1: 67 percent / tetrahydrofuran / 4 h 2: 46 percent / H2 / 50percent aq. 5percent Pd/C / ethanol / 6 h / 3192 Torr 3: Et3N / acetonitrile / 5 h / Heating 4: 35percent HCl / 0.25 h / Ambient temperature View Scheme

1: 80 percent / lithium aluminium hydride / tetrahydrofuran / 17 h / Heating 2: 67 percent / tetrahydrofuran / 4 h 3: 46 percent / H2 / 50percent aq. 5percent Pd/C / ethanol / 6 h / 3192 Torr 4: Et3N / acetonitrile / 5 h / Heating 5: 35percent HCl / 0.25 h / Ambient temperature View Scheme

1: 46 percent / H2 / 50percent aq. 5percent Pd/C / ethanol / 6 h / 3192 Torr 2: Et3N / acetonitrile / 5 h / Heating 3: 35percent HCl / 0.25 h / Ambient temperature View Scheme

1: Et3N / acetonitrile / 5 h / Heating 2: 35percent HCl / 0.25 h / Ambient temperature View Scheme

1: Et3N / acetonitrile / 5 h / Heating 2: 35percent HCl / 0.25 h / Ambient temperature View Scheme

1: 90 percent / 35percent HCl / 2.5 h / 110 °C 2: Et3N / acetonitrile / 5 h / Heating 3: 35percent HCl / 0.25 h / Ambient temperature View Scheme