pyridine-SO3 complex; triethylamine in dichloromethane; dimethyl sulfoxide T=0°C; 2 h; Inert atmosphere;

Multi-step reaction with 6 steps 1: N-bromosuccinimide, benzoyl peroxide / benzene / 2 h / Heating2: MeONa, 2-nitropropane / methanol / 7 h / 20 - 40 °C3: 1.) t-BuOK / 1.) DMSO, RT, 20 min, 2.) DMSO, RT, 2 h4: AcCl / 2 h / Heating5: H2 / 5percent Pd/C / methanol / 1 h / Ambient temperature6: LiAlH4 / diethyl ether / 1 h / Heating