Sodium hydride → 7-Iodo-2-(4-methoxybenzyl)-2H-pyrazolo[4,3-b]pyridine

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Reaction Steps

7-Iodo-2H-pyrazolo[4,3-b]pyridine (1 g, 4.08 mmol) and sodium hydride (0.196 g, 8.16 mmol) were combined in DMF (15 mL) at room temperature. The mixture was stirred at room temperature for 10 minutes and 1-(chloromethyl)-4-methoxybenzene (0.554 ml, 4.08 mmol) was added. The mixture was stirred at room temperature for 1 hour the quenched with ice water and purified by preparative HPLC using a Phenomenex Gemini Prep 5 μm C18, 75×30 mm column eluting with a gradient of 20-90% 10 mmol NH4HCO3 in 20/80 (v/v) water/acetonitrile in 10 mmol NH4HCO3 in water to give the 7-iodo-2-(4-methoxybenzyl)-2H-pyrazolo[4,3-b]pyridine (300 mg, 20.1% yield) as a white powder. MS [M+H] found 366.1.

Provenance & Evidence