Water → 2-(Imidazo[1,2-a]pyrazin-3-yl)-4-iodofuro[2,3-c]pyridin-7-amine

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Reaction Steps

2-(Imidazo[1,2-a]pyrazin-3-yl)furo[2,3-c]pyridin-7-amine (0.018 g, 0.072 mmol) was dissolved in DMF (1 mL). NIS (0.024 g, 0.11 mmol) was added and the mixture was brought to 40° C. After 4 h, the reaction was cooled to room temperature. Water was added and the resulting solid was filtered off. The solid was dissolved in 2:1 methanol:DCM (−30 mL). To this solution was added aqueous sodium thiosulfate (0.5 mL) and the mixture was then concentrated. Purification by ISCO chromatography (0 to 20% methanol:DCM) afforded 0.018 g (67%) of the title compound as an off-white solid. 1H NMR (400 MHz, CD3OD): δ 9.21 (dd, J=1.4, 4.7 Hz, 1 H), 9.17 (d, J=1.5 Hz, 1 H), 8.50 (s, 1 H), 8.14 (d, J=4.8 Hz, 1 H), 7.97 (s, 1 H), 7.27 (s, 1 H); MS (ESI): 378.14 [M+H]+.

Provenance & Evidence