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Synthesis of chiral spirocyclopropanepenicillanates via [2+1] annulation of 6-alkylidenepenicillanates and sulfur ylides

Authors: João Gonçalves; Ricardo Carvalho; Jéssica Macedo; Paloma Gonçalves; Inês Bártolo; Américo Alves; José Paixão; Nuno Taveira; Teresa Pinho e Melo

Ref.: J. Org. Chem. accepted for publication (2025)