Copper-Mediated Reaction of Oxazirconacyclopentenes with But-2-ynedioates: A New Pathway for the Formation of α-Methylene-δ-lactone Derivatives
摘要:
Oxazirconacyclopentenes reacted with but-2-ynedioates in the presence of CuCl via tandem Michael addition/nucleophilic substitution to afford alpha-methylene-delta-lactone derivatives.