1: lithium aluminium hydride 2: PBr3 / pyridine 4: 2N HCl / 0.05 h / 0 °C 6: 95 percent / diisobutylaluminium hydride / CH2Cl2 7: DMAP, Et3N / CH2Cl2 / 0.5 h / 0 °C 8: LiCl / dimethylformamide / 0.5 h / 0 °C 10: O2, rose bengal / CH2Cl2; methanol / -78 °C / Irradiation 11: 2N hydrochloric acid / tetrahydrofuran / 2 h / Ambient temperature 12: Irradiation View Scheme

1: LiAlH4 / diethyl ether 2: I2 / benzene View Scheme