反应详情

A solution of hydrochloric acid (12N, 1.2 mL) in 1,4-dioxane (2.4 mL) is added to 4-isobutylpiperidine-1,4-dicarboxylic acid monotertbutyl ester (0.7 g, 0.0025 mol) and stirred at room temperature for 1 hr. The reaction mixture is concentrated under reduced pressure and the residue is treated with saturated solution of sodium bicarbonate (0.5 mL) to adjust the pH to ˜7. It is again concentrate under reduced pressure to get crude 4-isobutylpiperidine-4-carboxylic acid.

1. concentrationThe reaction mixture is concentrated under reduced pressure
2. additionthe residue is treated with saturated solution of sodium bicarbonate (0.5 mL)
3. concentrationIt is again concentrate under reduced pressure