Acetic Acid → HCID 18770462, compound

Participants

Reaction Steps

Sodium cyanoborohydride (440 mg; 7.0 mmol) was added to a solution of [(1-tert-butoxycarbonyl-4-piperidinyl)-methyl]amine (1.5 g; 7.0 mmol) in methanol (30 ml) under ice cooling, and the mixture was stirred for 15 minutes. A solution of 1-tert-butoxycarbonyl-4-piperidine-carbaldehyde (1.4 g; 9.1 mmol) in methanol (5 ml) and acetic acid (0.40 ml; 7.0 mmol) were added to the resultant solution, and the mixture was stirred for 4 hours. After the ice bath was removed, the mixture was stirred at room temperature for 48 hours. The reaction mixture was concentrated under reduced pressure and the resultant concentrated residue was added to a saturated aqueous solution of sodium hydrogencarbonate to conduct extraction with chloroform. The organic layer was washed with saturated brine, dried over anhydrous sodium sulfate and then concentrated under reduced pressure. The resultant crude oil was purified by column chromatography on silica gel, thereby obtaining 1.83 g (yield: 63%) of N,N-bis[(1-tert-butoxycarbonyl-4-piperidinyl)methyl]amine as a colorless oil.

Provenance & Evidence