Results 61 to 70 of about 4,192 (189)

2,3‐Dichloro‐5,6‐Dicyano‐1,4‐Benzoquinone (DDQ)‐Mediated CC Bond Formation: Redox Strategies from Stoichiometric to Catalytic Systems

open access: yesChemistryOpen, Volume 15, Issue 4, April 2026.
2,3‐Dichloro‐5,6‐dicyano‐1,4‐benzoquinone serves as a versatile oxidant and redox catalyst for CC bond formation through hydride abstraction or single‐electron transfer. Stoichiometric and catalytic systems enable benzylic, allylic, and aromatic CH activation under mild, metal‐free conditions, providing sustainable routes to complex and bioactive ...
Dohoon Cha, Sun‐Joon Min
wiley   +1 more source

Studies in Bicyclic Compounds [PDF]

open access: yes, 1967
Part I : Synthetic approaches to allohimachalol 2-(gamma-formylbutyl )-2,6,6-trimethylcycloheptanone was synthesised in six steps from tetrahydroeucarvone.
Wall, Richard Terence
core  

2-Azabicyclo[4.2.0]octane derivatives: Stereoselective photochemical Synthesis and Chemical Reactivity

open access: yes, 1992
Photochemical addition of acrylonitrile to 1,4-dihydropyridines 1 and 2 followed by catalytic hydrogenation of the products gave trans-8- and trans-7-cyano-cis-2-azabicyclo[4.2.0]octane-6-carboxylates 6a, b and 8a, b; the corresponding cis 7b, 9 and ...
Donati, Donato   +3 more
core   +1 more source

From Design to Bioactivity: 2‐Benzoylpyridine 4‐(bicyclo[2.2.1]hept‐2‐yl)thiosemicarbazone and Its 3d Metal Coordination Compounds

open access: yesChemistryOpen, Volume 15, Issue 4, April 2026.
The new 2‐benzoylpyridine 4‐(bicyclo[2.2.1]hept‐2‐yl)thiosemicarbazone (HL) and its copper(II), nickel(II), cobalt(III), and iron(III) coordination compounds [Cu(L)Cl] (1), [Cu(L)NO3] (2), {[Cu(L)(Cl2CHCOO)]}n (3), [Ni(HL)2](NO3)2 (4), [Fe(L)2]NO3 (5), [Co(L)2]NO3 (6) were obtained.
Ianina Graur   +6 more
wiley   +1 more source

Formation of 3-azabicyclo[3.3.1]non-3-enes: Imino amides vs. imino alkenes

open access: yes, 2014
An effective method for synthesising alkaloid-like compounds containing the 3-azabicyclo[3.3.1]non-3-ene core structure was successfully carried out in a stereoselective manner via the bridged-Ritter reactions.
Williams, SG   +6 more
core   +1 more source

Design and synthesis of 6-substituted amino-4-oxa-1-azabicyclo[3,2,0]heptan-7-one derivatives as cysteine protease inhibitors

open access: yes, 2002
A series of 6-substituted amino-4-oxa-1-azabicyclo[3,2,0]heptan-7-one compounds was designed and synthesized as a new class of inhibitors for cysteine proteases cathepsins B, L, K, and S.
Kaleta, Jadwiga   +6 more
core   +1 more source

Synthesis and antiprotozoal activities of new 3-azabicyclo[3.2.2]nonanes

open access: yes, 2015
Some antimalarial agents in use typically bear basic side chains as ligands. Such ligands were attached to the amino substituent of a bridgehead atom of already antiprotozoal active 3-azabicyclo[3.2.2]nonanes.
Faist, Johanna   +8 more
core   +1 more source

Radical Retrosynthesis of Natural Products Enabled by Iron‐Based Reductive Olefin Coupling

open access: yesAngewandte Chemie Novit, Volume 2, Issue 1, March 2026.
This review highlights iron‐catalyzed reductive olefin coupling (ROC)—a strategy for C─C bond formation driven by metal‐hydride hydrogen atom transfer (MHAT)—as a key tool in natural products synthesis. This review surveys dozens of total syntheses employing ROC‐based strategies, highlighting its power to forge strained rings, quaternary centers, and ...
Griffin L. Barnes   +2 more
wiley   +1 more source

Synthesis of Analogues of Epibatidine based on the 2-azabicyclo[2.2.1]heptane system

open access: yes, 2018
Epibatidine (exo-2-(6-chloro-3-pyridyl)-7-azabicyclo[2.2.1]heptane) is an alkaloid isolated from the skin of the Ecuadorian poison frog. It has been known since 1992 and has high binding affinity for nicotinic acetylcholine receptors.
Huda Ismail Al-Rubaye (7773863)
core   +1 more source

Synthesis of Nucleosides and Related Compounds. XXII. Carbocyclic Analogues of Thymidine and Related Compounds from 2-Azabicyclo(2.2.1)hept-5-en-3-ones.

open access: yesChemical and Pharmaceutical Bulletin, 1991
Reductive amido bond cleavage reaction, previously elaborated by our laboratory for the synthesis of carbocyclic ribothymidine from readily available 2-azabicyclo[2.2.1]hept-5-en-3-one, was successfully applied to the synthesis of carbocyclic analogues of thymidine and related compounds.
KATAGIRI, Nobuya   +3 more
openaire   +2 more sources

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