Results 31 to 40 of about 39,456 (303)

Lewis Acid-Initiated Ring-Opening Reactions of Five- and Six-Membered Cyclic Ethers Based on the Oxonium Ylide Intermediates

open access: yesOrganics
In light of the small ring strain of five/six-membered cyclic ethers, constructing complex molecules via ring-opening reactions has consistently been a highly challenging topic in organic synthesis.
Dandan Jiang   +5 more
doaj   +1 more source

Thermophysical properties of binary mixtures of N,N-dimethylformamide with three cyclic ethers [PDF]

open access: yesJournal of the Serbian Chemical Society, 2013
Densities and viscosities of the binary mixtures consisting of tetrahydrofuran (THF), 1,3-dioxolane (1,3-DO) and 1,4-dioxane (1,4-DO) with N,N-dimethylformamide (DMF) over the entire range of composition were measured at temperatures 298.15, 308.15 ...
Sinha Biswajit   +4 more
doaj   +1 more source

Poly-p-hydroquinone Ethers: Isoenergetic Molecular Wires with Length-Invariant Oxidation Potentials and Cation Radical Excitation Energies [PDF]

open access: yes, 2017
Typical poly-p-phenylene wires are characterized by strong interchromophoric electronic coupling with redox and optical properties being highly length-dependent.
Chebny, Vincent J.   +3 more
core   +5 more sources

Heterocyclic Crown Ethers with Potential Biological and Pharmacological Properties: From Synthesis to Applications

open access: yesApplied Sciences, 2022
Cyclic organic compounds with several ether linkages in their structure are of much concern in our daily life applications. Crown ethers (CEs) are generally heterocyclic and extremely versatile compounds exhibiting higher binding affinity.
Faiz Ullah   +10 more
doaj   +1 more source

Identification and quantitation of lipid-bound short-chain diols

open access: yesJournal of Lipid Research, 1973
Procedures are described for the hydrolysis of neutral lipid fractions containing long-chain esters and alk-1-enyl ethers of short-chain diols, and for the identification and quantitation of the constituent diols as long-chain cyclic acetals using gas ...
E. Schupp, W.J. Baumann
doaj   +1 more source

Elusiveness of bishomoaromaticity in anionic systems: the bicyclo[3.2.1]octa-3,6-dien-2-yl anion [PDF]

open access: yes, 1981
This article does not have an ...
Chandrasekhar, Jayaraman   +3 more
core   +1 more source

Monotelechelic Poly(oxa)norbornenes by Ring-Opening Metathesis Polymerization Using Direct End-Capping and Cross-Metathesis [PDF]

open access: yes, 2010
Two different methodologies for the synthesis of monotelechelic poly(oxa)norbornenes prepared by living ring-opening metathesis polymerization (ROMP) are presented.
Grubbs, Robert H., Matson, John B.
core   +2 more sources

Development of Sustainable MgO–C Refractories Using MgO–C Recyclates and a Novel Eco‐Friendly Fructose–Tannin Binder Crosslinked With Citric Acid

open access: yesAdvanced Engineering Materials, EarlyView.
This study develops sustainable MgO–C refractories using recycled materials and eco‐friendly fructose–tannin binders. The enhanced performance of citric acid as a cross‐linker and functional additives on mechanical and thermomechanical properties was examined. Characterization included strength tests, immersion trials, and microstructural and inclusion
Dinesh K. Gunasekar   +7 more
wiley   +1 more source

Nickel-Catalyzed Carbonylative Synthesis of Functionalized Alkyl Iodides

open access: yesiScience, 2018
Summary: Functionalized alkyl iodides are important compounds in organic chemistry and biology. In this communication, we developed an interesting nickel-catalyzed carbonylative synthesis of functionalized alkyl iodides from aryl iodides and ethers. With
Jin-Bao Peng   +5 more
doaj   +1 more source

Amphiphilic Polyfluorinated Amino Ethers from Cyclic Sulfamidates

open access: yesThe Journal of Organic Chemistry, 2022
Regioselective ring opening of cyclic sulfamidates was achieved by means of nucleophilic polyfluorinated alkoxides to access achiral and chiral β- and γ-ORF amines and α-amino esters. Subsequent transformations provide free amines ready for incorporation into bioactive substances through amide bond formation or nucleophilic aromatic substitution.
Marie, Nicolas   +2 more
openaire   +4 more sources

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