Results 101 to 110 of about 7,313 (206)

Direct introduction of nitrogen and oxygen functionality with spatial control using copper catalysis. [PDF]

open access: yes, 2018
Synthetic chemists have spent considerable effort optimizing the synthesis of nitrogen and oxygen containing compounds through a number of methods; however, direct introduction of N- and O-functionality remains challenging.
Fisher, David J   +4 more
core  

BET & ELF Quantum Topological Analysis of Neutral 2-Aza-Cope Rearrangement of γ-Alkenyl Nitrones

open access: yesMolecules, 2017
The 2-Aza-Cope rearrangement of γ-alkenyl nitrones is a rare example of the neutral thermal 2-aza-Cope process that usually takes place with cationic species.
Pedro Merino   +3 more
doaj   +1 more source

Control of Diastereoselectivity in C=O/C=N Reductive Cyclizations Using an Intramolecularly Tethered Hydrazone [PDF]

open access: yes, 2005
Cyclic hydrazones are efficient ketyl radical acceptors in reductive coupling cyclizations mediated by samarium diiodide, affording cyclic amino alcohols with controlled stereochemistry at the new aminated stereocenter.
Chen, Ming   +2 more
core   +1 more source

Observation of superoxide production during catalysis of Bacillus subtilis oxalate decarboxylase at pH 4 [PDF]

open access: yes, 2015
This contribution describes the trapping of the hydroperoxyl radical at a pH of 4 during turnover of wild-type oxalate decarboxylase and its T165V mutant using the spin trap BMPO.
Angerhofer, Alexander   +5 more
core   +1 more source

Neuroprotection by Radical Avoidance: Search for Suitable Agents

open access: yesMolecules, 2009
Neurodegeneration is frequently associated with damage by free radicals. However, increases in reactive oxygen and nitrogen species, which may ultimately lead to neuronal cell death, do not necessarily reflect its primary cause, but can be a consequence ...
Rüdiger Hardeland
doaj   +1 more source

5,6-Dihydro-2H-pyran-3(4H)-on als Baustein zur Synthese pyrananellierter Heterocyclen [PDF]

open access: yes, 1984
Während 5,6-Dihydro-2H-pyran-3(4H)-on (3) sich mit ortho-substituierten Phenylcarbonylverbindungen nur in Einzelfällen regioselektiv zu pyrananellierten Heterocyclen umsetzt - z. B.
Eiden, Fritz, Wanner, Klaus Th.
core   +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  

Florida International University Magazine Fall 1996 [PDF]

open access: yes, 1994
Florida International University Magazine Fall 1996 Volume III, Number 1.
Florida International University Division of University Relations,
core  

Synthesis of a New Chiral Pyrrolidine

open access: yesMolecules, 2010
The synthesis of a new chiral pyrrolidine has been performed using 2,3-O-isopropylidene-D-erythronolactol as a suitable starting material.
Pilar García   +7 more
doaj   +1 more source

Szteránvázas vegyületek szintézise = Synthesis of Steroid Compounds [PDF]

open access: yes, 2007
Az érdeklődésünk 2003-2005 között a cisz C/D gyűrűs 3-metoxi-, illetve a 3-benziloxi-ösztra-17-on származékok felé fordult. A kívánt 13α-D-szeko-ösztron-aldehid előállítására a legjobbnak a 16-jódmetil származékok bizonyultak, amelyek a kívánt 13α-szeko ...
Magyar, Angéla Andrea   +4 more
core  

Home - About - Disclaimer - Privacy