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0 °C

Methyl 2-(tert-butoxy)-2-(6-methyl-4-(p-tolyl)-1H-pyrrolo[2,3-b]pyridin-5-yl)acetate (15 mg, 0.036 mmol) was dissolved in DMF (2 mL) and cooled to 0° C. Sodium hydride (0.175 mmol, 7 mg, 60% dispersion in oil) was added followed by dropwise addition of 4-(bromomethyl)-1-fluoro-2-methylbenzene. The reaction was stirred at ambient temperature 15 minutes, diluted with water and extracted with ethyl acetate, dried over sodium sulfate and purified by silica-gel chromatography (0-50% ethyl acetate/hexanes gradient elution) to give the title compound as a colorless oil 17 mg, 85%). 1H NMR (400 MHz, CHLOROFORM-d) δ ppm=7.52-7.46 (m, 1 H), 7.42-7.35 (m, 1 H), 7.34-7.26 (m, 2 H), 7.16 (d, J=7.2 Hz, 1 H), 7.11 (td, J=2.3, 5.3 Hz, 1 H), 7.02-6.92 (m, 2 H), 6.15 (d, J=3.5 Hz, 1 H), 5.44-5.39 (m, 2 H), 3.77 (s, 3 H), 2.74 (s, 3 H), 2.47 (s, 3 H), 2.26 (d, J=1.4 Hz, 3 H), 1.67 (s, 1 H), 0.93 (s, 9 H); LCMS (m/z) ES+=489 (M+1).

1. extractionextracted with ethyl acetate
2. dry with materialdried over sodium sulfate
3. custompurified by silica-gel chromatography (0-50% ethyl acetate/hexanes gradient elution)