An unprecedented acid-promoted structural reorganization of pull–pull alkylidenecyclobutanes into three-substituted γ-butyrolactones, in moderate-to-high yields, via a ring closurering contraction followed by intramolecular ring opening cyclization is described.
Acid‐Promoted Structural Reorganization of Pull–Pull Alkylidenecyclobutanes: A Cascade Synthesis of Three‐Substituted γ‐Butyrolactones
Uras, Mauro;Barranco, Stefano;Frongia, Angelo
2025-01-01
Abstract
An unprecedented acid-promoted structural reorganization of pull–pull alkylidenecyclobutanes into three-substituted γ-butyrolactones, in moderate-to-high yields, via a ring closurering contraction followed by intramolecular ring opening cyclization is described.
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Eur J Org Chem - 2025 - Uras - Acid‐Promoted Structural Reorganization of Pull Pull Alkylidenecyclobutanes A Cascade (2).pdf
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