1-Hydroxybenzotriazole → HCID 57507775, compound

Participants

Reaction Steps

TEA (0.251 ml), 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (259 mg), 1-hydroxybenzotriazole (122 mg) and the above-produced compound [4-(aminocarbonyl)phenoxy]acetic acid (184 mg) were added to a DMF (5 ml) solution containing 3-pyridyl 1-piperidinecarboxylate dihydrochloride (252 mg) obtained in the method of Example 121, followed by stirring at room temperature for 5 hours. An aqueous saturated sodium hydrogencarbonate solution was added to the reaction solution, followed by extraction with chloroform. The organic layer was dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure, the residue was purified by silica gel column chromatography (eluent: chloroform:methanol=95:5 (v/v)), and the resulting solid was recrystallized from EtOAc/acetonitrile to obtain pyridin-3-yl 4-{[4-(aminocarbonyl)phenoxy]acetyl}piperidine-1-carboxylate (274 mg).

Provenance & Evidence