A novel lithium iodide-promoted vinylcyclopropane-cyclopentene rearrangement: Efficient synthesis of bicyclo[3.3.0]oct-6-en-2-one, versatile building block for polycyclopentanoid natural products
Bicyclo[3.3.0]oct-6-en-2-one, a versatile buildingblock for polycyclopentanoid naturalproducts, has been efficiently synthesized from 2-methoxycarbonyl-2-cyclopentenone by employing palladium-catalyzed cyclopropanation and lithium iodide-promoted vinylcyclopropane rearrangement.