Results 11 to 20 of about 422,953 (355)

Electrophotocatalytic C-H Functionalization of Ethers with High Regioselectivity.

Journal of the American Chemical Society, 2020
The highly regioselective electrophotocatalytic C-H functionalization of ethers is described. These reactions are catalyzed by a trisaminocyclopropenium (TAC) ion in a mild electrochemical potential with visible light irradiation.
He Huang, Z. Strater, T. Lambert
semanticscholar   +1 more source

Organophosphate Ester Flame Retardants: Are They a Regrettable Substitution for Polybrominated Diphenyl Ethers?

Environmental Science and Technology Letters, 2019
As the use of polybrominated diphenyl ethers (PBDEs), and the entire class of organohalogen flame retardants, is declining, the use of organophosphate esters flame retardants (OPFRs) is increasing.
A. Blum, M. Behl, L. Birnbaum, M. Diamond, A. Phillips, Veena Singla, Nisha S. Sipes, H. Stapleton, M. Venier   +8 more
semanticscholar   +1 more source

Pharmaceutical Applications of Cellulose Ethers and Cellulose Ether Esters.

Biomacromolecules, 2018
Cellulose ethers have proven to be highly useful natural-based polymers, finding application in areas including food, personal care products, oil field chemicals, construction, paper, adhesives, and textiles.
H. C. Arca, Laura I. Mosquera-Giraldo, Vivian Bi, Daiqiang Xu, L. Taylor, K. Edgar   +5 more
semanticscholar   +1 more source

Oxalic Diamides and tert-Butoxide: Two Types of Ligands Enabling Practical Access to Alkyl Aryl Ethers via Cu-Catalyzed Coupling Reaction.

Journal of the American Chemical Society, 2019
A robust and practical protocol for preparing alkyl aryl ethers has been developed, which relies on using two types of ligands to promote Cu-catalyzed alkoxylation of (hetero)aryl halides.
Zhixiang Chen, Yongwen Jiang, Li Zhang, Yinlong Guo, D. Ma   +4 more
semanticscholar   +1 more source

Scientific Opinion on Flavouring Group Evaluation 23, Revision 3 (FGE.23Rev3): Aliphatic, alicyclic and aromatic ethers including anisole derivatives from chemical groups 15, 16, 22, 26 and 30

EFSA Journal, 2011
The Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids of the European Food Safety Authority was requested to evaluate 20 flavouring substances in the Flavouring Group Evaluation 23, Revision 3, using the Procedure in Commission ...
EFSA Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids (CEF)
doaj   +1 more source

Hydrogen spillover assisted by oxygenate molecules over nonreducible oxides

Nature Communications, 2022
Spontaneous migration of H-atoms from metal particles to a nonreducible oxide support is generally limited by thermodynamics. Here, small oxygenate molecules are found to act as effective H-carriers to promote this process and lead to much improved ...
Mingwu Tan, Yanling Yang, Ying Yang, Jiali Chen, Zhaoxia Zhang, Gang Fu, Jingdong Lin, Shaolong Wan, Shuai Wang, Yong Wang   +9 more
doaj   +1 more source

Ethers Illume Sodium‐Based Battery Chemistry: Uniqueness, Surprise, and Challenges

Advanced Energy Materials, 2018
Sodium‐ion batteries (SIBs) have the potential to be practically applied in large‐scale energy storage markets. The rapid progress of SIBs research is primarily focused on electrodes, while electrolytes attract less attention.
Jun Zhang, Da‐Wei Wang, Wei Lv, L. Qin, Shuzhang Niu, Siwei Zhang, Tengfei Cao, F. Kang, Quan-hong Yang   +8 more
semanticscholar   +1 more source

Complexes of aluminum, iron(III), and gallium(III) chlorides with ethers in synthesis of highly reactive polyisobutylene

Журнал Белорусского государственного университета: Химия, 2020
In this review, the latest achievements in the field of cationic polymerization of isobutylene catalyzed by the complexes of conventional Lewis acids with ethers are presented.
Sergei V. Kostjuk
doaj   +1 more source

Enol Ethers Are Effective Monomers for Ring-Opening Metathesis Polymerization: Synthesis of Degradable and Depolymerizable Poly(2,3-dihydrofuran).

Journal of the American Chemical Society, 2019
Enol ethers are widely used as quenching reagents for Grubbs catalysts. However, we report the surprisingly effective ring-opening metathesis polymerization (ROMP) of cyclic enol ethers, because the resulting electron-rich ruthenium alkylidene complex ...
Jonathan Feist, Yan Xia
semanticscholar   +1 more source

Catalyst-controlled stereoselective cationic polymerization of vinyl ethers

Science, 2019
The right hand lines up vinyl ethers Well-optimized catalysts produce vast quantities of isotactic polypropylene, in which the side chains all face the same way.
Aaron J. Teator, Frank A. Leibfarth
semanticscholar   +1 more source