Results 21 to 30 of about 1,208,360 (336)

Synthesis of ethers containing 1,3-dioxolane and gem-dichlorocyclopropane fragments

Тонкие химические технологии, 2021
Objectives. This study aimed to obtain ethers containing gem-dichlorocyclopropane and 1,3-dioxolane fragments and evaluate their cytotoxic properties against HEK293, SH-SY5Y, MCF-7, and A549 cell lines.Methods.
Sh. Sh. Dzhumaev, Yu. G. Borisova, G. Z. Raskil’dina, U. Sh. Kuzmina, R. R. Daminev, S. S. Zlotskii   +5 more
doaj   +1 more source

Experimental and Simulation Studies for Purification and Etherification of Glycerol from the Biodiesel Industry

AppliedChem, 2023
In this study, a purification route was applied to crude glycerol and its valorization via etherification was evaluated. Crude glycerol samples were obtained through transesterification reactions of soybean oil with methanol using potassium hydroxide as ...
Silvia S. O. Silva, Matheus R. Nascimento, Ricardo J. P. Lima, Francisco Murilo Tavares Luna, Célio Loureiro Cavalcante Júnior   +4 more
doaj   +1 more source

Alumination of Aryl Methyl Ethers: Switching Between Sp2 and Sp3 C–O Bond Functionalisation with Pd-Catalysis

, 2021
The reaction of [{(ArNCMe)2CH}Al] (Ar = 2,6-di-iso-propylphenyl, 1) with aryl methyl ethers proceeded with alumination of the sp3 C–O bond by a presumed SN2 pathway. The selectivity of this reaction could be switched by inclusion of a catalyst.
Thomas N, hooper, Mark, Crimmin, Andrew J. P., White, Feriel, Rekroukh, Ryan, Brown, Paulo J., Costa   +5 more
core   +1 more source

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

Fatty Acid Methyl Esters as Biosolvents of Epoxy Resins: A Physicochemical Study [PDF]

, 2007
The C8 to C18 fatty acid methyl esters (FAME) have been compared as solvents for two epoxy resin pre-polymers, bisphenol A diglycidyl ether (DGEBA) and triglycidyl paminophenol ether (TGPA).
Thiebaud-Roux, Sophie, Lacaze-Dufaure, Corinne, De Caro, Pascale, Medina-Gonzalez, Yaocihuatl   +3 more
core   +1 more source

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

Development of sample clean up methods for the analysis of Mycobacterium tuberculosis methyl mycocerosate biomarkers in sputum extracts by gas chromatography-mass spectrometry. [PDF]

, 2015
A proof of principle gas chromatography-mass spectrometry method is presented, in combination with clean up assays, aiming to improve the analysis of methyl mycocerosate tuberculosis biomarkers from sputum.
O'Sullivan, Denise M., Minnikin, David E, Mutetwa, Reggie, Lee, Oona Y.-C, O'Sullivan, Denise M, Minnikin, David E., McNerney, Ruth, Morgan, Geraint, Turner, Nicholas W, Lee, Oona Y.-C., Corbett, Liz E., Morgan, Geraint H, Corbett, Liz E, Lee, Oona Y-C, Nicoara, Simona C., Turner, Nicholas W., Morgan, Geraint H., Nicoara, Simona C   +17 more
core   +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