Simple Silver Salts and Palladium Bis(<i>N</i>-heterocyclic carbene) Complexes As Complementary Catalysts for the Nazarov Cyclization SubramaniumSri S. HandaSachin MirandaAnthea J. SlaughterLeGrande M. 2011 Simple silver salts and dicationic palladium bis(<i>N</i>-heterocyclic carbene) complexes were found to be effective and complementary catalysts for Nazarov cyclizations of divinyl β-keto esters. A sterically hindered palladium bis(NHC) catalyst provided remarkable endo:exo selectivity in cyclizations of cyclohexenyl β-keto esters, whereas AgSbF<sub>6</sub> gave improved yields with electron-deficient substrates. The high activities observed with silver salts are significant, given their widespread use as additives in catalytic Nazarov reactions.