1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → HCID 59347370, compound

Participants

Reaction Steps

1-(piperazin-1-yl)piperidin-2-one (0.44 g) obtained in Example 8b), (2S)-3-[(6-chloronaphthalen-2-yl)sulfony]-2-hydroxypropionic acid (0.76 g), HOBt (0.37 g) and triethylamine (0.34 mL) were dissolved in DMF (10 mL), WSC (0.46 g) was added thereto, and the mixture was stirred at room temperature for 15 hours. The reaction mixture was concentrated under reduced pressure, and the residue was diluted with an aqueous sodium bicarbonate solution, and extracted with dichloromethane. The extract was washed with an aqueous sodium bicarbonate solution and dried over sodium sulfate, and the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate to ethyl acetate/methanol=10/1), and recrystallized form ethyl acetate to obtain the title compound (0.32 g, 28%) as a colorless powder.

Provenance & Evidence