Results 131 to 140 of about 1,208,360 (336)

UNIMOLECULAR REACTIONS OF IONIZED METHYL BUTENYL ETHERS

The reactions of metastable C4H7OCH3.+ radical cations generated by ionization of methyl ethers derived from stable butenols have been investigated by means of H-2- and C-13-labeling experiments, kinetic energy release measurements and analysis of ...

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Directed Amination of Aryl Methyl Ethers Mediated by Ti(NMe₂)₄ at Room Temperature

, 2015
An efficient C–O amination of aryl methyl ethers has been achieved. This transformation proceeds via imine-directed Ti­(IV)-mediated cross-coupling reactions between aryl methyl ethers and Ti­(NR2)4 at room temperature, straightforwardly leading to a ...
Jinna Liu (1566268), Yanmei Chen (114960), Yahong Li (570004), Hao Pei (1537972), Zhou Chen (1566265), Jian Wu (41301), Wu Li (283210), Wei Liu (20030)   +7 more
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Cucurbit[8]Uril Achieved Single‐Molecule Chiral Transfer to Supramolecular Circularly Polarized Luminescence

Advanced Science, EarlyView.
A single‐molecule cascade supramolecular system comprising L/D‐FPy, CB[8], and SC4AD serves as an efficient light‐harvesting platform. It facilitates cascade energy transfer and chiral transfer to acceptor dyes. Co‐assembly with a PVA matrix produces a multicolor solid film that exhibits enhanced luminescence dissymmetry factors (glum), enabling ...
Yongxue Li, Jie Wu, Weiheng Zhang, Hengzhi Zhang, Wei‐Lei Zhou, Yu Liu   +5 more
wiley   +1 more source

Localizable Fluorescent Metal Ion Indicators With Tunable Colors

Advanced Science, EarlyView.
A modular platform enables the generation of fluorescent metal ion indicators with tunable emission colors and precise subcellular localization. Conjugation to self‐labeling proteins yields bright, color‐tunable potassium probes that permit wash‐free live‐cell imaging, revealing dynamic potassium efflux in stimulated neurons.
Ming‐Ming Wang, De‐en Sun, Klara Gries, Kai Johnsson   +3 more
wiley   +1 more source

An Efficient and Short Route for the Synthesis of Reverse Pyrrole Ribonucleosides

Journal of the Brazilian Chemical Society, 2002
The synthesis of reverse pyrrole ribonucleosides methyl 5-C-(4-acetyl-5-methyl-pyrrol-1-yl)-2,3-O-isopropylidene-5-deoxy- beta-D-ribofuranoside (10), methyl 5-C-(4-ethoxycarbonyl-5-methyl-pyrrol-1-yl)-2,3-O-isopropylidene-5-deoxy- beta-D-ribofuranoside ...
Pereira Letícia O. R., Cunha Anna C., Souza Maria Cecília B. V. de, Ferreira Vitor F.   +3 more
doaj  

Artificial cellulose derivatives are metabolized by select human gut Bacteroidota upon priming with common plant β-glucans

Journal of Bacteriology
Synthetic ethers of cellulose (β(1,4)-glucan) are widely used in the food and pharmaceutical industry as thickeners, gelling agents, emulsifiers, and stabilizers.
Deepesh Panwar, William A. Stewart, Andrew Rodd, Harry Brumer   +3 more
doaj   +1 more source

Notizen/Notes Synthesis of -Oxo Esters from Silyl Enol Ethers and Dichlorobis(phenoxy)methane [PDF]

, 1990
Bäuml, Englbert, Mayr, Herbert, Cambanis, Anton   +2 more
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Facial-selective allylation of methyl ketones for the asymmetric synthesis of tertiary homoallylic ethers

, 2004
The stereoselective allylation of methyl ketones is described to give tertiary homoallylic ethers, which can easily be transformed into homoallylic alcohols by a Birch reduction.
Kinzel, T., Wegner, C., Holsken, S., Tietze, Lutz Friedjan, Adrio, J.   +4 more
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Ultra‐Low Intensity Continuous Wave Laser Ablation Propulsion With Graphene‐Engineered Wood

Advanced Science, EarlyView.
Graphene delignified wood converts continuous wave laser energy into thrust. Laser propulsion experiments in vacuum reveal the lowest laser ablation threshold intensities and the greatest density‐normalized specific impulse in literature. The results highlight graphene delignified wood as a potential efficient, sustainable, strong, and lightweight ...
Afnan S. M. Elmubasher, Rami Elkaffas, Mohamed Hamid Salim, Basel Altawil, Chanaka Sandaruwan, Shanavas Shajahan, Ahsan Baidar Bakht, Irfan Hussain, Blaise L. Tardy, Sean S. M. Swei, Yarjan Abdul Samad   +10 more
wiley   +1 more source

MASS-SPECTRA OF ALKENYL METHYL ETHERS

Electron impact ionization mass spectra of numerous alkenyl methyl ethers C(n)H2n-1OCH3 (n = 3-6) recorded under normal (4 kV, 70 eV, 175-degrees-C) and low-energy, low-temperature (8 kV, 12 eV, 75-degrees-C) conditions are reported. The influence of the

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