反应详情

To a solution of tert-butyl 3-cyano-4-(2-(2-hydroxyethoxy)ethyl)piperazine-1-carboxylate, prepared as described in the previous step, (9.9 g, 33.1 mmol) in methanol (20 mL) was added Raney Ni (15 g). The reaction solution was stirred at room temperature overnight under hydrogen atmosphere (50 psi). The mixture was filtered and concentrated to provide the product, which was used in the next step without additional purification.

1. filtrationThe mixture was filtered
2. concentrationconcentrated
3. customto provide the product, which
4. customwas used in the next step without additional purification