Results 21 to 30 of about 1,676 (183)

Synthesis of phenanthridines via palladium-catalyzed picolinamide-directed sequential C–H functionalization

open access: yesBeilstein Journal of Organic Chemistry, 2013
We report a new synthesis of phenanthridines based on palladium-catalyzed picolinamide-directed sequential C–H functionalization reactions starting from readily available benzylamine and aryl iodide precursors.
Ryan Pearson   +4 more
doaj   +1 more source

The phytogenic feed additive Sangrovit modulates dextran sulfate sodium-induced colitis in rats

open access: yesVeterinární Medicína, 2010
The alkaloids of Macleaya cordata (Papaveracae) are active components of the phytogenic feed additive Sangrovit. The present study was conducted to evaluate the effects of Sangrovit on dextran sulfate sodium (DSS)-induced colitis using rats as an ...
E. Vrublova   +9 more
doaj   +1 more source

Metal-Free Nitrogenation of 2‑Acetylbiphenyls: Expeditious Synthesis of Phenanthridines

open access: yes, 2015
An intermolecular nitrogenation reaction toward the synthesis of phenanthridines has been developed. This metal-free protocol provides a novel nitrogen-incorporation transformation using azides as the nitrogen source.
Conghui Tang (1608868)   +2 more
core   +1 more source

Photochemical synthesis of phenanthridines: exploring fluoro and protected catechol substitution

open access: yes, 2013
Substituted phenanthridines, such as the natural product trispheridine, have been accessed by the practical photochemical cyclization of N-benzylanilines. Functionalities, with a focus on fluoro substituents and protected catechols, are well tolerated on
Anna M. Linsenmeier   +5 more
core   +1 more source

Thermal vs. Visible-Light Photoredox-Catalyzed Cascade Radical Cyclization Involving SO2 Fixation to Access 6-Alkylsulfonylmethyl Phenanthridines [PDF]

open access: yes, 2023
Convenient access to 6-alkylsulfonylmethyl phenanthridines has been demonstrated both under thermal and visible-light photoredox-catalyzed conditions.
Tonish Kumar, Sahu   +4 more
core   +2 more sources

6‑Perfluoroalkylated Phenanthridines via Radical Perfluoroalkylation of Isonitriles

open access: yes, 2016
A simple and efficient approach to 6-perfluoroalkylated phenanthridines starting with readily prepared isonitriles and commercially available cheap perfluoroalkyl iodides as perfluoroalkyl radical precursors is described.
Bo Zhang (6559), Armido Studer (1350438)
core   +1 more source

From dioxime oxalates to dihydropyrroles and phenanthridines via iminyl radicals.

open access: yes, 2008
Dioxime oxalates are useful precursors for the clean generation of iminyl radicals by sensitised UV photolysis and can be adapted for serviceable preparations of 3,4-dihydro-2H-pyrroles and ...
SCANLAN, EOIN
core   +2 more sources

Recent Advances in Virus–Host Interactions, Antiviral Bioactive Compounds, and Breeding for Disease Resistance of Porcine Epidemic Diarrhea Virus

open access: yesAnimal Research and One Health, EarlyView.
Basic research on the PEDV infection cycle and virus–host interactions advances the development of anti‐PEDV drugs and disease‐resistant breeding and helps strengthen disease prevention and control while reducing economic losses in the swine industry.
Heyong Wu   +8 more
wiley   +1 more source

Convergent synthesis of 6-substituted phenanthridines via anionic ring closure

open access: yes, 2002
Chemical equation presented The addition of organometallic derivatives to the cyano group of 2-(2-fluorophenyl)benzonitrile followed by intramolecular nucleophilic substitution produces 6-substituted phenanthridines.
Kristensen, Jesper Langgaard   +3 more
core   +1 more source

Pd/C‐Catalyzed Denitrogenative Dehydrogenation of Primary Azides to Nitriles in Batch and Continuous Flow

open access: yesAdvanced Synthesis &Catalysis, Volume 368, Issue 20, 16 October 2026.
A practical Pd/C‐catalyzed conversion of primary azides to nitriles was investigated under batch and continuous‐flow conditions. This transformation proceeds via net denitrogenative dehydrogenation without an external carbon source. The addition of methyl acrylate or styrene suppresses the formation of reductive byproducts, providing selective access ...
Naoya Sakurada   +8 more
wiley   +1 more source

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