反应详情

Lithium aluminum hydride (1.94 g, 51.2 mmol) was added to a THF (100 mL) solution of 4-amino-1-benzylpiperidine-4-carboxylic acid [Albert, J. S. et al. J. Med. Chem. 2002, 45, (18), 3972-3983] (390) (3.00 g, 12.8 mmol). The resulting mixture was stirred for 1.5 h at reflux. The reaction was cooled to room temperature and the following additions were made slowly: 2 mL of water followed by 2 mL of 1 N NaOH, and finally 4 mL of water. The mixture was then filtered and concentrated to give compound 391 as a thick clear oil (2.22 g, 79% yield). The material was used in the next step without further purification. LCMS-ESI (POS), M/Z, M+1: Found 221, Calculated 221.

1. temperatureat reflux
2. filtrationThe mixture was then filtered
3. concentrationconcentrated