Synthesis of 6-oxacyclopropa[a]indene derivatives starting from Baylis-Hillman adducts via Pd-mediated C(sp3)-H activation

We prepared novel 1-phenyl-1,6a-dihydro-6-oxacyclopropa[a]indene-1a-carboxylic acid derivatives starting from the Baylis-Hillman adducts via the palladium-mediated domino carbopalladation involving activation of C(sp3)-H bond.