1: 41 percent / DCC / acetonitrile / 1.) 0 deg C, 0.5 h, 2.) room temperature, 5 h 2: Et3N / acetonitrile / 3.5 h / Ambient temperature 3: H2 / Pd/C / tetrahydrofuran; H2O View Scheme

1: 41 percent / DCC / acetonitrile / 1.) 0 deg C, 0.5 h, 2.) room temperature, 5 h 2: 95.6 percent / Et3N / acetonitrile / 2.5 h / Ambient temperature 3: tetrahydrofuran; H2O / 2 h 4: H2 / 5percent Pd/C / tetrahydrofuran; H2O / 3 h / 760 Torr / Ambient temperature View Scheme