Silicon-Directed Regioselective [2+2] Cycloaddition of α-Alkoxybenzyne and Ketene Silyl Acetals - Hosoya, Takamitsu; Hamura, Toshiyuki; Kuriyama, Yokusu; Miyamoto, Makoto; Matsumoto, Takashi; Suzuki, Keisuke (Synlett, 2000)