Results 11 to 20 of about 1,208,688 (305)

SnBr2-catalyzed highly selective synthesis of alkyl ethers from monoterpenes

Comptes Rendus. Chimie, 2020
An efficient and Brønsted acid-free route to synthesize monoterpene ethers was developed using SnBr2 as inexpensive and commercially affordable catalyst.
da Silva, Márcio J., Viana, Luna A. S., Teixeira, Milena G.   +2 more
doaj   +1 more source

Desoxyhemigossypol 6-methyl ether [PDF]

Acta Crystallographica Section E Structure Reports Online, 2013
The title sesquiterpene [systematic name: 6-methoxy-10-methyl-7-(propan-2-yl)-2-oxatricyclo[6.3.1.04,12]dodeca-1(11),4,6,8(12),9-pentaen-5-ol], C16H18O3, was isolated from pathogen-infected stele tissue ofGossypium barbadense. There are two molecules in the asymmetric unit and the dihedral angle between their naphthofuran systems is 86.48 (2)°.
Vyacheslav V. Uzbekov, Samat A. Talipov, Bakhtiyar T. Ibragimov, Robert D. Stipanovic, Jinggao Liu   +4 more
openaire   +3 more sources

Sphingolipid bases. A revisitation of the O-methyl derivatives of sphingosine. Isolation and characterization of diacetate derivatives, with revised 13C nuclear magnetic resonance assignments for D-erythro-sphingosine.

Journal of Lipid Research, 1995
As described by Carter et al. (J. Biol. Chem. 1951. 192: 197-207), O-methyl derivatives of sphingosine are formed upon acid hydrolysis of sphingolipids in the presence of methanol.
A Kisic, M Tsuda, R J Kulmacz, W K Wilson, G J Schroepfer, Jr   +4 more
doaj   +1 more source

Synthesis and Characterization of Cellulose Ethers from Screw Pine (Pandanus tectorius) Leaves Cellulose as Food Additives

International Journal of Technology, 2023
Isolation of cellulose from Screw pine (Pandanus tectorius) leaves and its transformation into cellulose ethers have been successfully conducted. Crystalline cellulose was obtained as a white powder in 40.24% yield from dried Screw pine leaf powder ...
Venty Suryanti, Triana Kusumaningsih, Diah Safriyani, Indri Sri Cahyani   +3 more
doaj   +1 more source

Exploring the Selective Demethylation of Aryl Methyl Ethers with a Pseudomonas Rieske Monooxygenase

ChemBioChem, 2018
Biocatalytic dealkylation of aryl methyl ethers is an attractive reaction for valorization of lignin components, as well as for deprotection of hydroxy functionalities in synthetic chemistry. We explored the demethylation of various aryl methyl ethers by
E. Lanfranchi, Miloš Trajković, Katalin Barta, J. D. de Vries, D. Janssen   +4 more
semanticscholar   +1 more source

Isobaric Vapor Liquid Equilibrium at 101.3 kPa for the Binary Mixtures 2-Methyl-2-Butene / TAME and 2-Methyl-1- Butene / TAME

Chemical Engineering Transactions, 2013
Due to the increased interest for using tertiary ethers as fuel additives (such as TAME – tert-amyl-methyl-ether synthesis), the research intensified to study its thermodynamic aspects.
M. Bernabeu Diaz, V. Plesu, J. Bonet Ruiz, A.E. Bonet Ruiz, J. Llorens Llacuna   +4 more
doaj   +1 more source

Chlorosphaeropsidone and Epichlorospaeropsidone, Two New Chlorinated Dimedone Methyl Ethers Isolated from Liquid Cultures of «Sphaeropsis sapinea» f. sp. «cupressi»

Phytopathologia Mediterranea, 2007
Two new dimedone methyl ethers, named chlorosphaeropsidone and epichlorosphaeropsidone were isolated from the culture filtrates of Sphaeropsis sapinea f. sp. cupressi, the causal agent of a canker of Italian cypress (Cupressus sempervirens L.).
Andrea Motta, Anna Andolfi, Antonio Evidente, Federico Giordano, Giovanni Bruno, Lorenzo Sparapano   +5 more
doaj   +1 more source

Analysis of the volatile compounds in Fuliji roast chicken during processing and storage based on GC-IMS

Current Research in Food Science, 2022
To investigate the flavor changes of Fuliji roast chicken during processing and storage, the volatile organic compounds (VOCs) during processing (fresh, fried, stewed and sterilized) and storage (1 month, 2 months and 4 months) were determined by gas ...
Hui Zhou, Wei Cui, Yafei Gao, Ping Li, Xinyuan Pu, Ying Wang, Zhaoming Wang, Baocai Xu   +7 more
doaj   +1 more source

Final Report on the Safety Assessment of PPG-2 Methyl Ether, PPG-3 Methyl Ether, and PPG-2 Methyl Ether Acetate [PDF]

International Journal of Toxicology, 2009
PPG-2 methyl ether, PPG-3 methyl ether, and PPG-2 methyl ether acetate are used in cosmetics as fragrance ingredients and/or solvents at concentrations of 0.4% to 2%. Propylene glycol ethers are rapidly absorbed and distributed throughout the body when introduced by inhalation or oral exposure, but the inhalation toxicity of PPG-2 methyl ether vapor ...
Valerie, Robinson, Wilma F, Bergfeld, Donald V, Belsito, Curtis D, Klaassen, James G, Marks, Ronald C, Shank, Thomas J, Slaga, Paul W, Snyder, F Alan, Andersen   +8 more
openaire   +2 more sources

Stereoselective Synthesis of (+)-Ferruginyl Methyl Ether and (+)-Sugiyl Methyl Ether

Journal of Chemical Research, 2000
A facile stereoselective synthetic procedure to (+)-ferruginyl methyl ether and (+)-sugiyl methyl ether has been developed with high stereoselectivity and overall yield.
Gan Yonghong, Pan Xinfu
openaire   +1 more source