1: 14 percent / POCl3 / chlorobenzene / 1.) -5 deg C, 2.) -5 deg C to room temperature 2: 97 percent / m-chloroperbenzoic acid / CH2Cl2 / Ambient temperature 3: hydrogen / Pd-C / tetrahydrofuran 4: 64 percent / ceric ammonium nitrate / acetonitrile / 0.08 h View Scheme

1: 14 percent / POCl3 / chlorobenzene / 1.) -5 deg C, 2.) -5 deg C to room temperature 2: 97 percent / m-chloroperbenzoic acid / CH2Cl2 / Ambient temperature 3: hydrogen / Pd-C / tetrahydrofuran View Scheme