Stereoselective zirconocene-mediated ring transformation of 2-vinylheterocycles to vinylcarbocycles~1

摘要

Stereoselective ring transformation of 2-vinylheterocycles to vinylcarbocycles was efficiently carried out by the use of a zirconocene equivalent ("Cp_2Zr").The transformation proceeded through an intramolecular allylation of Z-allylic zirconocene species to teh epoxide or aziridine ring.