Diastereoselective construction of 7-methylenebicyclo[3.2.1]oct-3-en-2-one derivatives by palladium-catalyzed cyclization of propargylic acetates with 2-oxocyclohex-3-enecarboxylates.

The reaction of propargylic acetates with 2-oxocyclohex-3-enecarboxylates in the presence of a palladium catalyst is described. Substituted 7-methylenebicyclo[3.2.