Acetic Anhydride → HCID 59540833, compound

Participants

Reaction Steps

A solution of (2-methyl-pyrrolidin-2-yl)-[2-(3,4,5-trimethoxy-phenyl)-5H-pyrrolo[2,3-b]pyrazin-7-yl]-methanone (8 mg, 0.02 mmol) in anhydrous dichloromethane (0.3 ml) was cooled to 0° C. and treated with acetic anhydride (2 mg, 0.02 mmol). The reaction mixture was stirred for 1 hour and then allowed to warm to room temperature and stir for 3 hours. The reaction mixture was partitioned between EtOAc/saturated aqueous NaHCO3. The organic layers were collected, dried over MgSO4, filtered, and concentrated giving a brownish oil. The residue was purified by preparative thin layer chromatography using 50% EtOAc in hexanes as eluant to provide 2 mg (17%) of 1-{2-methyl-2-[2-(3,4,5-trimethoxy-phenyl)-5H-pyrrolo[2,3-b]pyrazine-7-carbonyl]-pyrrolidin-1-yl}-ethanone as a light yellow solid. M+H=439.

Provenance & Evidence