Ethanol → 1-(1-Methylethyl)-6-[4-(methylsulfonyl)phenyl]-1H-pyrazolo[3,4-b]pyridine-4-carboxylic acid

Participants

Reaction Steps

The title compound was prepared in the same manner as described for intermediate 58 using ethyl 1-(1-methylethyl)-6-[4-(methylsulfonyl)phenyl]-1H-pyrazolo[3,4-b]pyridine-4-carboxylate (260 mg, 0.671 mmol), Ethanol (4 mL), THF (1 mL) and sodium hydroxide (2N, 1.118 mL, 3.36 mmol). The final product was collected as 231 mg (96%). LCMS E-S (M+H)=360.1. 1H NMR (400 MHz, DMSO-d6) δ ppm 1.58 (d, J=6.8 Hz, 6 H), 3.30 (s, 3 H), 5.34-5.49 (m, 1 H), 8.11 (d, J=8.6 Hz, 2 H), 8.30 (s, 1 H), 8.44 (s, 1 H), 8.51 (d, J=8.6 Hz, 2 H).

Provenance & Evidence