Results 91 to 100 of about 39,456 (303)

Electrochemical Study of Diphenyl Ether Derivatives Used as Herbicides

International Journal of Electrochemistry, 2011
The electrochemical behaviour of five nitro diphenyl ethers used as herbicides is investigated in acetonitrile. A detailed study by cyclic voltammetry and exhaustive electrolysis is carried out for the anodic oxidation of 2-Chloro-6-nitro-3 ...
Amira Zaouak, Fatma Matoussi, Mohamed Dachraoui   +2 more
doaj   +1 more source

Polymerization of Cyclic Ethers Initiated by the Reaction of Cyclic Ether with Hexafluoropropylene Oxide.

NIPPON KAGAKU KAISHI, 2002
フッ素含有率の高いヘキサフルオロプロピレンオキシド(HFPO)と環状エーテルとの反応による重合について検討を行った．モノマーとして六員環エーテルであるテトラヒドロピラン(THP)を用いたときには，重合体は得られなかった．四員環エーテルであるオキセタン，および三員環エーテルであるプロピレンオキシド(PO)をモノマーとして用いたときに重合生成物が得られた． モノマーとしてオキセタンを用いたときに，最も高分子量の重合体を得ることができ，その数平均分子量は4.8 × 103であった．これは，オキセタンの開環重合反応性が，環状エーテルの中で最も高いためであると考えられる． モノマーとしてプロピレンオキシド(PO)を用いたときに得られる重合生成物は ...
Yasuyuki MASUBUCHI, Tokio HAGIWARA, Youichi IKEGAYA, Seiji KAWATA, Noriyuki YONEZAWA   +4 more
openaire   +2 more sources

3D‐Printed Hygroscopic Polymer Networks for High‐Humidity Triboelectric Nanogenerators to Wirelessly Power Implantable Electronic Devices‐ A Conceptual Pathway

Advanced Functional Materials, EarlyView.
This work develops 3D‐printable tribopolymer networks that can enhance triboelectric performance under high humidity environments. Polar hydrophilic functional groups and incorporation of zwitterionic monomers promote bound‐water–dominated interfacial polarization thereby increasing electrical outputs.
Linguangze Zhuo, Jiawang Zeng, Qian Chen, Valentin A. Bobrin, Deepak Mishra, Anthony Chun Yin Yuen, Yixia Zhang, Cyrille Boyer, Jin Zhang   +8 more
wiley   +1 more source

Visible-light-induced radical-cascade alkylation/cyclization of N-methacryloyl-2-phenylbenzimidazole: Access to benzoimidazo[2,1-a]isoquinolin-6(5H)-ones

Green Synthesis and Catalysis
A metal-free visible-light-induced synthesis of aza-polycyclic aromatic hydrocarbons via cascade alkylation/cyclization of N-methacryloyl-2-phenylbenzimidazole was developed.
Yanhong Wang, Xinlei Zhou, Tao Zhang, Xinxin Ren, Wei Xu, Bin Wang, Weiwei Jin, Yu Xia, Chenjiang Liu, Yonghong Zhang   +9 more
doaj   +1 more source

Copper-Catalyzed Enantioselective Oxysulfenylation of Alkenols: Synthesis of Arylthiomethyl-Substituted Cyclic Ethers. [PDF]

ACS Catal, 2022
Burde AS, Chemler SR.
europepmc   +1 more source

Hydrazones as Singular Reagents in Asymmetric Organocatalysis [PDF]

, 2016
This Minireview summarizes strategies and developments regarding the use of hydrazones as reagents in asymmetric organocatalysis, their distinct roles in nucleophile–electrophile, cycloaddition, and cyclization reactions.
Fernández Fernández, Rosario Fátima, Lassaletta, José M., Matador Martínez, Esteban, Monge Fernández, David, Retamosa Hernández, María Gracia   +4 more
core   +1 more source

Structural and Chemical Engineering of Sub‐Nanochannel Membranes Toward Ion Selectivity

Advanced Functional Materials, EarlyView.
This review summarizes recent advances in structural and chemical engineering of sub‐nanochannels for ion selectivity. We first introduce fundamental ion transport mechanisms within sub‐nanochannels, followed by strategies to tune pore size, geometry, and surface functionalities, categorized into charge‐based, ion‐recognition, hydrophilic bonding, and ...
Yuyu Su, Huacheng Zhang, Tamar L. Greaves, Qi Han, Weiwei Lei, Dan Liu   +5 more
wiley   +1 more source

Reaction engineering blocks ether cleavage for synthesizing chiral cyclic hemiacetals catalyzed by unspecific peroxygenase

Nature Communications
Hemiacetal compounds are valuable building blocks in synthetic chemistry, but their enzymatic synthesis is limited and often hindered by the instability of hemiacetals in aqueous environments.
Xiaofeng Han, Fuqiang Chen, Huanhuan Li, Ran Ge, Qianqian Shen, Peigao Duan, Xiang Sheng, Wuyuan Zhang   +7 more
doaj   +1 more source

Copper-catalyzed enantioselective alkene carboetherification for the synthesis of saturated six-membered cyclic ethers. [PDF]

Chem Commun (Camb), 2021
Berhane IA, Burde AS, Kennedy-Ellis JJ, Zurek E, Chemler SR.   +4 more
europepmc   +1 more source

Cyclic ether

, 2013
A process for preparing cyclic ethers is described. The process involves the reaction of at least one organic compound such as diols or polyol which it has at least one pair of hydroxyl groups separated by 5 or 5 carbon atoms, and which is capable of being converted into an ether linkage, with an organic carbonate in the presence of a base. The base is
H. Bevinakatti, C. Newman, S. Ellwood, TUNDO, Pietro, ARICO', Fabio, M. Schroeder   +5 more
openaire   +1 more source