1: 90 percent / LiOH, H2O2 / tetrahydrofuran; H2O 2: 1.) SOCl2 / 1) benzene, 50 deg C, 50 min; 2) ether, rt, 1.5 h 3: 1.) LiAlH4, 2.) H2 / 2.) Pd/C / 1) ether, rt, overnight; 2) MeOH, 1 atm, rt, overnight View Scheme