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A novel approach to substituted 2H-azirines
Alan R Katritzky1, Mingyi Wang, Chavon R Wilkerson
1Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, FL 32611-7200, USA. katritzky@chem.ufl.edu
The Journal of Organic Chemistry
|November 8, 2003
Summary
Researchers synthesized novel 2H-azirine derivatives using benzotriazolyl azirines. These compounds were further functionalized via reactions with organometallic reagents and nucleophiles, yielding diverse azirine structures.
Area of Science:
- Organic Chemistry
- Heterocyclic Chemistry
Background:
- Azirines are three-membered heterocyclic compounds containing a nitrogen atom.
- 2H-azirines are a specific class of azirines with a double bond between the carbon atoms.
Purpose of the Study:
- To synthesize novel 2-(benzotriazol-1-yl)-2H-azirine derivatives.
- To explore the reactivity of these azirines with organometallic reagents and nucleophiles.
- To obtain new functionalized 2H-azirine compounds.
Main Methods:
- Treatment of oximes with tosyl chloride and potassium hydroxide to form 2-(benzotriazol-1-yl)-2H-azirines.
- Reaction of these azirines with benzylmagnesium bromide or 4-methylbenzylmagnesium bromide in the presence of zinc chloride.
- Nucleophilic substitution reactions with potassium phthalimide and sodium salt of benzenethiol.
Main Results:
- Synthesis of 2-(benzotriazol-1-yl)-2H-azirines (4a-c) from oximes (2a-c).
- Formation of 2-benzyl-2H-azirines (5a-f) through reactions with Grignard reagents.
- Generation of novel 2H-azirines (6a-c and 7) via reactions with potassium phthalimide and sodium benzenethiolate in good yields.
Conclusions:
- The study successfully demonstrates a synthetic route to novel 2H-azirine derivatives.
- The developed methods allow for diverse functionalization of the azirine core.
- The synthesized compounds represent new heterocyclic structures with potential applications.