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Stereoselective palladium-catalyzed α-arylation of 3-aryl-1-indanones: an asymmetric synthesis of (+)-pauciflorol F.

Highly stereoselective, palladium-catalyzed α-arylation reactions of 3-aryl-1-indanones with aryl bromides are described. The use of sodium tert-butoxide as a base in this process is required to elevate the efficiencies and stereoselectivities of these reactions. The new methodology was successfully applied to a highly efficient route for the asymmetric synthesis of (+)-pauciflorol F.