Palladium-Catalyzed Ring Opening of Cyclopropane-Appended Spirotricyclic Olefins with Soft Nucleophiles and Organoboronic Acids: Facile Synthesis of Functionalized Spiro[2.4]heptenes
Palladium-catalyzed ring-opening acylation of cyclopropenones with organoboronic acids (aryl and vinylboronic acids) at room temperature has been developed to synthesise α,β-diaryl unsaturated ketones with good yields and excellent stereospecificity.