Water → 1'-[6-(3-methyl-1,2,4-oxadiazol-5-yl)pyridazin-3-yl]-3H-spiro[1-benzofuran-2,3'-pyrrolidine]

Participants

Reaction Steps

A mixture of 3-chloro-6-(3-methyl-1,2,4-oxadiazol-5-yl)pyridazine (39 mg) obtained in Example 43(2), 3H-spiro[1-benzofuran-2,3′-pyrrolidine] hydrochloride (42 mg) and potassium carbonate (55 mg) was stirred in DMF (5 mL) at 120° C. overnight. After cooling to room temperature, water was added, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine, and dried over magnesium sulfate. The desiccant was filtered off, and the filtrate was concentrated. The residue was washed with a small amount of acetic acid to give the object product (35 mg, 52%).

Provenance & Evidence