反应详情

To a solution of (R)-tert-butyl 3-((S)-1-(2-(2-ethylphenoxy)phenyl)-1-hydroxy-5-methoxypentyl)piperidine-1-carboxylate (1.50 g, 3.01 mmol) in MeCN (50 mL), 2 N aq. HCl (50 mL) was added slowly at rt. The resulting solution was stirred at room temperature overnight, then basified to pH=10 with 10 N aq NaOH aq, and MeCN was removed under vacuum. The aqueous residue was extracted with CH2Cl2 (4×10 mL). The combined organic layers were washed with brine and dried over Na2SO4. The solvent was removed under vacuum to give (S)-1-(2-(2-ethylphenoxy)phenyl)-5-methoxy-1-((R)-piperidin-3-yl)pentan-1-ol (1.16 g, 97%) as a free amine. The crude product was used for next step without purification; MS m/z 398 (M+H+).

1. customwas removed under vacuum
2. extractionThe aqueous residue was extracted with CH2Cl2 (4×10 mL)
3. washThe combined organic layers were washed with brine
4. dry with materialdried over Na2SO4
5. customThe solvent was removed under vacuum