tert-Butyl 4-formylpiperidine-1-carboxylate → 4-{[(7-Hydroxy-1,2,3,4-tetrahydro-naphthalen-2-yl)-propyl-amino]-methyl}-piperidine-1-carboxylic acid tert-butyl ester

Participants

Reaction Steps

To a solution of 7-propylamino-5,6,7,8-tetrahydro-naphthalen-2-ol (937 mg, 4.6 mmol) and 4-formyl-piperidine-1-carboxylic acid tert-butyl ester (1.46 g, 6.9 mmol) in dichloroethane (40 mL) was added sodium triacetoxyborohydride (2.1 g, 10.12 mmol) in a single portion. The reaction was allowed to stir at room temperature for 24 h. The reaction was concentrated in vacuo and partitioned between EtOAc (75 mL) and 5% aq. KOH (75 mL). The organic layer was dried (MgSO4), filtered, and concentrated to afford 4-{[(7-hydroxy-1,2,3,4-tetrahydro-naphthalen-2-yl)-propyl-amino]-methyl}-piperidine-1-carboxylic acid tert-butyl ester (1.37 g).

Provenance & Evidence