Dimethylformamide → 1-(3-(benzyloxy)cyclobutyl)-4-iodo-1H-pyrazole

Participants

Reaction Conditions

Reaction Steps

A 250-mL round-bottom flask was charged with 4-iodo-1H-pyrazole (1.97 g, 10.2 mmol), N,N-dimethylformamide (20 mL), 3-(benzyloxy)cyclobutyl methanesulfonate (2.60 g, 10.2 mmol) and cesium carbonate (9.75 g, 29.9 mmol), and the resulting mixture stirred overnight at 80° C. The reaction mixture was cooled to room temperature, poured into water (50 mL), and extracted with ethyl acetate (3×50 mL). The combined organic layers were washed with brine (50 mL), dried over anhydrous sodium sulfate, filtered, and concentrated to afford 1-(3-(benzyloxy)cyclobutyl)-4-iodo-1H-pyrazole (3.00 g, 83%) as yellow oil. MS (ESI, pos. ion) m/z 355 [M+H]+.

Provenance & Evidence