A new palladium-catalyzed domino alkyne insertion/C–H activation/decarboxylation sequence
has been developed, which provides an efficient approach for synthesizing a variety
of functionalized phenanthrenes in moderate to good yields. The method shows broad
substrate scope and good functional group tolerance by employing readily available
materials, including aryl iodides, internal alkynes, and o-bromobenzoic acids, as three-component coupling partners.
Key words
phenanthrenes - domino reaction - C–H activation - decarboxylation - palladium-catalyzed