R = NH(CH2)4C6H4O(CH2)2OH-4, NH(CH2)4C6H4O(CH2)3OH-4, NH(CH2)4C6H4OCH2CH(OH)CH2OH-4 (both R and S isomers)] showed the greatest potency on ENaC with IC50 values below 10 nM. A regioselective difference in potency was found, whereas no stereospecific difference in potency on ENaC was displayed. Lead compound I [R = NH(CH2)4C6H4OCH2CH(OH)CH2OH-4 (racemic)] was 102-fold more potent and 5-fold less reversible than amiloride and displayed the lowest IC50 value ever reported for an ENaC blocker.

Journal of Medicinal Chemistry published new progress about Chronic bronchitis. 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

Bhole, Ritesh P.; Naksakhare, Sachin R.; Bonde, Chandrakant G. published the artcile< A stability indicating HPTLC Method for apremilast and identification of degradation products using MS/MS>, Electric Literature of 608141-42-0, the main research area is apremilast degradation product high performance liquid chromatog pharmaceutical formulation.

Aim: Apremilast is used for treatment of certain types of psoriasis, psoriatic arthritisand plaque psoriasis is a type of skin condition. An extensive literature search revealed that there exist very few methods on RP-HPLC reported and HPTLC method was not reported. This study deals with simple, precise, accurate and economical stability indicating HPTLC method development with validation as per ICH guidelines with application of developed method on in Apremilast pharmaceutical formulations and Identified and Characterization of degradation products using MS/MS. Method: Precoated Silica gels plates were used as stationary phase. Toluene: Et Acetate (4:6; volume/volume) was delivered best separation at 236 nm (Rf 0.55 ± 0.02) by densitometry anal. Degradation anal. was performed as per ICH guidelines (Q2R1). Isolation of degradation product by HPTLC method and identify by MS/MS method. Results: The linearity was 100-600 ng with R2 of 0.997 while, % RSD was in range. LOD and LOQ of Apremilast were found 0.77ng/spot and 2.35ng/spot resp. The recovery of Apremilast was found to be 99.70 ± 0.23%. The % assay of active substance was found in a range 80.62 to 100. HPTLC and MS/MS method revealed possible degradation mechanism of 11 degradant products. Conclusion: The Proposed developed and validated HPTLC method was found to be more sensitive, simple, precise, accurate, cost effective and robust. This method could be applied for anal. of bulk drug and tablet formulation, degradation study. This degradation pathway of drug will help to identify the degradation products of Apremilast.

Journal of Pharmaceutical Sciences and Research published new progress about HPLC. 608141-42-0 belongs to class ethers-buliding-blocks, and the molecular formula is C12H19NO4S, Electric Literature of 608141-42-0.

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

Wang, Tao; Hoffmann, Marvin; Dreuw, Andreas; Hasagic, Edina; Hu, Chao; Stein, Philipp M.; Witzel, Sina; Shi, Hongwei; Yang, Yangyang; Rudolph, Matthias; Stuck, Fabian; Rominger, Frank; Kerscher, Marion; Comba, Peter; Hashmi, A. Stephen K. published the artcile< A Metal-Free Direct Arene C-H Amination>, Recommanded Product: 2-Methoxy-N-methylaniline, the main research area is aryl amine preparation chemoselective; arene hydroxylamine amination.

Here, a metal-free arene e.g., mesitylene C-H amination using hydroxylamine derivatives 4-(CH3)C6H5S(O)2ON(R)R1 (R = H, Me; R1 = Me, Boc, Bn, etc.) under benign conditions was reported. A charge transfer interaction between the aminating reagents and the arene substrates enables the chemoselective amination of the arene, even in the presence of various functional groups. Oxygen was crucial for an effective conversion and its accelerating role for the electron transfer step was proven exptl. In addition, this was rationalized by a theor. study which indicated the involvement of a dioxygen-bridged complex with a “”Sandwich-like”” arrangement of the aromatic starting materials and the aminating agents at the dioxygen mol.

Advanced Synthesis & Catalysis published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 10541-78-3 belongs to class ethers-buliding-blocks, and the molecular formula is C8H11NO, Recommanded Product: 2-Methoxy-N-methylaniline.

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

Flippin, Lee A.; Muchowski, Joseph M.; Carter, David S. published the artcile< Directed metalation of aromatic aldimines with lithium 2,2,6,6-tetramethylpiperidide>, Recommanded Product: 3-Methoxy-2-methylbenzaldehyde, the main research area is lithiation aromatic aldimine lithium tetramethylpiperidide; piperidide lithiotetramethyl lithiation aldimine; benzaldehyde methyl.

N-Cyclohexyl aromatic aldimines are ortho-lithiated or o-methyl-lithiated with 2 equiv of lithium 2,2,6,6-tetramethylpiperidide (LTMP) in THF solution at -15°. The lithiated intermediates generally reacted with alkyl halides or CO2 to provide ortho-functionalized aldimine products which could be readily converted to the corresponding aldehydes by hydrolysis with aqueous 4 M HCl. Aromatic aldimines derived from (±)-trans-2-methylcyclohexylamine or 3-amino-2,4-dimethylpentane are resistant toward C=N addition with 1 equiv of n-BuLi at 0° in THF solution; however, they are also surprisingly resistant toward directed metalation reactions with either LTMP or n-BuLi. Exceptions to the ortho-directing and o-methyl-directing effects of the aldimine group were observed in a reaction of 3-methylthiophene-2-carboxaldehyde cyclohexylimine with LTMP, followed by CH3I, which gave a 9:1 mixture of 3,5-dimethylthiophene-2-carboxaldehyde cyclohexylimine and 5-ethyl-3-methylthiophene-2-carboxaldehyde cyclohexylimine, and a reaction of p-tolualdehyde 2,4-dimethylpent-3-ylimine with either n-BuLi or LTMP, followed by CH3I, which gave p-ethylbenzaldehyde 2,4-dimethylpent-3-ylimine.

Journal of Organic Chemistry published new progress about Aldimines Role: RCT (Reactant), RACT (Reactant or Reagent). 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

Wedler, C.; Haage, K.; Herbst, M.; Tischer, H.; Knofe, E. published the artcile< Preparation and some properties of amine oxides derived from defined ethylene oxide adducts>, Recommanded Product: 2,2′-(Tridecylazanediyl)diethanol, the main research area is amine oxide preparation solubility; bishydroxyethylalkylamine oxide preparation solubility; thermal analysis bishydroxyethylalkylamine oxide; addition ethylene oxide amine.

Procedures for the prepn of bis(hydroxyethyl)alkylamine oxides are presented. The solubilities and DTA of a number of amine oxides are also reported.

Abhandlungen der Akademie der Wissenschaften der DDR, Abteilung Mathematik, Naturwissenschaften, Technik published new progress about Addition reaction. 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