1-Methylpiperazine → HCID 58742342, compound

Participants

Reaction Steps

To a solution of the compound of Example 70 (25 mg, 0.07 mmol) in dichloromethane (3 mL) was added hydroxybenztriazole (10 mg, 0.073 mmol), 1-methylpiperazine (0.008 mL, 0.073 mmol), diisopropylethylamine (0.017 mL, 0.1 mmol) and 1-[3-(dimethylamino)propyl]-3-ethylcarbodimide hydrochloride (14 mg, 0.073 mmol). The mixture was stirred at room temperature for 4 days and then quenched with saturated aqueous ammonium chloride solution. After the mixture was diluted with water, it was extracted with dichloromethane. The organic layer was dried over magnesium sulfate and concentrated. The title compound was isolated by flash chromatography eluting with a gradient of 30% ethyl acetate in hexane to 100% ethyl acetate. Mass spectrum (m/e) 493 (M++1).

Provenance & Evidence