Triethylamine → 1-{2-[{6-[(tert-Butoxycarbonyl)amino]hexanoyl}(methyl)amino]ethyl}piperidin-4-yl biphenyl-2-ylcarbamate

Participants

Reaction Steps

6-[(tert-Butoxycarbonyl)amino]hexanoic acid (720 mg, 3.11 mmol) was dissolved in methylene chloride (14 mL), triethylamine (0.590 mL, 4.25 mmol) and pivaloyl chloride (0.418 mL, 3.40 mmol) were added under ice cooling, and the mixture was stirred at room temperature for 15 minutes. 1-[2-(Methylamino)ethyl]piperidin-4-yl biphenyl-2-ylcarbamate (1.00 g, 2.83 mmol) was added, and the mixture was stirred at room temperature for 2 hours. The solvent was evaporated under reduced pressure, and the resulting residue was purified by NH silica gel column chromatography (hexane:ethyl acetate=1:1→4 0:100, v/v) to give the title compound (1.59 g; yield, 99%) as a white solid.

Provenance & Evidence