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Martin, Matthew L; Wilson, Claire; Boyer, Alistair
Chemical communications (Cambridge, England), 04/2023, Letnik: 59, Številka: 33Journal Article
Unsaturated N 2 -sulfonyl amidines are transformed into valuable N-heterocyclic products when heated with BF 2 OTf. Mechanism studies suggest a domino 1,7-H shift, activating a C-H bond, followed by electrocylisation that results in stereodefined cyclic amidines. Heating unsaturated N 2 -sulfonyl amidines with BF 2 OTf in acetonitrile transformed them into stereodefined cyclic amidines. Investigating by-products of the reaction suggested a fascinating mechanism including 1,7-H shift and electrocyclisation.
