Results 11 to 20 of about 1,031,429 (341)

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

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

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

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

Oxygen-Free Regioselective Biocatalytic Demethylation of Methyl-phenyl Ethers via Methyltransfer Employing Veratrol-O-demethylase

ACS Catalysis, 2020
The cleavage of aryl methyl ethers is a common reaction in chemistry requiring rather harsh conditions; consequently, it is prone to undesired reactions and lacks regioselectivity. Nevertheless, O-demethylation of aryl methyl ethers is a tool to valorize
C. Grimm, Mattia Lazzarotto, Simona Pompei, Johanna Schichler, Nina Richter, Judith E. Farnberger, M. Fuchs, W. Kroutil   +7 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

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

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

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

CuCl2-catalyzed One-pot Formation of Tetrahydroquinolines from N-Methyl-N-alkylanilines and Vinyl Ethers in the Presence of t-Butylhydroperoxide

Molecules, 2006
Tetrahydroquinoline skeletons can be formed by a CuCl2-catalyzed one-potreaction of N-methyl-N-alkylanilines and vinyl ethers in the presence of t-butyl-hydroperoxide.
Yanfeng Jiang, Chanjuan Xi, Xianghua Yang   +2 more
doaj   +1 more source