1: 1) NaBH4, Pd(PPh3)4, 2) H2 / 2) Pd/C 2: 83 percent / HCl / H2O; dioxane / conditions of Bobek and Farkas 3: 68 percent / benzene / 3 h / Heating 4: Vorbrueggen coupling 5: NH3 / methanol View Scheme