First Synthesis of Functionalized Benzonitriles by Formal [3+3] Cyclocondensations of 1,3-Bis(silyloxy)buta-1,3-dienes - Fatunsin, Olumide; Shkoor, Mohanad; Riahi, Abdolmajid; Dede, Rüdiger; Reinke, Helmut; Langer, Peter (Synlett, 2009)