1: 85 percent / LiAlH4 / tetrahydrofuran 2: 94 percent / TsOH / benzene 3: BH3*SMe2, PCC / CH2Cl2 4: 95 percent / NH2OH*HCl, NaOAc / ethanol View Scheme

1: 94 percent / TsOH / benzene 2: BH3*SMe2, PCC / CH2Cl2 3: 95 percent / NH2OH*HCl, NaOAc / ethanol View Scheme

1: 67 percent / NaOCl, Et3N / H2O; CH2Cl2 / 10 h 2: 71 percent / H2 / Raney Ni View Scheme