反应详情

温度

70 °C

To a solution of tert-butyl 4-{4-[[1-(methoxycarbonyl)-3-methylbutoxy](phenyl)methyl]benzoyl}piperazine-1-carboxylate from step 3 (0.6 g, 1.1 mmol) in THF (6.5 mL) was added methanol (2.2 mL) and 1.0N aqueous potassium hydroxide solution (2.2 mL, 2.2 mmol). The mixture was heated at 70° C. for 20 minutes and then cooled down to room temperature. The crude mixture was evaporated under reduced pressure and co-evaporated twice with toluene. The solid residue obtained was used as such in the next step.

1. temperaturecooled down to room temperature
2. customThe crude mixture was evaporated under reduced pressure
3. customThe solid residue obtained