Results 41 to 50 of about 1,208,360 (336)
Nature Communications, 2020 Cross-coupling processes without the use of transition metals are challenging to achieve. Here, the authors show a transition-metal-free cross-coupling utilizing aryl(heteroaryl) methyl sulfoxides and alcohols to afford alkyl aryl(heteroaryl) ethers and ...
Guolin Li +7 more
doaj +1 more source
Synthesis of emodin methyl ethers
, 1977 Procedures are summarized for the conversion of emodin (1) into all possible mono- and di-methyl ethers. The 1-methyl ether (2) is characterized for the first time. The 1- and 8-methyl ethers are differentiated by small differences in the chemical shifts
MJ Crossley, DW Cameron
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Detection of Mycobacterium tuberculosis in sputum by gas chromatography-mass spectrometry of methyl mycocerosates released by thermochemolysis. [PDF]
, 2012 Tuberculosis requires rapid diagnosis to prevent further transmission and allow prompt administration of treatment. Current methods for diagnosing pulmonary tuberculosis lack sensitivity are expensive or are extremely slow.
Minnikin, David E +36 more
core +1 more source
Journal of Lipid Research, 1978 Artifacts formed by methylation of chenodeoxycholic acid with diazomethane are identical to the synthetic 3alpha- and 7 alpha-monomethyl ethers of methyl chenodeoxycholate. The extent of formation of these artifacts with time has been studied.
R Shaw, W H Elliott
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Beilstein Journal of Organic Chemistry, 2018 The application of heterogeneous catalysis and green solvents to the set up of widely employed reactions is a challenge in contemporary organic chemistry. We applied such an approach to the synthesis and further conversion of tetrahydropyranyl ethers, an
Ugo Azzena +4 more
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Molecules, 2021 A novel organocatalytic multicomponent cyanovinylation of aldehydes was designed for the synthesis of conjugated cyanomethyl vinyl ethers. The reaction was implemented for the synthesis of a 3-substituted 3-(cyanomethoxy)acrylates, using aldehydes as ...
Samuel Delgado-Hernández +2 more
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Synthesis of naturally occurring partial methyl ethers of myricetin [PDF]
, 1974 The synthesis of combretol, annulatin, and europetin-naturally occurring partial methyl ethers of myricetin-is described. Condensation of 2, 4, 6-trihydroxy-ω-methoxyacetophenone with tri-O-methyl galloyl chloride or tri-O-benzyl galloyl chloride ...
Sarma, P. N. +2 more
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Occurrence and Distribution of the Flavone Tricetin and its Methyl Derivatives as Free Aglycones
Natural Product Communications, 2008 This paper presents a review of the occurrence of tricetin and its methyl ethers, with respect to their occurrence in the free state. In addition to literature data, our tabulated survey also includes a dozen unpublished results.
Eckhard Wollenweber, Marion Dörr
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Rhodium-Catalyzed Cleavage Reaction of Aryl Methyl Ethers with Thioesters
, 2016 A rhodium complex catalyzed the reaction of aryl methyl ethers and thioesters giving the corresponding aryl esters and methyl sulfides. S-(p-Chlorophenyl) p-(dimethylamino)benzothioate was used for the reaction of methyl aryl ethers with electron ...
Yuri Nihei (2117929) +3 more
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Advanced Functional Materials, EarlyView.A bikitaite‐infused cellulose separator is introduced for Li metal batteries, leveraging bikitaite zeolite's ion‐conductive properties to regulate Li+‐ion flux and suppress dendrite growth. The membrane design ensures uniform Li plating, enhanced electrolyte wettability, and robust thermal/mechanical stability, delivering stable performance and low ...
Isheunesu Phiri +2 more
wiley +1 more source