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Updated: May 15, 2026

Preparation of Contiguous Bisaziridines for Regioselective Ring-Opening Reactions
Published on: July 28, 2022
Chemoselective allene aziridination via Ag(I) catalysis
Jared W Rigoli1, Cale D Weatherly, Brian T Vo
1Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA.
Silver(I) catalysts enable efficient allene aziridination, yielding valuable bicyclic methylene aziridines. This breakthrough overcomes previous limitations in synthesizing complex amine-containing molecules.
Area of Science:
- Organic Chemistry
- Catalysis
- Synthetic Methodology
Background:
- Allene aziridination is a key reaction for creating bicyclic methylene aziridine scaffolds.
- These scaffolds are precursors to complex amine-containing stereotriads.
- Previous methods using rhodium(II) catalysts suffered from poor chemoselectivity with homoallenic carbamates.
Purpose of the Study:
- To develop improved catalysts for allene aziridination.
- To enhance the scope and yield of bicyclic methylene aziridine synthesis.
- To overcome chemoselectivity issues associated with existing methods.
Main Methods:
- Investigation of silver(I) catalysts for allene aziridination.
- Reaction optimization using homoallenic carbamates.
- Characterization of the resulting bicyclic methylene aziridine products.
Main Results:
- Discovery of effective Ag(I) catalysts for allene aziridination.
- Significant improvement in the scope and yield of bicyclic methylene aziridines.
- Demonstration of enhanced chemoselectivity compared to rhodium(II) catalysts.
Conclusions:
- Silver(I) catalysis provides a superior method for allene aziridination.
- This approach expands the utility of bicyclic methylene aziridines in synthesis.
- The developed methodology facilitates access to complex amine-containing molecules.
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