1: LiBH4 / tetrahydrofuran / 3.5 h / Heating 2: HBr / acetic acid / 0.5 h / 100 °C 3: (i) Na, (ii) /BRN= 4047078/, (iii) aq. Ba(OH)2, MeOH View Scheme

1: LiBH4 / tetrahydrofuran / 3.5 h / Heating 2: HBr / acetic acid / 0.5 h / 100 °C 3: (i) Na, (ii) /BRN= 4047078/, (iii) aq. Ba(OH)2, MeOH 4: aq. NaOH / 0.5 h / 180 °C View Scheme