Results 11 to 20 of about 487,838 (354)

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

open access: yesEnvironmental 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   +8 more
semanticscholar   +1 more source

Pharmaceutical Applications of Cellulose Ethers and Cellulose Ether Esters.

open access: yesBiomacromolecules, 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. Ç. Arca   +5 more
semanticscholar   +1 more source

Iron Oxide-Cobalt Nanocatalyst for O-tert-Boc Protection and O-Arylation of Phenols

open access: yesNanomaterials, 2018
Efficient and general protocols for the O-tert-boc protection and O-arylation of phenols were developed in this paper using a recyclable magnetic Fe3O4-Co3O4 nanocatalyst (Nano-Fe-Co), which is easily accessible via simple wet impregnation techniques in ...
Vilas B. Gade   +4 more
doaj   +1 more source

Probing the C-H Activation of Linear and Cyclic Ethers at (PNP)Ir [PDF]

open access: yes, 2009
Interaction of the amido/bis(phosphine)-supported (PNP)Ir fragment with a series of linear and cyclic ethers is shown to afford, depending on substrate, products of α,α-dehydrogenation (carbenes), α,β-dehydrogenation (vinyl ethers), or decarbonylation ...
Chen, Chun-Hsing   +6 more
core   +1 more source

Thioether-catalysed tandem synthesis of furans and cyclic ethers or lactones [PDF]

open access: yes, 2017
Acyclic conjugated ynenediones tethered to an alcohol or carboxylic acid are converted into furanyl-substituted cyclic ethers or lactones in a single step by treatment with the tetrahydrothiophene.
Clark, J. Stephen, Klaus, Verena
core   +1 more source

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

open access: yesJournal 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

Hydrogen spillover assisted by oxygenate molecules over nonreducible oxides

open access: yesNature 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   +9 more
doaj   +1 more source

Experimental and modeling study of the autoignition of 1-hexene/iso-octane mixtures at low temperatures [PDF]

open access: yes, 2005
Autoignition delay times have been measured in a rapid compression machine at Lille at temperatures after compression from 630 to 840 K, pressures from 8 to 14 bar, \Phi = 1 and for a iso octane/1 hexene mixture containing 82% iso-octane and 18% 1 hexene.
Barbé   +33 more
core   +3 more sources

Catalyst-controlled stereoselective cationic polymerization of vinyl ethers

open access: yesScience, 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

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

open access: yesAdvanced 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   +8 more
semanticscholar   +1 more source

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