hydrogenchloride; sodium hydroxide; boron tribromide in methanol; dichloromethane

1: 1.) Mg / 1.) ether, reflux, 0.5 h, 2.) ether, reflux, 2 h 2: 40 percent / TiCl3, LiAlH4 / 1,2-dimethoxy-ethane / 16 h / Heating 3: 1.) BBr3, 2.) 2N NaOH / 1.) CH2Cl2, RT, 4 h, 2.) CH2Cl2, MeOH View Scheme

1: 40 percent / TiCl3, LiAlH4 / 1,2-dimethoxy-ethane / 16 h / Heating 2: 1.) BBr3, 2.) 2N NaOH / 1.) CH2Cl2, RT, 4 h, 2.) CH2Cl2, MeOH View Scheme