Results 61 to 70 of about 7,868 (205)

Eco-Friendly 1,3-Dipolar Cycloaddition Reactions on Graphene Quantum Dots in Natural Deep Eutectic Solvent

open access: yesNanomaterials, 2020
Due to their outstanding physicochemical properties, the next generation of the graphene family—graphene quantum dots (GQDs)—are at the cutting edge of nanotechnology development.
Salvatore V. Giofrè   +9 more
doaj   +1 more source

mechanistic investigation of the oxidation of N,a-diphenylnitrones by dichloramine-T in aqueous acetonitrile medium – a non-linear Hammett plot [PDF]

open access: yesJournal of the Serbian Chemical Society, 2009
The kinetics of oxidation of a number of meta- and para-substituted N,a-diphenylnitrones (nitrone) by dichloramine-T (DCT) was investigated in the presence of alkali in aqueous acetonitrile medium.
SUBRAMANIAN MANIVARMAN   +5 more
doaj  

Synthesis of tetrafluorinated piperidines from nitrones via a visible-light-promoted annelation reaction

open access: yesBeilstein Journal of Organic Chemistry, 2020
A method for the one-step construction of 3,3,4,4-tetrafluorinated piperidines from nitrones and readily accessible tetrafluorinated iodobromobutane is described.
Vyacheslav I. Supranovich   +2 more
doaj   +1 more source

(S)-N-[(1S,2S)-2-Benzylamino-1-(4-hydroxyphenyl)-3-methylbutyl]-1,1-dimethylethane-2-sulfinamide

open access: yesActa Crystallographica Section E, 2008
The title compound, C22H32N2O2S, was obtained by dehydroxylation and deacetylation of 4-{(1S,2S)-2-(benzylhydroxyamino)-3-methyl-1-[(S)-2-methylpropane-2-sulfinylamino]butyl}phenyl acetate, which was derived from reductive crosslinking of nitrone with N ...
Chun Shen
doaj   +1 more source

Cycloaddition of Benzyne with Alkoxy-Substituted Pyrroline-N-oxides­: Unexpected Rearrangement to an N-Phenylpyrrole

open access: yesSynOpen, 2018
Reaction of enantiopure 3,4-dialkoxy-pyrroline N-oxides with benzyne affords the expected tetrahydrobenzo[d]pyrrolo[1,2-b]isoxazoles along with an unexpected 2,3-disubstitued-N-phenyl-pyrrole derived from an unprecedented rearrangement of the adduct of ...
Franca M. Cordero   +3 more
doaj   +1 more source

Polyalkoxy Nitrones as Chiral Building Blocks in Asymmetric Synthesis

open access: yesMolecules, 1999
Optically active nitrones derived from both aldoses and dialdoses add metallated heterocycles in a stereocontrolled way depending on the nature of the Lewis acid used as a precomplexing agent of the nitrone.
Tomás Tejero, Pedro Merino
doaj   +1 more source

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