Gold-Catalysed Rearrangement of Alkynyl Aziridines
Author Information
Author(s): Paul W. Davies, Nicolas Martin, Neil Spencer, F. Dean Toste
Primary Institution: University of Birmingham
Hypothesis
Can isotopic labelling validate the proposed 1,2-aryl shift mechanism in the gold-catalysed cycloisomerisation of alkynyl aziridines?
Conclusion
The study reveals two distinct pathways for the formation of 2,4-disubstituted pyrroles in gold-catalysed reactions.
Supporting Evidence
- The study identified two isotopomers of the 2,4-disubstituted pyrrole product.
- The results suggest that both a 1,2-aryl shift and a 1,2-(metal-stabilised)-vinyl shift are involved in the reaction.
- Different substituents on the alkyne affect the pathway taken during the reaction.
Takeaway
Scientists used special labels to track how certain chemicals change during a reaction, helping them understand how to make new types of molecules.
Methodology
Isotopic labelling studies were performed using 13C and deuterium labels to investigate the reaction mechanism.
Limitations
The reaction of deuterated aziridine was less clean than its non-deuterated analogue, leading to unexpected results.
Digital Object Identifier (DOI)
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