Platinum- and Palladium-Catalyzed Sequential Reactions: Regioselective Synthesis of 9-Fluorenylidenes from 9-Ethynylfluoren-9-yl Carboxylates and Furans - Miki, Koji; Senda, Yoshinori; Kowada, Toshiyuki; Ohe, Kouichi (Synlett, 2009)