%A P Wipf %A JK Jung %J Chemical Reviews %T Nucleophilic Additions to 4,4-Disubstituted 2,5-Cyclohexadienones: Can Dipole Effects Control Facial Selectivity? %N 5 %P 1469 - 1480 %V 99 %D 1999 %R 10.1021/cr9803838 %L pittir23368