Trimethylsilyl isocyanate → 4-{3-[1-(2,6-Dichloro-3-fluorophenyl)ethyl]-1H-pyrrolo[2,3-b]pyridin-5-yl}-3,6-dihydro-2H-pyridine-1-carboxamide

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Reaction Steps

A mixture of 3-[1-(2,6-dichloro-3-fluorophenyl)-ethyl]-5-(1,2,3,6-tetrahydropyridin-4-yl)-1H-pyrrolo[2,3-b]pyridine (12.0 mg, 0.0307 mmol), trimethylsilyl isocyanate (8.32 μL, 0.0615 mmol), DIPEA (26.8 μL, 0.154 mmol) and DMF (0.5 mL) was stirred at rt for 20 min. The solution was concentrated in vacuo, redissolved in MeOH (0.5 mL) and purified via HPLC. The fractions containing the pure product were concentrated in vacuo to afford the title compound as a white solid. 1H NMR (400 MHz, CD3OD): δ=1.87 (d, J=7.1 Hz, 3 H), 2.28-2.51 (m, 2 H), 3.60 (t, J=5.8 Hz, 2 H), 4.02 (q, J=2.5 Hz, 2 H), 5.26 (q, J=7.1 Hz, 1 H), 5.88-5.94 (m, 1 H), 7.18 (t, J=8.6 Hz, 1 H), 7.29 (d, J=2.0 Hz, 1 H), 7.32-7.55 (m, 2 H), 8.23 (br. s., 1 H). MS (ES+): m/z 433.02 (100) [MH+]. HPLC: tR=3.15 min (ZQ3, polar—5 min).

Provenance & Evidence