1: 70 percent / N-bromosuccinimide, benzoyl peroxide / CCl4 / 3 h / Heating; Irradiation 2: 85 percent / 1,8-diazabicyclo<5.4.0>undec-7-ene / tetrahydrofuran / 0.17 h / -10 °C 3: 79 percent / BF3*Et2O / CH2Cl2 / 16 h / -78 deg C to r.t. 4: 91 percent / LiAlH4 / diethyl ether / 0.5 h / Heating 5: 78 percent / 5M H2SO4 / tetrahydrofuran / 2 h / Heating 6: 84 percent / 10percent Pd/C / bis-(2-methoxy-ethyl) ether / 6 h / Heating View Scheme

1: 85 percent / 1,8-diazabicyclo<5.4.0>undec-7-ene / tetrahydrofuran / 0.17 h / -10 °C 2: 79 percent / BF3*Et2O / CH2Cl2 / 16 h / -78 deg C to r.t. 3: 91 percent / LiAlH4 / diethyl ether / 0.5 h / Heating 4: 78 percent / 5M H2SO4 / tetrahydrofuran / 2 h / Heating 5: 84 percent / 10percent Pd/C / bis-(2-methoxy-ethyl) ether / 6 h / Heating View Scheme

1: 79 percent / BF3*Et2O / CH2Cl2 / 16 h / -78 deg C to r.t. 2: 91 percent / LiAlH4 / diethyl ether / 0.5 h / Heating 3: 78 percent / 5M H2SO4 / tetrahydrofuran / 2 h / Heating 4: 84 percent / 10percent Pd/C / bis-(2-methoxy-ethyl) ether / 6 h / Heating View Scheme

1: 35 percent / imidazole, trifluoroacetic anhydride / trifluoroacetic acid / 20 h / Heating 2: 12 percent / methanol / 96 h / Irradiation View Scheme

1: 35 percent / imidazole, trifluoroacetic anhydride / trifluoroacetic acid / 20 h / Heating 2: 12 percent / methanol / 96 h / Irradiation View Scheme

in methanol 96 h; Irradiation;