The Nazarov cyclization involves the thermal or Lewis acid-catalyzed electrocyclization of an allenyl vinyl ketone. This reaction forms an oxyallyl cation intermediate, which is a highly reactive species.
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tert-butyl 2-((2-methyl-3-oxo-5-phenylcyclopent-1-enyl)methyl)-1H-pyrrole-1-carboxylate
(E)-dimethyl 2-(3-(1, 3-dioxolan-2-yl)propyl)-2-(hex-4-en-2-ynyl)malonate
N-(3-aminopropyl)-4-methylbenzenesulfonamide
