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. 2024 Jun 19;7:139. doi: 10.1038/s42004-024-01221-3

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© The Author(s) 2024

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Fig. 3 — Azetinyllithium 1 is generated in situ by α-lithiation/elimination/α-lithiation, starting from commercially available 3-methoxyazetidines. The first steps are conducted in THF, but the best distereoselectivities are achieved by performing the last rearrangement step in Me-THF.