Results 11 to 20 of about 45,058 (347)

Hexane-1,6-diammonium dinitrate [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2009
The hexane-1,6-diammonium cation of the title compound, C(6)H(18)N(2) (2+)·2NO(3) (-), lies across a crystallographic inversion centre and shows significant deviation from planarity in the hydro-carbon chain. This is evident from the torsion angle of -64.0°(2) along the N-C-C-C bond and thse torsion angle of -67.1°(2) along the C-C-C-C bonds.
Gert J. Kruger, Charmaine van Blerk
openaire   +4 more sources

Selective and reversible 1,3-dipolar cycloaddition of 6-aryl-1,5-diazabicyclo[3.1.0]hexanes with 1,3-diphenylprop-2-en-1-ones under microwave irradiation

open access: yesBeilstein Journal of Organic Chemistry, 2020
The first example of the cycloaddition of in situ-generated azomethine imine under microwave conditions is described. The reaction of 6-aryl-1,5-diazabicyclo[3.1.0]hexanes with 1,3-diphenylprop-2-en-1-ones proceeds regio- and stereoselectively giving ...
Alexander P. Molchanov   +3 more
doaj   +1 more source

Photooxidation of n-Hexanal in Air [PDF]

open access: yesMolecules, 2001
Dilute mixtures of hexanal in synthetic air (up to 100 ppm) were photolyzed with fluorescent UV lamps (275-380 nm) in air at 298 K. The main photooxidation products, identified and quantitatively analyzed by FTIR spectroscopy, were butene, CO, vinylalcohol and ethanal.
Tadić, Jovan   +2 more
openaire   +3 more sources

Effect of chlorination on positron binding to hydrocarbons: experiment and theory [PDF]

open access: yesPhys. Rev. A 104, 012813 (2021), 2021
Measured and calculated positron binding energies are presented for a range of hydrocarbons with up to six carbon atoms (viz., methane, acetylene, ethylene, ethane, propane, butane, and hexane) and their chlorinated counterparts. Both experiment and theory confirm the large effect that the chlorine atoms have on the positron binding energy and the ...
arxiv   +1 more source

Exploring the ring-closing metathesis for the construction of the solomonamide macrocyclic core: identification of bioactive precursors [PDF]

open access: yes, 2018
New synthetic strategies directed toward the novel cyclopeptides solomonamides have been explored utilizing an olefin metathesis as the key reaction.
Carrillo Fernández, Paloma   +7 more
core   +3 more sources

When Like Destabilizes Like: Inverted Solvent Effects in Apolar Nanoparticle Dispersions [PDF]

open access: yesACS Nano, 2020, 14, 5278-5287, 2023
We report on the colloidal stability of nanoparticles with alkanethiol shells in apolar solvents. Small angle X-ray scattering and molecular dynamics simulations were used to characterize the interaction between nanoparticles in linear alkane solvents ranging from hexane to hexadecane, including \SI{4}{\nano\meter} gold cores with hexadecanethiol ...
arxiv   +1 more source

Crystal structure of cis-7,8-dihydroxy-5,10,15,20-tetraphenylchlorin and its zinc(II)–ethylenediamine complex

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2022
The title chlorin, 2PhH2, hydrogen-bonded to dimethylaminopyridine (DMAP), C44H32N4O2·C7H10N2, and its corresponding zinc(II) complex, 2PhZn, axially coordinated to ethylenediamine (EDA), [Zn(C44H30N4O2)]·C2H8N2, were isolated and crystallized by ...
Nivedita Chaudhri   +2 more
doaj   +1 more source

Multitargeted Imidazoles: Potential Therapeutic Leads for Alzheimer's and Other Neurodegenerative Diseases [PDF]

open access: yes, 2017
Alzheimer’s disease (AD) is a complex, multifactorial disease in which different neuropathological mechanisms are likely involved, including those associated with pathological tau and Aβ species as well as neuroinflammation.
Ballatore, Carlo   +12 more
core   +5 more sources

Synthesis of bis-spirocyclic derivatives of 3-azabicyclo[3.1.0]hexane via cyclopropene cycloadditions to the stable azomethine ylide derived from Ruhemann's purple

open access: yesBeilstein Journal of Organic Chemistry, 2022
A reliable method for the synthesis of bis-spirocyclic derivatives of 3-azabicyclo[3.1.0]hexanes through the 1,3-dipolar cycloaddition (1,3-DC) reactions of cyclopropenes to the stable azomethine ylide – protonated form of Ruhemann's purple (PRP) has ...
Alexander S. Filatov   +4 more
doaj   +1 more source

Toward the total synthesis of spirastrellolide A. Part 3: Intelligence gathering and preparation of a ring-expanded analogue [PDF]

open access: yes, 2007
Different methods for the formation of the C.25–C.26 bond of spirastrellolide A (1) are evaluated that might qualify for the end game of the projected total synthesis, with emphasis on metathetic ways to forge the macrocyclic ...
Ceccon, J.   +5 more
core   +2 more sources

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