Chlorosuccinimide → N-[1-Cyano-2-(3,6-dichloro-2H-pyrazolo[4,3-b]pyridin-2-yl)-1-methylethyl]-4-trifluoromethoxybenzamide

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Reaction Conditions

Reaction Steps

A mixture of N-[2-(6-Chloro-2H-pyrazolo[4,3-b]pyridin-2-yl)-1-cyano-1-methylethyl]-4-trifluoromethoxybenzamide (134 mg described in Example 155), and N-chlorosuccinimide (51 mg) in acetonitrile (3.5 mL) was heated to 60° C. overnight. The mixture was concentrated under reduced pressure to yield a residue that was purified by chromatography (SiO2, heptane/EA) to afford the title compound as white solid (129 mg, 89%). MS (ES): M/Z [M+H]=458. 1H NMR: (400 MHz, DMSO-d6): 1.78 (s, 3H), 5.10-5.20 (m, 2H), 7.53 (d, J=8.3 Hz, 2H), 7.97 (d, J=8.8 Hz, 2H), 8.43 (d, J=2.0 Hz, 1H), 8.59 (d, J=2.0 Hz, 1H) and 8.99 (s, 1H). 19F NMR (376 MHz, DMSO-d6): −57.1 (s, 3F).

Provenance & Evidence