1: 87 percent / 25percent NaOMe / methanol / 3.5 h 2: t-BuOK / tetrahydrofuran / 63 h / Ambient temperature 3: 70 percent / 0.813M BF3*Et2O / CH2Cl2 / 2 h 4: 77 percent / H2 / 5 percent Pd/C / ethyl acetate / 735.5 Torr View Scheme