Organocatalytic Asymmetric Wittig Reactions: Generation of Enantioenriched Axially Chiral Olefins Breaking a Symmetry Plane - Gramigna, Lucia; Duce, Sara; Filippini, Giacomo; Fochi, Mariafrancesca; Franchini, Mauro Comes; Bernardi, Luca (Synlett, 2011)