1.1: 7.49 g / aq. H2SO4 / acetone 2.1: NaBH4; LiCl / 1,2-dimethoxy-ethane; ethanol / 6 h / -15 - -5 °C 2.2: 97 percent / conc. HCl / 1,2-dimethoxy-ethane; ethanol / 0.5 h View Scheme

1.1: 7.49 g / aq. H2SO4 / acetone 2.1: NaBH4; LiCl / 1,2-dimethoxy-ethane; ethanol / 6 h / -15 - -5 °C 2.2: 97 percent / conc. HCl / 1,2-dimethoxy-ethane; ethanol / 0.5 h 3.1: 81 percent / benzoyl peroxide / tetrahydrofuran View Scheme

sulfuric acid in acetone