tert-Butanol → 1-Benzyl-4-(N-Boc-amino)piperidine

Participants

Reaction Steps

1-Benzylpiperidin-4-ylamine (3 g, 15.8 mmol) as a starting material was dissolved in 1M aqueous sodium hydroxide solution (35.8 ml) and t-butanol (32 ml) in a 250 ml vessel, and t-butyl-dicarbonate ((t-Boc)2O; 3.79 g, 17.38 mmol) was added thereto while stirring. The resulting mixture was reacted at room temperature for 12 hrs. After the completion of reaction, the reaction mixture was extracted with ethyl acetate twice. The organic layer was separated, washed with 0.1N hydrochloric acid aqueous solution and brine in order, dried over anhydrous sodium sulfate, filtered, and concentrated under reduced pressure. The residue thus obtained was subjected to a silica gel column chromatography to obtain 3.801 g of the title compound as a white solid (82.8%).

Provenance & Evidence