Mechanism of Intramolecular Cyclization of Quaternary Ammonium Salts Containing a β,γ-Unsaturated Fragment and Various π4 Fragments
摘要
Abstract
The review considers the mechanism of intramolecular cyclization (intramolecular Diels–Alder reaction) of quaternary ammonium salts simultaneously containing β,γ-unsaturated and various enyne fragments.