1: 1.) acetic acid, NaNO2 / 1.) H2O, 0 deg C, 2.) 22 deg C, 18 h 2: 1.) phenylselenyl chloride, 2.) H2O2 / 1.) ethyl acetate, 23 deg C, 3 h, 2.) 1 h 3: 100 percent / LiAlH4 / diethyl ether; tetrahydrofuran / 0.75 h / 0 °C 4: 87 percent / NH3, Li / tetrahydrofuran / 0.75 h / -78 °C 5: HCl / H2O; methanol / 0.33 h / Heating View Scheme

Multi-step reaction with 3 steps 1: 1.) acetic acid, NaNO2 / 1.) H2O, 0 deg C, 2.) 22 deg C, 18 h2: 1.) phenylselenyl chloride, 2.) H2O2 / 1.) ethyl acetate, 23 deg C, 3 h, 2.) 1 h3: 100 percent / LiAlH4 / diethyl ether; tetrahydrofuran / 0.75 h / 0 °C