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: 67 percent / tetrahydrofuran / 4 h 2: 46 percent / H2 / 50percent aq. 5percent Pd/C / ethanol / 6 h / 3192 Torr View Scheme

With  lithium aluminium tetrahydride in  tetrahydrofuran 17 h;  Heating;