Dimethylformamide → 1-{2-[4-(4-Chloro-2-fluoro-5-methoxy-phenyl)-2-(S)-methyl-piperazin-1-yl]-2-oxo-ethyl}-1H-pyrazolo[3,4-b]pyridine-3-carbonitrile

Participants

Reaction Conditions

Reaction Steps

A mixture of 1-[(S)-4-(4-Chloro-2-fluoro-5-methoxy-phenyl)-2-methyl-piperazin-1-yl]-2-(3-iodo-pyrazolo[3,4-b]pyridin-1-yl)-ethanone (2.2 g, 4.0 mmol, 1 eq), CuCN (3.6 g, 40 mmol, 10 eq), and DMF (25 ml) was stirred at 175° C. for 1 hrs. The reaction mixture was cooled to rt, diluted with ethyl acetate and filtered. The filtrate was washed with water, dried over Na2SO4, and purified by flash chromatography to provide 1-{2-[4-(4-Chloro-2-fluoro-5-methoxy-phenyl)-2-(S)-methyl-piperazin-1-yl]-2-oxo-ethyl}-1H-pyrazolo[3,4-b]pyridine-3-carbonitrile (1.6 g).

Provenance & Evidence