1: methanol / 1 h / Heating 2: H2 / 10percent Pd/C / tetrahydrofuran / 4 h / 760 Torr 3: pyridine, DMAP / tetrahydrofuran / 1 h View Scheme

1: Cl2, I2 / acetic acid / Heating 2: methanol / 1 h / Heating 3: H2 / 10percent Pd/C / tetrahydrofuran / 4 h / 760 Torr 4: pyridine, DMAP / tetrahydrofuran / 1 h View Scheme

1: H2 / 10percent Pd/C / tetrahydrofuran / 4 h / 760 Torr 2: pyridine, DMAP / tetrahydrofuran / 1 h View Scheme

pyridine; 4-(N,N-dimethlyamino)pyridine in tetrahydrofuran 1 h;