Benzene → Ethyl 1-(1,1-dimethylethyl)-3-methyl-6-[4-(methyloxy)phenyl]-1H-pyrazolo[3,4-b]pyridine-4-carboxylate

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The title compound was prepared in the same manner as described for intermediate 61 using ethyl 4-[4-(methyloxy)phenyl]-2,4-dioxobutanoate (327 mg, 1.305 mmol), benzene (8 mL), 1-(1,1-dimethylethyl)-3-methyl-1H-pyrazol-5-amine (200 mg, 1.305 mmol), and acetic acid (2 mL). The crude product was purified using column chromatography (Silica gel, eluent: 0 to 100% EtOAc/hexanes) to give 0.41 g (85%) of product. LCMS E-S (M+H)=368.1. 1H NMR (400 MHz, DMSO-d6) δ ppm 1.81 (s, 9 H), 2.55 (s, 3 H), 7.11 (d, J=8.84 Hz, 2 H), 7.89 (s, 1 H), 8.16 (d, J=8.84 Hz, 2 H).

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