Potassium Carbonate → 3-Ethyl-4-[(5-nitro-2-pyridinyl)oxy]-1,2-benzisoxazole

Participants

Reaction Conditions

Reaction Steps

A mixture of 3-ethyl-1,2-benzisoxazol-4-ol and 2-ethyl-1,3-benzoxazol-4-ol (Intermediate 31, 38 mg), was dissolved in DMF (3.0 mL) and 2-chloro-5-nitropyridine (36.9 mg, 0.23 mmol) was added, followed by potassium carbonate (97 mg, 0.70 mmol). The reaction mixture was heated under microwave irradiation at 110° C. for 1 hour. After removal of the volatiles, the crude was charged on a silica gel column and eluted with Cyclohexane/EtOAc (from 1/0 to 1/1) to afford the title compound (9.5 mg).

Provenance & Evidence