Results 1 to 10 of about 1,208,360 (336)

Oxygen-doped carbon-supported palladium nanoparticles boost the tandem hydrogenation–acetalization–hydrogenolysis of phenols and diphenyl ethers to cyclohexyl ethers

Nature Communications
The one-pot hydrotreatment of phenols to cyclohexyl ethers is crucial but difficult to achieve for fine chemical synthesis owing to the easy overhydrogenation to cyclohexanols over traditional metal–acid bifunctional catalysts.
Lang Jiang, Xiang Li, Yiqian Ma, Yiliang Hua, Yicheng Peng, Mengxiang Ma, Chengxiang Shi, Jun Wang, Ji-Jun Zou, Qiang Deng   +9 more
doaj   +1 more source

Some important ethyl and ethyl-methyl ethers of flavonols: transformation of quercimeritrin into O-tetraethylrhamnetin [PDF]

, 1949
The use of ethylation in the study of naturally occurring glycosides and partial methyl ethers of hydroxy flavones is discussed. This procedure renders the work simpler and more definite. Starting from ω-ethoxy res-and phloracetophenones, the preparation
Thiruvengadam, T. R., Ramachandra Row, L., Seshadri, T. R.   +2 more
core   +1 more source

Efficient Synthesis of a Range of 1-Hydroxy-2-(1-Alkyloxymethyl)-9,10-Anthraquinone Derivatives [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 1995
Five new 1-hydroxy-2-(1-alkyloxymethyl)-9,10-Anthraquinones (9a-e) have been prepared. Selective nitration of 2-methyl-9,10-anthraquinone, reduction to the corresponding amine, diazotization and treatment by sulfuric acid solution afforded the 1-hydroxy ...
Hashem Sharghi, Ali Forghaniha
doaj  

Occurrence and Sources of Triterpenoid Methyl Ethers and Acetates in Sediments of the Cross-River System, Southeast Nigeria

International Journal of Analytical Chemistry, 2010
Pentacyclic triterpenol methyl ethers (PTMEs), germanicol methyl ether (miliacin), 3-methoxyfern-9(11)-ene (arundoin), β-amyrin methyl ether (iso-sawamilletin), and 3-methoxytaraxer-14-ene (sawamilletin or crusgallin) were characterized in surface ...
O. Oyo-Ita, B. Ekpo, D. Oros, B. Simoneit   +3 more
semanticscholar   +1 more source

Profiling of volatile compounds in four Egyptian date cultivars

Пищевые системы
Volatile compound plays an important role in consumers’ satisfaction and influences further consumption of the date fruit. Thus, the study analyzed the volatile compounds of three date fruit cultivars: Barhy, Samani, Zaghloul at khalal stage of ripeness (
T. G. Abedelmaksoud, M. A. Hassan, M. T. M. Assous, A. E. R. M. Khalaf-Allah   +3 more
doaj   +1 more source

Conversion of fatty aldehyde dimethyl acetals to the corresponding alk-1-enyl methyl ethers (substituted vinyl ethers) during gas-liquid chromatography

Journal of Lipid Research, 1967
The behavior of palmitaldehyde and linolealdehyde and of their dimethyl acetals during gas-liquid chromatography on Β-cyclodextrin acetate (Β-CDX acetate) and ethylene glycol succinate polyester-phosphoric acid (EGSP) columns was studied.
V. Mahadevan, C.V. Viswanathan, F. Phillips   +2 more
doaj   +1 more source

Cyanoethylation of methyl and ethyl ethers of dimethylphenols [PDF]

, 1976
The C-cyanoethylation of the methyl and ethyl ethers of dimethylphenols has been carried out with acrylonitrile in the presence of anhydrous AlCl3 to furnish propionitrile derivatives.
Merchant, J. R., Kamath, Meera S.
core   +1 more source

In-Solution Conformational Analysis of the XCYCH3 Moiety for Small Esters and Ethers with all Combinations of X, Y = O, S

Molecules, 2013
Favorable steric and electrostatic fit of a ligand to a receptor is of central interest in theoretical drug design. This paper considers the effects of non-protic solvents, in comparison with the gas phase, on the preferred conformation of the XCYCH3 ...
Peter I. Nagy
doaj   +1 more source

Reductive Electrophilic Substitution of Diarylmethyl Methyl Ethers: Synthetic Applications

, 1994
The reductive cleavage of diarylmethyl methyl ethers with Li metal in THF led to quantitative formation of the corresponding diarylmethyl anions.
C. Finà, M. Marchetti, G. Melloni, B. Sechi, E. Fenude, AZZENA, Ugo Gavino   +5 more
core   +1 more source

An Oxidation of Benzyl Methyl Ethers with NBS that Selectively Affords Either Aromatic Aldehydes or Aromatic Methyl Esters

Journal of Organic Chemistry, 2010
Either mono- or di-bromination of benzyl methyl ethers can be achieved by controlling the amount of NBS and the temperature. Elimination of methyl bromide from the monobrominated intermediates produces aromatic aldehydes, whereas hydrolysis of the ...
Abdelrahman S. Mayhoub, A. Talukdar, M. Cushman   +2 more
semanticscholar   +1 more source