hydrogenchloride; triethylamine 1.) reflux, 15 h, 2.) reflux, 6 h; Yield given. Multistep reaction;

1: 1.) conc. aq. HCl, 2.) (C2H5)3N / 1.) reflux, 15 h, 2.) reflux, 6 h 2: 90 percent / LiAlH4 / tetrahydrofuran / 3 h / Heating 3: 43 percent / methanesulfonic acid / 18 h / 140 °C View Scheme

1: 1.) conc. aq. HCl, 2.) (C2H5)3N / 1.) reflux, 15 h, 2.) reflux, 6 h 2: 90 percent / LiAlH4 / tetrahydrofuran / 3 h / Heating View Scheme